Features of HBO connection. Installing an LPG with your own hands How to install a 4th generation LPG on an injector

High gasoline prices force motorists to look for alternative options that allow them to save at least a little on fuel and protect their budget. In this case, most often the only solution is to install gas equipment on your car. Today, many service stations offer a similar service, but if you have some knowledge, installation can be done without outside help. As for the type, it is better to install 4th generation gas equipment.

Advantages

When compared with previous versions of the fourth generation HBO, it has a number of advantages:

The system's gearbox quickly responds to vacuum and maintains a normal pressure level (regardless of the operating mode of the power unit). This is possible thanks to the installation of a wide 2nd stage aperture and well-designed feedback;

There is always a stable pressure at the outlet of the system, which allows you to use gas economically. In addition, the motor operates stably, high-quality acceleration is ensured, and there are no “pops”;

Gas does not enter the cooling system in any way, due to the lack of connection between the diaphragms and the coolant cavity;

The gearbox warms up very quickly. This is possible thanks to high level heat transfer from the ribbed surface;

Valves and gearboxes are made of reliable materials, not plastic (as was the case in previous generations). Consequently, even when operating in unfavorable conditions, the system clearly performs its functions;

The gearbox life is about 7-8 years, which is ensured by the use of high-quality rubber and casting;

Installation of 4th generation gas equipment is significantly simplified thanks to the use of special cone couplings. To do the job, it is enough to have the most common tool. In addition, this feature simplifies further maintenance and repairs;

The fourth-generation LPG gearbox is distinguished by the presence of 4-dimensional adjustment, two of which are clearly set at the factory (there is no need to adjust them). All that is required is to adjust the idle speed;

The gearbox is mounted at three points, which simplifies the search for a place to install the unit and guarantees a high-quality connection to the body.

Installation of 4th generation gas equipment: step by step

Let's take a quick look at what steps you will need to go through when self-installation systems. This will allow you to develop your strategy and complete installation and adjustment work as quickly as possible.

So let's get started:

1. Purchase the equipment necessary for installation:

HBO kit (choose it based on your car brand). It consists of wiring harnesses, “brains”, a valve, many hoses, nozzles, gas temperature and pressure sensors, a button and, in fact, the gearbox itself. The equipment may, of course, vary;

Balloon. There are many execution options here. But if your goal is compactness, then it is better to give preference to a torus-shaped balloon. For example, you can choose a Turkish Atiker cylinder with a capacity of 54 liters. Its size is 630 by 225 mm;

Multivalve, which includes the device itself and a remote system for refueling;

Gas level sensor - connects to the “brains” of your gas equipment. Its task is to show the remaining fuel in the cylinder;

Universal programmer (without its help, setting up the “brains” is impossible);

A disk with instructions, diagrams, firmware, and so on. In principle, after studying this material, a lot will become clear to you;

Injector harness.

Most often, this equipment is sufficient. Costs may vary. Here a lot depends on the kit and the cost of the cylinder itself. On average, total expenses are about 20 thousand rubles.

Although, you will still have to buy something else - a copper hose with a diameter of 8 and 6 mm and a length of 1.5 meters and 8 meters, respectively, a pressure sensor and a connector for this sensor. Additionally, this is about 1,500-2,000 rubles.

1. Install the cylinder. It is very important here that the hole with the multivalve is located on the side (towards the fuel filler hole).
2. Install the multivalve. It is attached directly to the cylinder with bolts (by the way, the latter must be tightened in a strictly defined order).
3. Install a level sensor, which is necessary for normal operation of the indicator on the fuel switch button. This unit is installed directly on the multivalve (installation details depend on the features of the kit).
4. Install a solenoid shut-off valve. Its task is to open when a corresponding signal is given from the “brains” of the HBO and remain closed when the corresponding command is not received.
5. Install lines and filling device. Please note that there are often two highways. One is the main one, and the second is the filling station. Use pre-purchased tubes for these purposes. Copper tubes can be connected using a special copper bolt and barrels. As for the VZU, it is advisable to place it near the main filler neck. But here it’s up to you to decide where it will be more convenient.

After installing the lines, it is mandatory to check them for leaks. For this you will need a compressor. Pass 5-6 atmospheres through the system and check for the presence (absence) of etching from the tubes.

1. Install the gearbox. Its place is in the engine compartment. Most often the unit is located near the radiator. It is very important that the outlet is at the top and directed in the direction of travel. In addition, the gearbox must be below the coolant level. Otherwise, it will be very difficult to crash into the cooling system.
2. Mount the injectors and cut them into the manifold.
3. Assemble the low pressure line - connect the nozzles and the reducer using a hose.
4. Fill the tank and perform pressure testing.
5. Install the “brains” and manufacturers of wiring connections (this work can be done before crimping).
6. Adjust the operation of the system and check the operation of the engine in various modes.

Conclusion

Of course, installing 4th generation gas equipment is a very complex and time-consuming process. It is very important here to carefully read the installation instructions and strictly follow all recommendations. As a rule, it may take a beginner several days to install and configure the system. But this is the case when haste is unnecessary. If you have doubts about your abilities, it is better to turn to specialists. Good luck.

For management fuel system car with gas equipment, a gas/petrol switch is installed in its interior. Models of HBO buttons vary depending on the type of engine of the machine.

Fuel switches for gas installations can be divided into 4 types:

1. A key intended only for carburetor engines. Included in the 1-2 generation HBO set, has an index - G;
2. toggle switch for injection machine with the 2nd and 3rd generation of gas-cylinder equipment, marked with the index - W;
3. universal 2nd generation HBO switch for injector and carburetor;
4. switch button gas petrol 4th generation.

Operating principle and differences between buttons

The 1-2 generation button on the carburetor has two working positions and one neutral.

1st generation HBO button for carburetor

• I – the engine starts and runs only on gasoline (gas valve is closed, the red light is on).
• II – The internal combustion engine switches to gas, while the gasoline electric valve closes and the green lamp lights up.
• 0 (Neutral) – serves to burn gasoline from the carburetor float chamber.

Changing the fuel type should only occur through the neutral position. If you turn on the gas right away, two types of fuel will enter the combustion chambers and the engine will most likely stall.

Some copies also have an additional button in the cylinder for pre-start supply of a portion of gas, which is needed to enrich the mixture when starting a warm engine on gas (for example, Lovato, Logo buttons for a vacuum reducer).

A key such as, for example, Stag 2-G already has a pre-start function built into it, with the ability to adjust by time.

In the injection version, instead of the middle position there is automatic mode(on some species, such as Stag 2-W, it can be extreme). In this position, the engine starts on gasoline, and when a certain engine speed is reached, the gas supply is automatically turned on.

Button for switching gas petrol 2nd generation to injector

The transition speed is regulated using a potentiometer on the side surface of the housing. This key can also come with a level indication.

The universal option involves installing a toggle switch on both the injector and the carburetor. The transition between modes is carried out using a jumper/jumper on the case (example SVG switch).

Universal switch

The 4th generation HBO button has an LED indication and 2 operating modes on/off. In the on position, the gas turns on automatically after the reducer-evaporator warms up to 35-45˚C. The temperature is programmed in the controller at .

Button signals using Stag as an example:

1. LED is on/off – the engine is running on gas/gasoline;
2. blinks at intervals of 1 second. – the engine is not warmed up;
3. flashes every 2 seconds – the system is ready to switch to gas;
4. blinks every 4 seconds – the tank has run out of fuel;
5. the buzzer beeps three times - the system switches from gas to gasoline due to lack of fuel;
6. three short signals 1 long – ECU (control unit) error;
7. two short beeps 1 long beep (with the ignition off) – maintenance of gas equipment is required.

In addition, in the fourth version, gas equipment is available for gas. The mode is activated as follows: hold the button with the ignition off until the LED lights up continuously. Then, without releasing the key, we start the engine. Deactivation occurs after stopping the internal combustion engine.

Types of buttons (video):

Selection table (with approximate prices):

Connection diagram of the 2nd generation HBO button to the injector

Installing and connecting the 2nd generation HBO button with your own hands on a car with an injector sometimes causes difficulty.

In fact, everything is much simpler than it seems. The factory instructions for installing the switch indicate the following pinout:

• the white wire should go to the level sensor (if such a indicator is installed);
• yellow goes to the positive of the gasoline valve (if there is emulation of gasoline injectors, this wire is not connected);
• blue connects to the positive terminals of the gas valves and the additional remote with filter. The injector emulator also cuts into this circuit;
• red goes to the positive terminal of the ignition coil (necessarily with a fuse);
• black - mass;
• brown to the negative terminal of the coil.

Injection circuit

It’s hard to disagree with the first three points. But for the rest we will make recommendations:

• The red wire is best connected to the positive side of the ignition switch. Because the coils may have voltage surges. In order not to disassemble the panel, the contact can be found on the fuse block.
• The black wire should only be attached to the car body, like all negative equipment cables.
• Brown, must be wound onto the central high voltage wire of the coil.

It is advisable to do 10-15 turns, without using electrical tape. The electrical tape dries out over time and falls off; it is better to make a knot similar to the tying of a fish hook.

Correct connection of the brown wire

If the ignition system consists of separate coils, it is necessary to wind the wire onto the first two armor wires (for a more accurate signal), without breaking the brown one, i.e. first to the first then to the second.

After connecting the button, it must be adjusted. Periodically increasing the engine speed with the accelerator, it is necessary to smoothly turn the potentiometer screw clockwise and back. It is necessary to ensure that the gas supply is turned on in the “automatic” mode when the tachometer reading is 2000-2500 rpm.

Connection diagram of the 2nd generation HBO button to the carburetor

For a carburetor engine, the connection looks similar:

1. Red - through the fuse to the ignition coil/switch.
2. Light blue (blue) – gas valve positive.
3. Yellow – positive of the gasoline valve.
4. Black – minus (car body).
5. The brown one goes to the ignition coil armored wire. It is needed to transmit an impulse to the key, which determines whether the motor is running or not.

Carburetor diagram

If you still have questions about connecting or selecting buttons on the HBO, ask them in the comments. We will be happy to answer them.

Issue more modern cars forces producers gas systems develop, moving with the times. Although the number of obsolete vehicles is inevitably decreasing, in pursuit of savings on fuel and car maintenance costs, 2nd generation LPG does not lose popularity among car owners. Its installation and adjustment does not require special equipment. Therefore, it is possible to install gas equipment on a car yourself in the conditions of an average garage.

Device on the carburetor

HBO 2 kit for carburetor

The second generation kit includes:

• filling valve;
• with and level sensor;
• filling, consumable lines;
• with a coarse filter (sometimes a remote filter with a solenoid gas supply valve);
• fuel type selection button;
• gas mixture dispenser (power register);
• device for mixing gas with air (mixer);
• solenoid valve, blocking the access of gasoline to the power unit when converting it to gas.

The operating principle of 2nd generation equipment on a carburetor engine is as follows:

The engine starts and warms up using gasoline. Next, the key is moved to the neutral position to produce fuel from the carburetor float chamber. Thus, the solenoid valve is activated, which shuts off the gasoline supply.

After which the switch is set to the gas supply position, activating the gas valve. So the gas, which is in a liquid state in the cylinder, flows through the multivalve to the reducer. At this stage, the mixture undergoes preliminary rough cleaning.

When the gearbox warms up from the engine coolant, the liquefied gas is converted into steam. In the vapor phase, the fuel, passing through the power register, mixes with air in the carburetor.

To do this, in the 2nd generation HBO system, an injection mixer (spacer) or gas inserts are installed on the carburetor.

Then the finished gas mixture, entering through the intake manifold and cylinder head valves, is ignited by a spark in the combustion chamber of the engine cylinder.

To switch back to base fuel, the LPG button is moved to the position of working on gasoline, bypassing the neutral position.

Diagram on engines with injector

Second generation gas equipment kit for injection internal combustion engines

Here the equipment differs in several components:

1. the button is specifically for the injection system, but there are also universal ones;
2. A mixer with a counter mechanism is installed in front of the throttle valve;
3. petrol injector emulator;
4. lambda probe emulator (installation is not required on all machines).

There are no radical differences in the operating principles of both gas equipment schemes. Major changes have been made to the design of the gas equipment due to the presence in a car with an injector of injectors for supplying fuel (or a mono injector - one nozzle for all cylinders). Which are controlled by the standard engine control unit (ECU).

The engine can switch to gas in semi-automatic mode (middle position of the toggle switch). Until the engine reaches a given number of rpm (1500-2000), gasoline is supplied to the combustion chamber. Then the switch to gas occurs automatically.

An injector emulator is needed to turn off gasoline injectors; it also sends a signal to the controller (ECU) simulating their operation. Due to this, the control unit does not display an error (“check engine”) about non-working injectors through an alarm on the instrument panel.

The lambda probe emulator (oxygen sensor) blocks the engine control unit from outputting a false error about a lean fuel mixture. Sensor advantages:

• facilitates setting up HBO due to the display of an indication of the quality of the mixture (poor green, rich red);
• reduces gas consumption by an average of 7-10%;
• allows you to detect real errors in engine operation.

Because of possible malfunctions in the ignition system (missing sparks) or gas distribution mechanism, popping noises occur in the engine. The reason for this is the ignition of fuel in the intake manifold, which can lead to its rupture.

If the engine has a plastic manifold, it is recommended to install the 4th generation of equipment. Or replacing the intake with a metal one.

The second generation gas equipment is equipped with an “anti-pop” valve, which is installed in the gas mixer or may be additional in the air filter housing.

Installation of HBO 2nd generation

1. After selecting the components, the connection diagram for the 2nd generation LPG to the injector and carburetor will consist of several stages: Preparation of the mounting location for the cylinder. Here you need to provide ventilation holes, you will have to drill the bottom for the tubes, as well as securely fasten the cylinder. In this case, you should stock up on a drill and a drill bit of the required size. Next comes the installation of the cylinder, then the multivalve.

   

   Installation options for HBO cylinders

2. Installation of the VZU in a pre-selected location (gas tank flap, bumper, on a bracket). Connecting a filling line with a diameter of 8 mm to the multivalve.

   

   Methods for installing VZU

3. Installation of a 6 mm supply line from the cylinder to the engine compartment (it is recommended to use plastic). It is important to route the pipe away from the exhaust system and moving parts of the vehicle's suspension. It is advisable to mount it near the gasoline line. For fastening it is convenient to use plastic clamps and metal brackets.
4. An evaporator reducer is installed in the engine compartment (a vacuum one is better suited for a carburetor). Here you should choose a place taking into account the possibility of its maintenance (adjustment, ). You also need to pay attention to the correct installation diagram, which is included in the kit. When starting to move and stop, inertial forces affect the gearbox diaphragm, so it is mounted with its end facing the direction of travel of the vehicle.

   

   Correct location of the HBO gearbox 2

5. A flow line is supplied to the gearbox. If there is no solenoid valve on the gearbox, a remote gas valve with a coarse filter is installed between the cylinder and the evaporator, which is mounted in the engine compartment. For convenience, it is placed in an accessible place, closer to the gearbox.

   

   Remote gas valve with coarse filter

6. In the carburetor version, a gas shut-off valve is also installed after the gas pump in the cut in the hose.

   

   Gasoline solenoid valve

7. If the car has a carburetor, fittings are made or a mixer is installed to supply gas from the gearbox to the carburetor. In the case of an injector, a mixer with an anti-pop device is mounted in front of the throttle valve. Then it is supplied with an embedded power register. The closer the register is installed to the mixer, the more responsive the adjustment will be.

   

   Double screw "greed"

8. Hoses from the cooling system are also supplied to the gearbox throttle valve(option with injector). In the carburetor circuit, the antifreeze hoses are inserted into the interior heating system (the tees must be inserted parallel to the stove). Ideally, it is powered directly from the engine's water jacket (cylinder head), but this will require some effort.

   

   Connection diagram of the LPG reducer to the heating system

9. In the cabin (injector/carburetor).
10. In the injection version, an injector emulator and an oxygen sensor emulator are installed. The wiring diagram (pinout) is carried out in accordance with the instructions supplied with the equipment. The main thing is to observe safety precautions when laying wires (use corrugated insulating tubes, reliable terminals with connectors, use soldering instead of twists, do not lay them in places of possible heating).

    

    Wiring diagram for connecting the lambda probe emulator and injectors

11. After completing the installation work, you need to start the engine and check the functionality of the gas equipment (without fuel). The car should stall when switching to gas. Next, you need to fill the cylinder with 5-10 liters of gas. Using a soapy solution, check for leaks in all connections and repair them as soon as they are identified.

Equipment setup

Reducer-evaporator diagram

As an example, consider the configuration option for a popular gearbox from Tomasetto (Tomasetto AT-07 electronic). Adjustment of 2nd generation Lovato gearboxes and its full analogues, such as Atiker and Torelli, is performed in a similar manner.

Before starting work, make sure that all engine systems are in good condition. Air filter changed, ignition adjusted, coolant level normal. Drain the condensate from the gearbox, if it is not new, make sure it is in good condition.

In order to adjust second-generation gas equipment with your own hands, you need to warm up the engine to operating temperature on gasoline, switch to gas and turn off the engine. From now on, we will separate the configuration options for different types engines.

Correct adjustment of 2nd generation HBO on a carburetor with your own hands

1. Using a flat-head screwdriver, tighten the screws of the gearbox and dispenser until they stop (without much effort), and then unscrew:
   • membrane sensitivity 2-3 turns;
   • “greed screw” of the first chamber until fully open, the second by 1 turn.
2. Start the engine on gas. Gradually tighten the sensitivity screw to find the moment the speed drops at a lean mixture. Attention! A drop may occur when the mixture is enriched. Therefore, if, when unscrewing the screw, the speed increases, and then falls again, it means that this is work on rich mixture. Now, by screwing the screw back in clockwise, you need to set the peak of increased engine speed - this way the idle speed will be found (800-850 rpm). If higher, adjust the quantity screw on the carburetor itself to the desired readings.
3. Use the accelerator to increase engine performance around 3000 rpm. Use the “greed screw” of the first chamber to set the moment when, when it is tightened, the drop begins, and when unscrewed, the speed increases. Release the accelerator and revoke the throttle; if the internal combustion engine develops low speed (there is a dip), unscrew the screw of the first chamber of the power register by 1/8. In this case, adjust the sensitivity screw as indicated in point No. 2. Check by re-gasping again.
4. The second chamber of the carburetor operates at increased speed ICE from 3000 rpm (depending on the engine brand). Therefore, the “greed screw” of the second camera must be set to approximately the same position as the first.
5. Next, you need to carry out control tests on the move under different loads (lifts, sudden accelerations).

Setting up 2nd generation HBO on an injector

• Unscrew the screw of the power register and membrane by 2-3 turns, tighten it until it stops.
• Start the engine. Raise the engine speed to 3000-3500 rpm, by tightening and unscrewing the dispenser, find the peak of maximum engine speed. From this position, screw in the register screw 0.5 turns.
• Release the accelerator and revise the throttle. If the engine starts to choke, unscrew the metering bolt 1/8. And so on until finding the optimal speed set.
• Then, gradually tightening the membrane sensitivity screw, find the moment the speed drops, loosen the screw by 1/8.

In this case, it is convenient to use a lambda probe emulator. The setting can be considered correct when the indication on it (LED) glows red on idling. If this condition is not met, you can unscrew the x/x screw until the engine speed stabilizes. Also, if you have a device (gas analyzer), you can use it to adjust the gas equipment even more accurately.

Today we will talk about self-installation 4th generation gas equipment, after all, the use of gas as fuel in cars has long proven its economic efficiency.

In this case, significant intervention in the design of the car is not required, and the gas itself does not negatively affect the service life of the engine.

In addition, after installing the equipment, it is always possible to switch between two types of fuel with just a switch of keys.

Benefits of using HBO

First, let's look at the benefits of installing HBO. fourth generation, and there are several of them, but they are important:

• Cost of gas (significantly less than gasoline);
• Consumption (in new generations of gas equipment, gas consumption is slightly higher than gasoline consumption);
• The gas contains no unnecessary impurities (which can be found in gasoline);
• Less deposition of combustion products inside the combustion chambers (affects the resource power plant);
• When the car is fully refueled (with both gasoline and gas), the range will significantly increase.

With such a significant number of positive qualities, there is also a negative.

Disadvantages of using HBO

The first and noticeable disadvantage of the 4th generation HBO is the cost of the equipment; the higher the generation, the more expensive it is.

But even in this negative there is a positive quality of the equipment - it is universal, so by purchasing it, you can remove and install the equipment on different cars.

The second negative is the cost of installation, if you are sure that it will not be possible to install it yourself, as well as the quality of installation of the equipment.

Since the equipment is not cheap, if the car is used rarely and for short trips, then installing an LPG will not pay off soon.

Features of HBO of different generations

So, it was decided to install HBO on the car. First you need to figure out which generation of equipment is best to use. It all depends on the car itself.

If a car uses a carburetor power system, then there is no particular choice - only 1st and 2nd generation gas equipment is installed on such cars.

Of course, there are craftsmen who install more modern equipment on such cars, but this is labor-intensive and expensive.

On injection cars you can install 2, 3 and 4 generations of gas equipment. Let's go through them.

HBO 2nd generation.

It is simpler in design, has mechanical control and adjustment.

This makes it possible to use it on many cars with both old and new injection power systems.

But this equipment has such a drawback as the lack of clarity in the dosage of gas supply, which often leads to its overconsumption.

Already has a mechanism for precise dosing of gas supply. But the execution of the serve leaves much to be desired.

Equipment that is used as an alternative to the gasoline power system is significantly delayed in determining the amount of gas required at a certain moment in the operation of the power plant.

This drawback ensured a “short life” for equipment of this generation; it is now rare, and the feasibility of its use is a big question.

The most advanced equipment at the moment for use on modern injection cars.

And although gas equipment of the fifth and sixth generations already exists, at this time gas equipment of the fourth generation is the most popular and widespread.

Connected to the standard power system and using signals from the standard car power system control unit, the equipment performs a very precise dosage of the amount of gas required at a certain moment for optimal operation of the power plant.

Nuances of purchasing 4th generation HBO

Let's stop at gas installation 4 generations, and we will consider the sequence of installing it on a modern injection engine.

The basis will be an ordinary modern injection car with 4 cylinders and average power, since installing this equipment on a car with a large number of cylinders, or with increased power indicators has its own characteristics.

This choice is due to the massive use of cars with exactly these indicators, regardless of the brand.

We decide on the choice.

First you need to decide on the purchase of this equipment. All pieces of equipment can be purchased as a set, or individually. This has its own positive qualities, as well as disadvantages.

Purchasing equipment as a set from a branded manufacturer will ensure high reliability of all elements, since they undergo quality certification.

And the installation of equipment will be easier, since the connecting elements and debugging of the equipment have already been completed. But purchasing the kit will cost much more.

By purchasing pieces of equipment separately, you can save a lot.

Many elements are common to all types of gas equipment, and their cost individually will be lower than in the kit.

But some pieces of equipment are used only in installations of this generation. This includes a gas reducer, used only on the 4th generation of gas equipment, a gas train with electromagnetic injectors, an electronic control unit, and the sensors required for the operation of this equipment - gas temperature and pressure.

You need to purchase this equipment with a serious approach; it is better to overpay a little for high-quality equipment than to be disappointed in the future by the unreliability of its operation.

Having all the elements in hand, either as a kit or as an assembly, you can begin installation.

Of course, you can leave all this work to specialists, but you will have to pay. Or you can do everything yourself, which is cheaper and will give you the opportunity to fully understand how the equipment works.

Installation of cylinder, filling device, lines

Let's start with something simple - installing elements common to all gas equipment. Let's start with the balloon. Its installation location depends on design features auto.

If the car has a sedan body and there is a trunk of significant volume, then it is more advisable to use a cylindrical cylinder. Its capacity is greater; it is usually attached to the rear wall of the trunk.

If the car is a hatchback, it does not have much luggage compartment, so it is more advisable to install a toroidal cylinder in the place reserved for the spare wheel, if, of course, there is one.

The cylinder must be securely fastened. For this purpose, tapes with fasteners at the ends are used. It is desirable that these tapes have a rubberized surface.

To properly fasten the cylinder, you need to take measurements of where you will need to make holes in the body.

You will also need to mark the places where the high pressure line will exit from the cylinder. After which you will need to make holes in the body in the marked places.

After this, the holes will need to be treated with anti-corrosion treatment.

To further prevent damage to the line from the sharp edge of the hole, you can insert pieces of plastic pipe into it, through which you can then pass the line.

Although the toroidal cylinder fits into the seat of the spare wheel, it also needs to be secured to prevent it from moving.

Fastening is also done with tapes with preliminary preparation of the exit site for the highways.

In both cases of installing the cylinder, they should be installed so that the multivalve installed on it is located in the upper part of the cylinder, and there is easy access to the gas shut-off valve.

The device can be installed on the rear fender, in the body of the bumper, or under the bumper.

The main thing is to ensure that the line from the device to the cylinder is laid where it will not interfere and there will be no possibility of damaging it.

Let's move on to the highways.

The line consists of brass tubes that must run under the car and go into the engine compartment.

To prevent damage to the lines, it is better to attach them to gasoline pipelines, because they are installed where there is no possibility of their breakdown.

Features of gearbox installation

After running the lines into the engine compartment, they need to be routed along the left side to the gearbox installation site.

The gearbox must be properly secured to the car so that there are no problems in the future.

It is attached only to the load-bearing part of the car, that is, to the body or subframe. It is prohibited to install it on the engine. It is important that there is good access to it.

The gearbox is then connected to the cooling system of the power plant. To do this, it is inserted into the cooling system pipes through tees.

It is important that its insertion is parallel, that is, the coolant entering the gearbox should be from one pipe, and its outlet should be into another, and not the same one.

A fitting cuts into it, and it is connected to the gearbox by a pipeline. If there is no fitting, you can wait to insert it for now.

After this, you can connect the high pressure line to the reducer. Only before this, a filter is included in the design to capture mechanical impurities - a “coarse” filter.

Gas train

Leaving the gearbox for now, we move on to intake manifold. It will be necessary to insert gas fittings into it.

Since you will have to drill holes in the collector, in order to prevent chips from getting into the valve mechanism, it is better to insert the fittings on a removed manifold.

You can, of course, make holes on the manifold mounted on the engine, but then you need to drill carefully to minimize the entry of chips.

The holes for the gas supply fittings must be made as close as possible to the gasoline injectors, but the position of these injectors should be taken into account so that they do not interfere with the installation of gas supply pipelines in the future.

Below are several options.

At the same time, a hole is drilled for the vacuum supply fitting to the gearbox.

The holes must be smaller in size than the diameter of the fittings. Then you need to cut threads in the holes.

Before screwing in the fittings, their threads must be lubricated with sealant.

After this, the collector is installed in place and further installation of equipment continues.

The ramp is installed at the top of the collector, but so that it does not interfere with pipelines and wiring.

Pipelines are laid from the ramp to the installed gas supply fittings. It is important to ensure that the length of the pipelines running from the ramp to the fittings must be the same, otherwise there will be a malfunction of the system.

Having installed the ramp, you need to lay a gas supply pipeline from the reducer to it. In this case, another filter cuts into the pipeline - fine cleaning gas.

Again, we return to the gearbox and connect the vacuum supply pipeline to it. All pipelines must be covered with clamps to prevent gas leakage at the connection points.

This completes the technical part of the installation of gas equipment, let's move on to connecting the electronic part.

Installation of the HBO control unit

The operation of the equipment is controlled by an electronic control unit, which is included in the 4th generation HBO kit.

Wiring to the control unit.

First you need to decide on the location of the block. Access to it should be free, but at the same time it is necessary to minimize the length of the wiring so that after connecting it, a heap of tangled wires does not form under the hood.

All wiring coming from the controller is divided into several parts, each of which performs its own functions.

The main thing is to have on hand a diagram with a color definition of which part this or that wire belongs to. Or at least this one.

Before connecting the wiring, you need to disconnect the on-board network from the battery.

First, you need to determine which wires are responsible for powering the unit. There should be three of them - to the positive terminal, to ground, and to the positive terminal of the ignition switch. Having separated them, it is better to immediately connect.

After determining which wires are connected to each specific injector, they are inserted.

The color scheme determines which wire needs to be connected to which one, then the connection is made.

You can use conventional twisting followed by insulation, but such a connection is not reliable; it is still better to solder the wires from the control unit at the connection points and then insulate them.

For the fuel part of the wiring, all that remains is to connect the connectors back to the gasoline injectors, and also connect the connectors of the electromagnetic gas injectors.

The fuel part of the wiring is finished, let's move on to the next one.

Signal wiring.

Let's move on to connecting the next part of the wiring - the signal one.

This wiring is designed to transmit signals from sensors that come with the equipment - gas temperature and pressure.

The accompanying instructions indicate where the sensors should be placed. After installing the sensors, wiring from the control unit is connected to them.

Wiring for the operating mode switching unit.

The last part is the control of the operation of the control unit, that is, the unit for switching the operation of gas equipment.

The control unit is installed in the cabin, in a place accessible for viewing and control.

After which it is wired and connected.

It is advisable to collect all wires into bundles and secure them to prevent the possibility of accidental damage.

The control unit has one more output for connecting a computer, which regulates the operation of the equipment.

This outlet must be freely accessible to facilitate adjustment and diagnostic work.

At this point, the work on installing 4th generation gas equipment on the car is completed.

But what remains is checking the tightness of the system, and then checking and adjusting the operation of the equipment.

Checking the tightness of the system

So, the equipment is installed, you need to check the tightness of the system.

To do this, you need to go to a gas station and “blow out” the full tank. But at the same time, the gas supply valve to the system must be closed.

Then he goes to the viewing hole.

All connections and pipelines of gas equipment up to the gas train must be moistened with a soap solution before opening the supply. If gas passes through, this solution will bubble at the leak site.

The leak test can be done in parts. First, moisten the pipes coming from the cylinder with the solution.

Not only the connections are checked, but also the pipelines themselves, since a leak can occur due to a defect in the pipeline itself or in the event of a breakdown during installation.

After checking the lines going into the engine compartment, you need to check the tightness of the connections of the equipment installed there.

The gas supply to the reducer and the outlet from it to the gas train are checked. There is no need to check further until the equipment is connected to operation.

Connections downstream of the gas train can be checked later.

If the tightness test shows that there is no gas passage, you can proceed to the next step. If a leak is detected, for example, at the junction of pipelines with equipment, then the gas supply is shut off and additional crimping or repacking of the connection is performed. After which a re-check is carried out.

If a leak is found in the pipeline itself, it must be replaced from connection to connection.

Attempting to seal a leak with improvised means practically does not lead to positive results.

After replacing the damaged pipeline, a leak test is carried out again. It is important to ensure that there are no gas leaks anywhere.

Diagnostics and adjustment

After installing the equipment and checking it for leaks, you can begin diagnostic and adjustment work.

You can entrust this work to specialists, or you can do it yourself, but this will require additional equipment in the form of an adapter cord for connecting a laptop, as well as software for performing testing and adjustment work.

Both the cord and the diagnostic program can be purchased. Typically, equipment manufacturers sell them.

After installing the software on the laptop, it is connected to the control unit.

In order for their connection to occur, the control unit must be powered, that is, the ignition switch must be turned on, but the engine must not be started.

If the connection does not occur, the laptop may have software outdated version, but you also need to check the tightness of the contacts.

If the connection is successful and the program is launched, all the basic information on the engine will be displayed on the laptop monitor - the number of cylinders, types of installed injectors, their polarity, engine speed, current temperature, pressure in the system.

In this case, the system control unit installed in the cabin should light up with warning lights.

One is green, indicating the use of gasoline as fuel, and will glow constantly, the second, red, will flash, signaling the possibility of connecting gas equipment to operation.

In the future, if the equipment is properly configured, signals will be sent to this unit in accordance with certain operating modes.

Auto-configuration of equipment

IN in this case you need to press the forced operation button on gasoline. After this, the red warning light will go out.

To configure the operation of gas equipment, the power plant must be warmed up on gasoline.

After starting the engine, the correct compatibility of the program with the control unit can be checked again by comparing the indicators on-board computer with indicators on the laptop screen, since information about engine operation is displayed there.

After the engine reaches the optimal operating temperature, you can begin auto-calibrating the operation of gas equipment.

This is done by clicking on the window that says “auto-tuning” on the laptop screen.

The essence of this setting comes down to the following. After turning on auto-calibration, the electronic control unit checks the main engine parameters - operating temperature, pressure, etc., and, if they meet the required parameters for calibration, begins to connect one of the gas injectors to operation.

To do this, he turns off the working injector and connects the gas one; he usually starts doing this from the first cylinder; the connection of the gas injector can be monitored on the laptop monitor.

But when connected, the control unit supplies minimal fuel, which leads to engine vibration, since the control unit has not yet had time to adapt to the operation of the standard control unit.

Next, the control unit begins to receive information from the standard unit and process it, that is, adapt to its operation; as a result, it adjusts the amount of gas, which is equivalent in energy output to the amount of gasoline. With the correct amount selected, the vibration of the power plant will subside.

Moreover, the control unit for calibration uses the non-sequence of the arrangement of the cylinders, but the order of their operation. If, for example, the operating order is 1-3-2-4, then he will calibrate the injector of the third cylinder next.

Since the sequence of actions of the control unit is identical to the first cylinder, when the gas injector of the third cylinder is connected to operation, the vibration of the power plant will appear again, but it will be weaker.

The fact is that after connecting the second gas injector to operation, correct installation, the activation of the remaining injectors will not manifest itself in the form of vibration power unit, since the supply of gas to two injectors and one gasoline during calibration is sufficient for the engine to operate without vibration.

If vibration persists even after calibrating the second injector, this is a signal that the correct gas supply to one of the electromagnetic injectors has been disrupted.

Problems with operation can be caused either by the difference in the length of the pipes from the ramp to the fittings or by a leaky fitting of the fitting.

The program installed on the laptop will indicate on which cylinder the malfunction occurred. If this malfunction occurs, it must be corrected. Next, auto-calibration is performed again.

The nuances of setting up HBO

If everything is in order, the program will report that auto-calibration was completed successfully.

This will mean that the gas equipment control unit has made an initial installation and has adjusted itself to the performance indicators of the standard control unit. But it is not yet ready for full functioning.

It is necessary to move the train over a distance of up to 30 km, and it is advisable that it be done with a large number of changes in movement modes - sharp acceleration, movement “pull” for the engine, quiet movement and acceleration.

All this is needed so that the control unit of the gas equipment, based on the signals received from the standard unit to the gasoline injectors, adapts to its operation to the maximum and is able to ensure correct adjustment of the gas supply in different modes - creates a so-called fuel map. See what she looks like below.

After this, you can switch on the automatic operating mode of the gas installation.

Additionally, using a laptop, you can set certain operating parameters of the gas installation.

For example, you can set at what minimum and maximum speed There is a transition from gasoline to gas and vice versa.

It is important to adjust the transition to gasoline at high speeds. The fact is that the burning rate of gas is somewhat lower than that of gasoline, so at high speeds the use of gas is fraught with the possibility of burning the exhaust valves.

If gas equipment malfunctions or there is no gas, it switches to using gasoline, and a warning light lights up on the control unit in the cabin.

As a result, it turns out that the power plant starts on a gasoline mixture, but after achieving optimal parameters for turning on gas equipment, it switches to operating on gas. Moreover, the transition is made so carefully that it is unnoticeable when moving.

The use of these two systems in the 4th generation of gas equipment is justified, since failure to use gasoline injectors, as well as the lack of gasoline in the tank, will lead to failure of the gasoline pump and injectors.

As a result, the standard power system control unit will go into emergency mode, and the gas control unit will not function without signals from the standard one.

All additional settings indicating the optimal operating parameters of the power plant when using gas can be seen in the form of a graph on a laptop, which is called a “fuel map”.

Another type of such card.

Having on hand a cord for connecting to the gas equipment control unit, as well as software, you can always diagnose the operation of gas equipment, as well as configure it to certain parameters.

The second generation system is mainly installed in cars with carburetor or injection and mono injection engines equipped with a lambda probe.
Improvements Dynamic performance has been improved and fuel consumption is efficient. It differs from the first generation in that it has a gearbox. In it, the vacuum shut-off valve was replaced with an electromagnetic one. The fuel type switch has changed accordingly. Now you can open the gas supply electronically. Gasoline is turned off electronically - the valve is no longer needed. The electronic control unit maintains the optimal composition of the gas-air mixture in all engine operating modes. Scheme The second generation system has the following design:


1. Cylinder
2. Multivalve + Ventilation unit
3. High pressure hoses and pipelines(gas main)
4. Refilling device
5. Gas valve with filter(electromagnetic)
6. Gearbox(gas evaporator)
7. Gas dispenser
8. Mixer(mixer)
9. Gasoline valve(electromagnetic) or Injector operation emulator
(gas-gasoline) The diagram also shows a gasoline valve, however, in most cases on injection engines, its installation is practically impossible.
It is much easier and more correct to turn off gasoline using an injector emulator. Electrical diagram The connection diagram for gas equipment on injection cars differs from each other. This is due to certain types of engines and type of equipment.


The main electrical unit in the circuit is the gas-gasoline switch and it must be installed regardless of the engine type. 1. Cylinder Made of 3-4mm thick steel to ensure safety even in case of accidents. Currently, cylinders are produced in various sizes depending on the engine size. Cylindrical cylinder- the most common form in first-generation gas treatment plants.


Toroidal cylinder— designed for mounting in a spare tire storage area. This shape allows you to conveniently place the cylinder in a car while maintaining useful space, for example in a station wagon.





There is a difference in the cost of cylinders; toroidal options are best for installation. 2. Multivalve and Ventilation unit A multi-valve is installed together with the cylinder. It prohibits filling the cylinder above 80%. Cylinders should not be 100% full. Free space is necessary in the cylinder to ensure safety. Even if the cylinder is heated to +70 C, which is impossible even if the machine is used harshly, the liquid will fill the residual volume.




The cost of a multivalve is within 2000 rubles. There are options for 1500 rubles. The multivalve also performs other functions:

Refill volume limitation. (up to 80%) The multivalve is installed in - Ventilation block. It avoids possible gas accumulation as a result of any unforeseen circumstances.
The removable cover provides easy access to the multivalve.


On average, a ventilation chamber will cost 300 rubles. 3. Hoses and pipelines Made of copper and can withstand pressure of 45 bar, from 6 to 8 mm in diameter. The cylinder is connected to the multivalve and reducer through this particular pipeline.


The pipeline must be secured to the underbody of the vehicle, away from exhaust pipe and car suspensions. There should be elastic pads at the attachment point to dampen vibration.

A pipeline with a diameter of 8 mm is supplied to the filling line. For all other ligaments - 6 mm. The rubber hose is used to install the antifreeze connection from the point of insertion into the line to the gearbox and to install the connection between the gearbox and the injectors.

All prices are indicated per 1 meter. 4. Remote filling device The remote filling device is designed to safely connect the filling hose when filling a gas cylinder.



It is installed in the car’s gas filler flap in cases where this is possible due to the characteristics of the car.

5. Gas valve with filter This valve automatically shuts off the gas supply from the cylinder to the engine. The gas valve is closed when there is no voltage (12v) applied to it. When the electrical circuit is closed, the valve opens and opens the gas supply.

There are arrows on the surface of the valve that indicate the direction of gas flow - that is, from the cylinder to the engine. Average valve cost -


The valve is fixed in a vertical position, usually on the wall of the engine compartment. The valve also contains - Filter(to clean the incoming gas). Filters are great different sizes and shapes, it all depends on the type of valve used.


The cost of the filter also depends on its type and amounts to 100-150 rubles. 6. Gearbox Provides heat exchange for gas evaporation and pressure reduction required for supply to the engine.

Gearboxes are available in various designs:

TURBO for cars with turbocharging.


The cost is not much different and is within 3000 rubles.

7. Gas dispenser After the mixer there is a dispenser that regulates the amount of gas supplied to the engine. The dispenser has a gas inlet, an outlet, an adjusting screw and a hole for a vacuum tube.

The feed can be adjusted using the adjusting screw. A dispenser with two adjusting screws is necessary to supply gas to the chambers in a 2-chamber carburetor.


The thing is simple, costs around 100 rubles. 8. Mixer Supply the engine with the required amount of gas and air. It's happening in various ways through a carburetor diffuser, or by creating a diffuser in the design of the mixer itself. For every type vehicle There is a specific mixer model.

Mixers can also be divided into several groups:
1. Mixers installed in the upper part of the carburetor;
2. Mixers - spacers that are installed in the middle part of the carburetor.
3. Fittings, so-called inserts, inserted into the carburetor using drilling.
4. A fork-shaped system consisting of tubes that are inserted into the carburetor without drilling.
5. Mixers for injection systems of various modifications.

9. Gasoline valve Blocks the supply of gasoline when the car is running on gas. The valve is closed when no electricity is supplied to it and opens when turned on.

It is installed in the engine compartment only on carburetor cars between the fuel pump and the carburetor. There are arrows on the valve body indicating the direction of gasoline flow. The valve must be mounted vertically, away from hazardous engine parts.


The cost of the valve is within 1000 rubles. In most cases, on injection engines, installing a gasoline valve is practically impossible. It is easier and more correct to turn off gasoline using an injector emulator. Injector operation emulator When installing LPG, the gasoline supply is interrupted by turning off the injectors. The standard ECU initiates injector shutdown as a break in the injectors, turns on the fault lamp (Check Engine) and puts the engine into emergency mode (the latter rarely happens). The injector operation emulator is used to prevent the ECU from seeing the injectors breakage.

Let's look at its diagram.

When running on gasoline, the circuit is closed, and when running on gas, the circuit opens and runs through the load resistors, thereby not indicating to the ECU that the wires are broken. The emulator is selected according to the number of engine injectors, usually 2, 4, 6 injector models. The cost of such an emulator is within 1500 rubles. 10. Fuel type switch Gas/gasoline switch is a device designed to switch the operating mode of a vehicle from one type of fuel to another at the moment when a certain number of vehicle engine revolutions is reached.

All switches are divided into three main groups. 1. For injection engines. This type of switch has three positions: petrol, gas and automatic mode.
2. For carburetor engines with installation of an electronic gearbox. In these switches, the "GAS" position is equipped with an automatic shutdown of power from the shut-off valves.
3. For carburetor engines with the installation of a vacuum reducer. And on this gas-gasoline switch there are two toggle switches. One for switching the type of fuel, the second for pumping gas before starting the engine. The cost of switches usually does not exceed 1000 rubles.


All switches are supplied with a wiring diagram and mounting kit. Installation 2nd generation LPG is usually installed on carburetor cars. Very often the price of equipment is a decisive parameter.
If the car is not in the premium segment, then there is no point in installing expensive equipment on it. The cost of all gas equipment with its installation starts from 15,000 rubles. You can also purchase all the equipment as a mini kit for self-installation.
The average price is 6,000 rubles.


Typically this kit consists of: