What can I do to make the diesel engine warm up faster? Do I need to warm up the engine? Is it necessary to warm up a diesel engine in winter? Is it necessary to warm up an injection engine?

Is it necessary to warm up a diesel engine with a turbine - tips and recommendations

In some European countries, there is a fine for prolonged warming up, no matter how cold it is outside, so most foreign manufacturers do not recommend warming up their cars. The main reason for this is environmental pollution.

Below we will try to figure out whether it is necessary to warm up a diesel engine with a turbine, we will indicate all the advantages and disadvantages of warming up, as well as the nuances of the engine’s functioning in different time of the year.

Features of diesel engine warming up

In the opinion of many, it is better not to warm up an engine with a turbine while running, precisely because of the turbine, since it turns on only at the required crankshaft speed, which appears at high speed. It is prohibited to develop high speed on a cold engine. Driving with the turbine turned off can lead to overheating of the engine, which will result in overheating of the cylinder heads and their rapid wear.

A diesel engine needs to operate at Idling at least 5 minutes, this is enough for all components to be properly lubricated (if, of course, the combustion plugs are in working condition). The developers advise warming up the spark plugs twice. When their indicator on the panel turns off, it means that the voltage in them has turned off, although most people think that this happens if the maximum temperature is reached.

Warming up for too long will lead to the appearance of resin deposits on the valve, which can cause the valves to begin to lock in the future.

Many experts argue that there is no point in warming up the engine for a long time if it is filled with high-quality oil and coolant. It was found that when the engine is cold, there is practically no depreciation of the elements if the car is traveling at low speed. The revolutions accordingly also do not exceed two thousand, thanks to which the required temperature can be achieved quickly.

Diesel fuel evaporates much worse when warmed up. After starting the unit in a cooled engine, the fuel begins to settle on the surface of the cylinders and does not burn completely. As soon as the temperature reaches normal, the fuel assembly in the chamber burns evenly and completely.

Remember that the components of the internal combustion engine do not heat up equally; some of them require more time. The heating time also depends on what material the unit parts are made of (usually pistons, cylinders, shafts are made of aluminum alloy, everything else is made of metal).

Good lubrication of the rubbing elements and optimal setting of gaps is carried out exclusively after the internal combustion engine reaches the required temperature.

Warming up the engine in winter and summer

In summer, warming up the engine is strongly recommended. The movement should be started only a minute after the engine has started, since it is during this period of time that all elements are lubricated with oil. To reduce excessive load on the engine, it is better not to make sudden movements and move smoothly before the temperature approaches fifty degrees.

Diesel engine operation winter time requires complete warming up, since the oil in the engine and gearbox begins to thicken at low temperatures. The oil should become liquid and only then can you gain high speed. The duration of warming up depends on the air temperature; the lower it is, the longer you will need to wait.

The movement should begin when the temperature reaches 60 degrees. In this case, it is recommended not to gain speed more than two thousand, and the speed should not exceed twenty km/h until the temperature reaches normal. In addition, it is better not to turn on the cabin heater until the engine warms up to sixty degrees, otherwise the air flow coming from it will be cold.

All the above tips will help the driver save time and avoid further problems with the diesel unit, as well as significantly extend its service life.

Pros and cons of warming up

Most manufacturers, when asked whether or not it is necessary to warm up a diesel engine with a turbine, state that modern units have an injection system that allows you to immediately start moving, since the oil from the surface of the liners is not washed away by the fuel due to the correct implementation of fuel atomization. But still, when it’s cold, diesel fuel becomes viscous and less fluid and therefore requires warming up.

Domestic manufacturers, on the contrary, advise starting movements only when the engine warms up to forty-five degrees.

Speaking about the disadvantages of warming up a diesel engine, first of all, it is worth noting the following phenomena:

Release of harmful substances;
Too much fuel consumption;
Rapid wear of the components of the gas exhaust system;
Spark plugs are subject to high stress.

Advantages of diesel engine warming up:

The oil is distributed optimally, the most important systems of the machine wear out less, due to the fact that all the main parts are thoroughly lubricated. For example, myself power unit can work significantly longer;
The vehicle moves smoothly and without jerking.

It is necessary to select the right diesel fuel for a certain time of year. In addition to winter and summer fuel, there is also Arctic fuel, which is needed only at the lowest temperatures from −40 degrees Celsius. When using summer fuel in winter, diesel fuel will turn into a kind of jelly, which will make it impossible to warm it up; in addition, it will lead to clogging of air and fuel filters.

To optimize the temperature in the combustion chamber during extreme cold, you can try switching the ignition three to five times. Then warming up the engine will be easier and faster.

In winter, it will take five to ten minutes to warm up a diesel engine with a turbine, and about 2 minutes in summer. No longer necessary, as this will lead to overheating of the engine.

In order to warm up, you must first start the engine; for the first two to three minutes it should operate at idle speed and only after that you can move away. It will not be able to reach the desired temperature during this time and will continue to heat up while moving.

Why is oil warming necessary?

The functioning of the engine has a significant influence octane number FA, fuel quality, presence of additional additives. For easier starting, many use pre-starting devices, glow plugs, etc. But how effective is it? diesel injectors will spray fuel, depends only on the temperature of the power unit.

If the car has an automatic transmission, then it is necessary to warm up the engine, since the oil in the box must warm up to the required temperature.

In their design, diesel engines differ from gasoline engines, primarily in that their gaps between the piston and cylinder are not so large. A diesel engine has a high compression ratio, which places significant stress on the cylinders and pistons. The rapid wear of these components reduces the oil, which thickens at low air temperatures and requires heating.

Oil for units with a turbine must be supplied with even better quality to lubricate the turbocharged compressor, since the functioning of the turbine itself depends on it. The oil warms up at idle speed; do not overload the engine until it is fully warmed up.

avtodvigateli.com

Is it necessary to warm up a diesel engine?

Concern for the environment in many countries has led to the fact that warming up a gasoline or diesel car is prohibited by law. Moreover, in the operating manuals, the car manufacturers themselves recommend starting to drive immediately and warming up the engine while driving. It is quite obvious that the service life of the units was simply relegated to the background, since in developed countries the renewal model range occurs approximately every 3-4 years, and during this period (100-150 thousand km) the engines are well maintained.

As for increasing the resource, the device diesel engine, its fuel supply features and the principle of ignition of the working mixture from compression definitely require warming up power plant before the trip for a number of obvious reasons:

warming up fuel system diesel;
warming up the lubrication system in cold weather;

Read in this article

Fuel combustion

According to manufacturers, the fuel injection systems of modern diesel engines allow you to move immediately after starting the engine; diesel fuel is atomized in the cylinders in such a way that diesel fuel does not wash away the oil film from the surface of the liners.

One way or another, at low air temperatures very often diesel fuel becomes more viscous and its fluidity decreases. The performance of a diesel engine is also affected by the cetane number of diesel fuel, the presence of various impurities and additives, as well as the overall quality of the fuel. Pre-heaters, glow plugs and other solutions are designed to make starting easier, but the efficiency of fuel atomization with diesel injectors still depends on the internal combustion engine reaching operating temperatures. Additionally, it is worth considering that the supply of cold outside air leads to a general decrease in the temperature inside the cylinder.

The volatility of diesel fuel in the warm-up mode deteriorates noticeably. The unit starts, but in a cold engine the diesel fuel settles on the cylinder walls and does not burn completely. If you add loads during movement to this, then the operating conditions for the motor become quite difficult.

For this reason, a diesel engine in winter needs a certain warm-up before driving and increasing loads. As the temperature rises, fuel combustion in the chamber becomes uniform and complete.

Cylinder piston group and crankshaft

It is worth considering that warming up of a diesel engine is not uniform. Some parts heat up faster, others still remain cold. The internal combustion engine elements are made of metal and aluminum alloys (crankshaft, cylinders, pistons, shafts, etc.). As you know, when heated, the body expands, and the heating time and expansion coefficient depend on the material of manufacture.

It turns out that only after the motor reaches operating temperatures are optimal thermal clearances established and the rubbing pairs are properly lubricated. For this reason, the immediate start of movement and additional loads on cold engine reduce its resource.

Heating the engine oil

The design features of diesel engines, compared to gasoline engines, require reduced gaps that are present between the cylinder wall and the piston. Diesel-fuelled internal combustion engines have a high compression ratio, which also means serious loads on the cylinder-piston group.

Part wear is minimized by engine oil. During the cold season, the lubricant in the engine crankcase thickens. After inactivity, only a small oil film remains on the cylinder walls and surfaces of rubbing parts.

After a cold start, the effective operation of the lubrication system begins from the moment the internal combustion engine reaches operating temperature (the oil finally liquefies, heats up and begins to operate under optimal conditions). Turbocharged diesel engines additionally require a high-quality supply of heated fuel. motor oil for lubrication of the turbocharger. The resource of a diesel engine turbine directly depends on this. It is logical that the oil needs to be warmed up a little at idle, and when you start driving, do not subject the engine and turbine to loads until they are completely warmed up.

What's the result?

To answer the question of how and how long to warm up a diesel engine at idle in winter, it is necessary to take into account the specifics of engines of this type. First of all, a diesel engine has high efficiency; it is difficult to warm up such an engine at idle speed in cold weather. The second nuance is the fact that internal combustion engine operation in idle mode (minimum speed) means low oil pressure in the engine lubrication system and refers to severe operating conditions.

It turns out that the best option would be winter warming up for 5 to 10 minutes, depending on the outside temperature. During this time, the coolant in the cooling system warms up by 40-50 degrees Celsius, parts heat up, the oil liquefies, and the fuel in the cylinders burns fully.

After such warming up, you can smoothly start driving in a lower gear and at low speeds. In the warm season, no more than 1-2 minutes of warming up the diesel engine before driving will be enough, and during the ride the engine will quickly and completely warm up.

Finally, let’s add that not only the engine, but also the transmission requires warming up. Particularly sensitive to cold loads automatic boxes torque converter type transmissions, into which oil is also poured. Special transmission oils in automatic transmission they perform not only lubricant, but also working fluid, which is supplied to the box components under pressure.

Is it necessary to warm up a diesel engine in winter?

Warm to victory

Warm, but without fanaticism

autoassa.ru

Do I need to warm up the diesel before driving?

With the onset of winter, you can see that while people are cleaning their cars, the cars are running. Is this really necessary, especially for diesel car owners?

For a long time, motorists have been arguing about the benefits of idling an engine of any type. Some consider this a useless exercise, others bring the system to operating temperature before starting to move. Let's figure out whether it is necessary to warm up a diesel engine.

Those who like to sit down and drive right away cite the words of cool auto repairmen for whom everything worked perfectly without warming up as arguments.

In some operating manuals, vehicle manufacturers also advise starting driving without waiting for the engine to warm up. Naturally, there can be no talk about the durability of the units. For developed countries, it has become common practice to change cars every five years, and engines can withstand this period of use very well.

Why do you need to warm up your car?

In fact, it is very difficult to objectively assess the situation because the engine wears out over a long time, and everyone’s driving style is different.

Experts believe that a cold start wears out the engine by 75%, but the decision to warm up or not to warm up is made only by the driver.

Most engine elements are made of metal, and according to physical laws, when heated, bodies expand after some time. When designing an engine, parts are arranged with minimal clearance, this saves energy when igniting the fuel.

So until all the elements have warmed up to the required temperature, the engine does not work properly. Heavy loads under these conditions will increase wear, so consider whether it's worth the risk.

Of course, manufacturers claim that everything is designed for driving with a cold engine, but they forget to specify one small detail - everything will work perfectly while it lasts guarantee period, no one except the car owner cares about the further fate of the car.

Freezing temperatures outside are another reason to warm up your car before driving. The fact is that oil is used to lubricate the workers, and in winter it becomes very viscous. This consistency prevents the working elements from being fully processed and increases the load on the oil pump.

In addition, along with a decrease in air temperature, the oxygen content in it increases. A high content of this substance depletes the working mixture, which is why starting a car in winter is more difficult than in summer.

How long does it take to warm up the engine?

If you decide that you will warm up the engine before driving, then the next question will arise: “How long will this take?” To achieve the required operating temperature, 7 minutes is enough, during which time the oil will become more liquid and the speed will drop. In order not to waste time, you can sweep the snow from the car and remove the ice on the windows and mirrors.

Do not rush to press on the gas right away; the tachometer needle should not rise above 3 thousand revolutions. The transmission also experiences increased loads when starting to move, because thickened oil interferes with gear shifting.

To determine whether you can start driving, pay attention to the temperature sensor. If the needle reaches 60 degrees in winter, then you can drive calmly: in summer, the operating temperature is considered to be 50 degrees.

But no one forbids you to start driving at lower speeds; you will have to choose a smooth driving style and not accelerate. In this case, the engine cannot produce maximum power and more fuel is wasted.

Why do you need to warm up a diesel engine?

Warming up diesel engines in winter is simply necessary for normal operation vehicle.

In cold weather, diesel car owners experience more problems with a factory, than owners of gasoline cars. This is primarily due to the ignition of diesel fuel (diesel fuel); in the cold, diesel fuel becomes viscous, and the nozzles can hardly spray it.

Three species are known diesel fuel, each of which has its own combustion degree and degree of turbidity:

Summer fuel is used only at positive temperatures;
Winter - allows the temperature to drop to -30 degrees;
Arctic - suitable for the conditions of the far north.

Often, car owners have problems starting the engine precisely because of the use of fuel that does not correspond to the season.

The ignition process in a diesel engine occurs due to the sharp compression of air, which heats up to almost a thousand degrees. Icy winter air also makes the situation worse, but to solve this problem, cars are equipped with glow plugs, they bring the temperature in the combustion chamber to normal, after which you can start the car.

On dashboard In diesel cars, an indicator is specially installed to show the condition of the spark plugs. It begins to glow when you turn the ignition key and goes out when the air temperature in the chamber becomes optimal. This process usually takes no more than 30 seconds depending on environmental conditions.

Many people are interested in whether it is necessary to warm up fuel filter? The answer is yes, this is necessary because diesel fuel sold in Russian Federation, at air temperatures below -15 degrees, a paraffin precipitate forms. Crystals clog the filter and prevent fuel from entering the system.

Special devices for warming up

Auto mechanics suggest installing various heaters on the vehicle to make it easier to start the engine. Such mechanisms are relevant for both diesel and gasoline cars. There are many options available in stores; all that remains is to choose the most optimal one in terms of price and functions; for example, there are models that plug into a regular outlet.

Such devices are especially relevant in cold European countries, where motorists are prohibited from warming up diesel engines. For example, in Austria, you can get a large fine for turning on the engine to warm up, because in Europe they are very sensitive to the environmental situation.

Thus, warming up the engine before driving will significantly increase its service life. Heating up the motor takes only a few minutes, but ensures a comfortable and safe ride. Also, when the operating temperature is reached, the oil that lubricates all mechanisms acquires the desired consistency.

Diesel engines especially need to be warmed up because diesel fuel becomes viscous at subzero temperatures and is difficult to ignite. To determine whether the vehicle is ready to start moving, a spark plug indicator is placed on the dashboard.

Nowadays, in many auto stores you can purchase special devices for warming up your car; they are perfect for motorists who care about the environment.

It’s better to spend a little on preparing the engine for a trip than to change parts later ahead of schedule due to increased wear.

avtodvigateli.com

Is it necessary to warm up a diesel engine in winter?

One of the most discussed topics among motorists is the need to warm up a diesel engine in winter. This issue is relevant for power plants with turbines and “aspirated” engines equally. Almost all drivers are divided into two camps - those who warm up the car, and those who consider it a waste of fuel and time.

To the question of whether it is necessary to warm up a diesel engine in winter, manufacturers today give a clear answer - “warming up the internal combustion engine is not required.” It is worth understanding what this statement is based on. Why did the same manufacturers previously advise warming up engines, but now they have suddenly changed their point of view?

Many manufacturers car engines They claim that their products are so advanced that they work flawlessly even without heating. They begin to explain that earlier the engines were primitive, and the oil was mineral, that scientific and technological progress does not stand still. Well, they don’t say about the water that it was wetter.

Where is the dog actually buried? First: it is not profitable for manufacturers to keep the engine running longer than the warranty period. How faster car will fall into disrepair, the sooner the owner will buy new car. Sales of spare parts and repairs are additional sources of income for corporations. Why miss out on this profit? Therefore, it is profitable for manufacturers to tell tales that “ultra-reliable” modern diesel engines do not require warming up.

The second reason why experts from large companies do not advise warming up engines is concern for the environment. While the diesel engine is warming up, a large amount of fuel is released into the atmosphere. exhaust gases. In cities, it is not uncommon for an owner to warm up a car for 30 minutes in order to travel 10 minutes to work. In Europe, environmental safety issues come before economic feasibility. With us it’s the other way around. We are not saying whether this is good or bad, we are simply presenting the facts.

Interestingly, the same experts confirm that the main wear of engine parts (about 75%) occurs during a cold start. That is, they know that it is not beneficial for the engine to run while it is cold, but they do not recommend heating it either. Strange and incomprehensible.

The theory of warming up a diesel engine in winter

Engines are made of metal. Pistons are usually made of light aluminum alloys, cylinders are made of steel or cast iron. When heated and cooled, these parts expand or contract accordingly. All engine components are precision manufactured to ensure minimal clearance between piston and cylinder. This is the key to efficient use of fuel energy.

When the engine is cold, the clearances between the pistons and cylinders do not correspond to the design parameters. Until the temperature rises to the operating level, the motor does not operate in the mode intended by the manufacturer. If you give full load, the wear of parts will increase, which will lead to a decrease in working life or an accident.

In addition to the thermal expansion factor, there is another problem. Oil viscosity. This parameter greatly affects the operation of the engine. If the lubricant thickens in the cold, it cannot fully lubricate the parts, which leads to an increase in the friction force in all pairs. Wear increases manifold if the engine is running under load.

Obviously, driving with a cold diesel engine is not a good idea. Another question arises: how to warm up a diesel engine in winter. Can this be done at idle? What duration is optimal? Let's figure it out together.

To warm up or not to warm up the engine in winter.

Whether or not to warm up the engine in winter before driving. What is the difference in the operation of gasoline and diesel...

Features of operating a diesel engine in winter

The danger of paraffin in the fuel filter during winter operation of a diesel engine.

How long does it take to warm up a diesel engine in winter?

There is no consensus among diesel drivers on this matter. In this camp they argue about how long to warm up a diesel engine in winter, just as among owners of cars with gasoline engines.

Warm to victory

Some car owners believe that the diesel engine must be heated at idle until the coolant temperature rises to 70°C. Another option is until the speed drops to idle. The feasibility of such an approach seems questionable. Let's figure it out.

Because of design features A diesel engine heats up less at idle than a gasoline engine, and the whole car warms up worse. To achieve a noticeable increase in temperature in winter, you have to warm up the diesel engine for 30 - 40 minutes. During this time, a noticeable amount of fuel is consumed. For example: a three-liter diesel engine will “burn” approximately 200 ml of fuel during 20 minutes of warming up at idle speed.

A noticeable increase in the temperature of the power plant occurs in the first two minutes after startup. Subsequently, there is very little progress. Should you waste fuel and time for a small improvement in performance? Doubtful.

Warm, but without fanaticism

Other drivers answer the question “how to warm up a diesel engine in winter” briefly and clearly: “wisely.” In their opinion, it is enough to let the engine run for a couple of minutes to warm up the oil in the crankcase, and then start driving. The main thing is not to give the engine full load until its temperature rises to the optimal level. You can monitor this indicator using the coolant sensor.

Proponents of this method of warming up a diesel engine in winter believe that the engine warms up faster while driving. Also, when the car is moving, the transmission heats up more actively and chassis. Everything looks reasonable.

Objectively: how to properly warm up a diesel engine in winter

From a technical point of view, warming up a diesel engine in winter is vital. Considering technical features and the mechanics of how car systems work, you can figure out how to warm up diesel engines.

At subzero temperatures, the engine should be started with a full supply of fuel. The clutch is depressed. Running engine warms up within two to three minutes. The crankshaft rotation speed rises gradually to medium. When the device shows that the coolant has warmed up to 40°C, it means the engine is ready for loads.

To make starting a diesel engine easier, you need to turn on the glow plugs several times. These devices are built into the design of modern diesel power units. They help heat the air entering the combustion chamber. In a diesel engine, ignition occurs as a result of heating the highly compressed fuel-air mixture in the cylinder. Heating the air will make starting easier.

What do we get when performing such an algorithm for warming up a diesel engine? In the first two minutes after starting the engine, the oil in the crankcase warms up enough to fully lubricate the cylinder-piston group. A smooth start to movement helps to warm up the transmission lubricant and “develop” the suspension. While driving, the diesel engine warms up faster. Fuel consumption is reduced. After 5 minutes of driving, you can turn on the interior heater, which will speed up the heating of the engine.

From the point of view of the operation of the engine, chassis and other vehicle systems, this method is the most logical. Practical observations show the effectiveness of this method. The gentle starting mode helps protect the diesel engine from breakdown in frosty weather.

How to warm up a diesel engine with a turbine in winter

Recommendations for turbocharged diesel engines are no different from those for atmospheric counterparts. In the same way, you should start the engine, warm it up for a few minutes, and start driving at low speeds in first gear. Warm-up time while driving is about 5 minutes; during this time, use no higher than third gear. Monitor the warming up of the diesel engine using the coolant temperature.

Good result allows the use of special pre-heaters. It would also be a good idea to make life easier for your engine by using special additives - anti-gels. They prevent diesel fuel from thickening in the cold. Many car owners have difficulty starting diesel engines precisely because of thickened fuel. It is especially difficult in winter if the car is filled with summer diesel fuel.

We tried to give a complete answer to the questions of why and how to warm up a diesel engine in winter. We hope you can draw the right conclusions to protect the “heart” of your car from breakdowns on frosty days.

5net.ru

Is it necessary to warm up the car engine?

All about warming up the car engine

Quite often, motorists (especially beginners) have questions about the operation of their iron horse. And they search for many answers to emerging questions for a long time, and sometimes do not find them. This article will discuss the main questions about how to properly warm up a car engine and why it is necessary.

This issue is important for every car enthusiast, and ignorance of some of the nuances can lead to bad consequences. When the engine is not warmed up, the depreciation of parts increases. This is due to differences in the size of the engine parts (until the engine reaches the optimum temperature) and a small amount of lubricant. After the most important unit of the car is completely warmed up, all engine parts begin to work correctly. In the discussion “Is it necessary to warm up a car engine?” Some disagreements and disputes begin between motorists, who give the following arguments:

When idling, the car engine warms up for quite a long time. If you wait for normal temperature conditions in the motor, this means that it will work for a considerable time in unfavorable conditions.
If you heat the main unit of the car quickly, pressing the gas pedal while driving or parking, then the wear of parts will be less. But the result of such tension can be jamming of the pistons or breakage of the cylinder head.

To resolve these disagreements, you need to follow the recommendations of the car manufacturers. By car domestic production According to factory instructions, you can start driving when the engine is warmed up to 45 degrees. Foreign car manufacturers place environmental standards above all else, i.e. It is recommended to drive with a cold engine. In many European countries, car owners are fined if they warm up the engine. But despite this, it is necessary to warm up the engines before driving.

Is it necessary to warm up the engine in summer?

In summer it is necessary to warm up the engine, but some nuances must be taken into account. After the car is started, the driver can drive away in a minute. During this time, all parts have time to be lubricated with oil. To reduce wear on the internal combustion engine, it is necessary to drive smoothly, without sudden movements, until the temperature rises to 50°C.

The driver should also monitor the speed. They should not exceed 2000. Compliance with all recommendations will lead to saving fuel and lubricants and time. This advice is suitable for engines in which high-quality oil is changed and purchased on time, and the oil dipstick should show the recommended level.

How long does it take to warm up the engine in winter?

Even a novice driver knows that in winter the engine of his iron horse must be fully warmed up. Since the oil in the engine and gearbox thickens at sub-zero temperatures. Until the oil becomes liquid, you should never drive at high speeds. The lower the temperature outside or in the room where the vehicle is parked, the more the engine should warm up.

The optimal temperature when you can start driving in winter is sixty degrees. But we must not forget about the above recommendation: “Do not exceed revs up to 2000, drive from 10 to 20 km/h until the engine operating temperature (about 900 on almost all cars).” Also, car owners should take into account that until the engine has warmed up to 50-60 degrees, there is no need to turn on the stove in the cabin, since only cold air.

Is it necessary to warm up an injection engine?

Quite a few car enthusiasts believe that injection engines do not need to be warmed up. This opinion is especially common among Europeans, who thereby care about the environment.

A car with an injector needs to run for at least 1-2 minutes in winter. If the revolutions have become stable and low, the engine is running smoothly, then you can start moving. But under no circumstances should you squeeze out the gas completely, as this can damage the piston system. Synthetic oil is the best choice for cars with injection engines. If the fuel system is operating normally and the recommended oil is filled, then you can warm up the engine in the summer within a few seconds. During this time, the oxygen sensor will warm up and the oil pressure will return to normal.

Is it necessary to warm up a diesel engine?

Many owners of cars with diesel engines and various instructions claim that they do not need to be warmed up. But these assurances are not correct. When the internal combustion engine is not warmed up, the iron horse will move smoothly, without any complaints. But in the most important unit of the car, all parts will work under strain, and their service life will sharply decrease.

For owners of turbodiesel cars, the following recommendation must be observed: “To avoid damage and reduce depreciation of the turbine, it is necessary to warm up the engine for one to two minutes.”

How long does it take to warm up a diesel engine?

This engine should be idled for a minimum of three to five minutes. During this time, all parts will be well lubricated, but provided that the glow plugs are working correctly. Manufacturers recommend warming them up twice. When the glow plug indicator on the instrument panel goes out, this means that the voltage in them is turned off. Many people think that this indicator goes out when the maximum heat.

If you warm up a diesel engine for a long enough time, then deposits of tar and carbon deposits form on the valves. Which can subsequently lead to blocking of the valve or its fit to the seat.

Thus, it is necessary to follow all the rules for operating and warming up a diesel engine. Following this rule will avoid unnecessary depreciation of engine spare parts. Also, owners of cars with such characteristics should avoid driving at high speeds.

On the issue of warming up car engines, experts from the Volzhsky Automobile Plant answer that, provided good quality oil and coolant, it is not advisable to warm up the car for a long time. Since experiments have shown that depreciation of parts with an unheated internal combustion engine during moderate movement practically does not occur. This is explained by the fact that with a light load, when the car is moving from 10 to 20 km/h, and the speed is kept no higher than 2000, the optimal temperature is reached much faster.

Thus, a car enthusiast, following the above recommendations on how long to warm up the engine and how to do it correctly, will significantly extend the engine’s performance over time.

www.autoride.ru

Warming up a car engine - is it a waste of time?

In cold weather, the volatility of diesel fuel drops significantly; settling on the cylinder walls, it loses its ability to ignite, so warming up a car engine in winter for a few minutes is not a whim, but a necessity. We will try to understand all the intricacies of this operation in order to keep the “heart muscle” of the car safe and sound.

Is it necessary to warm up a diesel engine and why?

In some countries, warming up the car is prohibited. For example, in Austria, even clearing snow from the windshield with your hands while the engine is running can earn you a fine. This is how Europeans take care of a clean environment. Is it necessary to warm up a diesel engine at all? How does a cold engine start in winter conditions?

As mentioned earlier, at low air temperatures the viscosity of diesel fuel increases significantly, which negatively affects the quality of its atomization by injectors. Once in the combustion chamber, it instantly settles on the cylinder walls. In addition, supplying cold air to the engine reduces the temperature air-fuel mixture, which makes it much more difficult to launch.

Warming up a diesel engine in winter has a significant impact; it determines the start and operation of the engine, and also affects the cetane number of the fuel, its viscosity, degree of purity, the presence of various impurities and ignition temperature. Therefore, for the operation of such engines in the cold season, a winter type of fuel is produced, which is recommended for use at air temperatures down to -30 ° C.

At lower temperatures, refueling with Arctic diesel fuel is required.

Setting the diesel engine warm-up time

So, how long does it take to warm up a diesel engine in the winter season? The optimal time is about seven minutes. During this time, the engine operates at minimum speed. This is enough for the coolant to warm up to 50 °C. In spring and summer, the warm-up time of a diesel engine can be reduced to 1-2 minutes - this is enough to open the garage door, wipe the windshield and exchange a few words with the neighbors.

To facilitate starting, modern diesel engines are equipped with glow plugs, without which, even at an air temperature of 5 °C, starting them is difficult. After turning on the ignition, a light on the instrument panel lights up, signaling that the spark plugs are working and the air in the cylinders has begun to heat up. Once completed, the indicator goes out and the engine starts without any difficulty.

During the cold season, diesel fuel undergoes paraffinization processes, that is, the precipitation of paraffin crystals, and when the air temperature drops to -14 °C, its passage through the filters is almost impossible. Experience shows that the most optimal solution in this situation is to use local heating of the filter or fuel immediately before entering the filter elements, that is, the use of a preheater.

What else does warming up a car engine do?

To heat fuel in automatic mode When the engine is running, in some cases it is recommended to use a flow-through heater. Modern fuel injection systems allow you to start driving immediately after starting the engine, while diesel fuel is sprayed into the cylinders in such a way that it does not wash away the lubricant from the surface of the liners. Besides, synthetic oil even at low temperatures it does not thicken and perfectly lubricates all engine components immediately after starting it. So is it necessary to warm up the diesel engine in modern cars?

The answer is yes, because the processes in an automatic transmission are completely different, in which the oil not only serves to lubricate the mechanism, but also uses it to engage gears and transmit torque to the torque converter. For this reason, it is supplied under pressure, and therefore it is undesirable to load the gearbox immediately after starting the engine. Even if the engine is warm, it is not recommended to start driving without a slight delay after engaging the gear.

In cold weather, the volatility of diesel fuel drops significantly; settling on the cylinder walls, it loses its ability to ignite, therefore warming up the car engine in winter, for a few minutes is not a whim, but a necessity. We will try to understand all the intricacies of this operation in order to keep the “heart muscle” of the car safe and sound.

Is it necessary to warm up a diesel engine and why?

As mentioned earlier, at low air temperatures the viscosity increases significantly, which negatively affects the quality of its spraying by nozzles. Once in the combustion chamber, it instantly settles on the cylinder walls. In addition, supplying cold air to the engine reduces the temperature of the air-fuel mixture, which makes starting it much more difficult.

At lower temperatures, refueling with Arctic diesel fuel is required.

Setting the diesel engine warm-up time

So, how long does it take to warm up a diesel engine in the winter season? The optimal time is about seven minutes. During this time, the engine operates at minimum speed. This is enough for the coolant to warm up to 50 °C. In spring and summer, the warm-up time of a diesel engine can be reduced to 1-2 minutes- this is enough to open the garage door, wipe the windshield and exchange a few words with the neighbors.

To make starting easier, modern diesel engines are equipped with glow plugs, without which, even at an air temperature of 5 °C, starting them is difficult. After turning on the ignition, a light on the instrument panel lights up, signaling that the spark plugs are working and the air in the cylinders has begun heating. Once completed, the indicator goes out and the engine starts without any difficulty.

During the cold season, waxing processes occur in diesel fuel, that is, the loss of paraffin crystals, and when the air temperature drops to -14 ° C, its passage through the filters is almost impossible. Experience shows that the most optimal solution in this situation is to use local heating of the filter or fuel immediately before entering the filter elements, that is, the use of a preheater.

What else does warming up a car engine do?

To heat fuel in automatic mode while the engine is running, in some cases it is recommended to use a flow-through heater. Modern fuel injection systems allow you to start driving immediately after starting the engine, while diesel fuel is sprayed into the cylinders in such a way that it does not wash away the lubricant from the surface of the liners. In addition, synthetic oil does not thicken even at low temperatures and perfectly lubricates all engine components immediately after starting it. So is it necessary to warm up the diesel engine in modern cars?

Concern for the environment in many countries has led to the fact that warming up a gasoline or diesel car is prohibited by law. Moreover, in the operating manuals, the car manufacturers themselves recommend starting to drive immediately and warming up the engine while driving. It is quite obvious that it was simply relegated to the background, since in developed countries the model range is updated approximately every 3-4 years, and during this period (100-150 thousand km) the engines are well maintained.

As for increasing the resource, the design of a diesel engine, its fuel supply features and the principle of ignition of the working mixture from compression definitely require warming up the power plant before driving for a number of obvious reasons:

warming up the diesel fuel system;
warming up the lubrication system in cold weather;

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Fuel combustion

One way or another, at low air temperatures, its fluidity very often decreases. The performance of a diesel engine is also affected by the cetane number of diesel fuel, the presence of various impurities and additives, as well as the overall quality of the fuel. Pre-heaters, glow plugs and other solutions are designed to make starting easier, but the efficiency of fuel atomization by diesel injectors still depends on reaching operating temperatures. Additionally, it is worth considering that the supply of cold outside air leads to a general decrease in the temperature inside the cylinder.

For this reason, a diesel engine in winter needs a certain warm-up before driving and increasing loads. As the temperature rises, fuel combustion in the chamber becomes uniform and complete.

Cylinder piston group and crankshaft

It is worth considering that warming up of a diesel engine is not uniform. Some parts heat up faster, others still remain cold. The internal combustion engine elements are made of metal and aluminum alloys (cylinders, shafts, etc.). As you know, when heated, the body expands, and the heating time and expansion coefficient depend on the material of manufacture.

It turns out that only after the engine has exited, the optimal thermal clearances are established and the rubbing pairs are properly lubricated. For this reason, immediate start of movement and additional loads on a cold engine reduce its service life.

Heating the engine oil

After a cold start, effective operation begins from the moment the internal combustion engine reaches operating temperature (the oil finally liquefies, heats up and begins to operate under optimal conditions). Diesel engines additionally require a high-quality supply of heated engine oil to lubricate the turbocharger. The resource of a diesel engine turbine directly depends on this. It is logical that the oil needs to be warmed up a little at idle, and when you start driving, do not subject the engine and turbine to loads until they are completely warmed up.

What's the result?

To answer the question of how and how long to warm up a diesel engine at idle in winter, it is necessary to take into account the specifics of engines of this type. First of all, a diesel engine has high efficiency; it is difficult to warm up such an engine at idle speed in cold weather. The second nuance is the fact that the operation of the internal combustion engine in idle mode (minimum speed) means low oil pressure in the engine lubrication system and refers to severe operating conditions.

It turns out that the best option would be winter warming up for 5 to 10 minutes, depending on the outside temperature. During this time, it warms up by 40-50 degrees Celsius, the parts heat up, the oil liquefies, and the fuel in the cylinders burns completely.

Finally, let’s add that not only the engine, but also the transmission requires warming up. Automatic transmissions of the torque converter type, which are also filled with oil, are especially sensitive to “cold” loads. Special transmission oils in automatic transmissions act not only as a lubricant, but also as a working fluid, which is supplied to the gearbox components under pressure.

Why do you need to warm up your car?

In fact, it is very difficult to objectively assess the situation because the engine wears out over a long time, and everyone’s driving style is different.

Experts believe that a cold start wears out the engine by 75%, but the decision to warm up or not to warm up is made only by the driver.

Of course, manufacturers claim that everything is designed for driving with a cold engine, but they forget to clarify one small detail - everything will work perfectly as long as the warranty period lasts, no one except the car owner cares about the future fate of the car.

How long does it take to warm up the engine?

Why do you need to warm up a diesel engine?

Warming up diesel engines in winter is simply necessary for normal vehicle operation.

In cold weather, owners of diesel cars experience more problems with starting than owners of gasoline cars. This is primarily due to the ignition of diesel fuel (diesel fuel); in the cold, diesel fuel becomes viscous, and the nozzles can hardly spray it.

There are three known types of diesel fuel, each of which has its own combustion degree and degree of turbidity:

Summer fuel is used only at positive temperatures;
Winter - allows the temperature to drop to -30 degrees;
Arctic - suitable for the conditions of the far north.

Often, car owners have problems starting the engine precisely because of the use of fuel that does not correspond to the season.

An indicator is specially installed on the dashboard of diesel cars to show the condition of the spark plugs. It begins to glow when you turn the ignition key and goes out when the air temperature in the chamber becomes optimal. This process usually takes no more than 30 seconds depending on environmental conditions.

Many people are interested in whether it is necessary to warm up the fuel filter? The answer is yes, this is necessary because in diesel fuel sold in the Russian Federation, at an air temperature below - 15 degrees, a paraffin deposit forms. Crystals clog the filter and prevent fuel from entering the system.

Special devices for warming up

Diesel engines especially need to be warmed up because diesel fuel becomes viscous at subzero temperatures and is difficult to ignite.

Nowadays, in many auto stores you can purchase special devices for warming up your car; they are perfect for motorists who care about the environment.

To determine whether the vehicle is ready to start moving, a spark plug indicator is placed on the dashboard.

It is better to spend a little on preparing the engine for a trip than to then change parts ahead of schedule due to increased wear.

In some European countries, there is a fine for prolonged warming up, no matter how cold it is outside, so most foreign manufacturers do not recommend warming up their cars.

The main reason for this is environmental pollution.

Features of diesel engine warming up

Warming up for too long will lead to the appearance of resin deposits on the valve, which can cause the valves to begin to lock in the future.

Good lubrication of the rubbing elements and optimal setting of gaps is carried out exclusively after the internal combustion engine reaches the required temperature.

Warming up the engine in winter and summer

A diesel engine needs to idle for at least 5 minutes, this is enough for all components to be properly lubricated (if, of course, the combustion plugs are in working order). The developers advise warming up the spark plugs twice. When their indicator on the panel turns off, it means that the voltage in them has turned off, although most people think that this happens if the maximum temperature is reached.

Operating a diesel engine in the winter requires complete warming up, since the oil in the engine and gearbox begins to thicken at low temperatures. The oil should become liquid and only then can you gain high speed. The duration of warming up depends on the air temperature; the lower it is, the longer you will need to wait.

Pros and cons of warming up

Domestic manufacturers, on the contrary, advise starting movements only when the engine warms up to forty-five degrees.

Speaking about the disadvantages of warming up a diesel engine, first of all, it is worth noting the following phenomena:

Release of harmful substances;
Too much fuel consumption;
Rapid wear of the components of the gas exhaust system;
Spark plugs are subject to high stress.

Advantages of diesel engine warming up:

All of the above tips will help the driver save time and avoid further problems with the diesel unit, as well as significantly extend its service life.
The vehicle moves smoothly and without jerking.

It is necessary to choose the right diesel fuel for a certain time of year. In addition to winter and summer fuel, there is also arctic fuel, which will only be needed at the lowest temperatures from −40 degrees Celsius. When using summer fuel in winter, diesel fuel will turn into a kind of jelly, which will make it impossible to warm it up; in addition, it will lead to clogging of air and fuel filters.

To optimize the temperature in the combustion chamber during extreme cold, you can try switching the ignition three to five times. Then warming up the engine will be easier and faster.

In winter, it will take five to ten minutes to warm up a diesel engine with a turbine, and about 2 minutes in summer. No longer necessary, as this will lead to overheating of the engine.

In order to warm up, you must first start the engine; for the first two to three minutes it should operate at idle speed and only after that you can move off. It will not be able to reach the desired temperature during this time and will continue to heat up while moving.

Why is oil warming necessary?

The functioning of the engine is greatly influenced by the octane number of the fuel assembly, the quality of the fuel, and the presence of additional additives. For easier starting, many use pre-start devices, glow plugs, etc. But still, how effectively diesel injectors will spray fuel depends only on the temperature of the power unit.

If the car has an automatic transmission, then it is necessary to warm up the engine, since the oil in the box must warm up to the required temperature.