What should I do if I have too much gas in my diesel car?

If you add more gasoline to a diesel car, you can pump it out appropriately, and then add diesel to mix it up.

Diesel has a much higher ignition point than gasoline, which has a very low ignition point and does not need to compress air to burn. This is why the diesel engine and gasoline can still be started (but the gasoline contains less carbon, which is why the gasoline engine is less powerful than the diesel engine), but the reason why the gasoline engine should be ignited by a spark plug is: in order to reduce the stroke of the cylinder (that is, the compression ratio), we all know that the longer the stroke of the cylinder, the engine will work very roughly, the vibration and noise will be very large, and when the stroke of the cylinder is very long, the maximum speed of the engine will be much lower, and the speed will be low. The power is small.

Moreover, gasoline contains less carbon and does not require much air to burn, and gasoline is a flammable and explosive oil, which can be ignited by spark plugs to generate sparks. That's why gasoline engines can reach very high speeds. (Generally it can reach about 6000 rpm), so the compression ratio of the general gasoline engine is 1:

Left and right, some larger, are to improve fuel economy.

Diesel contains a lot more carbon than gasoline, which is why there is a lot of black smoke from trucks on the road. With a lot of carbon and a high ignition point, making the compression ratio a little larger is a double win. Generally 1:

Around 17. The reason why the spark plug is not used is because the ignition point is high, and it cannot be lit with a spark plug.

Finally: gasoline can be compressed and ignited, I don't believe you try to put gasoline into a diesel engine, but gasoline contains much less carbon than diesel, and it is very boring to drive. If the gasoline engine is ignited with compression, the compression ratio will be much larger than that with a spark plug, and the consequences will be:

The gasoline engine works roughly, rotates slowly, makes noise, has low power and other shortcomings!

So: a diesel car can still start with gasoline, but it doesn't have any strength.

It is recommended that you put the oil down.

Otherwise, it will smoke suddenly.

If it's too powerful, you will destroy the car.

Diesel cars and gasoline cars are not the same...

In fact, most car owners will not find out in time. Instead, I realized that there was an abnormality in the vehicle after driving for a while. In this case, it is necessary to stop the car immediately and call for rescue, and when you arrive at the repair shop, in addition to draining the diesel, you must also do a comprehensive inspection of the car.

The car mixed with a large amount of diesel cannot be started at all, and even if the start is successful, there will be a phenomenon of inability to accelerate and shake, because diesel has high energy density and low fuel consumption rate, and can only spontaneously combust in the cylinder at high temperature and high pressure. Gasoline volatilizes quickly and absorbs the surrounding heat when it volatilizes, so it is necessary to use a spark plug.

The diesel engine works in a compression-ignition manner. The ignition point of diesel is low, and it can be reached by compressed air without ignition without a spark plug, and then the diesel can be burned by itself by injecting diesel. If the gasoline engine enters the diesel, the diesel has already been compressed and ignited before the spark plug ignites, resulting in abnormal pressure in the combustion chamber and the so-called detonation phenomenon.

Diesel vehicles are more fuel-efficient than gasoline vehicles, which is determined by the technical characteristics of the engine. Because the compression-ignition diesel engine has a higher energy conversion than the ignition gasoline engine, the energy consumption is 45%-60% of the gasoline engine, and the diesel ** is lower than the gasoline**, the engine has less complex high-pressure ignition device than the gasoline engine, and the life is generally longer than the gasoline engine product, so the fuel economy of the diesel engine is better than that of the gasoline engine.

At the same time, diesel engines also have outstanding advantages over gasoline engines in terms of safety and environmental protection.

Diesel fuel is not volatile, has a high ignition point, and is not easy to be ignited or occur due to accidental circumstances**; The emission of carbon dioxide is also about 30%-35% lower than that of gasoline engines, and the exhaust emissions of diesel vehicles are better than those of gasoline vehicles.

In addition, the diesel engine is also very small in terms of power and gasoline engine, some performance parameters are even better than gasoline engine, for example, the low-speed torque of diesel engine is relatively large, which is reflected in the diesel car climbing ability is stronger than gasoline car, and the acceleration at low speed is faster than that of gasoline engine.

At present, the diesel quality in most parts of the country simply cannot meet the requirements of the latest Euro III and IV emission standards for diesel engine technology, and the fuel with higher sulfur content will not only lead to the deterioration of the diesel vehicle emission system, but also shorten the engine life and increase the repair and maintenance costs.

In addition, most of the domestic consumers' awareness of modern diesel engines is still very low, and most people still stay in the 70s of the last century on the understanding that the black smoke is billowing and the noise is unbearable, and there will be great resistance to diesel cars. With the development of new diesel engine technology, diesel vehicles have made great progress in exhaust emissions and noise reduction.

Although both gasoline and diesel engines are internal combustion engines, because of the low ignition point of diesel, it is around 220°; The ignition point of gasoline is as high as 410° to 430°, and the difference in ignition point also causes differences in the operation mode of the internal combustion engine.

First of all, the pressure of the fuel injector of the diesel engine is greater than that of the fuel injector of the gasoline engine, and after the diesel is added to the gasoline engine, the pressure of the fuel injector is not enough, resulting in insufficient atomization of the diesel engine, which can only be partially atomized. As a result, some diesel fuel directly enters the cylinder in the form of liquid, which is not fully combusted, easy to accumulate carbon, and will clog the fuel injector. In this way, you will feel that the engine is weak when driving, and it will be meaty to run.

This is caused by inadequate combustion.

In addition, the diesel has a low ignition point, and the diesel has reached the auto-ignition temperature before the spark plug ignites, and it starts to burn violently! The disease caused by it is the legendary "detonation".

If you do add a lot, don't worry. Don't start the car again, quickly find a 4S shop or car repair shop, put the wrong oil out, clean the oil circuit, fuel tank, and add the right fuel. However, it should be reminded that although brands such as BMW and other brands provide roadside assistance services, because this situation is caused by human reasons, the rescue is charged, and the cost depends on the distance.

If you start without ignition, you only need to clean the fuel tank, otherwise the oil tank oil circuit and the engine will be cleaned. If you run on the road for a while, the engine will be damaged.

Secondly, tow the car to the 4S shop and then clean the oil circuit of the whole car, and then add gasoline for a test drive.

Don't start the car, call a tow truck, drain the oil, clean the oil circuit, fuel tank, engine, etc. If you can't get it, go to 4S.

What should I do if I have diesel in my petrol car?

This can be divided into two scenarios:

Situation 1: After finding that the wrong fuel is added (a whole tank of diesel fuel is added by mistake), remember not to ignite the car to avoid diesel entering the oil circuit. Then tow the car to a 4S shop or repair shop, put the diesel clean, and then add gasoline.

If the diesel is only added a little (no more than 5-10% of the tank volume), if you find it in time, there is actually no big problem, just fill up the gasoline, and it will not have any effect.

Situation 2: In fact, most of the friends who add the wrong fuel will not find out in time, but only realize that the vehicle is abnormal after driving for a period of time (severe vibration or poor acceleration is the most obvious phenomenon), or it has turned off the engine.

In this case, rescue was also called immediately, and in addition to draining the diesel fuel at the repair shop, it was also necessary to clean the oil circuit, replace the gasoline filter, and do a full inspection.

In most cases, the engine stalls before the knock is severe enough to destroy the engine, and it usually doesn't happen as tragic as the one shown below. If the 4S shop or repair shop fools you into saying that you want to change the engine, you have to ask him to take it apart and look at it.

Foreign car programs have also done experiments before, gasoline plus diesel, diesel cars with gasoline, to see what happens, diesel cars with gasoline, the consequences may be more serious.

It's hard to get in the car, or not to get in the car, black smoke is for sure!

Adding diesel fuel to gasoline cars will lead to poor fuel atomization, some cars with low compression ratio and fuel injection pressure, adding diesel fuel will not ignite at all, and diesel fuel that is not completely atomized will affect the ignition performance of the spark plug, so the performance of gasoline cars with average performance, add diesel or turn off or not move at all.

Diesel can be ignited, but the power is weak and the output is extremely unstable, even if you press the accelerator too hard, the speed will not be raised. The logic of fuel injection in gasoline vehicles is different from that of diesel vehicles, in which diesel vehicles are injected during the compression stroke, but gasoline vehicles are injected with a small amount of fuel at the beginning of the suction or compression (lean burning) stroke, and there is a possibility of detonation in turbocharged direct injection vehicles with high compression ratios and diesel.

Notes:

Gasoline and diesel are fuels with different characteristics of the two, diesel in addition to high energy density, and gasoline also has a difference is volatility, diesel has a lower ignition point than gasoline, but because of poor volatility, it is not easy to ignite. It is also because diesel is not easy to volatilize in the air, so diesel is better than gasoline in terms of safety.

The main difference between a diesel engine and a gasoline engine is the ignition system and the fuel supply system. Diesel fuel is ignited by air compression and exothermics, so diesel engines do not have an ignition system, but diesel vehicles are particularly dependent on fuel supply systems, and diesel fuel cannot be fully atomized and injected quickly without sufficient fuel injection pressure. The fuel injection nozzle pressure of 250 bar is quite high, but the fuel injection pressure of diesel vehicles is easily 2000 bar.

1. Remove the fuel tank, drain the diesel fuel thoroughly, and wash it 3 times with an appropriate amount of gasoline.

2. Remove the spark plug. Get the oil out and replace the diesel filter Otherwise it will cause a lot of damage to your oil pump and fuel system.

3. Add an appropriate amount of gasoline and start it repeatedly with the starting lever for 10-20 minutes, the purpose is to let the gasoline flush out the diesel fuel in the carburetor.

4. Finally, press the spark plug and try to start. If that doesn't work, "rinse" again.

It is recommended that you clean the tank immediately, diesel is denser than gasoline, and diesel will sink when stationary. Gasoline will be on it. The first thing that goes into the engine is diesel, which is very dangerous, so don't drive it.

The whole car must be cleaned! Fuel injectors, gasoline filters, etc., it is best to change the gasoline filter, and it is best to carry the mailbox down and clean!

If the diesel engine is filled with gasoline, if the amount is small, it can not be treated, and if the amount is large, it must be poured out and the fuel tank should be cleaned again.

1. If you find that the diesel car is filled with gasoline by mistake for the first time, do not start the engine casually. Call for help immediately and wait for the vehicle to be towed to the 4S shop.

After that, all the oil in the oil tank is discharged, and then the oil circuit is cleaned to minimize the loss.

2. If you find out after driving for a while, you should also go to the 4S store for treatment and replace the oil-water separator as you did for the first time.

and diesel filters.

Diesel engines originally used compression ignition to process fuel, and the heat generated by the compression of air in the cylinder ignited the fuel, that is, the air compression will increase the temperature, and when the temperature is higher than the ignition point of the diesel, the diesel will burn.

The ignition point of gasoline is much lower than that of diesel, and if you put gasoline into the diesel engine, it will cause the gasoline to burn prematurely, and the diesel will also be lit in advance. If this continues for a long time, the internal parts of the engine will be damaged.

If the diesel engine is filled with gasoline by mistake, the vehicle must not be started, otherwise it will lead to engine failure, and the engine will be directly scrapped

First of all, it is certain that diesel cars should never be added with gasoline. Because diesel engines and gasoline engines use different ignition methods, the types of oil used are very different, so it is recommended to call a trailer to tow to a professional repair shop for cleaning and maintenance.

The relevance is as follows. Diesel engine: The diesel engine has high torque and outstanding load capacity, so many cargo transport vehicles and hard-core off-road vehicles will choose diesel engines, and this series of advantages depends on the special ignition and combustion mode of diesel engines.

The common ignition methods are divided into ignition and compression ignition, while the diesel engine is the compression ignition, the so-called compression ignition is after the diesel enters the combustion chamber.

It mainly relies on the pressure of the piston in the cylinder to ignite the diesel, so it requires a large compression ratio, and then outputs more torque, so the diesel engine is relatively more powerful than the gasoline engine, and the instantaneous acceleration is faster.

Don't panic when adding the wrong oil, be calm.

1. If you just add a little bit and find out, then it's nothing, just continue to add gasoline and drive directly.

2. If you add a whole tank of diesel, then I mind if you drive to a nearby car repair shop to empty the oil and let the car mechanic help you clean it up.

3. Clean the fuel tank and oil circuit, check whether the engine and other parts are damaged, and then find the insurance company to check whether you can make a claim.

It has no effect on other parts. Hope.

Diesel car gasoline, the problem is more serious, should be cleaned as soon as possible fuel tank and oil circuit system, and then the engine is fully checked, do not start rashly to avoid injury to the car. The phenomenon is that the car starts to function normally, but after driving a certain distance, the car becomes sluggish and the idle speed becomes unstable.