During this period, the oil price of cars is very expensive, and car maintenance is very difficult. Poor car maintenance will give people the illusion that there is more and more oil and the oil price has risen sharply, so car maintenance is particularly important. If the car is well maintained, the oil price of the car may be greatly reduced, so the maintenance fee of the car is a necessary expense. But what kind of fuel economy is a good secret? The first thing to pay attention to is cleaning the suitcase. Don't underestimate this, it is a very important detail. Because weight is actually related to fuel consumption. The greater the weight, it will also have a certain impact on the fuel consumption of vehicles. Therefore, it is very helpful to remove the sundries in the light box and abide by the overload standard of no more than 5 people. This can not only reduce the high fuel cost, but also refuse to overload for your own driving safety. After all, life is really precious!

Check the working condition of carburetor, fine-tune it when appropriate, and clean it thoroughly. Engine carbon deposits should also be cleaned regularly like carburetors. The spark plug of the car should also be carefully checked and replaced as soon as possible. Because in the end, with the increase of service life, the performance will also drop a lot, affecting the use of gasoline. When it comes to car fuel consumption, we must first understand a principle. Is the conservation of energy. Energy doesn't disappear, it doesn't come out of thin air, it just changes from one form to another. John F. Kennedy, an energy famous saying) automobile is essentially an energy converter, which converts the chemical energy of fuel into mechanical energy, and then drives the automobile. Driving force is needed when a car is running, and the driving force is generated by mechanical energy converted from fuel. Therefore, the essential reason of automobile fuel consumption is the demand for mechanical energy. It should be pointed out that all energy sources of automobiles are caused by fuel combustion, including air conditioning, warm air, acoustics and lighting. Therefore, the more electronic devices in the car, the higher the frequency of use, and the higher the fuel consumption of the car.

The energy conversion of a car should also follow the law of conservation of energy, so it consumes a certain amount of energy while enjoying comfort, which must be generated by fuel combustion, so the fuel consumption of a car will naturally increase. The level of automobile fuel consumption is essentially the amount of energy conversion. Therefore, the conversion efficiency of fuel and the demand for mechanical energy of automobile will directly affect the level of automobile fuel consumption.

In the process of converting chemical energy of fuel into mechanical energy, only a part of chemical energy produced after fuel combustion is converted into mechanical energy, and most of heat energy is lost. This conversion rate is generally called the thermal efficiency of the engine. The higher the thermal efficiency, the lower the fuel consumption of the car. At present, the thermal efficiency of gasoline engines is generally between 35% and 40%, while that of diesel engines is relatively high, generally between 38% and 45%. Therefore, diesel engines are more fuel-efficient than gasoline engines and diesel engines with the same displacement, which is why. It is very difficult to improve the thermal efficiency of the engine. In the 100 years since the birth of the engine, the thermal efficiency has only increased from 20% at the beginning to more than 30% now. Especially in recent years, the thermal efficiency of the engine has reached the bottleneck, and every increase of 1 percentage point is a great progress.