Car repairs and maintenance are a big headache for everyone. If you don't take good care of your car or have a bad habit of driving, you will have to pay a considerable amount of money, time and mental torture once your car has to be overhauling. Therefore, the car should always pay attention to maintenance, from the first day you have a car on careful maintenance, so as not to lose a penny for a pound, this paper mainly explains the maintenance and maintenance of the car engine from the perspective of theoretical knowledge of the car.

Is an important part of the vehicle, related to the use of the vehicle performance and driving safety. In the running process of the car, we should especially prevent the early wear of the engine, prevent the abnormal damage of the engine, the correct and reasonable use of the engine, can effectively extend the service life of the engine. However, due to improper operation and untimely maintenance and repair, the engine will be damaged, directly affecting the technical performance and economy of the car. Therefore, we should pay attention to the maintenance and repair of the engine. Engineering machinery Engine maintenance An engine is a machine that converts a form of energy into mechanical energy. Its function is to convert the chemical energy of liquid or gas into heat energy after combustion, and then convert heat energy into mechanical energy through expansion and external output power. The power of a car comes from a generator. Engine is the heart of the car, for the car to walk to provide power, power, economy, environmental protection of the car. Simply speaking, an engine is an energy conversion mechanism, namely, the thermal energy of gasoline (diesel) is converted into mechanical energy by pushing the piston to do work when the gas is expanded by burning in the sealed cylinder. This is the most basic principle of an engine. Engine all structure is in the service of the energy conversion, although the engine with the car passed 100 years of history, both in the design, manufacture, process and performance, the control has the very big enhancement, its basic principle still has not changed, this is an era of creativity, the engine designers, constantly with the latest technology and engine, the engine into a complex electromechanical integration products, make the engine performance achieve almost perfect degree, the world famous auto makers will also highlight engine performance as a competitive