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The Binance exchangerole of the car engine: to provide power for the car. The engine of a car is the core part of the whole car. Its function is to provide power for the car and drive the car to drive. Without an engine, cars can't drive and can only become a means of transportation. So what is the function and principle of the car engine? This article will introduce in detail. I. The basic principle of automobile engine. The function of automobile engine is to mix liquid fuel with air to burn, convert the energy generated by combustion into mechanical energy, and promote automobile movement. In essence, the engine only converts chemical energy into mechanical energy. This energy conversion process is done through four strokes, which we generally call a four-stroke engine.The first stroke: air intake stroke. The piston moves down to suck the gas into the cylinder. The second stroke: compression stroke. The cylinder is sealed, and the piston moves upwards to compress the gas and raise the gas temperature. The third stroke: combustion stroke. Under the injection action of the fuel injector, the mixed gas is ignited and the combustion produces high-temperature and high-pressure gas. The fourth stroke: exhaust stroke. The piston moves upwards again, opens the exhaust port, and discharges the exhaust gas out of the cylinder to prepare for the next working cycle. The above is the working principle of the four-stroke engine, which realizes the conversion of energy through continuous circulation, so as to drive the car to provide a power source. II. Classification of automobile engines According to different power and form, automobile engines can be divided into the following types: 1. Internal combustion engine: Internal combustion engine is the most common engine at present. The working principle of the internal combustion engine isBurning fuel in the cylinder drives the piston to move the high-temperature and high-pressure gas generated by combustion, so as to achieve energy conversion. This kind of engine can also be divided into naturally aspirated and turbocharged engine according to the intake mode. Two. Electric motor: The electric motor converts electrical energy into mechanical energy, and the vehicle power is provided by the drive motor. Due to the increasing proportion of electric vehicles in the automobile market, electric motors have become an important source of automobile power. 3. Thermal machine: The thermal machine uses fuel combustion to generate thermal energy, and then converts thermal energy into mechanical energy through the thermal energy conversion device. Thermal engines generally use coal, oil, natural gas or other fuels as heat sources, so they consume a large amount of fuel. III. Maintenance of automobile engines Automobile engines are one of the main parts of automobiles. If they are not maintained, they will lose efficiency and affect their performance.The following are the maintenance methods of automobile engines: 1. Change oil: Oil is the most important protective lubricant for the engine. It can reduce wear, reduce engine temperature, and extend the service life of the engine. It is recommended to change the oil every 5,000 kilometers. Two. Replace the air filter: The air filter can prevent dust and purify atmospheric particles from entering the engine. The frequency of replacing the air filter depends on the driving conditions. It is generally recommended to replace it every 15,000 kilometers. 3. Replace the fuel filter: The fuel filter can keep the engine fuel flowing smoothly and prevent damage to the engine due to debris. The time to replace the fuel filter depends on the quality of the oil. It is generally recommended to replace it every 20,000 kilometers. Four. Replace the spark plug: The spark plug is the core of the ignition system. If there is a problem with the spark plug, it may cause the performance of the car to decline.It is recommended to replace the spark plug every 25,000 kilometers. In a word, the engine plays an important role in the car, so the maintenance of the engine is very important. Only by strengthening the maintenance of the engine can we improve the service life of the car and ensure the safety performance and use effect of the car.

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