Second, the classification of automobile engines
1. According to the working mode of the intake system, it can be divided into four types: natural inspiration, turbocharging, mechanical supercharging and double supercharging.
2, according to the piston movement mode can be divided into reciprocating piston engine and rotary piston engine two kinds.
3. According to the type of cylinder arrangement, it is divided into in-line engine, V engine, W engine and horizontal opposite engine, etc.
4, according to the number of cylinders can be divided into single-cylinder engine and multi-cylinder engine. Modern cars mostly use three-cylinder, four-cylinder, six-cylinder and eight-cylinder engines.
5. According to different cooling methods, it can be divided into water-cooled engine and air-cooled engine. Water-cooled engines are widely used in modern vehicle engines because of their uniform cooling, reliable operation and good cooling effect.
6. According to the number of strokes, it can be divided into four-stroke and two-stroke internal combustion engines. The four-stroke internal combustion engine is widely used in automobile engines.
7. Classified by fuel supply mode: carburetor engine, electric injection engine and in-cylinder direct injection engine
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