What is the compression ratio of the Changan Oshan X7 engine?
1 Answers
The compression ratio of gasoline engines in sedans is 8-11. Specific details are as follows: 1. Compression ratio: An important parameter for measuring the performance of a car engine is the compression ratio, which refers to the ratio of the total cylinder volume to the combustion chamber volume. It indicates the degree to which the gas in the cylinder is compressed when the piston moves from the bottom dead center to the top dead center. 2. Different engine compression ratios: Gasoline engines are spark-ignition type with a low compression ratio; diesel engines are compression-ignition type with a high compression ratio. The compression ratio of gasoline engines in sedans is 8-11, while that of diesel engines is 18-23. 3. Relationship between compression ratio and engine performance: Generally speaking, the higher the compression ratio of the engine, the greater the power of the car, the more complete the combustion, and the less pollution. Compression ratio: It refers to the degree to which the engine's mixed gas is compressed, expressed as the ratio of the total cylinder volume before compression to the cylinder volume after compression (i.e., the combustion chamber volume). The compression ratio has a significant relationship with engine performance. Typically, a low compression ratio refers to a ratio below 10, while a high compression ratio is above 10. Relatively speaking, the higher the compression ratio, the greater the engine's power.
