What is the compression ratio of gasoline and diesel engines?

[EmilyFitz]

The compression ratio of a gasoline engine is 1:10, while that of a diesel engine is 1:23. Below is an introduction to compression ratio: 1. Introduction: Compression ratio 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, represented by ε. 2. Research Purpose: During the operation of an internal combustion engine, as the air and fuel in the cylinder decrease, the ignition of the engine tends to become abnormal. With an increase in the air-fuel mixture, knocking is more likely to occur, thus limiting efficiency. As one of the key parameters affecting factors such as torque, fuel economy, and emission indicators, the compression ratio is crucial in addressing this issue. Therefore, selecting an appropriate compression ratio to achieve a balance among these parameters is an important way to enhance the performance of internal combustion engines.