Compression ratio of internal combustion engines
The information comes from:the Internet posted on:2023-06-14
What is the compression ratio of an engine? Whether it is a gasoline engine or a diesel engine, maintaining a stable and appropriate compression ratio is essential to ensure smooth and stable engine operation. The definition of compression ratio is the degree to which the engine's mixed gas is compressed, expressed as the ratio of the total volume of the cylinder before compression to the volume of the cylinder after compression (i.e. the combustion chamber volume). At present, the absolute majority of internal combustion engines use the so-called 'Reciprocating engine'. To put it simply, there is a piston in the engine cylinder that repeatedly makes a linear reciprocating motion and keeps cycling. Therefore, there is a certain range of motion in this cycle of continuous working strokes. For a certain cylinder in the engine, when the piston's stroke reaches the lowest point, the position point is called bottom dead center. The volume formed by the entire cylinder, including the combustion chamber, is the maximum stroke volume. When the piston moves in the opposite direction and reaches the highest point position, this position point is called top dead center. The volume formed is the minimum volume of the entire piston's stroke, and the compression ratio is the ratio of the maximum stroke volume to the minimum volume
