That will depend on the application of your IC engine.Vignesh said:
The main parameters that affect engine design include the size and shape of the combustion chamber, the number of cylinders, the stroke length, the bore diameter, and the compression ratio.
The size of the combustion chamber directly affects the engine's power output and fuel efficiency. A larger combustion chamber allows for greater air and fuel mixture, resulting in more power. However, a smaller combustion chamber can lead to better fuel efficiency.
The number of cylinders in an engine determines its displacement and power output. More cylinders generally mean a larger displacement and more power, but it also increases the engine's size and weight. Fewer cylinders result in a smaller engine but with less power.
The stroke length and bore diameter directly affect the engine's displacement, which is a key factor in determining its power output. A longer stroke length and larger bore diameter result in a larger displacement and more power, while a shorter stroke length and smaller bore diameter lead to a smaller displacement and less power.
The compression ratio is the ratio of the volume of the combustion chamber when the piston is at the bottom of its stroke to the volume when it is at the top of its stroke. It affects the engine's power and efficiency, with a higher compression ratio resulting in more power but also a higher risk of engine knock. A lower compression ratio leads to less power but also a lower risk of engine knock.