How to Identify Whether an Engine is a Three-Cylinder or Four-Cylinder?

[DeBrooklyn]

Methods to distinguish between three-cylinder and four-cylinder engines: You can identify them by the number of cylinders. A three-cylinder engine has one less cylinder than a four-cylinder engine, resulting in noticeable vibrations during operation and relatively poorer stability. Due to having one less cylinder, three-cylinder engines consume less fuel during operation and require relatively simpler maintenance. The structure of a three-cylinder engine is simpler, with fewer mechanical friction surfaces during operation. Compared to a four-cylinder engine, a three-cylinder engine lacks one set of piston connecting rods, leading to shorter crankshafts and camshafts. This reduction in mechanical friction indirectly improves the engine's thermal efficiency.