What does 3-cylinder mean?

[KevinMarie]

Automotive three-cylinder refers to a three-cylinder engine, which is an engine composed of three cylinders. Inside it, three identical single cylinders are arranged on one engine block, sharing a crankshaft to output power. Its basic principle is that when the chemical energy of gasoline (diesel) is converted into thermal energy, the mixed gas inside the sealed cylinder combusts and expands, pushing the piston to perform work, thereby converting thermal energy into mechanical energy. The automotive engine is the device that provides power for the car, serving as the heart of the vehicle, determining its power, fuel economy, stability, and environmental performance. Depending on the power source, automotive engines can be divided into diesel engines, gasoline engines, electric motors, and hybrids.