What does 400cc mean?

[LaBrooklyn]

Generally refers to heavy motorcycles with an engine displacement of 400cc or above. Powered by gasoline engines, these two-wheeled or three-wheeled vehicles are steered by handlebars controlling the front wheel. They are lightweight, flexible, fast-moving, and widely used for patrols, passenger and cargo transportation, and also serve as sports equipment. In China, motorcycles with displacements exceeding 400cc are generally referred to as heavy motorcycles. Below is additional information on how motorcycles work: Intake: At this stage, the intake valve opens, the piston moves downward, and the mixture of gasoline and air is drawn into the cylinder. Compression: At this stage, both the intake and exhaust valves close, the piston moves upward, and the mixture is compressed. Combustion: When the mixture is compressed to its minimum, the spark plug ignites the mixture, and the pressure generated by combustion pushes the piston downward and drives the crankshaft to rotate. Exhaust: When the piston reaches its lowest point, the exhaust valve opens, expelling the exhaust gases, and the piston continues to move upward to expel any remaining exhaust gases.