摩托车发动机是将其燃烧室内可燃混合气燃烧产生的热能转化为机械能的一种热机。其基本原理是将由燃烧产生的推力推动活塞做的往复直线运动转化为曲轴的旋转运动,进而对外输出作功。作为摩托车消费者,最关心的莫过于发动机的动力性能。衡量发动机动力性能的 A motorcycle engine is a heat engine that converts the heat energy produced by the combustion of a combustible mixture in a combustion chamber into mechanical energy. Its basic principle is to convert the reciprocating linear motion made by the thrust generated by the combustion into reciprocating linear motion of the crankshaft to perform the output work. As a motorcycle consumer, the most concerned about the engine’s dynamic performance. Measure engine power performance