发动机转速平衡波形显示各缸点火时的发动机瞬间转速变化波形,这个波形反映出由所有气缸决定的发动机转速变化情况,分析发动机转速平衡波形可以用于确定:①各个气缸对发动机总功率的贡献。②哪个或哪些个气缸没有发挥作用。点火顺序显示在屏幕的上下方两侧,(图237)当气缸数超过10个时,点火顺序只 The engine speed balance waveform shows the engine instantaneous speed change waveform at the time of ignition of each cylinder. This waveform reflects the change of the engine speed determined by all the cylinders. The analysis of the engine speed balance waveform can be used to determine: ① the contribution of each cylinder to the total engine power. ② Which cylinder or cylinders did not work. Ignition order displayed on both sides of the upper and lower screen (Figure 237) When the number of cylinders more than 10, the firing order