In effect,the fly wheel absorbs power from the engine during the power stroke(or speedup time)and then gives it Back to the engine during the other three strokes(or slowdown time)of the cycle.

• 事实上,飞轮在做功行程(或加速过程)中贮存动能,而在其它三个行程(或减慢过程)中,把动能释放出来