It is pointed that engine s various faults can make the gas acting pressure lower in individual cylinders, lead to worsen the balance of gross overturn moment, and wobble the idling engine.

• 指出,由于发动机的各种故障引起个别气缸气体作用力减小,导致总的反倒力矩平衡性恶化,出现怠速抖动。