【摘要】 分析了发动机正常运转时的激振源以及它们可能发生的变化。发动机的各种故障会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,致使发动机横向摆动加大,出现怠速异常振动。通过建立发动机振动测试系统对上述结论进行验证。更多还原

【Abstract】 When an engine is running normally,the excitation sources and changes that are likely to occur are analyzed. Various faults of an engine can make the gas acting pressure lower in individual cylinders,leading to the worsening balance of gross overturn moment and more engine side vibrations,with the idling engine wobbling.The above-mentioned results are validated through the development of the engine vibration test system.更多还原