Engine Oil Pressure - Test
下述情况会导致机油压力低。
- 曲轴箱中的油位低。
- 吸油滤网上发生阻塞。
- 机油管接头泄漏。
- 连杆或主轴承磨损。
- 机油泵中的转子磨损。
- 机油压力安全阀工作异常。
机油安全阀磨损可能会使机油通过安全阀时发生泄漏,从而降低机油压力。 有关正确的工作压力及其它信息,请参阅规格模块, "发动机机油安全阀"。
当发动机在正常温度下高怠速运转时,机油压力必须至少达到 280 kPa (40 psi)。 低怠速时机油压力低是正常的。
可以使用适当的压力表测试润滑系统的压力。
机油压力高可能由以下情况引起。
- 机油安全阀弹簧安装不正确。
- 机油安全阀柱塞卡在关闭位置。
- 机油中有大量油泥,使机油粘度过高。
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