依维柯发动机下排气漏油是什么原因?

2025-03-16 23:42:57
推荐回答(2个)
回答1:

四配套磨损过度。造成气缸漏气严重,废气压力过大就会从废气孔漏出。时间长了就会有机油蒸汽流出,在废气管凝结形成机油在漏出,
再就是汽缸垫冲坏,高压气体从缸盖螺丝出冲去,造成曲轴箱油底壳 废气压力过大。
气门密封不严,导管间隙过大,漏气严重。

回答2:

  汽车漏油原因
  (1)方向机蜗轮箱两底孔与箱内畅通,螺孔漏油。由于原机螺孔钻透,或保修时将螺孔用较长的螺杆顶通或顶裂,箱内的滑油沿着螺纹向外渗透。
  (2)底盖漏油多是由于铸造的原因,使盖平面凸凹不平或导管孔与两平面不垂直,造成铆合不严或导管偏斜。
  (3)垫片部分渗漏常是因用黄板纸的缘故。黄板纸对油的吸附性强,再加上螺栓扭矩不均,使侧盖、底盖变形,垫片数量调整不当时就会漏渗。
  (4)油封处漏油一般是油封质量不高,或油封外径与座孔松动未能达到过盈配合,转向蜗杆箱的转向臂轴承孔与油封承座孔同心度超差,在转向臂轴油封处渗漏。或因转向臂轴松旷,轴径失圆、锥形而渗漏。
  (5)方向机其他部分的渗漏是因壳体裂纹、砂眼、气孔或螺孔边侧的金属疏松,这是配件的弊病。
  漏油处理方法
  (1)针对螺孔漏油的情况应在螺栓根部加纤维线或垫来密封。
  (2)底盖漏油就应该应重新加工平面及孔或配导管。
  (3)垫片部分渗漏应将垫片换用浸演的衬垫纸板。
  (4)油封处漏油应采取更新油封、更新轴承、修磨轴径的方法或更新壳体的方法来解决。
  (5)方向机破裂渗漏的情况有条件者可以修补,无条件者应更换配件。

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