火花塞积炭多是什么原因?

2024-11-30 01:26:14
推荐回答(3个)
回答1:

  引起火花塞积炭的原因主要有以下几点:
  (1) 燃油混合气浓度调整不当,混合气过浓,气缸内燃料燃烧不完全。
  (2) 气缸、活塞、活塞环磨损严重,润滑油过多,机油窜入燃烧室燃烧。
  (3) 点火提前角过大或过小。
  (4) 发动机连续低转速、小负荷运行。
  (5) 火花塞选型不当。对转速较低,压缩比较小,工作温度较低的发动机,应选用热型火花塞,如果错用冷型火花塞,则容易产生积碳和油污。一般来说,用户不要随便改动《使用说明书》上规定的火花塞型号。
  (6) 汽油的辛烷值太低。
  火花塞积炭清除方法
  一个清除火花塞积炭的方法:火花塞积炭后,可以放在汽油、煤油或者丙酮中浸泡,先用竹片清除燃烧室、中央电极与绝缘体上的积碳层,再用铜丝刷或软铜丝刷刷除。不要用火去烧,防止火花塞因局部温度骤增而使绝缘体和密封遭到破坏。
  火花塞积炭应急
  如果在行车途中因火花塞积炭造成工作状态不良,可以采取“吊火”的办法应急,就是把高压分线从火花塞上拆下,用铁丝或者内胎皮固定高压分火线,使线头与火花塞接线柱之间保持3-4mm的距离即可

回答2:

1、发动机长期怠速运转。发动机怠速运转时,混合气较浓且燃烧不完全,同时发动机又不能有效地利用排气惯性进行排气,致使气缸中残余废气增多,并大量地积存在火花塞上,造成火花塞积碳过多。
2、活塞与气缸壁之间磨损过度。当活塞与气缸之间磨损过度时,不但会造成气缸压缩不良,同时也会造成曲轴箱润滑油上窜。在这种情况下,不仅会由于发动机压缩不良使气缸燃烧热值降低,造成火花塞不能自洁;同时,还使从曲轴箱窜上来的润滑油不能充分地参加燃烧,也沉积在火花塞上,形成积碳。
3、气门油封损坏。当发动机的气门油封损坏时,会导致润滑油窜入气缸。由于气门油封损坏使润滑油窜入气缸时,不但浪费润滑油,还会因为润滑油挥发性较差、燃烧不完全以及润滑油中含有大量的胶质而加速火花塞积垢。火花塞严重积碳和油污时,在清除后通常可继续使用,但效果和寿命有所下降。

回答3:

买车用车,养车修车,多听陈工聊车

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