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宝马汽车维修活塞环异响的原因

来源:http://www.jnrunao.com/ 日期:2021-09-02 发布人:runao
宝马车一直是深受广大车主喜爱的一款豪车,但是偶尔还会出现些小问题。例如经常会有车主说自己的宝马车活塞环有异响,这样不仅会对车子有影响,而且会影响车主的注意力,那么宝马汽车维修过程中活塞环异响的原因是什么呢?
BMW has always been a luxury car loved by the majority of car owners, but there will be some small problems occasionally. For example, some car owners often say that the piston ring of their BMW has abnormal noise, which will not only affect the car, but also affect the owner's attention. What is the reason for the abnormal noise of the piston ring during the maintenance of BMW?
(1)塞环的金属敲击声
(1) Metal knocking sound of plug ring
a、当活塞环折断,或者活塞环与活塞环槽间隙过大时会引起一定的敲击声。
a. When the piston ring is broken or the gap between the piston ring and the piston ring groove is too large, it will cause a certain knocking sound.
b、气缸上部磨损后,活塞环与气缸上接触不到的地方几乎没有磨损形成台阶,如修理不当使活塞环与气缸台阶相碰会发出一种纯哑的“噗、噗”的金属碰击声,随着转速的升高,声响也随之增大。
b. After the upper part of the cylinder is worn, there is almost no wear where the piston ring cannot contact the cylinder to form a step. If the piston ring collides with the cylinder step due to improper repair, a pure dumb "poof, poof" metal impact sound will be issued. With the increase of rotating speed, the sound will also increase.
(2)活塞环漏气声响
(2) Piston ring air leakage sound
a、原因与特征:活塞环弹力减弱使活塞环与气缸壁密封不严、活塞环的开口间隙过大或开口重叠、气缸壁划伤有沟槽等,都会造成活塞环漏气。会出现一种空洞的“喝、喝”或“吱、吱”声响,严重时有较明显的“噗、噗”的声响。
a. Causes and features: the piston ring air leakage will be caused by the weakening of the elastic force of the piston ring, the lax sealing between the piston ring and the cylinder wall, the excessive opening gap or overlapping opening of the piston ring, the scratch and groove of the cylinder wall, etc. There will be an empty "drink, drink" or "squeak, squeak" sound, and in serious cases, there will be an obvious "poof, poof" sound.
b、故障检查的方法:向汽缸内注入一点点润滑油,若声音降低或消失,但不久有出现,即说明活塞环漏气
b. Fault inspection method: inject a little lubricating oil into the cylinder. If the sound decreases or disappears, but it occurs soon, it means that the piston ring leaks
(3)活塞环积碳过多的异响
(3) Abnormal sound of excessive carbon deposition on piston ring
a、声响的特征:积炭过多时的声响,是一种尖锐的“喋、喋”。
a. Characteristics of sound: the sound of excessive carbon deposition is a sharp "chatter, chatter".
声、发动机有时还不容易熄火停车。
Sometimes it is not easy to shut down the engine.
b、产生积炭的原因:其主要原因是活塞环与气缸壁密封不严,开口间隙大,活塞环装反,开口重叠,使润滑油窜入燃烧室引起,或者因汽油标号不符合要求,混合气过浓,空气滤清器过脏导致。
b. Causes of carbon deposition: the main reasons are that the piston ring and cylinder wall are not tightly sealed, the opening gap is large, the piston ring is installed reversely, and the openings overlap, so that the lubricating oil flows into the combustion chamber, or because the gasoline grade does not meet the requirements, the mixture is too rich, and the air filter is too dirty.
(4)单缸断火试验,声响减小,但不消失,把螺丝刀放在火花塞或喷油嘴上听察,如发出“啪、啪”声响可确定为活塞环折断。
(4) In the single cylinder fire cut-off test, the sound decreases but does not disappear. Put the screwdriver on the spark plug or fuel injection nozzle and listen. If there is a "snap, snap" sound, it can be determined that the piston ring is broken.
(5)同前听察,如发出“噗、噗”声响,且断火后无变化,可确定为活塞环碰撞气缸凸肩。
(5) The same as the previous listening observation. If there is a "poof, poof" sound and there is no change after the fire is cut off, it can be determined that the piston ring collides with the cylinder shoulder.
(6)发动机冷车起动时,发出“嘣、嘣”声响,在机油加注口处可见冒蓝烟,其频率与声频吻合,作断火试验时,声响消失,机油加注口处冒烟减少或消失,可确定为该缸活塞环漏气异响。
(6) When the engine starts cold, it makes a "bang, bang" sound. Blue smoke can be seen at the oil filler, and its frequency is consistent with the sound frequency. During the fire break test, the sound disappears, and the smoke at the oil filler decreases or disappears, which can be determined as the abnormal sound of air leakage of the piston ring of the cylinder.
(7)发动机温度升高,若仍有明显的窜气声响,再作断火试验,但机油加注口处仍有明显漏气现象,可确定为活塞环与缸壁密封不良。
(7) If the engine temperature rises and there is still obvious blow by sound, conduct the fire break test again, but there is still obvious air leakage at the oil filler, which can be determined as poor sealing between the piston ring and the cylinder wall.
以上就是小编整理的一些宝马车活塞环异响的原因,当车子出现问题的时候,我们的车主一定要及时更改。
The above is the reason why some BMW piston rings make abnormal noise. When the car has problems, our owners must change them in time.
此文关键词: 济南奥迪专修  

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