活塞环的三隙是什么?

2025年03月13日 23:16
有5个网友回答
网友(1):

端隙、侧隙、背隙,专业人士用到,一般人不要管了

网友(2):

端隙 背隙 侧隙

网友(3):

维修视界:电喷摩托车原理及其维修74讲之活塞环的三个间隙

网友(4):

活塞环安装时有三个间隙要测量,简称活塞环的三隙,一是开口(环口)间隙,二是轴向间隙(侧隙),三是径向间隙(背隙),也称端隙、侧隙、背隙。下面我们来介绍一下活塞环三隙的测量方法:
端隙的测量
端隙即活塞环装到气缸内后,在开口处呈现的间隙,以防活塞环受热膨胀后卡死。检查活塞环端隙时,将活塞环平正地放入气缸内,用活塞顶部把它推平,然后用厚薄规测量开口处的间隙,一般为0.250.50mm。第一道环因工作温度高,故其端隙比其余几道环大。
侧隙的测量
侧隙指活塞环在环槽内的上下间隙。侧隙过大会影响活塞的密封作用,侧隙过小活塞环会卡死在环槽内。测量时,将活塞环放入环槽内,用厚薄规测量,第一道环因工作温度高,取值一般为 0.040.10mm ,其他气环一般为0.030.07mm ,普通油环的侧隙较小,一般为0.0250.07mm ,组合式油环没有侧隙。
背隙的测量
背隙是指活塞装入气缸后活塞环背面与活塞环槽底之间的间隙,一般用槽深与环厚之差来表示,一般为0.300.40mm,普通油环的背隙比较大,一般经验作法是将活塞环装入环槽内,如低于环岸,能转动自如又无涩滞感觉为适宜。

网友(5):

活塞环的三隙指开口(环口) 间隙、轴向间隙(侧隙) 、径向间隙(背隙) 。
开口间隙是活塞环安装时必须的开口;侧间隙是活塞环配置在环槽内上下面的间隙
这个间隙防止或在环卡死在环槽内;背间隙是活塞环在工作时靠燃烧时的高压气体进入背间隙对活塞环产生压力,来加强活塞环与气缸工作面的密封作用。

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