有些车友在行驶过程中会感觉到,有时车子的刹车突然变得很软,踩刹车踏板后有一段时间才会反馈出制动力,这样在紧急状况时可能会造成交通事故。那么,是什么原因造成车辆刹车偏软呢?
可能引起车辆刹车偏软的原因:
1、刹车油管有空气
刹车油是刹车系统传递的介质,如果油管有空气,高压下的刹车油就会显得力量不足,尽管还有制动力但制动力明显减弱,此时应当及时到维修店进行制动系统排气处理。
判定刹车油管是否进气的方法是,在熄火状态下多踩几下刹车踏板至刹车变硬,然后踩住刹车踏板不放,如果一直保持硬的状态说明正常,如果踏板缓慢下沉,说明刹车系统有空气了。
2、刹车油长期未更换
刹车油有较强的亲水性,很容易吸收空气中的水分,如果不及时更换,其内部将会含有过多的杂种和水分,这样将影响制动力的传输。因此,刹车油一定要定期更换,有条件的话可以在维修店进行刹车油的水分含量测试。
3、漏油或刹车材质过软
一般情况下刹车总泵或刹车油管漏油将会造成车辆的刹车变软,而如果刹车的材质过软,高温稳定性就会变差,这样同样会造成车辆的刹车变软。
-途虎养车-
刹车问答精选
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@133****6430
Q:刹车盘生锈了,会影响刹车的性能吗?
A:刹车盘生锈是一个更正常的现象,因为刹车盘都是铸铁材质的,铸铁材质一个特性就是容易生锈,只要空气中含水率高,或者接触一点水就会生锈,刹车盘生锈对刹车性能没有影响。
@158****4351
Q:刹车掉黑粉是什么问题?
A:刹车产生黑色粉末说明刹车片的材质松散,材质松散说明片子的硬度不高,也就是常说的软片,但是软片不伤刹车盘,不过前提是刹车不打滑,如果产生的物质让你刹车打滑那还是很危险的。如果刹车平稳无噪音,那你这个掉粉的刹车片是高质量的。
@188****0973
Q:刹车踩不动是怎么回事?
A:可能需要检查真空助力器,如果发现踏板沉重,应做真空助力器的空气密封试验,其方法是:
方法一、起动发动机运转1-2min后熄火,用通常刹车时所用的力将刹车踏板踩动数次,如第一次踩下的行程较大,而其后行程逐次缩小,则表明真空助力器工作良好,如各次行程无变化,则表明真空助力器或真空管路漏气,应进行修复。
方法二、在发动机未运转时,用通常刹车时所用的力将刹车踏板踩动数次,确认踏板行程无变化,然后将刹车踏板保持在踩下的位置,并起动发动机,如果此时踏板高度稍微下降,则表明真空助力器工作良好。
方法三、在发动机运转时踩下刹车踏板,然后使发动机熄火并保持踏板在踩下位置,约30秒后,如果踏板高度无变化,则密封良好。如果踏板有回升现象,则表明真空助力器有故障。
@137****4561
Q:刹车油一般多久换?
A:刹车油一般是2年4W公里左右更换一次。
这个也不是绝对的,需要根据车辆的使用情况而定,刹车油有一定的腐蚀性,吸水性也比较强,所以可以使用专用的刹车油检测仪检查下刹车油中的含水量。看下是否需要更换,还可以看下刹车油的颜色,如果颜色发黑也差不多需要更换了。
@183****6938
Q:刹车片多久需要更换?
A:刹车片的更换时间周期不是固定的,这取决于车辆行驶路况、驾驶员踩刹车踏板的频率及力度,一般来说全新的刹车片厚度在1.5cm左右,随着日常摩擦损耗下,当肉眼观察刹车片厚度仅为全新的1/3时,就需要增加检查的频率,随时准备换上新的刹车片,刹车片基本都装有报警片或者感应线,当刹车片跟它平齐时,就说明已经到极限了,必须换新。
原创文章,作者:cesifu,如若转载,请注明出处:http://www.cesifu.com/article/1995.html
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