手动挡的车加油门转速上去速度不上去,什么原因?

2025-02-18 07:56:53
推荐回答(2个)
回答1:

如果是手动挡估计是离合器打滑了,如果是自动挡那就是变速箱问题。发动机不要过高转速空转容易损坏发动机。
具体上说,

1.发动机输出的功率也是时间和转速的函数(参见工况图)也需要个积分过程(t)

2.发动机的输出功率转首先到输出到变速箱进行力矩转化,当然也需要个转化过程,在此过程中为防止猛烈输出扭矩对后面驱动系统(机械)的冲击,在输出设计逻辑上一般都有个缓冲系统(AT,CVT,DC,CL)减缓瞬间扭矩冲击。

3.不同车系对扭矩输出控制逻辑不同,或快或慢,行成不同风格车系(加上底盘悬挂等调整)(运动型,舒适性等)
手动挡车有驾驶乐趣,大多表现在可以人为随意控制挡位,能通过离合和油门的配合,保持在某个挡位,可以低挡位高转速要求车动力足,也可以高挡位低转速要求车省油。开手动挡车有三项基本技术,只要掌握熟练了,就能把手动挡车开好。

1.能熟练控制离合器,知道什么时候该踩离合什么时候该松离合,并且要掌握半联动技巧。大多数时候只有在换挡的时候才需要踩离合,行驶中需要减速也有可能要踩离合,特别是当车速比较慢的时候,因为随时都可能需要换挡。一般来说,行驶中只是点一下刹车,无需踩离合,若是刹车踩住保持两三秒钟以上了,都要准备踩离合降挡了。接下来是半离合技巧,这项技术比较重要,在起步的时候,堵车向前蠕动的时候,都需要用到半离合,控制好了能够使车辆平稳起步无顿挫。

2.知道换挡时机。换挡时机都是以车辆动力为参考的,只要保证挂入高挡位后车依然有比较强的动力就可以。因此在平路、上坡和下坡换挡时的发动机转速和车速都是不同的。以平路为例,发动机转速1700转-2500转就可以换挡,动力十足。如果是上坡,应当适当推迟换挡,下坡应当适当提前换挡。很多老司机习惯空挡滑行,换挡都是看车速,因为没法看发动机转速。看车速换挡一般到15-20码挂2挡,30-35码以上挂3挡,45-50码挂4挡,60码挂5挡。

3.想成为老司机还有一点要求,能够大约感受出发动机的转速和车辆速度,换挡时不能每次都看一下仪表。升挡时看仪表还可以,一般升挡的时间比较充裕,重点是减挡。当持续踩刹车,车速降低到一定值后需要越级降挡。如果你要看一下仪表,还要再考虑一下该挂几挡,比如从60一直减到30了,还要考虑一下该挂2挡还是3挡?那就很耽误时间了,甚至有时遇到紧急情况会躲不过。老司机应该能判断出此时的车速,根据当时的动力需求,知道大约该挂入几挡,无需考虑。

4.因为挂挡的灵活性,要学会充分利用发动机制动和降挡超车。发动机制动用在长下坡路段,以前的文章讲过很多次了,具体细节可以查看历史文章。降挡超车很多人都不用,不会用或者懒得换挡。比如你在国道上行驶,此时车速是60km/h,挡位是5挡,想超越一辆很长的大货车。超车前把挡位降低到4挡,再加油门超车,比直接在5挡加油门超车要快很多。因为挡位低扭矩大,发动机的转速可以迅速提高,瞬间爆发力强,超车更有劲,速度更快。在5挡因为传动比的缘故,发动机转速提升的很慢,超车自然就慢。以上4点都能够掌握,开手动挡车的技术一定不会差。

回答2:

这是离合器打滑了,最好好紧换,要不然晚了会把压盘也磨坏的。离合器打滑在一些时间长的手动挡车上容易出现。

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