为什么了解限制档之前要弄清楚车辆的换档时机呢?这是因为,在正常行驶中限制档就是用来当车辆的速度和发动机转速在换档区间中不断上下徘徊时用于对自动变速箱进行换档控制的~我认为这是对一般行驶中限制档作用的最准确的解释(本解释绝对系本人原创^_^)原来看过很多介绍自动档的文章,里面几乎都有这句话:“当车速低于60时,应该选择比D低一个档位来行驶…”其实这个提法是不很准确的。上面我说了,在正常行驶中限制档其实只在车子正巧处在换档区间中徘徊的时候才有效果。例如,车辆如果稳定行驶40码,这时档位应该是3档(按照提前进档,3档的行驶速度区间为30km~50km),在这个情况下选用D档或者D3档根本就没有区别,变速箱会一直稳定在3档上面,根本不会造成跳档。或者更慢,车辆以10km时速稳定行驶,这时你用D档或者用1档也是没有区别的,变速箱的档位就是1档,也不会有档位升降的变化。那什么时候该用限制档呢?限制档应该在交通状况时快时慢,不能稳定以一个速度前行的情况下使用。例如,车速一直在40~50左右之间晃动,这时变速箱很可能一会在3档上面一会在4档上面,或者上下跳动。这个过程就会造成变速箱的加速磨损和积炭的产生,这时就该选用限制档D3来控制跳档的产生,使变速箱稳定在3档上,而不往4档上跳动。同样的情况也会出现在1~2档,2~3档的换档区间里,例如堵车时,车子慢慢挪动,可能速度瞬间可以达到20,但马上又要停下来,这个过程中变速箱就经过了,1档升上2档,然后马上又要跳回1档的过程
Why should understand the limit file before time to figure out the vehicle's shift? This is because, in the normal driving limit file is used when the vehicle speed and engine speed constantly wandering up and down in the shift range is used for the automatic transmission shift control ~ I think this is for the average limit file role in driving the most accurate explanation (in this explanation absolute is my original ^_^) originally have seen a lot of articles introduce automatic transmission, almost all is this sentence: "when the speed falls below 60, should choose to lower than D a driving gear to..." Actually this idea is not very accurate. I said above, limit in the normal driving gear is only in the car happened to wander in shifting interval when have the effect. ? 40 vehicles, for example, if the driving stability