开车是一个花钱的事儿,特别是现在4s各种汽车相关产业数量不断增多,更是加大了开车的投入。单是选择自动挡还是手动挡这两者就是很让车主为难的了,毕竟两者各有所长,很多老司机都是偏爱手动挡的驾驶体验,手动挡可以最大的体现出驾驶员的技术的好坏,然而自动挡就是很多新手车主偏爱的了,这是因为自动挡车型对于车主来说是非常友好的,然而自动挡的车在驾驶的时候仍然是需要注意很多事项的,这样才能避免对汽车的损伤。开自动挡汽车“给油就走”?老司机:不注意这些细节,很伤车!
一、自动挡汽车别猛踩加速踏板
虽然自动挡车操作较为简单,但也要遵循一些规则。首先,在启动发动机前要拉好驻车制动器,将变速杆放在P位或N位上,踏下制动踏板才能启动发动机,否则是打不着车的。
在怠速状态下,把变速杆从P位移动到D位上,然后松开驻车制动器和制动踏板,缓慢起步,最后再踏下加速踏板进行加速。
行驶中,如果非紧急超车等情况,尽量不要将加速踏板迅速踩到底,因为这样做自动变速器会进行“强制降挡”,即自动变速器立即强制换入低速挡,容易使发动机转速过高,造成自动变速器中摩擦片磨损加刷和自动变速器润滑油油温过高。
更为重要的是,虽然发动机转速较高,但由于自动挡的动力传递方式不同于手动挡,相比于手动挡车,自动挡车对加速踏板的加速反应有“迟滞”现象,它不会马上就向前蹿去,而且越是猛踩加速踏板,这个退滞现象越明显。因此,驾驶自动挡更需要柔和操作,猛踩加速踏板不仅不会得到猛加速的效果,反而会增加燃油消耗。
二、自动挡汽车千万别空滑行
对于装有自动变速器的汽车,千万不可使用N位滑行。
如果驾驶人在行驶状态时(如D位),立即换入N位,这时变速器由工作状态变为停止状态,齿轮组停止转动,机油泵停止供润滑油。因为自动变速器内的润滑是由发动机带动的机油泵泵油润滑的,当车速很高、发动机转速很低的时候,变速器内齿轮的润滑就不够,温度不断升高,不仅会影响其使用寿命,而且还会造成高速旋转的齿轮因得不到充分润滑而烧蚀,从而损坏自动变速器。
三、自动挡汽车挂倒挡一定要在停稳后
驾驶手动挡汽车时,如果想挂倒挡,不必等车停稳后即可先挂倒挡,然后直接抬离合器踏板就可让汽车倒行。然而,驾驶自动挡车时却不可这样,自动挡车在需要倒车时,一定要在汽车完全停稳后再将变速杄移至R位,否则会损坏自动变速器中的换挡执行元件或停车锁止机构。
如果是在平坦的路面上倒车,松开制动踏板和驻车制动器后,以发动机的怠速缓慢倒车即可,无须踩加速踏板。如果倒车时要越过台阶或其他障碍物,应缓慢踩加速踏板,并在越过障碍物后及时制动。
四、自动挡汽车的三种危险操作
驾驶自动挡车虽然方便,但也不能随心所欲,也要注意方式方法,弄不好也会损坏车辆或出现意外。
(1)空挡滑行。
这样做不仅不省油,而且很容易易损坏自动变速器,因为这时自动变速器处于无润滑油的状态,很容易烧坏报废。
(2)停车等绿灯时不踩制动踏板。
等绿灯时若挡位在D位或N位上,如果忘记踩制动踏板或拉驻车制动器,很容易造成追尾前车或溜车。
(3)鲁莽拖车。
自动变速汽车出现故障需要送往维修厂维修时,拖车操作最好将驱动轮抬起再拖动,否则会损坏变速器。如果做不到则一定要注意拖车的速度不应太快,不应超过5千米小时,而且拖车的距离也不宜太长,最好在20千米以内。
原创文章,作者:cesifu,如若转载,请注明出处:http://www.cesifu.com/article/55129.html
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