破解自动挡车节油之道

[疯狂的石头]

勤换“N”挡和“D”挡

　　一般来说，自动挡汽车比手动挡汽车油耗高这是不假，但同样的自动挡汽车，也会根据个人的驾驶习惯不同而产生不同的油耗，甚至有时这种差别还挺大。就一点来说，以前自己在长时间等红灯、堵车或者等人的时候怕麻烦，就踩住制动然后一直把挡位放在“D”挡上，需要启动的时候一踩油门就走了，其实这样做方便倒是方便了，但是却无谓地增加了油耗。现在，无论是什么情况下停车，如果等待的时间超过1分钟，就将挡位挂在“N”挡上，这样既能减少油耗又能避免变速箱油过热，从而保护变速箱。要是停车时间超过3分钟，就最好挂在“P”挡上，省油又环保。
汽车自重每增加5公斤就会多消耗1％的汽油\
保持标准胎压

 

[无敌士]

这样做容易DAMAGE变速箱的governor, when you are at high speed.一但governor被烧,你的车只能用一档,换不到高档位.仅共参考.

 

[BeYOndGoOd&EviL]

挂到“N”档上，发动机工作和挂在"D"上有区别吗？发动机烧gas，transmission不烧gas。省油的原理是什么？

 

[疯狂的石头]

N 发动机无负荷旋转

 

[DayInDayOUt]

最初由 无敌士 发布
这样做容易DAMAGE变速箱的governor, when you are at high speed.一但governor被烧,你的车只能用一档,换不到高档位.仅共参考.

I agree with you at switching gear (N/D) at high speed could make damage.
But qiaoqiaolei only switches the gear when engine is idle.
I believe it should be OK but I'd like to listen to your opnion as well.
So could you tell us if it's safe to flip gear in that case?

 

[无敌士]

I personally damaged my 94 nissan by putting the gear at "N" whenever I thought I have to stop. After a couple of months, I could not switch the gear to higher ones. It ended up I have to change the gear governor which costs me about 700 bulks.
We also fixed one customer's car in a similar situation.
What I guess is that when your car runs at for example 100km/h and you suddenly switch the gear from “D” to “N”. The regulator of governor may not be designed to work in that way. It may work for some time, but the damage maybe occur gradually. good luck.

 

[无敌士]

When the car stops I don't see any problem by putting the gear in "N". But it will be safter if you can put the gear in "P". Unless you always will not forget to use your parking brake or by braking your car by foot. If you have to idle your car for a while why don't you just turn off the engine? Waiting for a traffic light, you don't need to change the shift to "N". How long does it take for a traffic lights, one minute or two?

 

[DayInDayOUt]

Thanks for answering the question.
In fact, I have one more related question as well.
When we driving on a steep terrain, we can not slow down the vehicle by putting the break for a long period of time, otherwise the pad and disc may be burned out. In this particular case, we have to switch to lower gear (D/3/2/1) to slow down the vehicle.
I'm just wondering if it's the same situation as described before (D/N) that you want to prevent or if it's perfectly safe?

 

[无敌士]

Agreed and safer.