Cars that drive automatic gears can't always hang up to D gear, and many friends laugh when they hear this sentence. Driving an automatic car without hanging on to the D gear, how do we drive?
Except for these three cases, when going downhill, if you keep hanging on to the D gear because the speed is too fast, many drivers have to step on the brakes. As soon as you step on the brake, the brake pads on the brakes will overheat, which will speed up the wear of our brake pads at this time. Reducing the service life of the brake pads will also reduce the service life of the car's gearbox.
a Second case, that is, we do not hang up the D file while waiting for the traffic light.
Because when you wait for the traffic lights, you hang up the D gear and our car is still moving, but you are on the brakes. At this time, the engine of the car is also running at high speed. The two colliding forces have caused the car's fuel consumption to increase, and it has also caused the generation of carbon deposits. Over time, the service life of the engine will be greatly reduced, so we should not hang low gear when waiting for traffic lights.
The third is to hang D gear when going uphill, and everyone knows that we hang D gear when going uphill.
If the slope is too steep, our speed it has been uniform, its speed has not been raised, the power is like this, if you hang up the D gear again, the number of revolutions of the car even exceeds 4000,
The speed of the car will not increase much either. This situation is still hanging D gear, its power or say that no matter how you refuel, it can not be added.
So in these three cases we can't hang up the D gear