The most popular on the road today is the automatic car, although the automatic car is more convenient and simple, but still need our owners to develop good driving habits, otherwise the car can often go to the car repair master to suffer. Once my friend and I were in a car repair shop discussing which gear, Whether to hang up D gear or N gear when waiting for the red light, which gear is better. So I asked the master who repaired the car for advice.
The most common automatic models in daily life are AT, CVT and dual-clutch transmissions, and most car owners will hang up D gear when waiting for traffic lights. The master said that the AT transmission is notoriously durable, and when the D gear brake is hung, the engine is also running, and its power will continue to be transmitted to the wheels.
If you are a little more detailed: the engine drives the pump wheel rotation, that is, the transmission oil rolls, so as to further drive the rotation of the turbine At this time, if the locking clutch is in the locked state, then the power will be transmitted to the gearbox, and finally the power will be transmitted to the wheel normally.
If the wheel is in a state of forced stationary at this time, it means that the turbine in the torque converter is also forced to stand still, and the resistance of the pump wheel rotation at this time is constantly increasing, and the system at this time has to consume a large amount of fuel injection to offset this resistance in order to maintain idle speed, and with the accumulation of a long time, our own car will tremble. So hanging up red lights such as D gear is really not worth it.
CVT gearbox and AT gearbox is very similar, but the difference is that the transmission mechanism becomes a steel belt and a cone wheel, and when we hang the D gear when we have a red light, the steel belt and the cone wheel will be in a larger transmission ratio position, the clutch is also in a closed state at this time, the wheel static engine has been running, and in the end there will be the same situation as the AT gearbox, which is also not good for our own car.
However, the dual-clutch transmission is different from CVT and AT, when we hang the red light such as D gear, it is very similar to hanging neutral gear, so it will not produce additional fuel consumption, but one of the points is that the force of the brake is very high, a little loose, slightly reduced the force, the clutch will be combined with it, it is good in a short time, but if it is often like this, for a long time, it will weaken the life of the clutch plate to varying degrees because of friction and heat, and eventually the clutch piece will burn out.
Seeing this, is it as sudden as the editor, and sure enough, my friend said that hanging the D file can be undesirable. In our daily life, we must pay attention to caring for our own car, and it is true that hanging N gear when waiting for the red light is the most scientific, and all car owners and friends must also pay attention to scientific driving Oh, for the sake of our families and cars. Of course, some gearboxes will also be in neutral gear when hanging in D gear. The master finally said provocatively: "Give me your friend's contact information, or introduce him to our car repair shop, we will give him a discount on car repair, welcome at any time!" Hahahahaha"
So which gear do you like to hang when you are waiting for a red light? Is it a safe N or a changeable D? Is it the most "safe" P-file? Welcome to discuss.