The driving school car does not step on the accelerator, only loose clutch can climb the hill, why can't the family car do it? This is the experience of many people after learning to drive. In fact, family cars can achieve "climbing hills without stepping on the accelerator and only loosening the clutch", even better than the performance of the driving school car.
But in reality, there are many people who feel this way: it is indeed easier to drive a school car without stepping on the accelerator and only lifting the clutch uphill! I just want to say that your feelings are correct, there is indeed such a phenomenon, and the reason is very simple, but many people have not thought of it.
1. The condition of the vehicle itself
If you compare the old Poussin from the driving school, it will indeed be easier to go uphill. I remember that when I first took the driver's license, the coach car was an old Poussin with a carburetor engine, which belonged to the old breed. Compared with the current EFI engine, the carburetor engine has a unique secret, that is, the idle speed can be adjusted, and there is an idle adjustment screw on the carburetor, and it can be adjusted by directly screwing it. Turning the idle speed up a little bit will increase the power slightly.
Therefore, many people feel that the idling speed of the driving school car has been artificially increased, so it can go uphill without stepping on the accelerator. And the actual situation may not be so, at least I have seen the driving school carburetor engine will not take the initiative to adjust the idle speed, the reason is very simple: the idle speed is high, the cost of oil, the coach car almost all day long does not turn off, a driving school dozens of cars, after the idle speed is adjusted to burn a lot of oil a day, when a student tuition is only one thousand two, the driving school will certainly not be so luxurious. Therefore, the statement that the driving school vehicle has increased the idle speed is not actually the main reason.
The reason why the old Poussin did not step on the accelerator uphill has a high success rate, I think it is related to the engine and the gearbox. The old Poussin engine is relatively old, the liter power is not large, but the low speed torque is more sufficient. In addition, the first gear reduction ratio and the main reduction ratio of the old Poussin gearbox are larger than those of today's manual transmission cars, and the first gear has more magnification of the engine torque, so the power feeling will be better under the same conditions. In addition, the wheels of the old Poussin are also smaller than many family cars today, remember that the Poussin tires of the original driving school were 185/70R13, and the wheel diameter was 58 cm. Today, the new Santana tire model is 185/60R15, the tire diameter is 63 cm, and the smaller the wheel with the same half-shaft torque, the greater the drive force. So I think these factors make it harder for Poussin to turn off the fire when climbing.
2. Psychological factors
Practicing at driving school and driving normally on social roads are two completely different states, and for beginners, the difference between this state is enough to affect their own level of play.
The pressure is relatively small when practicing driving school, because you don't have to be afraid of electronic eyes, you don't have to be afraid of other vehicles, and you can open up. And at the beginning of the exercise, you can completely slow down a little bit to experience and grope, so that the probability of turning off the fire will be reduced. But driving on the social road needs you to worry about more, especially when you start, you are slow, most of the time the heart is nervous, in the traffic light intersection to start at the back of the car to honk the horn many people are confused, even if others do not honk the horn yourself are also panicked, in this state to start to turn off the fire is not surprising.
In addition, if you always start to turn off the ignition when practicing at the driving school, the coach will definitely reprimand you a few words, so many people are always extra careful when practicing, plus you have plenty of time to manipulate the clutch semi-linkage, so it is easy to start.
In fact, the current family car can be much better than the previous old car, especially the engine is replaced by electronic injection, there is a special engine computer in control, even if you do not step on the accelerator when you start, the computer detects that the engine speed is too low when it will help you make up the oil to improve the power, so today's family cars in all aspects are not worse than the previous old car, the reason why everyone feels that the driving school car is better controlled that is mainly the impact of very few factors.