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The dual-clutch transmission has become a kind of ethos. It is said that it combines the efficiency of the traditional transmission with the convenience of the automatic transmission. The vehicle scraper temporarily does not mention complaints from the manufacturers such as the Volkswagen Group. It first answers a problem that is inherently insurmountable. .
Consultant: Miss Song 35
Question: My car is a 1.4T Cruze. I usually fly a small number of children. I went to a nearby parking lot a few days ago. As a result, the parking space is full. No card! I just wanted to pour out the car, but the whole process was scared of cold sweat. As long as the oil was loose, the car would slide straight ahead. It would be easy to pour some distance, and slightly loose the throttle back to the original place, thinking that my car Bad, go to 4S shop, they actually say nothing, what methods do I have to defend it?
our suggestion
4S shop is right, so it is impossible to defend rights, this is a congenital problem of dual clutch transmission, encountered this situation can only be used with a handbrake, the old Cruze is a mechanical handbrake, control it easier, to prevent the car Only ask the parking brake for help.
Why is it a congenital problem?
Congenital problems mainly come from the structure, some manufacturers call the DSG, some call DCG, but they are inseparable from the structure of the two clutches working with each other. This clutch is almost the same as our school car, but now it is controlled by the computer and solved. The difficulty of operation cannot solve the semi-linkage problem. According to the principle of double-clutching, there is no such thing as a semi-linkage, only the concept of combining and separating, so when the program determines that it is separated, it will happen.
When Ms. Song released the throttle, it was estimated that the program would let the clutch release and there would be no power and gravity. Of course, some transmissions have a slightly better procedure. For example, after releasing the throttle, there is still a 1-2 second engagement time. Even if the throttle is released, the torque of the engine can make the car stop or slow down without immediately slipping. car.
What can be solved?
Now the cars are popular configuration electronic handbrake, but the demolition of the king that the electronic handbrake and dual clutch transmission is not a good couple, but the mechanical handbrake is more like an old couple, because the moment from pressing the electronic handbrake with the actual release is not At the same time, the reaction with people is not so tacit, and the mechanical ones are more intuitive. It can be recalled that the semi-ramp at the time of the test car starts. If the mechanical hand brake is changed to the electronic type, the pass rate estimate will be greatly reduced.
However, there are currently some electronic hand brakes that have this function. Even if they are in the locked state, they will be automatically released as long as the throttle is applied. Therefore, the electronic handbrake is a good assistant no matter whether it is starting from a half-hill or half-reverse, but the lock time is Control is good, otherwise it will also slip, as for the mechanical handbrake, then when reviewing the test car half-slope starting process, it will be easier to operate. The models with the AUTO HOLD function are not discussed here.
Are all double clutches inevitable?
The traditional automatic transmission does not suffer from Miss Song's problem because it has something called a torque converter. The current market is that 99% of dual-clutch transmissions do not have this part. Why? It is the efficiency problem mentioned at the beginning of the article, but in addition to Honda, the current dual-clutch automatic transmission used in the 2.4L displacement model of SI Platinum Core is a hydraulic torque converter. In fact, adding it can solve the inherent problems of many common dual-clutch transmissions, such as rolling cars, shift shocks, heat dissipation. The strange thing is that Honda is only using this transmission on Sibo Rui, and the vast majority of other Honda models still use CVT. As to why the lack of popularity, may be the cost reason, perhaps the effect is not obvious, perhaps ... anyway, scrap car do not know. (Finish)
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