Of course, the manual transmission can also be converted into a push-button transmission, but this will greatly increase the cost. When the economic advantage of manual transmission is lost, its significance disappears. It is not only as simple as AMT, but also needs a shift system to convert a manual gear into a push-button gear shifter.
Because the key shift, like the key shift and the drum shift, is an electronic shift in the standard sense, the button shift, the button shift and the drum shift used by BMW are all electronic shift mechanisms, eliminating the hard connection between the gear lever and the gearbox.
The contact with the gearbox still exists in the manual shift lever automatic gearbox, and the shift signal (mode conversion) will be completely transmitted to the gearbox electronically by ECU. Therefore, compared with AMT semi-automatic transmission, manual gear needs another set of button shift system.
The structure of this gearbox is still a manual gearbox, which is equivalent to adding an intelligent robot instead of manual gear shifting. However, the logic and thinking of robots are incomparable to human beings. The old driver's manual shift is more stable and fuel-efficient, so the shift logic of AMT gearbox is much worse, and it can't cooperate with the fuel cut.
According to the current situation of vehicles, it is difficult to perform perfectly. So this kind of gearbox has power interruption and irregularity. This is because the engine power is disengaged after the manual clutch is disengaged, and the vehicle speed will change during this time. Old drivers will accelerate the car, turn off the throttle and step on the clutch before shifting gears, so that the speed will not be reduced and the power will not be interrupted.
There is a feeling of dissatisfaction when the accelerator accelerates. The reason why some people like manual transmission is because it has the mechanical sense of gear selection and shifting, and it has the so-called driving pleasure of hand-foot cooperation! Second, its transmission efficiency is extremely high, but its structure is the simplest and most reliable, with the longest service life and the lowest maintenance cost.
Many advantages have not been rejected! Although the structure of AMT is simple, the current software adjustment level is still much lower than other automatic gears, so it is frustrating to drive, and the sound of shifting impact is also loud, and there is a strong sense of power loss when shifting! What is the importance of automatic cars today?
Everyone has to find a way. The reason why manual transmission is favored by a small number of car owners is because the price of manual transmission models is very low. The family car of 654.38+ 10,000 class has the same configuration. The price of manual transmission is at least 654.38+10,000 yuan cheaper than that of automatic transmission, and the control module of manual transmission power system is simple.
There is no need for power system matching and adjustment, the number of electronic control units is greatly reduced, and the stability and durability of the vehicle are also greatly improved. As the name implies, changing the button is like turning on the automatic gear, and the manual gear is not a button switch, which makes sense. The handle of the manual gear can move without electricity, corresponding to the pure physical and mechanical structure behind it.
To make a button, there must be a control system behind it, and the control system can manipulate the physical mechanism. The cost of manufacturing it can be similar to that of automatic transmission, key shifting can improve the sense of grade in the car, and second, electronic shifting saves more space than mechanical shifting handle, which can improve the utilization level of space in the car.
For example, more and more wireless charging locations are located in the pre-shift area. Therefore, if the manual transmission is converted into a push-button transmission, it is bound to increase mechanical parts, which not only does not meet the requirements of increasing the interior space, but also causes technical difficulties in actual operation. Even if the manual gear adds the button shift function, it will not change qualitatively, and it is just another control button of AMT gearbox.