It is a set of speed change device used to coordinate the rotational speed and the actual driving speed, which can expand the range of rotational speed and torque, thus making full use of the efficiency interval. Under this demand, the larger the speed range, the better the power and performance. However, simply increasing the speed range will increase the gear ratio gap of each gear, which is not only not conducive to power connection, but also will increase the sense of frustration when shifting gears, and multi-gear has also emerged.
Today, with more than seven gears, AT, DCT and CVT are in full bloom. But in the early years, many car companies chose in unison. So, which companies designed and manufactured these? What’s the difference between them?
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Representative models: cash,, the previous generation.
Although they are competitors, they are close. Both the new generation 9AT/10AT and the previous generation are jointly developed by the two companies. Among them, the grades of the previous generation were 6F35 series, 6F50 series and 6F55 series according to the transmitted power.
This can’t take care of both the quick shift response and the logic is very clear. In cash, its response is relatively rapid, especially in sports mode, and its response is more sensitive, but it will feel a slight setback when switching from first gear to second gear; But on the previous generation, this model performed very smoothly, but when stepping on the accelerator deeply, the reaction was a little hesitant.
Representative models: Angkor Sela, CX-4,
Although it is not the first group of Japanese car companies, it is really one of the best experiences in 500 thousand. This model is jointly developed by Aisin and produced by. Having said that, as well as the redesign of the locking mechanism, the control part is also calibrated separately, and the gear ratio, control unit and layout of the two are completely different. Only the CAN bus still retains the shadow of Aisin, so it can be said that these two models are different.
Many consumers who have driven Angkor Serra or other cars have said that these two models have a great driving experience. It not only responds quickly, but also seems to be quite excellent. Because all gears are locked, this model has high transmission efficiency, which is also a lower level in its class.
Ai Xin Jing Ji
Representative models:,, 5008,,, AX7, previous generation, cash RVA4, MINI COOPER.
Aisin believes that everyone is familiar with it. It is carried in many 100,000-200,000 domestic models and some joint venture models. This model can be recognized by so many enterprises because it has relatively low cost and first-class reliability.
After a few domestic brands with weak strength use this model, there will be a phenomenon of shifting gears in low gear; On most domestic cars, the performance of this Aisin is mainly smooth, and the response speed of downshifting is slightly slow; In the pursuit of maneuverability of small steel guns (such as MINI COOPER), its response speed is faster, but it will also sacrifice more.
I
Representative model: the previous model
Maybe everyone knows less about I. This is a company from Australia, focusing on and. It had a glorious history, but with the company’s production reduction in Australia and the company’s bankruptcy, I’s output plummeted by more than half and entered bankruptcy proceedings, and was subsequently acquired.
For the first time, it was produced with I. In fact, it was remarkable at that time, but the speed of downshifting was a bit urgent, and its transmission efficiency was less than 80%, so many consumers reflected higher performance than their peers. However, this model is mature in technology and technology, so its reliability is good, and its service life is as long as 250000km.
Paiwotai
Representative models:, cash,,
Paiwotai is a specialized subsidiary of Korea Group, and its technology is more advanced than I. At present, most of the models on the market are made by Pawotai, and many models in China are from Pawotai.
The mid-term change has been replaced with a brand new one. This model continues the old model, although it will not make the dynamic performance of the vehicle more radical, but it has also been reduced a lot due to the improvement of transmission efficiency. The 1.8T automatic transmission of the old model was about 10.5L, while the current model was reduced to 9.6L.
Dongan automobile power generation
Representative models:
Strictly speaking, there is only one enterprise that can produce in China, and it is Dongan Automobile Development (affiliated to Changan Group). The comprehensive performance developed by Dongan is almost the same as that of Aisin, and of course the price is similar. It is worth mentioning that Dongan’s is provided by SACHS, and the latter also provides supporting facilities for ZF.
Although Dong ‘an has good performance, its annual production capacity is only 200,000, so it can’t provide supporting facilities for CS55, CS75, and other models with huge sales volume. Therefore, at present, it is only carried on CS75 trial cars and other niche models. On the body, the biggest feature of this model is smoothness, and the shift logic also belongs to the excellent level of 100,000 domestic products.