Among Japanese cars, which transmission is better, Honda CVT or Toyota CVT?Today we are going to discuss this issue. First of all, the CVT continuously variable transmission is extremely smooth, and there is no transmission that can compete with it in terms of power delivery. In terms of power transmission, the CVT has a better connection from the engine to the transmission, and the gear shifts are particularly smooth when controlled.
JATCO is the most closely related to Bosch, so the latest technologies from Bosch are often used first by JATCO. Honda can produce steel belts independently, but in the early days it was also licensed from Bosch. The most embarrassing problem facing Honda is its own lack of production capacity. There are not enough steel belts for the AT and CVT, so Bosch will still help Honda share some of the production.
Although the steel belts used by Honda do not represent the latest technology, the quality is higher than that of Nissan!Toyota's Aisin Corporation had a joint venture with Bosch to produce steel belts in the early days, which was of course based on Bosch's steel belt technology. Later, Aisin began to produce steel belts in-house (licensed by Bosch).
Now Aisin has also begun to design and develop steel belts with technology that is completely independent of Bosch;After all, there are only a few companies in the world that can develop steel belts and steel chains, such as Bosch, Schaeffler, Honda, Aisin, etc. However, compared to Toyota and Nissan, the gearbox developed by Honda is full of shortcomings. Simple!Toyota's CVT gearbox comes from Aisin.
Aisin is a long-established automatic transmission manufacturer and has also made many innovations in CVT transmissions. Toyota has never focused too much on handling and sportiness, but more on economy. Therefore, Toyota's CVT gearbox is mainly economical and durable. For example, the SCVT gearbox uses its coaxial double-row outlet oil pump technology.
This technology is designed to reduce the energy loss of the oil pump. The design of the dual oil outlets allows the gearbox to use different oil channels under different workloads, reducing the energy loss of the oil pump and achieving the purpose of saving fuel. It can reduce energy loss by up to 30%.
Subsequently, Toyota and Aisin collaborated to develop a directshift (CVT) transmission. This transmission is currently the most widely used new CVT transmission by Toyota, and it is also a transmission that Aisin does not sell to the outside world. It was first installed on the INAZA CHR, and almost all models are now equipped with this gearbox.
The innovation of the DirectShift-CVT is the innovative addition of two mechanical gears and the innovative addition of a starting gear. At present, there are several CVT manufacturers in China, the most representative of which is Chery's former transmission department, and now Wanliyang. Of course, domestic CVT manufacturers adopt reverse development and imitate JATCO. Cooperate with Bosch to develop core components.
Steel belts are also offered by Bosch and are similar to Honda. It uses existing steel strip models and conducts independent product validation. So as far as the steel belt is concerned, there is not much difference between the domestic CVT and the Japanese CVT. The main differences are in the cone wheel and hydraulic fluid. The CVT can theoretically withstand high torque, and it is currently proven that it can reach 450Nm.
However, the increase in torque is not the core, because the existing technology of the CVT target model can fully meet the requirements. The R&D focus of CVT is on transmission efficiency (more fuel efficient), large transmission ratio, cost reduction, and quietness. Honda is a paranoid technical person, and the tuning of the CVT gearbox is more direct and linear. In the absence of any start-up assistance.
Such an adjustment is a big test for the steel belt and cooling system. In fact, Honda is supposed to optimize the start-up phase like Toyota, but so far, Honda hasn't changed its traditional philosophy. Toyota's tuning of the engine and transmission is all for stability. The stability is better in the later stage, and the failure rate is lower. Honda's tuning of the engine and transmission tends to be aggressive, resulting in poor stability and reliability in the later stages.
All in all, the above sharing on this topic is my personal opinion and advice. I hope the topics I share will help you and that you will enjoy my sharing. If you have a better analysis on this topic, please share your comments. Come out and discuss this topic together.
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