Maximum speed 20000rpm JATCO bridge technology analysis

Speaking of JATCO, those who often pay attention to parts may know that this Japanese company is undisputedly strong in the field of CVT. It is still unknown whether the gearbox, a good partner of the internal combustion engine, will still exist after the arrival of the pure electric era. Therefore, JATCO is changing, and this time they have come up with the electric bridge technology, which is a new research and development result.

CVT continuously variable transmission does not have a fixed gear ratio in the traditional sense. With the characteristic of continuously variable transmission ratio, it can always keep the engine running in an economical condition. This characteristic also makes it popular with many economic-oriented models. JATCO has been mass-producing CVT transmissions since 1997, which is 22 years ago.

Although CVT has a weaker shifting feel than AT and DCT, and many people criticize it for not bringing driving pleasure, CVT has increased its installed capacity due to its own advantages at a time when emission regulations are becoming increasingly stringent. The CVT transmission previously launched by JATCO also supports hybrid technology, which can be said to be keeping up with the trend of "energy conservation and emission reduction".

From the "back"

At the Shanghai Auto Show, which just concluded, they showcased new solutions for the advent of the pure electric era, mainly targeting China, the world's largest pure electric vehicle market. What's more noteworthy is that this product is not a gearbox, but a drive motor.

Generally, we are used to looking at new cars from front to back, but this time we will start with the motor on the rear axle. The information on the display board shows that its maximum speed can reach 20,000 rpm, which is significantly higher than similar products on the market. The miniaturization of the motor is conducive to saving space on the one hand, and the higher output power is also an advantage on the other.

Friends who have driven electric vehicles must have found that the overall power consumption increases significantly after the speed exceeds 90km/h. This is because the motor has a faster speed adjustment speed than the internal combustion engine, so many electric vehicles are not equipped with a gearbox, but a reducer. This design is sufficient for urban road conditions, but it is inevitably stretched at high speeds. Therefore, some relatively high-end pure electric vehicles on the market have begun to be equipped with double-stage reducers to optimize the energy consumption of vehicles when driving at high speeds.

The technology displayed by JATCO this time adopts a highly integrated design. At the same time, due to its wide torque output space, it can adapt to the layout requirements of most pure electric vehicles on the market. In addition, with its many years of development and manufacturing strength in the field of gearboxes, the overall quality control is even better. One of its target customer groups is the car companies in the Chinese market that do not have independent research and development and manufacturing of motors.

Summary of the full text:

Driven by policies and regulations, pure electric technology, which appeared earlier than internal combustion engines but could not defeat the former in the last century, is rapidly becoming popular. Influenced by this, many well-known suppliers related to traditional internal combustion engines have begun to transform, and JATCO is one of them. The electric drive system displayed this time has obvious advantages in speed over existing products on the market and can better meet the needs of miniaturized vehicles.