Future electric cars also need to be equipped with transmissions. This is a new concept that has been uploaded from the "Power Technology Roundtable Forum" a few days ago. Recently, the "Power Technology Roundtable Forum" around "What kind of transmissions are required for Chinese urban roads" was successfully held in Beijing. In the face of increasingly severe environmental problems and the future development of new energy vehicles, Nissan Motors's Drive System Development Director Yamamoto Kiyoshi and Nissan's (China) R&D Department's Deputy General Manager Miyoshi Misaki have received an exclusive interview with Phoenix Motors.
Strong development of CVT "In recent years, MT (manual), AT (auto), DCT (dual clutch) and other transmissions have developed to a certain extent. The torque converter lock-up time of AT developed by its team has been shortened, corresponding to the shift transmission efficiency. From 64% to 89%; DCT only needs to improve friction materials, improve dry heat resistance, and adopt special cooling methods, but the effect is not necessarily significant.†School of Transportation Science and Engineering, Beihang University Prof. Xu Xiangyang, the dean, believes that “the potential for research and development of CVT (continuously variable transmission) steel strip is large, and currently only a few manufacturers such as Bosch and Nissan are committed to this field, so the future development space is higher than that of AT and DCT.â€
In the face of the industry's use of CVT and DCT, Nissan’s (China) deputy general manager of research and development, Miyoshi Misaki pointed out that “Nissan CVT technology is still advanced.â€
“In fact, Nissan has had AT and CVT in the past and even now, and even DCT is equipped with DCT. In our view, CVT has advantages in terms of CO2 emission reduction, fuel consumption, and driving performance.†Nissan Motor Co., Ltd. In an interview with Phoenix Motors, Minister of Driveline Development Yamamoto Kiyosu emphasized that the CVT7 and CVT8 used in Nissan’s models today have advantages in terms of CO2 emission reduction, fuel consumption, and improvement in driving performance.
It is understood that currently Nissan's products, CVT is widely used in cars, SUVs, commercial vehicles and other different models, the most representative models for the NV200, the new trend on behalf of Chi Chun, the new days.
The Promise of electric vehicles from <br> <br> with conventional cars to tap the potential of CVT, the new energy vehicles will probably happen next great technological revolution.
“At present, the mainstream of pure electric vehicles adopts a continuously variable transmission, such as the Nissan LEFT and Tesla, but from the perspective of increasing the mileage and lowering the cost of the entire vehicle, the future electric vehicles will adopt two-speed or three-speed transmissions. Greatly improve the high-speed performance of electric vehicles.†Xu Xiangyang said.
Experts in the industry pointed out that the current electric vehicles are generally not equipped with transmissions, which leads to low transmission efficiency of the electric vehicles in the high-speed range, and the energy consumption is escalating. In order to improve the high-speed performance of electric vehicles, it is necessary to equip electric vehicles with a two-speed to three-speed transmission equivalent to a fuel vehicle.
"From a technical point of view, it will be a trend to popularize pure electric vehicles in the future." Yamamoto Kiyohide believes that the use of multi-speed transmissions can improve the range of electric vehicles and improve the driving performance at high speeds. Electric vehicles equipped with multi-speed transmissions should It is a technological trend. Resin Craft
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