Bosch has announced the development of a special transmission option specifically for electric vehicles, on which multistage gearboxes are practically not used. The company assures that their modernized CVT will increase the range of battery vehicles by reducing energy consumption
- The main advantage of the variator at Bosch is the ability to smoothly adjust the gear ratio due to the design features. At low speeds, such a box improves traction performance, which optimizes acceleration dynamics or helps with towing and off-road driving, and at high speeds, it improves energy efficiency and increases top speed. In addition, the variator reduces power consumption when driving at a constant speed.
- The CVT thus eases the performance requirements of the powertrain, which means that electric vehicles can be supplied with less powerful and cheaper motors. In addition, the use of a continuously variable transmission will allow the use of more compact batteries.
- A component developed by the company called CVT4E, according to the calculations of engineers, increases the efficiency of the electric vehicle’s power plant by 4%. Now the variator is being tested on test Volkswagen e-Golf at the facilities of the Dutch division of the concern, but the prospects for its commercial application have not yet been reported.
In modern electric cars, in the overwhelming majority of cases, single-stage gearboxes are used. Only the Porsche Taycan and Audi e-tron GT platforms have a two-stage solution.