For example, a new gearbox could allow the installation of smaller and cheaper batteries without limiting the range.
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One of the advantages of electric cars is their simplicity – they have significantly fewer moving components than internal combustion engines. After all, thanks to the specific characteristics of the electric motor, most electric motors use only a simple single-speed gearbox, through which power travels directly to the wheels.
Of course, there are exceptions, such as the Porsche Taycan and its sister model Audi E-Tron GT, under the hood of which we find a two-speed transmission next to the rear electric motor. But these are specifically built sports cars, moreover in the role of flagships.
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However, the German company Bosch, one of the largest suppliers in the automotive industry, thinks that electric car manufacturers should not turn up their noses over gearboxes. The company has introduced its special continuously variable CVT transmission for electric vehicles, which could bring a number of benefits.
The new CVT4EV, which was created by slightly modifying the traditional CVT transmission, should improve acceleration, increase top speed and, thanks to lower demands on the electric motor, increase efficiency, which in turn means lower energy consumption and higher range.
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The new gearbox could thus allow electric car manufacturers to fit machines with less powerful electric motors and smaller batteries without significant restrictions. In addition, the transmission could improve the vehicle’s traction, or offer better performance in off-road electric cars.
The new CVT4EV transmission is tested by Bosch Transmission Technology on a modified Volkswagen e-Golf. The estimated increase in efficiency should be around 4 percent, but the manufacturer has not yet mentioned any figures for performance. In addition, we don’t even know yet if the company is going to launch a new product on the market.
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