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Bosch develops electrified axle for semitrailers

Matt RossBy Matt RossAugust 28, 20182 Mins Read
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Bosch develops electrified axle for semitrailers

Bosch has developed an electrified axle that can be integrated into semitrailers.

Integration of an electrical machine into the semitrailer axle creates the opportunity to capture electricity under braking, which can be fed into the trailer’s power units – an application particularly suited for commercial refrigeration vehicles.

Bosch estimates that a cooling unit powered by this recovered energy can yield a cost saving of as much as €10,000 (US$11,695) a year.

“Bosch is making trucks’ rear axles electric and smart,” said Markus Heyn, member of the Robert Bosch board of management. “Our electrification solution for trucks makes economic sense and shows how electromobility can work even in today’s trucks.”

The energy recovery axle technology is available on new solutions, but also as a retrofit service.

The electrified axle uses components from passenger cars. The SMG180 electric motor used in the application is already utilized in large numbers of electric and hybrid vehicles, such as the German postal service’s StreetScooters.

However, in the truck axle application, the electrified system is only in use when energy can be recuperated – such as under braking or when traveling downhill. The collected energy is stored in a high-voltage battery, and can then be fed into the vehicle’s motors (for example, during hill starts) or to the trailer’s refrigeration unit.

The electrified axle also represents an important step toward the company’s vision of automated trailer parking. The addition of a powertrain to the electric axle would make it possible to move container trailers without a tractor.

“Bosch’s electrified axle makes trailers independent,” added Heyn. “By electrifying trailers, Bosch is taking an important step toward automated parking at freight depots.”

Bosch develops electrified axle for semitrailers

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Matt Ross

Matt joined UKi Media & Events in 2014 after seven years of living and working in Dubai. He has been a journalist for over a decade and has worked for a wide range of publications, including Rolling Stone, Time Out, iQ and Loaded. After starting out on the automotive team as deputy editor of Engine Technology International, Electric & Hybrid Vehicle Technology International and Transmissions Technology International, he began editing Electric & Hybrid Vehicle Technology International in 2016, and took over as editor of Tire Technology International in 2018.

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