Bosch hybrid system successful in the FIA World Endurance Championship

– Bosch supplies system technology as well as electric motor, inverter, hybrid control unit and electric braking system for the new LMDh platform within the hypercar category

– LMDh platform supports a new era of long-distance racing in WEC and IMSA

Abstatt, Monza – WEBWIRE – Friday, July 7, 2023

The WEC racing series starts the second half of the season with the 6 Hours of Monza. On the historic race track near Milan, the two factory teams from Porsche and Cadillac will be competing with the new LMDh system within the hypercar category. Bosch is the official systems engineering lead for the hybrid system. Additionally, Bosch is the exclusive supplier for the electric motor (MGU), the inverter (MCU) and the hybrid control unit (HCU) as well as the electric braking system (EBS) that is also capable of recuperation. The hybrid system is flexible and can be combined with different vehicle and engine concepts, while still offering a high level of performance. In drive mode, it delivers a permanent output of 50 kW, and up to 200 kW in recuperation mode. The LMDh system features high-cost efficiency thanks to standardized parts, enabling vehicle manufacturers and teams to compete under attractive conditions at endurance classics such as Le Mans, Daytona, Sebring or Monza.

In this first half of the year, it was important to be able to experience the system under real racing conditions. The last four WEC races enabled us to collect a lot of valuable data and experience. The season highlight in Le Mans and the 24-hour continuous use of the components is now behind us and this without any abnormalities or technical problems, which we are very satisfied with. But also the constant close exchange with the teams helps to continuously optimize the system and to be a strong partner before and during the races, says Ingo Mauel, Head of Bosch Motorsport.

The electric braking system (EBS) from Bosch Motorsport also withstood the high stresses of the previous endurance races. It uses brake-by-wire technology, in which the electronics take care of transmitting the braking signal. When the driver presses the brake pedal, the electronic control unit is activated, the electric motor reverses, and the vehicles kinetic energy is converted into electrical energy and fed back into the battery. When hybrid technology is fully optimized, braking energy is recovered that would otherwise be lost to heat, so the driver can race dynamically with less fuel.

We now want to make full use of the second half of the season to analyze data together with the technology partners, teams and the racing series and to further improve the system, says Mauel.

Further information:

https://www.bosch-motorsport.com/