Press release #Mobility

Bosch hybrid system successful in the FIA World Endurance Championship

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
Cornelia Dürr

Cornelia Dürr


Abstatt, Monza – 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 vehicle's 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:

Mobility is the largest Bosch Group business sector. In 2023, its sales came to 56.2 billion euros, or just under 60 percent of total Group sales. This makes the Bosch Group one of the leading mobility suppliers. Bosch Mobility pursues a vision of mobility that is safe, sustainable, and exciting. For its customers, the outcome is integrated mobility solutions. The business sector’s main areas of activity are electrification, software and services, semiconductors and sensors, vehicle computers, advanced driver assistance systems, systems for vehicle dynamics control, repair-shop concepts, as well as technology and services for the automotive aftermarket. Bosch is synonymous with important automotive innovations, such as electronic engine management, the ESP anti-skid system, and common-rail diesel technology.

The Bosch Group is a leading global supplier of technology and services. It employs roughly 429,000 associates worldwide (as of December 31, 2023). The company generated sales of 91.6 billion euros in 2023. Its operations are divided into four business sectors: Mobility, Industrial Technology, Consumer Goods, and Energy and Building Technology. With its business activities, the company aims to use technology to help shape universal trends such as automation, electrification, digitalization, connectivity, and an orientation to sustainability. In this context, Bosch’s broad diversification across regions and industries strengthens its innovativeness and robustness. Bosch uses its proven expertise in sensor technology, software, and services to offer customers cross-domain solutions from a single source. It also applies its expertise in connectivity and artificial intelligence in order to develop and manufacture user-friendly, sustainable products. With technology that is “Invented for life,” Bosch wants to help improve quality of life and conserve natural resources. The Bosch Group comprises Robert Bosch GmbH and its roughly 470 subsidiary and regional companies in over 60 countries. Including sales and service partners, Bosch’s global manufacturing, engineering, and sales network covers nearly every country in the world. Bosch’s innovative strength is key to the company’s further development. At 136 locations across the globe, Bosch employs some 90,000 associates in research and development, of which nearly 48,000 are software engineers.

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