• Bosch is development partner of Audi Sport
  • Audi R18 e-tron quattro is first hybrid sport prototype with Bosch technology
  • Since 2006, overall victory has gone to diesel-powered vehicles with Bosch injection systems

Audi R18 e-tron quattro 2012

The Audi Sport team will again be on the starting grid for this year’s “24 Hours of Le Mans” endurance race on June 16th and 17th, 2012. With diesel-powered cars, the team drove to victory in this long-distance race from 2006 to 2008, and again in 2010 and 2011 – each time with Bosch injection technology on board.

And Bosch is also the development partner for Audi’s new R18 e-tron quattro and R18 ultra race cars. For both cars, Bosch is once again supplying the complete common-rail diesel injection system. This includes the high-pressure pump, injectors, and high-pressure rail. In addition, Bosch Motorsport is supplying its customised MS 24 engine control unit, the starter, generator, wiring harness, and telemetry system.

During the race, the latter transmits all relevant vehicle data from the car to the pit by radio and WLAN. The Audi race cars also feature a new electrically assisted rack and pinion steering system. It was developed by Audi Sport in collaboration with Robert Bosch GmbH and ZF Lenksysteme GmbH, a 50-50 joint venture between Robert Bosch GmbH and ZF Friedrichshafen AG.

Audi R18 e-tron quattro with diesel hybrid drive For the Audi R18 e-tron quattro, the new Le Mans prototype with hybrid drive, Bosch Motorsport is also supplying the motor-generator unit (MGU). It was developed especially for use in the Audi R18 e-tron quattro. Installed on the front axle and featuring integrated power electronics, the MGU electrically feeds the energy recuperated during braking into a flywheel. During acceleration, the MGU drives the race car’s front axle via two electric motors. Each electric motor delivers 75 kW.

High share of diesel powered cars on the roads Since 2006, overall victory at Le Mans has been won by diesel race cars. “The teams fully exploited the main benefits of diesel technology, which are high torque and low consumption,” says Dr. Markus Heyn, president of the Bosch Diesel Systems division. “And many drivers are also reaping the benefits of diesel every day, in normal driving conditions.” In 2011, as many as half of all newly registered passenger cars in Germany had diesel engines.

As an experienced systems and components supplier for many race series, Bosch Motorsport and its experts have the systems competence and integration know-how required for motor racing applications. Bosch Motorsport is part of Bosch Engineering GmbH, a Bosch subsidiary that specialises in engineering services. It can look back on 111 years of participation in the world of motor racing. As early as 1901, Bosch technology first helped racing drivers to victory.