The Mercedes-Benz Group C Engines for the World Sports Prototype Racing Championships 1989 and 1990 920674
The M119 HL, a twin turbocharged V8-5 I-engine, was developed by Mercedes-Benz AG for Group C World Championship Race events based on the production engine used for the Mercedes-Benz passenger car range. *
Due to the fuel consumption limitation for Group C-Cars - 51 litre/ 100 km - a high efficiency race engine was required to achieve the target fuel consumption during race events using a commercially available “pump” fuel.
Given these restrictions, the latest version of the M119 HL-engine had a power output of 530 kW and minimum brake specific fuel consumption values of 235 - 260 g/kWh over the engine speed range.
This paper discusses the conceptual ideas behind the design of such a high-performance engine with optimized fuel consumption, especially concerning turbocharging and engine management.
Furthermore, the development of the engine's mechanical components is shown in comparison to the series production engine design.
Citation: Hiereth, H., Baehrens, W., Müller, W., and Withalm, G., "The Mercedes-Benz Group C Engines for the World Sports Prototype Racing Championships 1989 and 1990," SAE Technical Paper 920674, 1992, https://doi.org/10.4271/920674. Download Citation
Hermann Hiereth, W.D. Baehrens, Willi Müller, Gert Withalm
International Congress & Exposition
New Engine Design and Cooling Systems-SP-0918, SAE 1992 Transactions: Journal of Engines-V101-3