The New High Performance 4-Cylinder Diesel Engine of Mercedes-Benz

Authors

Dr.-Ing. Markus Kemmner, Dr.-Ing. Mario Mürwald, Dipl.-Ing. Stefan Arndt, Dipl.-Ing. Heiko Sass, Dipl.-Ing. Tillmann Braun, Dipl.-Ing. Rüdiger Pfaff, Naser Rouholamin, Frank Kromer, Dipl.-Ing. Torben Roth, Dipl.-Ing. Stefan Ellwanger, Dipl.-Ing. Oliver Erlenmayer, Peter Knauel,
Daimler AG, Stuttgart

Summary

This paper explains the technical concept of the top-of-the-range 4-cylinder Diesel engine, the OM 654 top type, along with its portfolio positioning within the new Diesel engine family at Mercedes-Benz.

The design features and base architecture principles of the engine and peripherals used to achieve the lofty development goals are laid out in this paper. The technologies designed to reduce emissions and fuel consumption are explained, including the design and functionality of the thermodynamics, combustion, exhaust
gas recirculation and charge cycle with two-stage turbocharging and exhaust aftertreatment. To this end, existing technology modules where taken from the engine family including the OM 654 single-stage base 4-cylinder engine and the OM 656 6-cylinder engine and then further developed. Finally the paper presents the results obtained from the engine and powertrain combination in the E-Class W213.

The new OM 654 4-cylinder engine with two-stage turbocharging expands the Mercedes-Benz Diesel engine portfolio by adding the portfolio position 300 d, and with its performance and agility characteristics it makes its way into areas which were previously the preserve of 6-cylinder engines.

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