Mercedes-Benz has presented a new Euro 6 Blue Efficiency engine series developed especially for the commercial vehicles. The new engine series received the codename OM93x and is extremely economical thanks to the long service lives, low fuel consumption, AdBlue and engine oil and long maintenance intervals. The new engines are fitted with variable valve timing, which can be found for the first time in a diesel engine.

The medium-duty OM 934 and OM 936 engines, with four and six cylinders and a displacement of 5.1 and 7.7 litres respectively, cover a power range from 115 kW (156 hp) to 260 kW (354 hp). In the long term, the two engines will replace the engines of the 900 series launched in 1996, with a production volume to date of almost one million units.

"The new engines set new benchmarks in their class. They have been designed in uncompromising manner for environmental friendliness, economy and performance," noted Georg Weiberg, Head of Truck Product Engineering Daimler Trucks, at the presentation of the engines. For the first time ever in an engine series for commercial vehicles, all the engines comply with the future Euro VI emissions standard. Euro VI will be mandatory in the EU from 2013/14. "As such, Mercedes-Benz is once again assuming the pioneering role in environmental protection," Weiberg added. He emphasized that this was particularly important for the OM 93x, as medium-duty engines are deployed primarily in trucks and buses which are used in conurbations, where reductions in emissions directly benefit the local population.

"We have invested around 500 million euros in development of the new Mercedes-Benz OM 934 and OM 936 engines and their production facilities at the Mannheim plant," said Stefan Buchner, Head of Global Powertrain, Procurement and Manufacturing Engineering Daimler Trucks. "This commitment has paid off: the new OM93x series is a milestone among medium-duty engines and suitable for a diverse range of applications – in trucks, buses and as an industrial engine."

The new engines are tailor-made for light- to heavy-duty distribution transport and for service in light- and medium-duty construction and long-haul transport. The OM 936 is also designed for deployment in urban and rural-service buses in vertical and rural-service buses in vertical and horizontal configuration. The new engines will be also available in other brands and models of Daimler Trucks.

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