The New Euro VI Natural Gas Engine for Mercedes-Benz Medium Duty Commercial Vehicles

Authors

Dipl.-Ing. M. Benz, Dr.-Ing. K. Hoffmann,
Dr.-Ing. M. Weirich, Dr.-Ing. H.-O. Herrmann, Daimler AG, Stuttgart

Year

2014

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 777

Summary

As part of renewing the portolio for Mercedes-Benz branded commercial vehicle engines, Daimler Trucks has introduced completely new, high efficient Diesel engines that comply with the Euro VI emissions standard for the heavy duty and medium duty model series. Particularly in the context of ecologically motivated customers and urban applications, natural gas engines offer a cost-effective alternative to their Diesel counterparts due to the more favorable CO₂ balance associated with the natural gas itself and the lower noise emissions generated by the engine. This is why Daimler Trucks has supplemented the OM93x model series to include a natural gas model, the M936NGT, which also complies with the Euro VI emissions standard. This engine has an inline, six-cylinder configuration that offers the same performance as the single-stage turbocharged Diesel model rated to 1,200 Nm torque and 220 kW power output. To realize a robust exhaust gas aftertreatment system, the operative concept defined was based on a three-way catalytic converter in conjunction with stoichiometric combustion.

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