The new Mercedes-Benz EU VI medium-duty CNG engine in bus operation

The necessary introduction of Euro VI leads to the decision of Daimler to develop a common natural gas engine platform for Mercedes-Benz trucks and buses. The new 7.7 l engine M 936 G replaces a 6.9 l and a 11.9 l engine. The main target is to have many commonalities with the Diesel engine of the same platform. From the bus application view, the downsized gas engine enables a common engine compartment, reduced weight and fuel consumption, longer service intervals and lower noise. EvoBus and Daimler development groups were solving challenges like local high engine periphery temperatures and acceleration performance. With adapting the new gas engine to the Citaro C2 generation better load distribution, new vehicle electronics and a new gas tank system with easier access is introduced.