Technical Paper
Vehicle Refinement Challenges for a Large Displacement Engine with Cylinder Deactivation Capability
2011-05-17
2011-01-1678
Ever increasing challenges on reducing emissions and improving fuel economy has led to the development of not only alternate fuels but also new Powertrain technologies. One such technology employed within the new Bentley Mulsanne is cylinder deactivation, where 4 out of 8 cylinders of a large displacement V8 engine are turned off during light load conditions. This paper identifies the considerations and technical development that was undertaken to deliver limousine levels of cabin refinement with imperceptible half engine mode operation under cruise conditions whilst achieving the desirable sporty character of a large V8. A practical approach to transfer path analysis incorporating structural path disconnections and exhaust orifice routing and its benefits are discussed.
