Trend-setting engine architecture for HD truck engines driven by future development targets

The paper is a contribution to the discussion about a suitable future engine architecture, which has to cope with two contrary demands: the high mechanical and thermal loads in the engine and the need for a cost efficient, light weight engine design. Based on combustion related requirements of future emission legislation and expected performance requirements, a possible scenario of engine types and displacements is described. Features of a proposed bottom and top end concept such as liner and crankcase concept, cylinder head bolt pattern. cylinder head concept, and suitable materials - are discussed. with the target to define a solution especially capable of high cylinder peak pressures and cost efficient at the same time.