Browse Publications Technical Papers 2007-24-0016

Ideal homogeneous combustion versus partly homogeneous combustion for PC diesel engines 2007-24-0016

Because of its outstanding efficiency, the direct-injection diesel engine is the preferred drive source in many fields. However, its emission behavior, especially with regard to particulate and nitrogen-oxide emissions, is problematic. A promising approach to reducing emissions inside the engine is presented by various (partially) homogeneous diesel combustion processes, which use suitable mixture formation and combustion management to prevent the formation of nitrogen-oxide and soot. In this paper, starting out from an ideally homogeneous combustion process with manifold injection, two further partially homogeneous combustion processes with internal mixture formation are examined. With regard to the maximum obtainable indicated mean effective pressure and the combustion noise, the ideally homogeneous combustion process proved - in the examined configuration - not to be desirable. The partially homogeneous combustion processes, on the other hand, show greater potential, especially for use at higher loads.


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