In-Cylinder Fluid Motion and Emissions of a Conventional and Re-entrant Diesel Combustion Systems 911842

The optimization of combustion system of a single-cylinder d.i. diesel engine, representative of heavy-duty family, is discussed.
The characterization of in-cylinder fluid motion of a conventional straight-sided and a re-entrant combustion chamber, carried out by LDA technique, is presented.
Engine tests, using the same chambers and sacless nozzles with different holes diameter and appropriate spray angle, have been performed.
Strong reduction of smoke and HC emissions has been obtained, remaining unchanged the engine performance.


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