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Reactivity controlled compression ignition combustion on a multi-cylinder light-duty diesel engine

Authors :
Robert M. Wagner
Reed Hanson
Scott Curran
Source :
International Journal of Engine Research. 13:216-225
Publication Year :
2012
Publisher :
SAGE Publications, 2012.

Abstract

Reactivity controlled compression ignition is a low-temperature combustion technique that has been shown, both in computational fluid dynamics modeling and single-cylinder experiments, to obtain diesel-like efficiency or better with ultra-low nitrogen oxide and soot emissions, while operating primarily on gasoline-like fuels. This paper investigates reactivity controlled compression ignition operation on a four-cylinder light-duty diesel engine with production-viable hardware using conventional gasoline and diesel fuel. Experimental results are presented over a wide speed and load range using a systematic approach for achieving successful steady-state reactivity controlled compression ignition combustion. The results demonstrated diesel-like efficiency or better over the operating range explored with low engine-out nitrogen oxide and soot emissions. A peak brake thermal efficiency of 39.0% was demonstrated for 2600 r/min and 6.9 bar brake mean effective pressure with nitrogen oxide emissions reduced by an order of magnitude compared to conventional diesel combustion operation. Reactivity controlled compression ignition emissions and efficiency results are compared to conventional diesel combustion operation on the same engine.

Details

ISSN :
20413149 and 14680874
Volume :
13
Database :
OpenAIRE
Journal :
International Journal of Engine Research
Accession number :
edsair.doi...........6c1f06ae7cddd3de4e36f5e0161ddf6d
Full Text :
https://doi.org/10.1177/1468087412442324