A computational study of free-piston diesel engine combustion

R. Mikalsen and A.P. Roskilly

Applied Energy, 2009, vol. 86, issue 7-8, 1136-1143

Abstract: This paper investigates the in-cylinder gas motion, combustion process and nitrogen oxide formation in a free-piston diesel engine and compares the results to those of a conventional engine, using a computational fluid dynamics engine model. Enhanced radial gas flow (squish and reverse squish) around top dead centre is found for the free-piston engine compared to a conventional engine, however it is found that this has only minor influence on the combustion process. A higher heat release rate from the pre-mixed combustion phase due to an increased ignition delay was found, along with potential reductions in nitrogen oxides emissions formation for the free-piston engine.

Keywords: Free-piston; Diesel; Combustion; Linear; engine; CFD (search for similar items in EconPapers)
Date: 2009
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Citations: View citations in EconPapers (32)

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