A computational study of free-piston diesel engine combustion

被引：98

作者：

Mikalsen, R. ^{[1
]}

Roskilly, A. P. ^{[1
]}

机构：

[1] Univ Newcastle, Sir Joseph Swan Inst Energy Res, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

APPLIED ENERGY | 2009年 / 86卷 / 7-8期

关键词：

Free-piston; Diesel; Combustion; Linear engine; CFD;

D O I：

10.1016/j.apenergy.2008.08.004

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

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. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1136 / 1143

页数：8

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