Analyses about parameters that affect cyclic variation in a spark ignition engine

被引：70

作者：

Galloni, Enzo ^{[1
]}

机构：

[1] Univ Cassino, Dept Ind Engn, I-03043 Cassino, Italy

来源：

APPLIED THERMAL ENGINEERING | 2009年 / 29卷 / 5-6期

关键词：

SI engine; Cyclic variation; CFD analyses; RANS approach;

D O I：

10.1016/j.applthermaleng.2008.06.001

中图分类号：

O414.1 [热力学];

学科分类号：

070201 [理论物理];

摘要：

The combustion stability of a small spark-ignition engine has been investigated by means of both experimental tests and numerical analyses. The cyclic variation in combustion has been measured at part load considering several combustion chamber geometries. For each considered operating point, the in cylinder phenomena characterizing the engine have been reproduced by CFD analysis performed by means of a RANS approach. The properties of the mean flow calculated in the spark region at the spark time seem to affect the extent of the measured cyclic dispersion. In particular, for the investigated engine, the measured coefficient of variation in the indicated mean effective pressure seems correlated with both the calculated mean laminar flame speed and the calculated mean turbulence intensity. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1131 / 1137

页数：7

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