Piston friction analysis using a direct-injection single-cylinder gasoline engine

被引：13
|
作者：
Kikuchi, T
Ito, S
Nakayama, Y
机构：
[1] Toyota Motor Co Ltd, Component & Dynam Dept 1, Power Train Engn Div 1, Power Train Dev Ctr, Aichi 4718572, Japan
[2] Nippon Soken Inc, Aichi 4450012, Japan
来源：
JSAE REVIEW | 2003年 / 24卷 / 01期
关键词：
D O I：
10.1016/S0389-4304(02)00242-4
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Reducing piston friction is an effective means for engine friction improvement. A recent report indicated that, indirect-injection engines, the fuel sprayed on the cylinder bore surface (which "wets" the cylinder) affects piston lubrication. The analyses of piston friction together with lubrication behavior will accordingly become increasingly important. This study focused on the influences of cylinder wetting on piston friction characteristic through the use of a direct-injection single-cylinder engine. The study revealed that cylinder wetting reduces piston friction during the compression stroke, and that this phenomenon can be explained by the lowered oil viscosity on the cylinder bore surface caused by fuel wetting. (C) 2003 Society of Automotive Engineers of Japan, Inc. and Elsevier Science B.V. All rights reserved.
引用
收藏
页码：53 / 58
页数：6
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