Fuel economy opportunities for internal combustion engines by means of oil-cooling

被引：0
|
作者：
Ma C.F. [1 ]
Li J.C. [1 ]
Qin W.X. [1 ]
Wei Z.Y. [1 ]
Chen J. [1 ]
机构：
[1] Department of Thermal Science and Engineering, Beijing Polytechnic University
来源：
Journal of Thermal Science | 1997年 / 6卷 / 2期
基金：
中国国家自然科学基金;
关键词：
Internal combustion engines; Internal cooling; Oil cooling;
D O I：
10.1007/s11630-997-0028-z
中图分类号：
学科分类号：
摘要：
Comparative experiments of oil and water-cooling were performed on a 4-cylinder automotive gasoline engine and a single-cylinder direct injection Diesel engine. Measurements were made to investigate the variation of fuel consumption, combustor wall temperature and engine emissions (HC, CO, NO x and smoke) with two cooling media at steady-state conditions. Significant improvement of fuel economy was found mainly at partial load conditions with oil-cooling in comparison with the baseline water-cooling both for the two engines. The experimental results also showed general trend of reduction in engine emissions using oil as the coolant. Measurements of wall temperature demonstrated that oil-cooling resulted in considerable increase of the combustor wall temperature and reduce of warm-up period in starting process. For automotive gasoline engine, road tests indicated the same trend of fuel economy improvement with oil-cooling. The' performance of the automotive oil-cooled engine was further improved by internal cooling with water or methanol injection.
引用
收藏
页码：132 / 140
页数：8
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