小型高速单缸卧式柴油机的直喷式燃烧研究

Study of direct injection combustion in small high speed single cylinder horizontal diesel engines

将ｓ１１００Ａ型柴油机的气缸直径从１００ｍｍ扩大到１０２ｍｍ，并且将其涡流室式燃烧系统改为直喷式燃烧系统。在此基础上研制成功了１１０２型直喷式柴油机。实验结果表明，１１０２型直喷式柴油机比Ｓ１１００Ａ型涡流室式柴油机的性能指标有了较大幅度的提高。在标定工况下，输出功率从１１ｋＷ提高到１２．５ｋＷ，转速从２２００ｒ／ｍｉｎ提高到２３００ｒ／ｍｉｎ，燃油消耗率从２５３ｇ／（ｋＷ·ｈ降低到２３４ｇ／（ＫＷ·ｈ）．本研究结果为我国研制小型高速直喷式柴油机提供了相当的基础。

In S1100A diesel engines ,the cylinder bore is expanded frorn 100 to 102 mm and theswirl chamber combustion system is substituted by the direct injection combustion system, Basedon these conditions 1102 direct injection diesel engine is developed. The experimental resultsshow that the performance of 1102 direct injection diesel engine is improved greatly, comparedwith S1100A diesel engine. Under rated conditions, the power output is increased from 11 kW inS1100A diesel engine to 12. 5 kW in 1102 D.I. diesel engine, the engine speed is increased from2200 rpm to 2300 rpm, and the specific fuel consumption is reduced by 19 g/(kW· h), from253g/(kW· h)to 234g/(kW· h).This research work has provided corresponding basis fordevelopment of small D. I.diesel engines with high speed in China.