论文部分内容阅读
本文介绍一种新型高压缩比汽油机燃烧系统—UICC燃烧室的试验研究结果在CA1102单缸试验机上对UICC燃烧室进行了试验研究,当压缩比由原机的7.4提高到8.6时,发动机取得了较满意的性能.试验结果表明,UICC燃烧室在缸径大、导热性差的铸铁缸盖汽油机上的试验是成功的;该燃烧系统具有良好的抗爆性、运转平稳、性能良好.发动机的功率和扭矩比原机分别提高3.75%和和8.6%;外特性最低燃料消耗率由原机的292g/(kW·h)降低到266.6g/(kW·h),下降8.6%,最高有效热效率从28%提高到30.7%.排气中有害排放物与原机相比,CO排放量明显下降,但是NO_x和HC有所增加.
In this paper, a new high compression ratio gasoline engine combustion system-UICC combustion chamber experimental research results in the CA1102 single cylinder test machine on the UICC combustion chamber was studied when the compression ratio from the original machine 7.4 to 8.6, the engine made The results show that the UICC combustion chamber has been successfully tested on cast-iron cylinder head gasoline engine with large bore and poor thermal conductivity.The combustion system has good antiknock performance, stable operation and good performance.The engine power and The torque was increased by 3.75% and 8.6% respectively compared with that of the original unit; the lowest fuel consumption rate of external characteristic was reduced from 292g / (kW · h) to 266.6g / (kW · h) by 8.66%, the highest effective thermal efficiency was 28% % To 30.7%. Exhaust harmful emissions Compared with the original machine, CO emissions decreased significantly, but NO_x and HC increased.