摘要
基于双卷流燃烧系统(DSCS)及侧卷流燃烧系统(LSCS)利用燃烧室形状使燃油分别在纵向和横向空间形成卷流运动的结构特点,提出了能够在燃烧室横向和纵向空间依次形成卷流运动的复合卷流燃烧系统(MSCS)。为探究MSCS的试验性能,在单缸机试验台架上对不同燃油喷射角度下复合卷流(MS)燃烧室的速度特性进行了研究。研究结果表明,当燃油喷射方向正对分流造型尖端时,MSCS油耗及碳烟排放最低。为合理评价MSCS的燃烧及排放性能,与DSCS速度特性研究的试验结果进行对比。对比结果显示,相同工况下MS燃烧室的油耗较双卷流(DS)燃烧室降低4~5g/(kW·h),碳烟排放低于DS燃烧室60%左右,表明MSCS可有效地降低柴油机油耗及碳烟排放,提高柴油机综合性能。
Based on the structural characteristics of the double swirl combustion system（DSCS） and lateral swirl combustion system （LSCS）, which used the shape of combustion chamber to generate swirl motion in the longitudinal and lateral spaces, respectively, a multi-swirl combustion system （MSCS） was proposed to generate a double swirling in the longitudinal and lateral spaces of the combustion chamber. For exploring the experimental performance of MSCS, the speed-characteristics of the multi-swirl （MS） combustion chamber at different injection angles were studied on a single-cylinder diesel engine. Experimental results show that the MSCS has the lowest fuel consumption and soot emissions when the fuel injection direction is aimed at the tip of convex edge. Compared with the speed characteristics of the DSCS, the brake specific fuel consumption and soot emissions of MSCS were reduced by 4^-5 g/（kW＊h） and 60% , respectively under the same operating conditions, indicating that the MSCS can effectively reduce the fuel consumption and soot emissions, thereby improving the overall performance of the diesel engine.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2017年第5期64-70,共7页
Chinese Internal Combustion Engine Engineering
