摘要
以R180单缸卧式水冷涡流室式柴油机进/排气系统为研究对象,采用计算流体动力学(CFD)技术与稳流试验相结合的方法,对涡流室式柴油机进/排气系统的性能展开研究,对进/排气道、空气滤清器和消声器结构进行优化设计,减少流动阻力,提高进气量和减少残余废气量,改善柴油机的性能和降低排放.整机性能试验表明:进/排气系统优化后,速度特性上的充量系数均增大,标定工况下燃油消耗率降低了3.0%,;CO、HC+NOx和PM排放的实测值分别为2.209、4.520和0.561,g/(k W·h),相比原机分别降低了26.7%,、7.0%,和9.3%,.
To optimize emissions and performances of a single-cylinder water-cooled swirl chamber diesel engine,intake and exhaust system was optimized by computational fluid dynamics（CFD）and steady flow test method.The configurations and performances of intake and exhaust port,air filter and muffler were optimized for reducing flow resistance,increasing charge amount and lowering residual exhaust gas,leading to the improvement of engine performances and emissions.Testing results show that,with the optimized intake and exhaust system,the volumetric efficiency increased and the brake specific fuel consumption of rated condition reduced by 3.0%,.The measured values of CO,HC＋NO_x and PM were 2.209,4.520,and 0.561,g/（k W·h）,decreasing by 26.7%,,7.0%, and 9.3%, respectively compared with the original engine.
出处
《内燃机学报》
EI
CAS
CSCD
北大核心
2016年第1期68-73,共6页
Transactions of Csice
基金
江苏省高校优势学科建设工程资助项目(苏证办发[2015])
江苏省科技重点研发计划资助项目(BE2015188)
关键词
涡流室式柴油机
进/排气道
流量系数
排放
性能
swirl chamber diesel engine
intake and exhaust port
flow coefficient
emission
performance
