LPG进气道液态喷射的实验研究  

Experimental Study on Intake Liquid Injection of LPG-Fueled Engine

作　　者：邵千钧[1] 何文华[1] 周文华[1] 刘宏伟[1] 栾亦木[1] 徐航[1] 

机构地区：[1]浙江大学动力机械及车辆工程研究所,浙江杭州310027

出　　处：《内燃机学报》2003年第1期65-68,共4页Transactions of Csice

基　　金：国家自然科学基金资助项目(50176044)。

摘　　要：设计了LPG低压液态喷射的燃料供应系统和控制系统,对LPG进气道液态喷射进行了实验研究。将液态喷射与气态喷射及燃用汽油时的动力性、排放作了对比,研究了空燃比对LPG液态喷射发动机性能的影响。结果表明:采用液态喷射方式具有良好的动力性;与燃用汽油相比污染物排放得到很大改善;与气态喷射相比HC排放量略有上升,NOx下降。空燃比对发动机性能的影响与燃用汽油时基本一致。The lowpressure fuel supply system of liquid state LPG and fuel injection system are designed and manufactured.The comparisons of power performance and emission among liquid fuel injection, gas fuel injection and gasoline are done. The relation of air fuel ratio and engine performance is found.The results show that the power performance of liquid fuel injection engine is good and the emissions are reduced.In comparison with gas fuel injection, the HC is increased and NOx is reduced.The effects of air fuel ratio on LPG liquid injection engine performances are the same as that on the gasoline engine.

关 键 词：LPG 液化石油气 燃料喷射 动力性 排放 发动机 空燃比 汽车 

分 类 号：U473.24[机械工程—车辆工程]