富氧燃烧对PFI氢内燃机性能的影响  

Effects of Oxygen-Enriched Combustion on Performance of PFI Hydrogen Engine

作　　者：付洪宇 柴华 孙柏刚[1] 包凌志 FU Hongyu;CHAI Hua;SUN Baigang;BAO Lingzhi(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;China North Engine Research Institute(Tianjin),Tianjin 300400,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]中国北方发动机研究所(天津),天津300400

出　　处：《车用发动机》2020年第4期1-6,共6页Vehicle Engine

基　　金：中国博士后科学基金(2018M641215)。

摘　　要：通过试验验证了利用富氧进气提高进气道喷射氢内燃机功率的可行性,进行了氢气-空气样机试验和30%、40%进气氧浓度试验,并基于这些数据搭建并标定了发动机一维仿真模型。结果表明:当量比为0.7时,进气氧浓度增至30%,功率平均提高20.5%,有效热效率平均降低2%;进气氧浓度增至40%,功率平均提高36.5%,热效率降低4%。该结果可以指导下一步更高进气氧浓度的氢内燃机试验,并且为改善进气道喷射氢内燃机的动力性提供了一种新方法。The feasibility of using oxygen-enriched air to increase the power of intake-port hydrogen injection internal combustion engine was verified by experiments.Hydrogen-air prototyping tests and 30%,40%intake oxygen concentration tests were conducted.Based on these data,the one-dimensional simulation model of engine was built and calibrated.The results show that the power increases by 20.5%and the brake thermal efficiency decreases by 2%on average when the equivalence ratio is 0.7 and the intake oxygen concentration increases to 30%.The power increases by 36.5%and the thermal efficiency decreases by 4%when the intake oxygen concentration increases to 40%.The results can guide the future tests of engine with higher intake oxygen concentration and provide a new method for improving the power of intake-port hydrogen injection internal combustion engine.

关 键 词：氢内燃机 富氧燃烧 进气道喷射 

分 类 号：TK463[动力工程及工程热物理—动力机械及工程]