喷氢压力对PFI氢内燃机进气及燃烧过程的影响  

The effect of hydrogen injector pressure on intake and combustion process of PFI hydrogen internal combustion engine

作　　者：王凯心 

机构地区：[1]华北水利水电大学,河南郑州450045

出　　处：《汽车实用技术》2017年第22期98-100,共3页Automobile Applied Technology

摘　　要：文章以一台单缸四气门进气道喷射式氢内燃机为对象,利用数值模拟的方法研究分析了喷氢压力对氢内燃机进气及燃烧过程的影响。结果表明:随着喷氢压力的增大,缸内混合气均匀性,瞬时放热率,缸内最大压力,最高燃烧温度均呈现出先升高后降低的趋势。适当提高喷氢压力有利于改善氢内燃机的进气和燃烧过程,但过高的喷氢压力会引起进气道内新鲜空气倒流。In this paper, the effect of hydrogen injection pressure on the intake and combustion process of hydrogen internal combustion engine was studied by means of numerical simulation method with a single-cylinder four-valve port fuel injection hydrogen engine. The results show that with the increase of hydrogen injection pressure, the uniformity coefficientof the mixture, the heat release rate, the maximum pressure and combustion temperaturein the cylinder show a tendency to increase first and then decrease. Appropriate increase in hydrogen pressure is conducive to improving the hydrogen engine intake and combustion process, but too high hydrogen pressure will cause the intake of fresh air backflow.

关 键 词：氢内燃机 进气道喷射 喷氢压力 燃烧 

分 类 号：TK46[动力工程及工程热物理—动力机械及工程]