河北科技大学学报2025，Vol.46Issue(4)：355-365,11.DOI:10.7535/hbkd.2025yx04001
低温环境下喷油参数对柴油机燃烧和排放的影响
Influence of fuel injection parameters on combustion and emissions of diesel engine under low temperature environment
摘要
Abstract
In order to study the impact of different injection parameters(number of injection holes,injection angle,injection advance angle)on the in-cylinder combustion and emission performance of diesel engine under low temperature environment,a three-dimensional model of a certain type of direct-injection diesel engine was established,and combustion simulation was carried out for different injection parameters of diesel engine under low temperature environment.The results show that the fuel injection parameters influence the fuel injection duration,the fuel spatial distribution,the swirl in the pit at the bottom of the combustion chamber,the penetration distance and diffusion angle of the fuel spray,the fuel-air mixing time and mixing effect,which will affect the combustion and emission performance of the diesel engine;The diesel engine can obtain the best power performance under low temperature environment when the number of injection holes is 8,the injection angle is 150°,and the injection advance angle is 18℃A BTDC(before top dead center).The mechanism of the influence of injection parameters on diesel engine combustion and emission under low temperature environment has been obtained,which provides some reference for the optimization of diesel engine injection parameters under low temperature environment.关键词
内燃机工程/柴油机/喷油参数/燃烧模拟/低温环境Key words
internal combustion engine engineering/diesel engine/fuel injection parameters/combustion simulation/low temperature environment分类
能源科技引用本文复制引用
朱海荣,郭雪芳,邸智鹏,王钊..低温环境下喷油参数对柴油机燃烧和排放的影响[J].河北科技大学学报,2025,46(4):355-365,11.基金项目
国家自然科学基金(52406087) （52406087）
教育部"春晖计划"合作科研项目(HZKY20220237) （HZKY20220237）
河北省自然科学基金(E202208009) （E202208009）
