摘要
在均质混合气引燃模式下,研究了不同汽油比例和柴油喷射时刻对燃烧、常规气体和微粒的影响。发动机转速设定为1600 r/min,设定循环喷油量总热值为原机50%负荷工况喷油总热值,设定汽油比例为65%、70%、75%,柴油主喷时刻为−10°CA、−5°CA以及0°CA。结果表明:在本次试验的最优策略下扭矩提升5%,NOx比排放降低60%,达到0.31 g/(kW·h),核态微粒数量浓度降低80%,积聚态微粒数量浓度降低97%。本文研究结果展现了均质混合气引燃模式在降低微粒和NOx方面的巨大潜力。
Based on the homogeneous charge induced ignition combustion mode,this paper studies the effects of gasoline ratios and diesel injection timing on combustion conventional gases and particulates emission.The engine speed is set to 1600 r/min,the total calorific value of the circulating fuel injection quantity is set to the total calorific value of the original engine under 50%working condition and the gasoline ratio is set to 65%,70%,75%.The injection time is fixed at-340°CA;gasoline injection pressure is fixed at 0.35 MPa,diesel main injection time is-10°CA,-5°CA and 0°CA,diesel preinjection amount is 30%of total diesel injection amount,The results show that under the optimal strategy in this test,the torque is increased by 5%,the specific NOx emission is reduced by 60%to 0.31 g/(kW·h),the concentration of nuclear particles is reduced by 80%,and the concentration of accumulated particles is reduced by 97%,The research results of this paper show the great potential of homogeneous mixture pilot mode in reducing particulates and NOx.
作者
苏岩
王博
刘宇
解方喜
胡云峰
段加全
SU Yan;WANG Bo;LIU Yu;XIE Fang-xi;HU Yun-feng;DUAN Jia-quan(State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,China;State Key Laboratory of Comprehensive Technology on Automobile Vibration and Noise&Safety Control,China FAW Group Corporation,Changchun 130011,China)
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2022年第1期37-45,共9页
Journal of Jilin University:Engineering and Technology Edition
基金
汽车振动噪声与安全控制综合技术国家重点实验室开放基金项目(FAWSKL2020KFJJC1)
吉林省科技发展计划项目(20200403150SF)
吉林省教育厅科学技术研究项目(JJKH20211086KJ).
关键词
均质引燃
喷射参数
微粒排放
homogeneous charge induced ignition
injection parameters
particle emissions
