摘要
以自吸式4缸直喷电控高压共轨柴油机为例,试验研究柴油机排放中NOx和颗粒物随轨压和喷油提前角的变化规律。结果表明:一定喷油提前角范围内,NOx排放随着轨压的增大而升高,烟度随着轨压的增大而降低;喷油提前角大于一定值时,NOx排放与烟度受轨压影响较小;选择适当的喷油提前角并调整轨压能够有效降低NOx排放及颗粒物排放,使柴油机排放满足要求。
Taking a natural inspiration four cylinder direct injection electronically controlled high-pressure common rail diesel engine as an example,the variation of NOx emissions and particles with rail pressure,injection advance angle and pre-injection are explored.The results show that the emission of NOx increases with the increase of rail pressure,and the particles decrease.When the advance angle is greater than a certain value,the NOx emission and particles are less affected by the rail pressure.Choosing the appropriate injection advance angle and adjusting the rail pressure can effectively reduce NOx emissions and particles,so that the diesel engine can meet the emission requirements.
作者
王刚
赵福芹
李同楠
WANG Gang;ZHAO Fuqin;LI Tongnan(Weichai Heavy Machinery Co. , Ltd. , Weifang 261000,China)
出处
《内燃机与动力装置》
2020年第3期20-25,共6页
Internal Combustion Engine & Powerplant
基金
国家重点研发计划项目(2017YFC0211305)。
关键词
高压共轨技术
轨压
喷油提前角
NOX排放
烟度
预喷
high-pressure common rail technology
rail pressure
injection advance angle
NOx emission
smoke
pre-injection
