润滑油灰分对直喷汽油机颗粒捕集器性能影响  

Effect of lubricating oil ash on performance of gasoline particle filter in direct injection gasoline engine

作　　者：汤东[1] 韩宇彬 华伦[2] 潘金冲 刘胜 Dong TANG;Yu-bin HAN;Lun HUA;Jin-chong PAN;Sheng LIU(School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang 212013,China;Suzhou Automotive Research Institute,Tsinghua University,Suzhou 215200,China)

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013 [2]清华大学苏州汽车研究院,江苏苏州215200

出　　处：《吉林大学学报（工学版）》2022年第11期2501-2507,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51876085);移动源污染排放控制技术国家工程实验室项目(NELMS2017C05);可靠性国家重点实验室开放基金项目(skler-202105)。

摘　　要：为研究不同灰分等级润滑油对汽油机颗粒捕集器(GPF)耐久性能的影响,本文基于快速老化试验,分析了灰分累积对发动机转矩、油耗、背压、过滤效率、气体污染物转化效率以及储氧性能的影响。结果表明:润滑油灰分等级越高,加载在GPF中的灰分越高,灰分的捕集率也越高;灰分累积会使发动机动力性能和GPF催化性能都有所下降,但一定量的灰分可以提高GPF的过滤效率,降低PN的排放。In order to study the influence of different ash grade lubricants on the durability of gasoline particle filter(GPF),the effects of ash accumulation on engine torque,fuel consumption,back pressure,filtration efficiency,gas pollutant conversion efficiency and oxygen storage performance were analyzed based on the rapid aging test. The results show that the higher the ash grade of lubricating oil,the higher the ash content in GPF and the higher the ash trapping rate. Ash accumulation will decrease the engine dynamic performance and the catalytic performance of GPF,but a certain amount of ash can improve the filtration efficiency of GPF and reduce PN emissions.

关 键 词：动力机械及工程 汽油机颗粒捕集器 灰分 润滑油 耐久性能 催化性能 

分 类 号：TK417[动力工程及工程热物理—动力机械及工程]