润滑油灰分对直喷汽油机颗粒捕集器性能影响

doi:10.13229/j.cnki.jdxbgxb20210342

Abstract

Abstract:

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.

Key words: power machinery and engineering, gasoline particulate filter, ash, lubricating oil, durability, catalytic performance

CLC Number:

TK417

Dong TANG,Yu-bin HAN,Lun HUA,Jin-chong PAN,Sheng LIU. Effect of lubricating oil ash on performance of gasoline particle filter in direct injection gasoline engine[J].Journal of Jilin University(Engineering and Technology Edition), 2022, 52(11): 2501-2507.

Figures/Tables 11

Table 1

Table 2

Table 3

Basic TWC and GDF parameters"

参数

TWC

GPF

载体材料

堇青石

载体尺寸/（mm $×$ mm）

贵金属涂覆量/（g·cft^-1）

催化剂种类

贵金属比例

载体目数/cpsi

壁厚/mm

$?$ 118.4×91

铑∶钯

40∶20

750

0.0508

$?$ 118.4×101.6

铑∶钯

5∶5

300

0.2032

Table 3

Fig.1

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

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

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