[1]陈昊,马其华,耿莉敏..氧传感器对排放及三元催化器转化效率的影响研究[J].郑州大学学报(工学版),2007,28(02):93-96.[doi:10.3969/j.issn.1671-6833.2007.02.024]
　CHEN Hao,Ma Qihua,Geng Limin.Study on the influence of oxygen sensor on emission and conversion efficiency of three-way catalytic converter[J].Journal of Zhengzhou University (Engineering Science),2007,28(02):93-96.[doi:10.3969/j.issn.1671-6833.2007.02.024]
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氧传感器对排放及三元催化器转化效率的影响研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
28
期数:
2007年02期
页码:
93-96
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Study on the influence of oxygen sensor on emission and conversion efficiency of three-way catalytic converter
作者:
陈昊; 马其华; 耿莉敏.
长安大学,汽车学院,陕西,西安,710064, 长安大学,汽车学院,陕西,西安,710064, 长安大学,汽车学院,陕西,西安,710064
Author(s):
CHEN Hao; Ma Qihua; Geng Limin
关键词:
汽车工程;  电控发动机;  氧传感器;  三元催化器;  排放;  转化效率
Keywords:
DOI:
10.3969/j.issn.1671-6833.2007.02.024
文献标志码:
A
摘要:
在发动机故障模拟试验台上研究了电控发动机氧传感器常见故障对发动机排放以及三元催化转换器转化效率等指标的影响进行了试验研究.结果表明:若氧传感器发生断开故障,对于怠速工况,发动机的喷油脉宽与排放量基本保持不变;对于常用工况,发动机的功率略有增加,油耗增加较多,CO和HC排放增加,NOx排放降低.若氧传感器发生排气通孔堵塞故障,发动机的性能变化与氧传感器发生断开故障相仿.在三元催化器前后分别检测排气污染物浓度,可以判断三元催化器性能的优劣.在常用工况下,若三元催化器转化效率低下,通过更换新氧传感器后三元催化器
Abstract:

The influence of common faults of electronically controlled engine oxygen sensors on engine emissions and conversion efficiency of three-way catalytic converters was studied on the engine fault simulation test bench. The results show that if the oxygen sensor is disconnected, the fuel injection pulse width and emission of the engine remain basically unchanged for the idle condition. For common working conditions, the power of the engine increases slightly, fuel consumption increases more, CO and HC emissions increase, and NOx emissions decrease. If the exhaust hole of the oxygen sensor is blocked, the performance change of the engine is similar to the disconnection fault of the oxygen sensor. The concentration of exhaust pollutants before and after the three-way catalytic converter can be detected separately, and the performance of the three-way catalytic converter can be judged. Under common working conditions, if the conversion efficiency of the three-way catalytic converter is low, the three-way catalytic converter is replaced by replacing the new oxygen sensor

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更新日期/Last Update: 1900-01-01