发明名称 |
ON-BOARD CATALYST HEALTH MONITORING AND CONTROL SYSTEM ADAPTATION IN INTERNAL COMBUSTION ENGINES |
摘要 |
Various embodiments include systems adapted to monitor catalyst deterioration. Some embodiments include a catalyst deterioration detection system including a pre-catalytic converter gas sensor, a post-catalytic converter gas sensor, at least one computing device in communication with the pre-catalytic converter and post-catalytic converter gas sensors, the at least one computing device configured to monitor catalyst deterioration by performing actions including estimating a catalyst gas storage level by comparing a difference between a pre-catalytic converter gas level from the pre-catalytic converter gas sensor and a post-catalytic converter gas level from the post-catalytic converter gas sensor, comparing the estimated catalyst gas storage level to a baseline catalyst gas storage level and determining that the catalyst is deteriorated in response to the baseline catalyst gas storage level exceeding the estimated gas storage level by a threshold difference. |
申请公布号 |
US2015139860(A1) |
申请公布日期 |
2015.05.21 |
申请号 |
US201314083823 |
申请日期 |
2013.11.19 |
申请人 |
General Electric Company |
发明人 |
Devarakonda Maruthi Narasinga Rao |
分类号 |
F01N11/00;F01N9/00 |
主分类号 |
F01N11/00 |
代理机构 |
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代理人 |
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主权项 |
1. A catalyst deterioration detection system comprising:
a pre-catalytic converter gas sensor; a post-catalytic converter gas sensor; at least one computing device in communication with the pre-catalytic converter and post-catalytic converter gas sensors, the at least one computing device configured to monitor catalyst deterioration by performing actions including:
estimating a catalyst gas storage level by comparing a difference between a pre-catalytic converter gas level from the pre-catalytic converter gas sensor and a post-catalytic converter gas level from the post-catalytic converter gas sensor;comparing the estimated catalyst gas storage level to a baseline catalyst gas storage level; anddetermining that the catalyst is deteriorated in response to the baseline catalyst gas storage level exceeding the estimated gas storage level by a threshold difference. |
地址 |
Schenectady NY US |