发明名称 |
Catalyst deterioration monitoring |
摘要 |
A catalyst system employed in the exhaust stream of an internal combustion engine (10) wherein the catalyst deterioration is monitored by an engine controller (26) connected to a first oxygen sensor (22) mounted upstream of a catalyst (18) and a second oxygen sensor (24) mounted downstream. After a cold start of the engine (10) a light-off time for the catalyst (18) is determined as one way to measure the deterioration of the catalyst. After the engine (10) has warmed up to operating temperature, a test is run to determine the ability of the catalyst (18) to store oxygen therein, being another indication of catalyst deterioration.
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申请公布号 |
US6050128(A) |
申请公布日期 |
2000.04.18 |
申请号 |
US19980086265 |
申请日期 |
1998.05.28 |
申请人 |
FORD GLOBAL TECHNOLOGIES, INC. |
发明人 |
HAMBURG, DOUGLAS RAY;MEYER, DANIEL LAWRENCE |
分类号 |
F01N11/00;(IPC1-7):F01N3/20 |
主分类号 |
F01N11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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