发明名称 |
Automotive catalyst oxygen storage capacity diagnostic |
摘要 |
An engine exhaust system includes a catalytic converter. An inlet sensor senses a first oxygen level of exhaust gases entering the catalytic converter. An outlet sensor senses a second oxygen level of exhaust gases exiting the catalytic converter. A controller communicates with a fuel system of an engine, the inlet sensor, and the outlet sensor. The controller initiates a rich condition after a fuel cut-off period and calculates a mass of oxygen released by the catalytic converter based on a mass air flow into the engine. The controller calculates a target oxygen storage capacity (OSC) of the catalytic converter over a target time period.
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申请公布号 |
US2004159094(A1) |
申请公布日期 |
2004.08.19 |
申请号 |
US20030368894 |
申请日期 |
2003.02.18 |
申请人 |
YURGIL JAMES R.;GUNSELMAN JOHN M. |
发明人 |
YURGIL JAMES R.;GUNSELMAN JOHN M. |
分类号 |
F01N11/00;F02D41/02;F02D41/12;F02D41/14;F02D41/18;(IPC1-7):F01N3/00;F01N7/00 |
主分类号 |
F01N11/00 |
代理机构 |
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代理人 |
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主权项 |
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