A method and system for monitoring an exhaust gas

专利名称：A method and system for monitoring an

exhaust gas sensor

发明人：Surnilla, Gopichandra申请号：EP02102621.6申请日：20021121公开号：EP1314869A1公开日：20030528

专利附图：

摘要：A method and system for monitoring a post-catalyst exhaust gas sensor (,66)in an engine (12) is provided. The engine (12) includes a cylinder bank (16) coupled to acatalyst (52) and an exhaust gas sensor () disposed downstream of the catalyst (52)

generating a first signal. The method includes supplying a rich air-fuel mixture to thecylinder bank (16), supplying a lean air-fuel mixture to the cylinder bank (16) to supplyoxygen to the catalyst (52) and includes indicating the exhaust gas sensor () isdegraded when the first signal does not indicate a lean air-fuel ratio after supplying thelean air-fuel mixture for a first predetermined time period.

申请人：Ford Global Technologies, Inc.

地址：600 Parklane Towers East Dearborn, Michigan 48126 US

国籍：US

代理机构：Messulam, Alec Moses

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