Method and device for monitoring an exhaust gas probe

Details Method and device for monitoring an exhaust gas probe Method and device for monitoring an exhaust gas probe

2011-01-25

2011-01-25

Cronin, Stephen K (Department: 3747)

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

C701S109000, C701S106000, C701S103000, C073S114730, C073S114720, C204S401000

Reexamination Certificate

active

07874285

ABSTRACT:
Depending on a trim controller diagnosis, a suspicion marker for an asymmetric ageing of the exhaust gas probe is allocated either a “true” value or a “false” value and, if the value of the suspicion marker is “true”, a dynamic diagnosis will be performed based on the exhaust gas probe's measuring signal, on the basis of the results of which diagnosis either an asymmetrically aged or a non-asymmetrically aged exhaust gas probe will be detected.

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Richard Van Basshuysen, Fred Schäfer; “Handbuch Verbrennungsmotor”; “Internal Combustion Handbook”; 2ndEdition; Jun. 2002; pp. 559-561; Vieweg and Sohn Verlagsgesellschaft mgH, Germany.

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