Power plants – Internal combustion engine with treatment or handling of... – Having sensor or indicator of malfunction – unsafeness – or...
Reexamination Certificate
2011-08-16
2011-08-16
Denion, Thomas E (Department: 3748)
Power plants
Internal combustion engine with treatment or handling of...
Having sensor or indicator of malfunction, unsafeness, or...
C060S273000, C060S299000, C060S300000
Reexamination Certificate
active
07997066
ABSTRACT:
The diagnosis of the heating of a catalytic converter situated in an exhaust system of an internal combustion engine is described. The system includes monitoring the actual ignition angle intervention. A current ignition angle is acquired over a specified time and converted into a torque model used for catalytic converter heating. Using the torque model, a degree of fulfillment of executed catalytic converter heating measures is obtained and an error signal is generated by comparing the obtained degree of fulfillment to a limiting value.
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Subject Matter Eligibility Test (M-or-T) for Process Claims, eligible Oct. 30, 2008.
Kiefer Wolf
Kraemer Gerd
Schulz Gerhard
Uhl Stefan
Bayerische Motoren Werke Aktiengesellshaft
Crowell & Morning LLP
Denion Thomas E
Klasterka Audrey
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