Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2007-05-15
2007-05-15
Kwon, John T. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C701S102000
Reexamination Certificate
active
11339943
ABSTRACT:
A method of diagnosing an operating condition of a short runner valve in an intake manifold of an internal combustion engine using an exhaust sensor in an exhaust manifold of the internal combustion engine. The short runner valve is commanded to an open position for a test period, it is resolved whether the test period has elapsed, and it is determined whether a sensed exhaust gas parameter has exceeded a threshold during the test period. A pass signal is issued if the sensed exhaust gas parameter has exceeded the threshold within the test period. Otherwise, a fail signal is issued if the sensed exhaust gas parameter has not exceeded the threshold within the test period.
REFERENCES:
patent: 7028650 (2006-04-01), Lewis et al.
patent: 7031821 (2006-04-01), Lewis et al.
patent: 7079935 (2006-07-01), Lewis et al.
patent: 2005/0205028 (2005-09-01), Lewis et al.
patent: 2005/0205047 (2005-09-01), Lewis et al.
Keighron Craig
Ploucha David P
Sager Roger C
Stephens Thomas
DaimlerChrysler Corporation
Jurecko Thomas A.
Kwon John T.
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