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
Cronin, Stephen K. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C123S436000, C123S488000, C701S111000
Reexamination Certificate
active
10523138
ABSTRACT:
Combustion failures of an internal combustion engine are controlled in closed loop fashion by sampling an engine r.p.m. to obtain a speed signal. The speed signal is subjected to a Hartley-Transformation to obtain angular frequencies or engine orders which are further processed to identify the cylinder which had a combustion failure and thereby reduced an actual engine power output compared to a rated power output. A power output correcting signal is produced and supplied to the engine. The system for performing these steps includes at least a speed signal sampler, a frequency analyzer to perform the Hartley-Transformation, a cylinder identifier or classifier and a controller which supplies the closed loop control signal to the engine.
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patent: WO 99/44028 (1999-09-01), None
patent: WO 02/38936 (2002-05-01), None
A. L. Lattka et al., “Application of the Hartley transform in monitoring and diagnosis of machines”, 8129 AT Automatisierungstechnik; vol. 37, No. 9, Oldenbourg Verlag; Munich, Federal Republic of Germany; Sep. 1989. pp. 349-354, XP000066109, ISSN: 0718-2312, with English Abstract.
Hagel Reinhold
Krell Stephan
Schimmelpfennig Peter
Tuna Mehmet
Conti Temic microelectronic GmbH
Cronin Stephen K.
Fasse W. F.
Fasse W. G.
Hoang Johnny H.
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