Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2011-03-08
2011-03-08
Gimie, Mahmoud (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C123S299000
Reexamination Certificate
active
07904233
ABSTRACT:
A system and method comprises operating an engine during a first cycle to drive a piston in a cylinder without energizing a fuel injector of the cylinder; acquiring first pressure data of the cylinder for a predetermined crank angle window during the first cycle; energizing the fuel injector for an energizing time during a second cycle; acquiring second pressure data of the cylinder for the predetermined crank angle window during the second cycle; calculating a pressure ratio difference average (PRDA) from the first pressure data and the second pressure data; and modifying the operation of the fuel injector based on the PRDA value.
REFERENCES:
patent: 5359883 (1994-11-01), Baldwin et al.
patent: 5482016 (1996-01-01), Ohishi et al.
patent: 5592915 (1997-01-01), Ohishi et al.
patent: 5712424 (1998-01-01), Reed
patent: 6470849 (2002-10-01), Duffy et al.
patent: 6553211 (2003-04-01), Zhou
patent: 7197918 (2007-04-01), Shen
Sae International 2000-01-0932,Cylinder-Pressure-Based Engine Control Using Pressure-Ration Management and Low-Cost Non-Intrusive Cylinder Pressure Sensors, Mark C. Sellnau, Frederic A. Matekunas, Paul A. Battiston, Chen-Fang Chang, and David Lancaster, 22 pages, Copyright 2000.
Dissertation ETH No. 16037 titled,Control-Oriented Modeling of a NO Emissions of SI Engines, Daniel Brand, 182 pages, 2005.
Battiston Paul Anthony
French Donald Terry
Haskara Ibrahim
Kweon Chol-Bum M.
Matekunas Frederic Anton
Gimie Mahmoud
GM Global Technology Operations Inc.
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