Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2011-07-12
2011-07-12
Wolfe, Jr., Willis R (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C123S445000, C123S490000, C701S105000
Reexamination Certificate
active
07979194
ABSTRACT:
The operation of a fuel injector for an internal combustion engine is controlled, wherein the fuel injector has an on time that includes a pull-in time during which injector current increases to a pull-in current followed by a hold time during which the injector current is limited to a hold current that is less than the pull-in current. A control circuit receives a pressure signal from a pressure sensor that corresponds to a pressure of fuel supplied to the fuel injector for injection into the engine, correlates the pressure signal with fuel pressure, and decreases the pull-in time with increasing fuel pressure.
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PCT International Search Report and Written Opinion dated Sep. 9, 2008 relating to PCT/US2008/066520.
Buchanan David L.
Wilhelm Daniel D.
Barnes & Thornburg LLP
Cummins Inc.
Hoang Johnny H
Schelkopf J. Bruce
Wolfe, Jr. Willis R
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