Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2006-09-01
2010-02-02
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
C123S436000, C123S674000, C123S687000
Reexamination Certificate
active
07657361
ABSTRACT:
An electronic control unit30of a diesel engine10stores a relationship between a required fuel injection amount and a corresponding injection command signal. The unit30generates the injection command signal corresponding to the required fuel injection amount based on the stored relationship, and drives injectors20based on the injection command signal to inject fuel. The unit30includes a shifting section, which forcibly changes the engine rotational speed by temporarily shifting the fuel injection mode between a first injection mode and a second injection mode. The first injection mode is a mode in which an after injection is executed after a main injection. The after injection has less fuel injection amount than the main injection. The second injection mode is a mode in which the after injection is not executed. The unit30includes a correction section, which detects the variation of the engine rotational speed caused by shifting the fuel injection mode, and corrects the relationship based on comparison between the detected variation of the engine rotational speed and a previously determined standard variation of the engine rotational speed.
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Inoue Mikio
Terada Yasuyuki
Kwon John T
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Toyota Jidosha & Kabushiki Kaisha
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