Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2011-03-01
2011-03-01
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
C701S103000, C701S104000, C123S674000, C123S443000
Reexamination Certificate
active
07899605
ABSTRACT:
During lean combustion, an ECU as a control device for a diesel engine calculates a ratio between a target A/F value and a detected A/F value detected by a A/F sensor, wherein the target A/F value is a ratio between a target air volume and a target injection amount in order to obtain a request torque. The ECU calculates the air volume after compensation during rich combustion by multiplying the target air volume with the compensation gain value. The ECU instructs an air intake throttle valve and an EGR valve to regulate those opening degrees according to the calculation result in order to decrease a torque difference between the lean combustion and the rich combustion.
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Denso Corporation
Nixon & Vanderhye PC
Wolfe, Jr. Willis R
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