Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2006-09-19
2006-09-19
Vo, Hieu T. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C123S568120, C060S605200
Reexamination Certificate
active
07110876
ABSTRACT:
An engine control device for controlling an exhaust gas recirculation operation includes a variable-capacity turbo supercharger, an EGR valve, a supercharging pressure controller, an EGR controller, and an EGR correction amount calculator. The variable-capacity turbo supercharger varies a flow through an exhaust turbine to change a supercharging pressure. The EGR valve adjusts an exhaust reflow amount of gas flowing from an exhaust passage to an air intake passage. The supercharging pressure controller drives the supercharger to control the supercharging pressure. The EGR controller drives the EGR valve to control the exhaust gas recirculation operation. The EGR correction amount calculator calculates an EGR correction amount according to a change in the exhaust gas recirculation operation. The EGR controller performs a feedback control operation on the EGR valve in accordance with a deviation between an EGR control amount corrected by the EGR correction amount and a target EGR control amount.
REFERENCES:
patent: 6945236 (2005-09-01), Nakai et al.
patent: A-2001-003796 (2001-01-01), None
patent: A-2001-140652 (2001-05-01), None
patent: 2001-182575 (2001-07-01), None
patent: 2001-193573 (2001-07-01), None
Sugiyama Kouichi
Uchiyama Ken
Denso Corporation
Nixon & Vanderhye P.C.
Vo Hieu T.
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