Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2009-01-30
2011-10-11
Wolfe, Jr., Willis (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C123S568140, C123S568210, C060S605200
Reexamination Certificate
active
08036813
ABSTRACT:
In an internal-combustion engine with exhaust-gas-recirculation system, electronic control means are provided designed to process an analytical model of the quantities “effective lambda” and “effective EGR percentage”, which is constructed on the basis of the physical laws that regulate the fluid-dynamic conditions in the intake pipe, in the exhaust pipe, and in the recirculation pipe of the engine. On the basis of the deviation between the values of said quantities estimated by the model and the reference values of said quantities associated to the conditions of operation of the engine, an operation of correction on the control of the valve that governs the recirculation circuit is implemented.
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European Search Report for EP 08425101 completed Aug. 8, 2008.
Lanfranco Enrico
Tonetti Marco
C.R.F. Societa Consortile per Azioni
Nixon & Vanderhye P.C.
Wolfe, Jr. Willis
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