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
C123S568110, C123S568120, C060S599000, C060S605200
Reexamination Certificate
active
07979196
ABSTRACT:
A power system including an exhaust producing engine, an exhaust system and an exhaust gas recirculation (EGR) system is provided. The EGR system may include an EGR flowpath and an air intake system. The EGR system may also include an EGR valve configured to regulate the flow of exhaust gases through the EGR flowpath. The power system may also include a monitoring system configured to monitor operating parameters of at least two components of the EGR system. The power system may also include a controller configured to determine, based on the monitored operating parameters, a maximum flowrate value for each of the components. Each of the maximum flowrate values may represent the maximum EGR flowrate for that component. The controller may be configured to control the EGR valve, based on the maximum flowrate values, to result in an EGR flowrate no greater than the lowest of the maximum flowrate values.
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Dea Kevin
Durand James
Jacobson Evan
Caterpillar Inc.
Finnegan Henderson Farabow Garrett & Dunner LLP
Wolfe, Jr. Willis R
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