Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2005-08-23
2005-08-23
Argenbright, Tony M. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C123S568210, C123S568120, C123S568220, C060S602000, C060S605200, C073S117020, C073S118040
Reexamination Certificate
active
06934621
ABSTRACT:
A control for an internal combustion engine that includes an exhaust gas recirculation system predicts at least one of the intake manifold temperature in EGR mode or an intake manifold pressure in EGR mode, but preferably both, during Boost mode operation. The predictions are relied upon to calculate an intake manifold critical temperate in EGR, at which condensation would occur. The control then compares the predicted temperate value with the calculated intake manifold critical temperature, and if the predicted value exceeds the calculated temperature, the control commands re-entry into exhaust gas recirculation mode.
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Bhargava Sameer
Lewallen Brian A.
Ramamurthy Ravishankar
Argenbright Tony M.
Brooks & Kushman P.C.
Detroit Diesel Corporation
Hoang Johnny H.
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