Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2005-10-18
2005-10-18
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
C701S101000, C701S103000, C701S109000, C477S111000
Reexamination Certificate
active
06957139
ABSTRACT:
A system for controlling a vehicle drivetrain in a fuel-efficient manner includes a control computer operable to define a contour from substantially zero engine load to substantially full engine load, wherein the contour may correspond to a fuel-efficient path from no-load to full-load engine operating conditions. With change gear transmissions, the control computer is operable to control transmission shift points about the contour. With continuous variable transmissions the control computer is operable to modify the effective gear ratio thereof to maintain engine operation on or about the contour. In either case, fuel efficient operation may be optimized.
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Argenbright Tony M.
Barnes & Thornburg
Cummins Inc.
Hoang Johnny H.
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