Interrelated power delivery controls – including engine control – Transmission control – Engine controlled by transmission
Reexamination Certificate
2005-12-27
2009-06-09
Le, David D. (Department: 3655)
Interrelated power delivery controls, including engine control
Transmission control
Engine controlled by transmission
C477S054000, C477S091000, C477S110000
Reexamination Certificate
active
07544148
ABSTRACT:
A system is provided for controlling the speed of a vehicle having a powertrain including a power plant operably coupled to a transmission. The system includes a control unit configured to receive a signal indicative of vehicle speed, receive a signal indicative of power plant output speed, and determine a desired power plant output speed based on the signal indicative of vehicle speed and the signal indicative of power plant output speed. The control unit is further configured to send a signal to the power plant such that the power plant operates at the desired power plant output speed, and maintain a desired vehicle speed in a manner substantially independent of a magnitude of load on the powertrain.
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Anderson Michael D.
Simon Danial P.
Strashny Igor
Caterpillar Inc.
Chang, II Richard K. C.
Finnegan Henderson Farabow Garrett & Dunner
Le David D.
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