System and method for controlling vehicle speed

Details System and method for controlling vehicle speed System and method for controlling vehicle speed

2006-10-06

2009-12-29

Estremsky, Sherry L (Department: 3655)

Interrelated power delivery controls, including engine control

Transmission control

Engine controlled by transmission

C477S110000, C477S111000

Reexamination Certificate

active

07637845

ABSTRACT:
A system is provided for controlling the speed of a vehicle having a power plant and a transmission. A control unit is configured to receive a signal indicative of the speed of the vehicle. The control unit is further configured to determine a desired output speed of the power plant based on the signal indicative of the speed of the vehicle, a signal indicative of the gear ratio of the transmission, and a desired vehicle speed associated with the gear ratio. The control unit is also configured to send a signal to the power plant, such that power plant operates at an output speed that substantially maintains the desired vehicle speed in a manner substantially independent of a magnitude of load on the power plant.

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