B - Operations – Transporting – 60 – K
Patent
B - Operations, Transporting
60
K
B60K 23/08 (2006.01) B60K 17/00 (2006.01) B60K 17/348 (2006.01) B60K 17/356 (2006.01) F16H 63/40 (2006.01) F16H 63/44 (2006.01) F16H 61/46 (2006.01)
Patent
CA 2056847
An electronic control is provided for a vehicle having a main drive for propelling the vehicle, a fluid pump for providing pressurized fluid, and a supplemental drive driven by the pressurized fluid for providing supplemental propulsion for the vehicle. A main drive sensor senses the speed of the main drive and responsively produces a main drive speed signal. A supplemental drive sensor senses the speed of said supplemental drive and responsively produces a supplemental drive speed signal. A microprocessor receives the main and supplemental drive speed signals, modifies the main drive signal by a preselected amount and responsively produces a modified main drive speed signal. The microprocessor further produces an error signal responsive to a difference between the supplemental and modified main drive speed signals and processes the error signal to produce a control signal. A fluid control device receives the control signal and controls fluid flow in the supplemental drive in response to the control signal.
Olson Stephen R.
Sorrells Giles K.
Tate William J.
Caterpillar Inc.
Kirby Eades Gale Baker
LandOfFree
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