Method and apparatus for controlling a supplemental vehicle driv

Details Method and apparatus for controlling a supplemental vehicle driv Method and apparatus for controlling a supplemental vehicle driv

1990-12-06

1992-09-15

Marmor, Charles A.

Motor vehicles

With means for detecting wheel slip during vehicle...

180243, 180308, 3644241, B60K 2816, B60K 17356

Patent

active

051470101

ABSTRACT:
An electronic control is provided for a vehicle having an engine, a main drive driven by the engine, a fluid pump driven by the engine for providing pressurized fluid, and a supplemental drive driven by the pressurized fluid. The electronic control includes a main drive sensor for sensing the speed of the main drive and responsively producing a main drive speed signal. A vehicle speed sensor senses the speed of the vehicle relative to the ground and produces a vehicle ground speed signal. A pressure sensor senses the pressure of the pressurized fluid supplied to the supplemental drive by the pump and responsively produces an actual pressure signal. A processor receives the main drive speed, vehicle ground speed, and actual pressure signals, produces a slip ratio signal responsive to a ratio of the main drive speed and vehicle ground speed signals, produces a desired pressure signal responsive to the slip ratio signal, produces an error signal responsive to a difference between the desired and actual pressure signals, and controls the fluid pressure in the supplemental drive in response to the error signal.

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Patent Abstracts of Japan, vol. 10, No. 181 (M-492 (2237) 25 Jun. 1986 & JP-A-61 27729 (Aisin Warner 7 Feb. 1986).
Pg. 16, of Jan., 1990, issue of OEM Magazine.

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