Motor vehicles – With means for detecting wheel slip during vehicle...
Patent
1994-07-15
1995-12-12
Focarino, Margaret A.
Motor vehicles
With means for detecting wheel slip during vehicle...
36442407, 180243, B60K 17356
Patent
active
054741475
ABSTRACT:
A method is provided for controlling hop in an all wheel drive machine having a torque control lever and a pump for supplying pressurized fluid to wheel motors for effecting all wheel drive. The method includes monitoring machine speed and motor pressure, sensing a first motor pressure fluctuation and subsequent motor pressure fluctuations indicative of a hop, determining desired pump pressure based upon machine speed, and overriding the torque control lever and holding pump pressure constant at desired pump pressure for a preselected time in response to detecting a predetermined number of hops occurring at a predetermined frequency.
REFERENCES:
patent: 4236595 (1980-12-01), Beck et al.
patent: 4396087 (1983-08-01), Rock et al.
patent: 5147010 (1992-09-01), Olson et al.
patent: 5190111 (1993-03-01), Young et al.
Kitzerow John P.
Yesel Leon P.
Caterpillar Inc.
Focarino Margaret A.
James John L.
Johnson Victor E.
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