Tracked vehicle steering control system with non-centered...

Details Tracked vehicle steering control system with non-centered... Tracked vehicle steering control system with non-centered...

B - Operations, Transporting

62

D

B62D 11/00 (2006.01) B62D 11/18 (2006.01)

Patent

CA 2307799

A control system is provided for a tracked vehicle drive/steering system which has an engine driven hydraulic steering pump which drives a hydraulic steering motor. In one embodiment, the control system operates to gradually reduce the magnitude of the steering pump control signals if the vehicle is stationary, the clutch is engaged and these conditions persist for at least a certain time period, and to further or more rapidly reduce the magnitude if the vehicle seat is not occupied. In an alternate embodiment, the control system operates to limit the magnitude of the steering pump control signals as a function of the acceleration of wheel speed. In another alternate embodiment, the control system operates to quickly reduce the magnitude of the steering pump control signals if the vehicle is stationary, the clutch is engaged and the transmission is commanded to be in a non-neutral gear, between the time the gear is commanded and the vehicle motion begins.

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