Articulated vehicle steering with bogie feedback

Details Articulated vehicle steering with bogie feedback Articulated vehicle steering with bogie feedback

1996-06-24

1998-03-31

Sotelo, Jesus D.

Motor vehicles

Steering gear

With fluid power assist

180432, 180139, B62D 509

Patent

active

057327890

ABSTRACT:
A steering system for an articulated vehicle (11) including steering cylinders (19, 21) wherein the steering system includes a steering control valve (31) having a housing (33) fixed to a rear bogie portion (15). The steering control valve (31) includes a spool valve (49) receiving steering input and a follow up sleeve valve (51) which receives feedback representative of a change in the articulation angle of the front bogie portion (13) by means of a linkage arrangement (123, 117, 63). Either the follow up movement of the sleeve relative to the spool, to reduce main system flow, or the follow up of the sleeve relative to the housing, to reduce the load signal, is used as a way of cushioning the steering, as the front and rear bogie portions (13, 15) approach maximum articulation.

REFERENCES:
patent: 3631937 (1972-01-01), Joyce
patent: 4071108 (1978-01-01), Iida
patent: 4802545 (1989-02-01), Nystuen et al.
patent: 5193637 (1993-03-01), Lindblom
patent: 5520262 (1996-05-01), Marcott

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