Motor vehicles – Surface effect vehicles – Dynamic seal or fluid curtain
Patent
1986-10-15
1988-09-20
Love, John J.
Motor vehicles
Surface effect vehicles
Dynamic seal or fluid curtain
180 794, 180136, 180144, 280459, B62D 506
Patent
active
047718510
ABSTRACT:
The present invention is a steering system for an articulated vehicle which has at least one axle mounted for wagon-wheel steering with respect to the vehicle, a hydraulic actuator for pivoting the axle with respect to the vehicle and a pair of hydraulic actuators for causing articulation of the vehicle. The improved steering system includes sensors for providing signals dependent on the degree of axle pivot relative to the vehicle, the degree of articulation of the vehicle and the desired direction of the vehicle travel. These signals are detected by a controller which in turn controls actuation of the axle and articulation hydraulic actuators. The actuators are operated in a sequential manner so that small directional changes of the vehicle are achieved solely through pivoting of the axle. Operation of the axle and articulation actuators are controlled through manipulation of a hydraulic fluid diverting valve, with the timing and duration of valve actuation being controlled by the controller as a function of various dynamic turning parameters of the vehicle and the response time of the valve.
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Eaton Corporation, "Char-Lynn Power Steering", Catalog No. 11-872, (Sep. 1984), pp. 1-31.
Batcheller Barry D.
Nystuen Paul A.
J. I. Case Company
Love John J.
Watts Charles R.
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