STEERING HYDRAULIC DRIVE BOOSTER AND VEHICLE EQUIPPED THEREWITH Russian patent published in 2012 - IPC B62D5/06 

FIELD: transport.

SUBSTANCE: proposed device comprises one input for control command feed and one hydraulic fluid output. Said output is intended for feeding hydraulic fluid to hydraulic cylinder to drive running gear coupled with drive cylinder. Said device comprises pump, one first hydraulic fluid line and one second line, and distribution valve. The latter comprises first and second fluid feed inlets communicated with pump via first and second lines, and one extra inlet communicated with outlet. Valve has open flow area between extra inlet and first or second inlet that varies subject to input command. Said open flow area on way from pump to first inlet is restricted by appliance intended to this end. For running gear with dynamics wherein first order corresponds to first asymmetric mode of running gear with definite intrinsic frequency, said restrictor is configured to make input pressure transfer function with zero frequency at input relative to command signal, said frequency being lower than intrinsic frequency of running gear first asymmetric mode. Vehicle comprises steering wheel coupled via with steering column with toothed rack engaged with running gear. Said rack is engaged with one drive hydraulic cylinder. Vehicle incorporates aforesaid booster. Appliance is used to feed control command to hydraulic circuit input.

EFFECT: reduced vibrations in steering.

10 cl, 8 dwg