Anti-roll adjustable hydro-pneumatic suspension hydraulic system

Abstract

The invention discloses an anti-roll adjustable hydro-pneumatic suspension hydraulic system which comprises a suspension hydraulic control unit and an oil pipeline which are arranged on each axle, each suspension hydraulic control unit comprises two groups of suspension control mechanisms on the left side and the right side respectively, and each suspension control mechanism comprises an oil cylinder, a valve piece, a pipeline and an energy accumulator; a rod cavity of an oil cylinder on one side of each suspension hydraulic control unit is communicated with a rodless cavity oil way on the other side of the same unit through a valve piece and a pipeline, and a rodless cavity of each oil cylinder is connected with an energy accumulator of the suspension control mechanism in the same set through a valve piece. The stability of speed control when the suspension oil cylinder bears large load and descends is achieved; meanwhile, the suspension oil cylinder can bear the load borne by a suspension system when a hydraulic system does not act, the hydraulic system is prevented from being overloaded, so that the safety of the hydraulic system and the whole vehicle is protected; vehicle posture adjustment and speed adjustment such as vehicle body lifting, front-back pitching, left-right inclining and vehicle body leveling can be achieved.

Description

technical field [0001] The invention relates to the technical field of automobile suspension, in particular to an anti-rolling adjustable oil-pneumatic suspension hydraulic system. Background technique [0002] The use of oil-pneumatic suspension is an important way to improve the ride comfort, passability and fuel economy of the car. Good ride comfort generally requires oil-pneumatic springs with low stiffness, but this will cause the vehicle body to tilt sharply when driving on a curve. On the one hand, it makes the occupants feel uncomfortable, and on the other hand, it changes the steering characteristics of the car, thereby reducing the driving stability of the car. Generally, the suspension increases the roll angle stiffness by adding a special lateral stabilizer (such as a stabilizer bar). However, this method makes the structural design of the suspension system more complicated. [0003] China Invention Patent Authorization Announcement No. CN102059929B (Patent Appl...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an anti-rolling adjustable oil-pneumatic suspension hydraulic system, which solves the stability problem of the speed control of the suspension cylinder when it bears a heavy load and descends, and at the same time ensures that the hydraulic system can withstand the vehicle suspension when the hydraulic system is not in action. The load borne by the rack system prevents the hydraulic system from overloading, thus protecting the hydraulic system and the vehicle safety

Images