Vehicle suspension system
First Claim
1. A suspension system comprising:
- hydraulic suspension strut means for resiliently supporting and damping movement between suspended and unsuspended parts of a mass or energy system;
flow means for providing hydraulic fluid flow to/from said strut means; and
accumulator means for pressurizing said hydraulic fluid, a gas over hydraulic accumulator located at said suspension strut means and connected with said flow means, said accumulator means including a system accumulator connected with said flow means to pressurize said system to resiliently support said suspended parts in the static condition and to pressurize said flow means to reduce the pressure thereacross.
1 Assignment
0 Petitions
Accused Products
Abstract
A vehicle suspension system that resiliently supports a suspended portion of a vehicle on a non-suspended portion while at the same time preventing pitch and roll that are caused by acceleration, deceleration and turning. The system includes a linear actuator such as a single-acting hydraulic cylinder interconnected through a control system with variable displacement pumps/motors and an accumulator. The accumulator is charged to apply enough pressure in the hydraulic system to support the suspended portion of the vehicle in static condition. The variable displacement pumps along with the controls sense the pressure changes occurring in the linear actuators to prevent movement thereby maintaining a normal, level position of the vehicle.
-
Citations
8 Claims
-
1. A suspension system comprising:
-
hydraulic suspension strut means for resiliently supporting and damping movement between suspended and unsuspended parts of a mass or energy system; flow means for providing hydraulic fluid flow to/from said strut means; and accumulator means for pressurizing said hydraulic fluid, a gas over hydraulic accumulator located at said suspension strut means and connected with said flow means, said accumulator means including a system accumulator connected with said flow means to pressurize said system to resiliently support said suspended parts in the static condition and to pressurize said flow means to reduce the pressure thereacross.
-
-
2. A suspension system comprising:
-
hydraulic suspension strut means for resiliently supporting and damping movement between suspended and unsuspended parts of a mass or energy system; flow means for providing hydraulic fluid flow to/from said strut means, said flow means including a variable displacement pump/motor, said pump/motor permitting reverse flow therethrough to allow fluid flow from said strut means when said strut is to be compressed, permitting no flow, and permitting forward flow to said strut means when said strut is to be extended; and accumulator means for pressurizing said hydraulic fluid.
-
-
3. A suspension system for a vehicle that includes a chassis and a plurality of vehicle support ,member, said system including:
-
hydraulic suspension strut means for resiliently supporting and damping the movement between the chassis and the support members; flow means for providing hydraulic fluid flow to and from each of said strut means; and accumulator means for pressurizing said hydraulic fluid, a gas over hydraulic accumulator located at said suspension strut means and connected with said flow means, said accumulator means including a system accumulator connected with said flow means to perssurize said system to resiliently support said suspended parts in the static condition and to pressurize said flow means to reduce the pressure thereacross when said system is in operation. - View Dependent Claims (4, 5, 6)
-
-
7. A suspension system for a vehicle that includes a chassis and a plurality of vehicle support members, said system including:
-
hydraulic suspension strut means for resiliently supporting and damping the movement between the chassis and the support members; flow means for providing hydraulic fluid to and from each of said strut means, said flow means including a variable displacement pump/motor, said pump/motor permitting reverse flow therethrough to allow fluid flow from said strut means when said strut is to be compressed, permitting no flow, and permitting forward flow to said strut means when said strut is to be extended; and accumulator means for pressurizing said hydraulic fluid. - View Dependent Claims (8)
-
Specification