Hydraulic anti-roll system

• US 7,871,082 B2
• Filed: 11/09/2006
• Issued: 01/18/2011
• Est. Priority Date: 11/09/2005
• Status: Expired due to Fees

• Current Assignee: Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno
• Original Assignee: Nederlandse Organisatie Voor Toegepast-Natuurwetenschaffelijk Onderzoek Tno
• Inventors: Zuurbier, Jozef, Van Der Knaap, Albertus Clemens Maria
• Primary Examiner(s): Dickson; Paul N.
• Assistant Examiner(s): Spisich; George D.
• Application Number:
  US12/093,006
• Publication Number:
  US 20090115147A1
• Time in Patent Office: 1,531 Days
• Field of Search: 280/5.511, 280/5.506, 280/5.507, 280/5.508, 280/5.509, 280/124.106, 280/124.107, 280/124.157, 280/124.16, 280/124.161
• US Class Current: 280/5.508
• CPC Class Codes: B60G 21/0555 including an actuator inducing vehicle roll
• CPC Class Codes: B60G 2202/413 Hydraulic actuator

Abstract

Anti-roll system especially for a vehicle, comprising system control means, a tank (4) and a pump (3) for a hydraulic fluid, and two or more stabilizers, each stabilizer comprising an actuator (5, 6) which is arranged to control the relevant stabilizer'"'"'s moment in dependency of the hydraulic pressure at the actuator'"'"'s terminals. Each actuator has either one or both of its terminals (A, B) connected to a first terminal (I) of a pressure control module (8) which has a second terminal (II) connected to the tank'"'"'s inlet side and a third terminal (III) to the pump'"'"'s outlet side. The control means and each control module are arranged to supply a fluid pressure at its first terminal under control of said control means. The pressure control modules (8) may comprise a series connection of two pressure control valves (1, 2) e.g. pressure relief or limitation valves. As an alternative the pressure control modules (8) comprise a three-way pressure control valve (9), e.g. a three-way pressure reduction valve. To minimize energy consumption of the pump during moderate cornering and straight line driving a pressure control valve is provided in parallel to the three-way pressure control valve.

Claims

1. An anti-roll system especially for a vehicle, comprising:

system control means, a tank and a pump for a hydraulic fluid, the tank and the pump each having a fluid inlet and a fluid outlet, and two or more stabilizers, each one of the two or more stabilizers comprising an actuator which is arranged to control a respective stabilizer'"'"'s stabilizing action in dependency of a hydraulic pressure supplied to terminals of the actuators, each actuator of said two or more stabilizers being communicatively connected to at least a first terminal of a respective pressure control module, each pressure control module comprising a second terminal and a third terminal communicatively connected in parallel relative to a pump pressure provided between the fluid inlet and fluid outlet of the pump, said system control means and each pressure control module being arranged to supply a fluid pressure at its first terminal under control of said system control means, wherein one or more of said pressure control modules comprises a series connection of two pressure control valves, said first terminal corresponding with a common series connection point, and said second terminal and said third terminal corresponding with remaining connections of the series connection of two pressure control valves.

2. The anti-roll system according to claim 1, wherein said series connection of two pressure control valves comprises pressure relief or limitation valves.

3. An anti-roll system especially for a vehicle, comprising:

system control means, a tank and a pump for a hydraulic fluid, the tank and the pump each having a fluid inlet and a fluid outlet, and two or more stabilizers, each one of the two or more stabilizers comprising an actuator which is arranged to control a respective stabilizer'"'"'s stabilizing action in dependency of a hydraulic pressure supplied to the terminals of the actuators, each actuator of said two or more stabilizers being communicatively connected to at least a first terminal of a respective pressure control module, each pressure control module comprising a second terminal and a third terminal communicatively connected in parallel relative to a pump pressure provided between the fluid inlet and fluid outlet of the pump, said system control means and each pressure control module being arranged to supply a fluid pressure at its first terminal under control of said system control means,

wherein each actuator has a first and a second terminal connected, respectively, to a first terminal of one of a set of first and second pressure control modules, and

wherein one or more of said pressure control modules comprises a series connection of two pressure control valves, said first terminal corresponding with a common series connection point, and said second terminal and said third terminal corresponding with remaining connections of the series connection of two pressure control valves.

4. Anti-roll system according to claim 3, wherein said series connection of two pressure control valves comprises pressure relief or limitation valves.