Vehicle roll control system
AssigneeKelsey Hayes
InventorBlaise J. Ganzel
Life of this patent
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Abstract
A passive system is disclosed for controlling the roll of a motor vehicle. The system comprises an actuator connected between an unsprung portion of the vehicle and a sprung portion of the vehicle, first and second pressure control valves, and first and second check valves. The first pressure control valve is in communication with a first port of the actuator and has a first position where flow away from the first port is prevented up to a predetermined pressure. The first check valve is in parallel with the first pressure control valve. The second pressure control valve is in communication with a second port of the actuator and has a first position where flow away from the second port is prevented up to a predetermined pressure. The second check valve is in parallel with the second pressure control valve.
Claims10
A semi-active system for controlling the roll of a motor vehicle, the system comprising:
- an accumulator;
- an actuator connected between an unsprung portion of the vehicle and a sprung portion of the vehicle, the actuator having first and second ports;
- a first check valve in communication with the accumulator and the first port of the actuator preventing flow from the first port to the accumulator;
- a second check valve in communication with the accumulator and the second port of the actuator preventing flow from the second port to the accumulator;
- a first pressure control valve in parallel with the first check valve and having a first position where flow from the first port to the accumulator is prevented up to a predetermined pressure so that the first pressure control valve and the first check valve completely isolate the first port from the accumulator at a pressure less than the predetermined pressure;
- and
- a second pressure control valve in parallel with the second check valve and having a first position where flow from the second port to the accumulator is prevented up to a predetermined pressure so that the second pressure control valve and the second check valve completely isolate the second port from the accumulator at a pressure less than the predetermined pressure.
A system for controlling the roll of a motor vehicle, the system comprising:
- an anti-roll bar;
- an actuator connected between the anti-roll bar and an unsprung portion of the vehicle, the actuator having first and second ports;
- an accumulator;
- a first check valve in communication with the accumulator and the first port of the actuator preventing flow from the first port to the accumulator;
- a second check valve in communication with the accumulator and the second port of the actuator preventing flow from the second port to the accumulator;
- a first pressure control valve in parallel with the first check valve and having a first position where flow from the first port to the accumulator is prevented up to a predetermined pressure so that the first pressure control valve and the first check valve completely isolate the first port from the accumulator at a pressure less than the predetermined pressure;
- and
- a second pressure control valve in parallel with the second check valve and having a first position where flow from the second port to the accumulator is prevented up to a predetermined pressure so that the second pressure control valve and the second check valve completely isolate the second port from the accumulator at a pressure less than the predetermined pressure.
Dependencies are inferred from the claim text.