Vehicle suspension system
First Claim
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1. A method of controlling roll stiffness and roll moment distribution of a suspension system of a vehicle, the suspension system including:
- front and rear vehicle support means for supporting the vehicle and any given load carried by the vehicle, the given load having its centre of mass at a load position, andat least one roll moment reaction means providing a variable roll stiffness for the vehicle suspension system, the at least one roll moment reaction means including at least one cylinder and two opposing fluid chambers;
the method including;
controlling pressures in the two opposing fluid chambers to set roll moment distribution of the suspension system and set roll stiffness of the at least one roll moment reaction means in dependence on the given load carried by at least the rear or front of the vehicle such that once set, the roll moment and variable roll stiffness is fixed for the given load and load position.
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Abstract
A method of controlling the roll stiffness and roll moment distribution of a vehicle suspension system of a vehicle, the vehicle suspension system including front and rear vehicle support means for supporting the vehicle and any load carried by the vehicle, and at least one roll moment reaction means for providing a variable roll stiffness for the vehicle suspension system;
The method including the step of adjusting the roll stiffness and the roll moment distribution of the vehicle suspension system in dependence on the load carried by at least a rear or front of the vehicle.
33 Citations
36 Claims
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1. A method of controlling roll stiffness and roll moment distribution of a suspension system of a vehicle, the suspension system including:
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front and rear vehicle support means for supporting the vehicle and any given load carried by the vehicle, the given load having its centre of mass at a load position, and at least one roll moment reaction means providing a variable roll stiffness for the vehicle suspension system, the at least one roll moment reaction means including at least one cylinder and two opposing fluid chambers; the method including; controlling pressures in the two opposing fluid chambers to set roll moment distribution of the suspension system and set roll stiffness of the at least one roll moment reaction means in dependence on the given load carried by at least the rear or front of the vehicle such that once set, the roll moment and variable roll stiffness is fixed for the given load and load position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A suspension system for a vehicle having a frame, the suspension system including rear and front vehicle support means for supporting the vehicle and any given load carried by the vehicle, the given load having its centre of mass at a load position;
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at least one roll moment reaction means for providing a variable roll stiffness for the suspension system, the at least one roll moment reaction means including at least one cylinder and two opposing pressure chambers, the at least one cylinder connected to the frame of the vehicle;
whereinthe at least one cylinder and two opposing pressure chambers transmits roll force, and the roll stiffness and the roll moment distribution provided by the suspension system is set in dependence on the given load carried by at least a rear or front of the vehicle such that once set, the roll moment distribution and variable roll stiffness is fixed for the given load and load position. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A method of controlling roll stiffness and roll moment distribution of a passive suspension system of a vehicle, the passive suspension system including:
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front and rear vehicle support means for supporting the vehicle and any given load carried by the vehicle, the given load having its center of mass at a load position, and at least one roll moment reaction means providing a variable roll stiffness for the passive suspension system, the at least one roll moment reaction means including at least one cylinder and two opposing pressure chambers; the method including controlling pressures in the opposing fluid chambers to set roll moment distribution of the passive suspension system and set roll stiffness of the at least one roll moment reaction means in dependence on the given load carried by at least the rear or front of the vehicle such that once set, the roll moment and variable roll stiffness is fixed for the given load and load position.
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36. A passive suspension system for a vehicle having a frame, the passive suspension system including rear and front vehicle support means for supporting the vehicle and any given load carried by the vehicle, the given load having its center of mass at a load position;
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at least one roll moment reaction means for providing a variable roll stiffness for the passive suspension system, the at least one roll moment reaction means including at least one cylinder and two opposing pressure chambers the at least one cylinder connected to the frame of the vehicle;
whereinthe at least one cylinder and two opposing pressure chambers transmits roll force, and the roll stiffness and the roll moment distribution provided by the passive suspension system are set in dependence on the given load carried by at least a rear or front of the vehicle such that once set, the roll moment distribution and variable roll stiffness are fixed for the given load and load position.
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Specification