Abstract:
A magneto-rheological damping device comprises a core element capable of acting as a magnetic circuit which carries a magnetic flux, and a case element surrounding a portion of the core element. A passage exists between the case element and core element, and an amount of magneto-rheological fluid is positioned between the core element and case element to flow within the passage. A magnetic flux generator is positioned adjacent a portion of the core element and is operable to generate a magnetic flux which acts upon the magneto-rheological fluid in the passage to affect the flow of fluid in the passage. The core element comprises a plurality of stacked laminations, which form a series of individual magnetic poles with gaps therebetween. The magnetic flux generator is operable to generate a magnetic flux in the poles and case element and across the gaps to affect the fluid flow in the passage.
Abstract:
A vehicle suspension system comprising a damper having a lower mount end and an upper mount end and a spring having a lower end and an upper end positioned around the damper. The spring and the damper have a common central axis. An adjustment assembly is operably attached at the lower mount end of the damper and the lower end of the spring is operably attached to and supported by the adjustment assembly thereby allowing the position of the lower end of the spring to continuously vary along the central axis of the damper. The method comprising supporting a lower end of a spring positioned around a damper and moving the end of the spring for adjusting vehicle ride height.
Abstract:
The subject inventive steering damper assembly includes a rotor sleeve having open first and second ends and a drive plate disposed in the open second end. A core is co-axially disposed in the rotor sleeve closing the open first end of the rotor sleeve and defining a magnetic fluid chamber with the sleeve. A Magneto-Rheological fluid is disposed in the magnetic fluid chamber. The drive plate is flexible to provide manufacturing and operational tolerance, and is securely attached to the open second end of the rotor sleeve. Flexibility is derived from at least one aperture disposed in the drive plate. The aperture may be formed in a variety of shapes including elongated, round and oval shaped apertures.
Abstract:
An adjustable vehicle suspension strut configured to be arranged between a wheel assembly and a body of a vehicle, the adjustable strut including a tube. A piston is slidably carried in the tube on a piston rod. A coil is carried on the piston adjacent a first flow passageway in the piston to produce a magnetic field thereacross and a control valve is carried on the piston controlling fluid flow through a second flow passageway in the piston. The control valve is positioned at the distal end of the rod upstream of the first flow passageway.
Abstract:
The invention provides a damper assembly (10) comprising a housing (12) defining an inner chamber (22, 24) having a damping fluid disposed therein. A piston rod (14) is slidably retained by the housing (12), and at least partially extends into, the chamber (22, 24). A piston (18) is disposed at a first distal end (21) of the piston rod (14) and strokes inside the housing (12). The piston (18) defines a first chamber (22) and a second chamber (24) within the housing (12) and includes at least one aperture (26) for allowing damping fluid to flow between the first (22) and second (24) chambers. An actuator (30) is disposed within the piston (18) for varying the flow of damping fluid through the aperture (26) between the first (22) and second (24) chambers within the housing (12). The piston rod (14) includes an inner bore (16) that receives pressurized air from an external source for communicating pneumatic control signals to the actuator (30).
Abstract:
The invention provides a vehicle damper assembly including a housing including a fluid carried therein, a piston slidably carried in the housing, and a rod operably attached to the piston. The piston includes a curved portion positioned adjacent a housing inner surface. The invention further provides a vehicle damper assembly including housing means for carrying a fluid, piston means from reducing binding contact with the housing means, and rod means for moving the piston means. The invention further provides a method of reducing binding contact in a vehicle damper assembly. A longitudinal radius is determined for a piston based on a housing inner surface. The piston is formed with a curved portion based on the longitudinal radius. The curved portion is positioned adjacent the housing inner surface.
Abstract:
An adjustable vehicle suspension damper configured to be arranged between a wheel assembly and a body of a vehicle, the adjustable damper including a tube. A piston is slidably carried in the tube. A coil is carried on the piston adjacent a first flow passageway in the piston to produce a magnetic field thereacross and a control valve is carried on the piston controlling fluid flow through a second flow passageway in the piston.
Abstract:
A rotary damper for use in motor vehicle suspensions comprising a rotor disposed within damping fluid in a fluid chamber of a case to form fluid volumes, with valves for flow control and an accumulator for fluid fill variation and thermal expansion mounted internal to the rotor. A first check valve and first control valve mounted in a first flow passage within the rotor allow flow from second fluid volume to first fluid volume, but restrict flow from the first fluid volume to the second fluid volume. Similarly, a second check valve and a second control valve mounted in a second flow passage within the rotor allow flow from the first fluid volume to the second fluid volume, but restrict flow from the second fluid volume to the first fluid volume. Thus, the valves are configured to provide independent control of damping for each direction of rotation.
Abstract:
A vibration damper for a vehicle suspension system includes a pumping cylinder concentrically aligned inside a housing defining a pumping chamber having a piston stroking therein for reducing the level of vehicle vibration. An intermediate cylinder defines an intermediate chamber with the pumping cylinder and an outer chamber with the housing. Suspension fluid flows throughout each of the chambers. A valve is operably connected to an air supply of a suspension system having an air pressure relative to a mass loaded on the vehicle. The controls the distribution of fluid between the chambers relative to the pressure of the air supply and controls the amount of vibration damping inside the pumping chamber relative to the mass loaded on the vehicle.
Abstract:
A damper includes a piston that carries a relatively compact control valve for controlling fluid flow through the piston. The control valve provides a variable amount of damping by regulating damper fluid flow between the extension chamber and the compression chamber of the damper during extension and compression strokes. Pressure regulation across the piston is controlled through a flow path as determined by the control valve. The damping force of the damper varies depending upon the loading conditions of the vehicle. The control valve is air pressure actuated to adjust the damping force and control the flow of fluid in the flow path.