Controllable vibration damper
AssigneesThyssenkrupp Bilstein GmbH, thyssenkrupp AG
InventorsJuergen Schneider, Michael Sturm
Life of this patent
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Abstract
A controllable vibration damper includes a damping force control system, having a damper housing tube. The damper is at least partially filled with a damping medium. A damping valve for damping force control is arranged on and fluidly connected to the damper housing tube. The damper housing tube has an inner tube, which is inserted into the tubular damper housing via a bottom valve element. The vibration damper has a piston rod, which can be moved longitudinally in the inner tube and has a working piston.
Claims16
A controllable vibration damper having a damping force control system, the controllable vibration damper comprising:
- a tubular damper housing which is at least partially filled with damping medium, and a damping valve element for damping force control, which is arranged on and fluidly connected to the tubular damper housing;
- an inner tube, which is inserted into the tubular damper housing via a bottom valve element;
- a piston rod, which can be moved longitudinally in the inner tube and has a working piston;
- wherein the bottom valve element divides the tubular damper housing into a low-pressure working chamber and a high-pressure working chamber, which is acted upon by means of the working piston;
- and
- a separating piston seated in the tubular damper housing that separates the damping medium in the low-pressure working chamber from a gas volume held in the tubular damper housing;
- wherein an inlet opening of the damping valve element is fluidly connected to the high-pressure working chamber, and an outlet opening of the damping valve element is fluidly connected to the low-pressure working chamber, such that the damping valve element is connected in parallel with the working piston;
- wherein the damping valve element can be closed during a rebound stage such that the damping medium can be forced to flow through the working piston and through the bottom valve element without flowing through the damping valve element;
- wherein the damping valve element can be opened during the rebound stage such that the damping medium can be forced to flow through the working piston, through the bottom valve element, and through the damping valve element.
A controllable vibration damper having a damping force control system, the controllable vibration damper comprising:
- a tubular damper housing which is at least partially filled with damping medium, and a damping valve element for damping force control, which is arranged on and fluidly connected to the tubular damper housing;
- an inner tube, which is inserted into the tubular damper housing via a bottom valve element;
- a piston rod, which can be moved longitudinally in the inner tube and has a working piston;
- wherein the bottom valve element divides the tubular damper housing into a low-pressure working chamber and a high-pressure working chamber, which is acted upon by means of the working piston;
- and
- a separating piston seated in the tubular damper housing that separates the damping medium in the low-pressure working chamber from a gas volume held in the tubular damper housing;
- wherein an inlet opening of the damping valve element is fluidly connected to the high-pressure working chamber, and an outlet opening of the damping valve element is fluidly connected to the low-pressure working chamber, such that the damping valve element is connected in parallel with the working piston;
- wherein the damping valve element can be closed during a compression stage such that the damping medium can be forced to flow through the working piston and through the bottom valve element without flowing through the damping valve element;
- wherein the damping valve element can be opened during the compression stage such that the damping medium can be forced to flow through the working piston, through the bottom valve element, and through the damping valve element.
Dependencies are inferred from the claim text.