Proportional control valve

US8151952B2 · kind B2 · utility

Assignee

• Continental Teves AG & Co. OHG · DE

Inventors

• Axel Nieder-Vahrenholz · Eschborn, DE
• Christian Courth · Frankfurt, DE
• Fabian Wey · Karlsruhe, DE
• Jochen Klein · Darmstadt, DE
• Jan Hoffmann · Rosbach, DE
• Harald Biller · Eschborn, DE
• Marcus Forche · Frankfurt, DE
• René Lenz · Frankfurt am Main, DE

Key dates

• Filing date: Oct 29, 2007
• Grant date: Apr 10, 2012
• Expiry date: Aug 19, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/7761
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a proportional control valve for the variable hydraulic adjustment of the damping force of a shock absorber, for which purpose the proportional control valve has a throttle function which can be set by varying the strength I of the electric current. The invention provides that on the basis of an instantaneous level of the electrical current Iist the proportional control valve is first closed by increasing the current to a maximum current strength Imax for a short time period toverdrive in order to change the damping force F, and the proportional control valve is then opened again by reducing the current strength I to a defined average current strength I in which the proportional valve assumes an intermediate position which results in a volume flow Q which corresponds to the desired change in the damping force F.