Filter device

US8956531B2 · kind B2 · utility

Assignee

• Mahle International GmbH · DE

Inventors

• Alfred Gröner · Winnweiler, DE
• Gerhard Steiner · Neuenstein, DE

Key dates

• Filing date: Aug 11, 2010
• Grant date: Feb 17, 2015
• Expiry date: Jan 24, 2032

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K17/06
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A filter device may include a filter housing having at least one filter element configured to separate the filter housing into a raw side and a clean side. A bypass valve may control a bypass for circumventing the at least one filter element, wherein the bypass valve may have a valve member for controlling a bypass opening connecting the clean side of a coupling chamber of the bypass valve with the raw side. The valve member may be configured to close the bypass opening via a pretension generated by a closing spring. The bypass valve may be an actuating device for changing the pretension acting on the valve member and the actuating device may be coupled with at least one control chamber and configured to set the pretension acting on the valve member based at least in part on a control pressure of the control chamber.