Damper element

US4729360A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Siegfried Fehrenbach · Markgröningen, DE
• Wolfgang Golderer · Mühlacker, DE
• Kurt Herbst · Burgstetten, DE
• Erwin Krimmer · Plüderhausen, DE
• Paul M. Schmid · Camarillo, US
• Wilhelm Sorg · Markgröningen, DE
• Eberhard Utz · Stuttgart, DE

Key dates

• Filing date: Sep 16, 1986
• Grant date: Mar 8, 1988
• Expiry date: Sep 16, 2006

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M37/0047
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A damper element is proposed which serves to damp a pulsating fluid flow, in particular to smooth out and reduce pressure fluctuations arising in fuel supply systems for internal combustion engines in motor vehicles. The damper element includes a base and a cap, which are welded to one another and a damper diaphragm is clamped between these elements. The damper diaphragm, in order to prevent diffusion of the fluid into a damper chamber of the cap, is embodied either as a polyimide diaphragm or as a combination of a fabric diaphragm and a polyimide diaphragm. The clamping area of the cap is embodied as inclined slightly toward the damper diaphragm by an angle .alpha., so that a long-term fastening and sealing of the damper diaphragm is assured.