Hydraulically damped engine mount

US5102105A · kind A · utility

Assignee

• Firma Carl Freudenberg · DE

Inventors

• Arno Hamaekers · Gorxheimertal, DE
• Werner Hettler · Mannheim, DE
• Arnold Simuttis · Bad Kreuznach, DE

Key dates

• Filing date: Nov 15, 1990
• Grant date: Apr 7, 1992
• Expiry date: Nov 15, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S180/902
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A hydraulically damped engine mount comprises liquid-filled working and equalization chambers 1, 2 which are separated by a resilient partition wall 3 and connected by a damping opening 4. The axially opposing working chamber 1 and the equalization chamber 2 are bounded by essentially non-deformable pistons, the latter being connected to a centrally disposed, annular fitting by means of an liquid-impermeable and elastically deformable annular body. These pistons are rigidly joined to one another by means of a connecting rod 7. The piston 9 bounding the equalization chamber 2 has a piston surface which is at least as large as the piston surface of the partition wall 3. The annular body corresponding to this piston is a first rolling membrane 6 which is curved in the axial direction toward the outside and the partition wall 3 is a second rolling membrane which is curved in the axial direction to extend into the working chamber 1. At its inside, this second rolling membrane is affixed liquid-tight to the connecting rod 7.