Rubber elastic engine mounts or supports with hydraulic damping, especially for engine suspensions in motor vehicles

US4288063A · kind A · utility

Assignee

• Boge GmbH · DE

Inventors

• Heinz Brenner · Adenau, DE
• Arno Hamaekers · Gorxheimertal, DE

Key dates

• Filing date: May 3, 1979
• Grant date: Sep 8, 1981
• Expiry date: May 3, 1999

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F13/24
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Elastic rubber engine mounts with hydraulic damping are provided, especially for engine suspensions in motor vehicles. The mounts comprise two separated liquid-filled chambers, defined in part by elastic rubber-like peripheral walls adheringly connected with end walls and with a centrally disposed supporting element for connection to an engine supporting frame. The liquid chambers are separated by an elastic rubber-like partition connected with the supporting element, and flow connection between the two chambers is provided by perforations or choke openings in the partition. The rigid end walls of the two chambers are rigidly interconnected. Arrangements are provided for minimizing or avoiding hydraulic damping of oscillations of low amplitude and high frequency, while providing hydraulic damping for oscillations of large amplitude and low frequency. This is achieved by limited compensation of volume changes in the chambers, through either axially reciprocable annular members disposed in the partition and axially movable relative to the support element, or by flexible wall parts in the rigid end walls. The flexible wall parts may be in the form of diaphragms, and the diaphragms may…