Adjustable engine mount

US4802648A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Heinz Decker · Leinfelden, DE
• Ortwin Engfer · Stuttgart, DE
• Walter Kuhle · Neckarwestheim, DE

Key dates

• Filing date: Feb 8, 1988
• Grant date: Feb 7, 1989
• Expiry date: Feb 8, 2008

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F13/262
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An adjustable engine mount for shielding a vehicle body from oscillations of a drive unit, in which the magnitude of the damping and of the spring rate is controlled as a function of control signals of an electronic control unit. For adjusting the damping, the engine mount has an actuating device, by means of which the size of a throttle cross section between a first chamber and a second chamber of a damping chamber can be adjusted. For adjusting the spring rate, the engine mount has an air cushion which functions like a pneumatic spring element, which can be inflated and vented via a valve device. The electronic control unit has inputs for various input signals, which describe parameters that influence the motion of the drive unit relative to the vehicle body. The electronic control unit controls the damping and the spring rate of the engine mount as a function of the magnitude of at least one of the input signals.