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Hydraulically damping rubber bearing engine mount

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TLDR
In this article, a hydraulically damping rubber bearing engine mount for motor vehicles is described, where a diaphragm is clamped fluidtightly in the pressure chamber and is loaded on the one side by the damping fluid and on the other side by compressed air which can be fed in from outside.
Abstract
The invention relates to a hydraulically damping rubber bearing engine mount for motor vehicles, having two end walls lying opposite one another in the axial direction and two chambers which are designed as a pressure and an auxiliary chamber and which contain a damping fluid and are connected to one another by a restricted orifice. An annular, rubber-elastic spring element adjoins the pressure chamber and is secured on an end wall. A compensating chamber adjoins the auxiliary chamber and is separated from the latter by a bellows. The damping characteristics of the rubber bearing are alterable by intervention from outside. In order to be able to alter the damping effect of the rubber bearing continuously right up to complete cancellation, a diaphragm is clamped fluid-tightly in the pressure chamber and is loaded on the one side by the damping fluid and on the other side by compressed air which can be fed in from outside. When the diaphragm is loaded by compressed air, an air chamber is formed between the diaphragm and the spring element with the diaphragm lifting off partially or completely from the spring element in response to the amount of compressed air fed from the outside in accordance with a control signal proportional to the desired vibrational characteristics of the vehicle.

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Citations
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PatentDOI

Vibration isolating apparatus

TL;DR: In this paper, the electric field applied to the electrorheological fluid undergoes a change as the amount of electric current supplied to the electrode plates is changed, thereby changing the viscosity of the fluid in the orifice passage.
Patent

Fluid-filled elastic mount having two differently tuned orifices selectively utilized for damping or isolating vibrations in different frequency ranges

TL;DR: In this article, a fluid-filled elastic mount including a first support structure and a second support structure which are spaced from each other in a load-receiving direction, an elastic body for elastically connecting these structures, and a partition structure supported by the second support structures is presented.
Patent

Fluid-filled elastic mount having two orifice passages one of which is selectively opened and closed by means of vacuum pressure

TL;DR: In this paper, a fluid-filled elastic mount is disclosed which includes a first and a second support member, an elastic body for interconnecting the support members and partially defining a pressure-receiving chamber, and a partition structure which cooperates with the first and second flexible diaphragm to define a first-and second equilibrium chambers.
Patent

Hydro-elastic engine mount

TL;DR: In this paper, a decoupling unit within one of the hydraulic chambers for coupling and coupling the damping action of the engine mount in response to varying driving conditions and engine performance is presented.
PatentDOI

Fluid-filled elastic mount having two orifices passages one of which is selectively opened and closed by means of vacuum pressure

TL;DR: In this article, a fluid-filled elastic mount is disclosed which includes a first and a second support member, an elastic body for interconnecting the support members and partially defining a pressure-receiving chamber, and a partition structure which cooperates with a first-and a second flexible diaphragm to define first and second equilibrium chambers.
References
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PatentDOI

Vibration isolating apparatus

TL;DR: In this paper, the electric field applied to the electrorheological fluid undergoes a change as the amount of electric current supplied to the electrode plates is changed, thereby changing the viscosity of the fluid in the orifice passage.
Patent

Hydraulic engine mount

TL;DR: In this article, a hydraulic engine mount is provided, the dynamic characteristics of which may be varied in response to engine performance parameters, and a core for attachment to an engine and a base for mounting to a frame, the core and the base being connected to each other by an elastic member.
PatentDOI

Hydraulically damped resilient mounting

TL;DR: In this paper, the damping fluid is accommodated between two flexible diaphragms that are subjected to pressure differentials which are produced randomly or are controlled by a computer.
Patent

Adjustable engine mount

TL;DR: In this article, an adjustable engine mount for shielding a vehicle body from oscillations of a drive unit is presented, 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.
Patent

Pneumatic spring for motor vehicles

TL;DR: A pneumatic spring for motor vehicles is described in this article, which includes two supports as well as closed spring volumes and two spring surfaces of different sizes which surfaces are subjected to pressure in opposite directions and which are variable as a function of road clearance.