Patent
Variable hydraulic-elastomeric mount assembly
Eric D. Carlson,Jack E. Smith,Richard A. Muzechuk +2 more
- 10 Nov 1986
35
TL;DR: In this article, a hydraulic mount assembly is disclosed having a partition including a hydraulic damping decoupler between two hydraulic chambers and a pneumatic bladder is positioned to exert external pressure against the diaphragm in order to change the damping characteristics of the mount.
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Abstract: A hydraulic mount assembly is disclosed having a partition including a hydraulic damping decoupler between two hydraulic chambers. One chamber is formed by an elastomeric member and the other by a resilient diaphragm. During dynamic loading of the mount, fluid passes between the two chambers of the mount causing expansion and contraction of the diaphragm. A pneumatic bladder is positioned to exert external pressure against the diaphragm in order to change the damping characteristics of the mount. As the bladder is expanded, the diaphragm is stiffened and the fluid flow between the two chambers in the hydraulic mount is restricted. When the bladder is deflated, the pressure against the diaphragm is reduced or effectively removed thereby restoring full freedom of movement of the fluid in the hydraulic mount. By actively controlling the diaphragm expansion in this manner, the dynamic characteristics of the mount are varied. A control circuit with on-board transducers is provided to monitor vehicle operating and road response conditions and modulate the pressure to the bladder for maximum damping effect. The on-board transducers sense selected parameters to indicate unusual conditions for which modulation is required, such as rough engine operation, engine lugging, rough road conditions, sudden turning and/or rapid acceleration/deceleration.
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Citations
Hydraulic engine mounts: a survey
TL;DR: The dual behavior hydraulic engine mounts were introduced around 1980 and passed through many analytic and technical improvements as discussed by the authors, and the technical problems and methods of remedy were discussed in the article by the authors.
50
Patent
Adjustable magneto-rheological fluid device
Michael G. O'Callaghan
- 20 Sep 1996
TL;DR: An adjustable magneto-rheological fluid device includes a movable piston adjacent a first chamber containing a first hydraulic fluid for moving the piston in a first direction as mentioned in this paper, and a second chamber, containing a second hydraulic fluid, spaced apart from the first chamber on the opposite side of the piston.
41
Patent
Hydraulic engine mount with self-pumping air bladder
John F. Hoying,Stanley E. Smith +1 more
- 26 Sep 1988
TL;DR: In this paper, a hydraulic mount assembly includes a pair of mounting members connected to each other through a hollow elastomeric body, closed by a resilient diaphragm so as to form a cavity for hydraulic damping fluid.
41
Patent
Air bladder controlled hydraulic engine mount
Stanley E. Smith
- 19 Jan 1989
TL;DR: In this article, a hydraulic mount assembly is disclosed having a partition forming two hydraulic chambers and including a damping decoupler, and an expandable pneumatic bladder is mounted within the primary chamber.
37
Patent
Liquid-sealing type vibration isolating apparatus
Norihiro Yamada,Yoshiki Shimoda,Takashi Maeno,Shigeki Takeo,Osamu Nakagaki,Goto Masanao,Tetsuya Tsuiki,Suzuki Tatsuo,Tetsuo Asano +8 more
- 03 Mar 1998
TL;DR: In this paper, a liquid-sealing type vibration isolating mechanism composed of a main chamber having a chamber wall formed by a portion of the insulator, and charged therein with liquid is presented.
34
References
Patent
Vibration isolating device sealed with liquid
Ozawa Isao
- 25 Dec 1984
TL;DR: In this article, a vertically movable case 7 is arranged between the first fluid chamber A and the second fluid chamber B forming their chamber walls by elastic material walls 1, 2 of rubber in large thickness and a movable separator plate 8 movable by a prescribed distance is provided inside the case 7 while the movement of said plate is controlled when an electromagnetic coil 5 acts to attract the case.
12
Patent
Two-chamber engine mount with hydraulic damping
Volker Dr Haertel,Richard P Thorn +1 more
- 21 Dec 1984
TL;DR: In this paper, the authors proposed a method to provide continuous variation of the stiffness and damping of a hydraulically damped engine mount having a working chamber and a compensating chamber.
10
Patent
Mount filled with fluid
Katsuyoshi Arai,Tetsuya Koike,Morita Isamu +2 more
- 21 Feb 1984
TL;DR: In this article, a cylindrical communication part in a partitioning plate, which divides a fluid chamber in the mount into two chambers, and supporting a movable member in this communication part to its intermediate position by a spring material, is proposed.
9
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