EP0039823A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Engine mounting for suspending engine relative to vehicle structure
Assignee: Nissan Motor Co Ltd
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Filing: 1981-04-28
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Granted: —
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Expires: 2001-04-28
Abstract
Abstract An engine mounting for suspending an engine relative to a vehicle structure. The engine mounting comprises a first armature for connection to the engine and a second armature for connection to the vehcile structure and a bellows interposed between the first and second armature to define therewith a closed enclosure. The closed enclosure is filled with pressurized gas. An inertia mass is mounted on the bellows. A mass of the inertia mass and an apparent spring constant of the bellows are selected such that the inertia mass vibrates in inverse phase relationship with the phase of vibration of the first armature when the engine operates within a vibration insulated domain.
Inventors
- 👤 Hirofumi Takei
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 13:52
CPC Classifications
F; F16; F16F; F16F13/00; F16F13/04; F16F13/06; F16F13/22; F16F7/00; F16F7/10; F16F7/104; F16F7/112; F16F9/00; F16F9/02; F16F9/04; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
An engine mounting for suspending an engine relative to a vehicle structure, comprising: a first armature for connection to the engine and a second armature for connection to the vehicle structure ; a bellows interposed between said first and second armature and defining therewith a closed enclosure; an'inertia mass mounted on said bellows to be movable with a part of said bellows; said closed enclosure being filled with pressurized gas; a mass of said inertia mass and an apparent spring constant of said bellows are selected such that said inertia mass vibrates in inverse phase relationship with the phase of vibration of said first armature when the engine operates within a vibration insulated domain.
Claim 2
Dependent Claim
114 words
An engine mounting for suspending an engine relative to a vehicle structure, comprising: a first armature for connection to the engine and a second armature for connection to the vehicle structure ; a bellows interposed between said first and second armature and defining therewith a closed enclosure; an'inertia mass mounted on said bellows to be movable with a part of said bellows; said closed enclosure being filled with pressurized gas; a mass of said inertia mass and an apparent spring constant of said bellows are selected such that said inertia mass vibrates in inverse phase relationship with the phase of vibration of said first armature when the engine operates within a vibration insulated domain.
Claim 3
Dependent Claim
29 words
An engine mounting as claimed in claim 1, further comprising partition wall means mounted on said bellows and defining an orifice and dividing said closed enclosure into two chambers.
Claim 4
Dependent Claim
128 words
An engine mounting as claimed in claim 1, wherein said bellows has a first hinge between said first armature and said inertia mass and a second hinge between said inertia mass and said second armature, and the thickness of each of said first and second hinges of said bellows is increased to constitute a stop which is compressed to resist a compression movement of said bellows, whereby, under the effect of low frequency vibrations falling within a vibration insulated domain, said stops are compressed to provide resistance to compression of said bellows, thus providing a high dynamic spring constant, while, under the effect of high frequency vibrations falling within the vibration insulated domain, said stops are left uncompressed, thus providing a low dynamic spring constant under these vibrations.
Claim 5
Dependent Claim
44 words
An engine mounting as claimed in any one of the preceding claims, wherein said inertia mass vibrates in the same phase relationship with the phase of vibration of said first armature under the effect of low freqeuency vibrations falling within the vibration restrained domain.
Claim 6
Dependent Claim
42 words
An engine mounting as claimed in any one of the preceding claims, wherein each of said first and second armature has an annular stop rubber attached thereto which abuts with said inertia mass to limit excessive axial displacement of said inertia mass.
Claim 7
Dependent Claim
46 words
An engine mounting as claimed in claim 5, wherein said first and second armatures have sleeve portions, respectively, and said stop rubbers have portions extending to cover inner walls of said sleeves, respectively, to abut said inertia mass to limit radial displacement of said inertia mass.
Claim 8
Dependent Claim
46 words
An engine mounting as claimed in claim 2, wherein said bellows has a waist portion between said first and second hinges and said inertia mass has a ring section and a radially inwardly extending portion fitted into and received in said waist portion of said bellows.
References Cited (Backward Citations)
No citation records indexed.
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