US3757796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for regulating the flow of fuel injected into an internal combustion engine
Assignee: Peugeot & Renault
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Filing: 1972-05-15
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Granted: 1973-09-11
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Expires: 1992-05-15
Abstract
Abstract Device for regulating the flow of fuel injected into an internal combustion engine. A rolling diaphragm is exposed on one side to the pressure prevailing in the induction pipe of the engine and on the other side to a pressure in the neighbourhood of atmospheric pressure by way of a conduit in which a valve device is inserted for normally closing the conduit. The valve device is shifted to the conduit opening position when a cam regulating the amount of fuel injected reaches the vicinity of an extreme position corresponding to predetermined conditions of engine operation.
Inventors
- 👤 G Boue
- 👤 M Vidberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:53
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/20; F02M59/30; F02D; F02D1/00; F02D1/02; F02D1/08; F02M69/00; F02M69/30; F02M69/36; F02M69/40
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
246 words
A device for regulating the flow of fuel injected into an internal combustion engine by a fuel injecting system, comprising means defining a first chamber for connection to an induction pipe of the engine so as to be exposed to the pressure prevailing in the induction pipe, a first movable member having a first face defining a movable wall of the first chamber, means defining a second chamber, the movable member having a face opposed to said first face defining a movable wall of the second chamber, the movable member being movable with respect to the first chamber and second chamber between a first position and a second position, means for regulating the amount of fuel injected into the engine upon each injection effected by the injecting system, cam means operatively connecting the movable member to the regulating means so that movement of the movable member achieves a variation of the amount of fuel injected between a maximum amount in said first position and zero amount in said second position of the movable member, a conduit communicating with the second chamber for connection to an enclosure in which prevails a pressure in the neighbourhood of atmospheric pressure, a valve device inserted in the conduit for normally closing the conduit, and means associated with the cam means for shifting the valve device to a conduit opening position when the movable member, in moving toward said second position, reaches a position in the vicinity of said second position.
Claim 2
Independent Claim
246 words
A device for regulating the flow of fuel injected into an internal combustion engine by a fuel injecting system, comprising means defining a first chamber for connection to an induction pipe of the engine so as to be exposed to the pressure prevailing in the induction pipe, a first movable member having a first face defining a movable wall of the first chamber, means defining a second chamber, the movable member having a face opposed to said first face defining a movable wall of the second chamber, the movable member being movable with respect to the first chamber and second chamber between a first position and a second position, means for regulating the amount of fuel injected into the engine upon each injection effected by the injecting system, cam means operatively connecting the movable member to the regulating means so that movement of the movable member achieves a variation of the amount of fuel injected between a maximum amount in said first position and zero amount in said second position of the movable member, a conduit communicating with the second chamber for connection to an enclosure in which prevails a pressure in the neighbourhood of atmospheric pressure, a valve device inserted in the conduit for normally closing the conduit, and means associated with the cam means for shifting the valve device to a conduit opening position when the movable member, in moving toward said second position, reaches a position in the vicinity of said second position.
Claim 3
Dependent Claim
51 words
A device as claimed in claim 1, wherein the cam means comprise a second member movable by movement of the first member between said first and second positions and the means associated with the cam means comprise a push-rod operatively connected to the valve device and engageable by the second member.
Claim 4
Dependent Claim
118 words
A device as claimed in claim 1, wherein the valve device comprises a hollow body, a hollow housing mounted in the body, the body and the housing defining a third chamber, means defining within the housing a fourth chamber, the third chamber and the fourth chamber respeCtively communicating with a downstream part of the conduit and an upstream part of said conduit, the housing having an end wall defining an aperture putting the third chamber and fourth chamber in communication with each other and constituting a valve seat, a valve member co-operative with the seat for selectively preventing and allowing the communication between the third chamber and the fourth chamber according to the position of the valve member.
Claim 5
Dependent Claim
38 words
A device as claimed in claim 3, wherein the housing is mounted to be adjustable in position in the body so as to enable the instant when the valve member opens said aperture to be determined with precision.
Claim 6
Dependent Claim
63 words
A device as claimed in claim 3, comprising a plug engaged in the housing and defining the fourth chamber, a cavity in the plug, a stem portion on the valve member and guided in the cavity in the plug, and resiliently yieldable means interposed between the plug and the valve member and biasing the valve member to a position for closing the aperture.
Claim 7
Independent Claim
229 words
A device for regulating the flow of fuel injected into an internal combustion engine by a fuel injection system, comprising means defining a first chamber for connection to an air-induction pipe of the engine so as to be exposed to the pressure prevailing in the induction pipe, a movable member having a first face defining a movable wall of the first chamber, means defining a second chamber, the movable member having a second face which is opposed to said first face and defines a movable wall of the second chamber, the movable member being movable between a first position and a second position with respect to the first chamber and second chamber, means for regulating the amount of fuel injected upon each injection effected by the injection system and associated with the movable member so that the movable member actuates the regulating means and achieves a variation of the amount of fuel injected between a maximum amount in said first position of the movable member and zero in said second position of the movable member, means for putting the second chamber in communication with a pressure in the neighbourhood of atmospheric pressure and adapted and arranged and associated with the movable member to be normally inoperative but rendered operative when the movable member, in moving toward said second position, reaches a position in the vicinity of said second position.
Claim 8
Independent Claim
229 words
A device for regulating the flow of fuel injected into an internal combustion engine by a fuel injection system, comprising means defining a first chamber for connection to an air-induction pipe of the engine so as to be exposed to the pressure prevailing in the induction pipe, a movable member having a first face defining a movable wall of the first chamber, means defining a second chamber, the movable member having a second face which is opposed to said first face and defines a movable wall of the second chamber, the movable member being movable between a first position and a second position with respect to the first chamber and second chamber, means for regulating the amount of fuel injected upon each injection effected by the injection system and associated with the movable member so that the movable member actuates the regulating means and achieves a variation of the amount of fuel injected between a maximum amount in said first position of the movable member and zero in said second position of the movable member, means for putting the second chamber in communication with a pressure in the neighbourhood of atmospheric pressure and adapted and arranged and associated with the movable member to be normally inoperative but rendered operative when the movable member, in moving toward said second position, reaches a position in the vicinity of said second position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |