Patent US4102313A successfully refreshed from Google Patents.
US4102313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the regulation of the air-fuel mixture in internal combustion engines
Assignee: Individual
•
Filing: 1976-06-15
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Granted: 1978-07-25
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Expires: 1996-06-15
Abstract
Abstract A device for the regulation of the air-fuel mixture of internal combustion engines comprises a fuel gas or air inlet opening into the inlet manifold downstream of the throttle valve, the gas inlet being controlled by a valve which is controlled by a capsule containing a movable member such as a membrane or piston subject to the partial vacuum prevailing in the manifold, the partial vacuum being modulated as a function firstly of the inlet air flowrate and secondly of the composition of the exhaust gases.
Inventors
- 👤 Bernard R. Laprade
- 👤 Xavier J. Laprade
- 👤 Pierre J. Gele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:28
CPC Classifications
F; F02; F02D; F02D19/00; F02D19/02; F02D19/021; F02D19/023; F02D41/00; F02D41/0025; F02D41/0027; F02M; F02M21/00; F02M21/02; F02M21/0218; F02M21/023; F02M21/0239; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
A device for the regulation of the air-fuel mixture of internal combustion engines comprising a gas inlet opening into the inlet manifold downstream of the throttle valve for the control of the air flow, said gas inlet being controlled by a valve controlled by a capsule comprising a movable member held by an elastic return device, said movable member being subject to the partial vacuum prevailing in the manifold, the partial vacuum being itself modulated firstly as a function of the air flowrate in the inlet pipe and secondly as a function of the composition of the exhaust gases by an electromagnetic valve arranged in a pipe connecting the capsule to the atmosphere.
Claim 2
Independent Claim
113 words
A device for the regulation of the air-fuel mixture of internal combustion engines comprising a gas inlet opening into the inlet manifold downstream of the throttle valve for the control of the air flow, said gas inlet being controlled by a valve controlled by a capsule comprising a movable member held by an elastic return device, said movable member being subject to the partial vacuum prevailing in the manifold, the partial vacuum being itself modulated firstly as a function of the air flowrate in the inlet pipe and secondly as a function of the composition of the exhaust gases by an electromagnetic valve arranged in a pipe connecting the capsule to the atmosphere.
Claim 3
Dependent Claim
61 words
A device according to claim 1, wherein the modulation as a function of the air flow is effected by means of a second capsule comprising a movable member connected to the throat of a venturi situated in the inlet pipe, upstream of said throttle valve, and controlling a variable throttle arranged in the pipe connecting the first capsule to the manifold.
Claim 4
Dependent Claim
27 words
A device according to claim 2, wherein constrictions are arranged in the pipes connecting said capsules to said electromagnetic valve and said second capsule to the venturi.
Claim 5
Dependent Claim
75 words
A device according to claim 1, wherein the modulation as a function of the air flow is effected by combining a second capsule comprising a movable member connected to the inlet manifold downstream of the throttle valve and controlling a variable throttle arranged in a pipe connecting said first capsule to the manifold, electronic information as a function of the engine speed being supplied to an electronic device for the control of the electromagnetic valve.
Claim 6
Dependent Claim
27 words
A device according to claim 4, wherein constrictions are arranged in the pipes connecting said capsules to said electromagnetic valve and said second capsule to the manifold.
Claim 7
Dependent Claim
19 words
A device according to claim 1, further comprising a buffer volume interposed between the electromagnetic valve and said capsule.
Claim 8
Dependent Claim
43 words
A device according to claim 1, comprising a probe arranged in the exhaust pipe which produces a linear signal, adjustable means for producing a reference signal, and an electronic circuit which transforms said signals into impulses for the control of the electromagnetic valve.
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) | 1981-07-24 | 1982-01-23 | 1982-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-24 | 1986-01-23 | 1986-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-24 | 1990-01-23 | 1990-07-25 | $7700.00 | Window Closed / Lapsed |