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US4100900A
Expired / Lapsed
US
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Method and apparatus for controlling the air of combustion of carburetor engines
Assignee: Individual
•
Filing: 1976-06-01
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Granted: 1978-07-18
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Expires: 1996-06-01
Abstract
Abstract A valve is connected to an inlet opening on the conduit means leading from the carburetor of an internal combustion engine assembly to the combustion chamber of the engine. The valve has an air inlet thereon, and is operable by a conventional pneumatic vacuum actuator in response to the rotational speed of the engine to admit additional air of combustion to the conduit means for blending with the fuel and air mixture flowing therethrough from the carburetor to the combustion chamber. The additional air of combustion, which is proportional to the engine speed, improves combustion within the engine and thereby increases fuel efficiency while minimizing the production of pollutants.
Inventors
- 👤 Wilhelm Straub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:34
CPC Classifications
F; F02; F02M; F02M23/00; F02M23/04; F02M23/08; F02M23/09; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
313 words
Apparatus for controlling the air of combustion of a carburetor engine, said engine including a carburetor for producing a mixture of fuel and air, a combustion chamber, a vacuum operated pneumatic spark control system, and conduit means connecting said carburetor with said combustion chamber, said conduit means having an inlet opening therein, and said apparatus comprising: valve means connected with said conduit means inlet opening, and operable to be moved progressively from a closed position to an open position to admit a progressively increasing volume of additional air of combustion into said conduit means for blending with the mixture of fuel and air flowing therethrough from said carburetor to said combustion chamber, said valve means including: a valve body having a main bore and a reduced outlet bore therein, connected by a frusto-conical valve seat, said outlet bore being connected to said conduit means inlet opening, and said valve body further having at least one air inlet bore, said air inlet bore opening on said valve seat and extending tangentially to the longitudinal axis of said main bore whereby to encourage turbulence in the air flowing through said valve; and a valve stem received in said main bore, and having a conical head thereon that is engageable with said valve seat to close said valve; and actuator means connected to operate said valve means between said closed and said open positions in direct dependency upon the rotational speed of said carburetor engine, said actuator means including: an actuator housing having a diaphragm mounted therein, said diaphragm being connected with the vacuum of the pneumatic spark control system of said carburetor engine and being operated thereby; an operating stem carried by said diaphragm and connected directly with said valve stem; and resilient means mounted and arranged to urge said valve stem toward a valve "closed" position against valve opening force generated by said diaphragm.
Claim 2
Dependent Claim
313 words
Apparatus for controlling the air of combustion of a carburetor engine, said engine including a carburetor for producing a mixture of fuel and air, a combustion chamber, a vacuum operated pneumatic spark control system, and conduit means connecting said carburetor with said combustion chamber, said conduit means having an inlet opening therein, and said apparatus comprising: valve means connected with said conduit means inlet opening, and operable to be moved progressively from a closed position to an open position to admit a progressively increasing volume of additional air of combustion into said conduit means for blending with the mixture of fuel and air flowing therethrough from said carburetor to said combustion chamber, said valve means including: a valve body having a main bore and a reduced outlet bore therein, connected by a frusto-conical valve seat, said outlet bore being connected to said conduit means inlet opening, and said valve body further having at least one air inlet bore, said air inlet bore opening on said valve seat and extending tangentially to the longitudinal axis of said main bore whereby to encourage turbulence in the air flowing through said valve; and a valve stem received in said main bore, and having a conical head thereon that is engageable with said valve seat to close said valve; and actuator means connected to operate said valve means between said closed and said open positions in direct dependency upon the rotational speed of said carburetor engine, said actuator means including: an actuator housing having a diaphragm mounted therein, said diaphragm being connected with the vacuum of the pneumatic spark control system of said carburetor engine and being operated thereby; an operating stem carried by said diaphragm and connected directly with said valve stem; and resilient means mounted and arranged to urge said valve stem toward a valve "closed" position against valve opening force generated by said diaphragm.
Claim 3
Dependent Claim
34 words
Apparatus as recited in claim 1, further including: an adjustable proportioning screw mounted within said outlet bore, and operable to adjust the rate of air flow through said outlet bore into said conduit means.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |