Patent US3875922A successfully refreshed from Google Patents.
US3875922A
Expired / Lapsed
US
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Vapor injection system
Assignee: Individual
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Filing: 1973-04-18
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Granted: 1975-04-08
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Expires: 1993-04-18
Abstract
Abstract This disclosure describes apparatus for supplying a vapor into the gasoline-air mixture of an internal combustion engine by means of the idle delivery orifice of a conventional carburetor and the vacuum thereat. The apparatus includes a reservoir for a liquid solution, preferably an aqueous solution of methanol and acetone. The reservoir is connected to the idle delivery orifice by a suction conduit which includes a flexible tube and a connector. The reservoir includes an adjusting valve and an octane increasing vapor conduit for bubbling a controlled amount of air through the solution to produce (air saturated with vapors of the solution) in the upper reservoir chamber, which is drawn into the fuel-air mixture through the suction conduit. The suction conduit connector includes a bored-out idle mixture screw which not only controls the amount of gasoline delivered through the idle delivery orifice, but delivers a stream of octane increasing vapor into gasoline in the delivery passageway. The amount of vapor delivered is a function of the fuel requirements of the engine, since the amount of vapor delivered is a function of the engine demand at the idle delivery orifice. A check valve in the idle mixture screw restricts back-flow from engine to reservoir.
Inventors
- 👤 Jr Frank Kirmss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:23
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/022; F02M25/0221; F02M25/0225; F02M25/025; F02M25/028; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S261/00; Y10S261/38
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
171 words
Vapor injector apparatus for a carburetted internal combustion engine of the kind having a carburetor equipped with a throat, a movable throttle valve in the throat, and a gasoline passage leading to an idle port, said idle port being located downstream of the throttle valve for introducing gasoline into a stream of air moving through said carburetor throat, said injector apparatus comprising: a hollow vapor delivery tube mountable in said carburetor gasoline passage, the output end of said tube being configured to establish with the walls of said passage flow-rate fixing means for gasoline flowing through said passage to the idle port, and vapor delivery means for delivering an octane increasing vapor to the input end of said tube including a closed reservoir for containing a supply of volatile liquid with a vapor chamber above the liquid, means for admitting air into said reservoir below the liquid level at a metered rate, and conduit means for providing communication between said vapor chamber and said input end of the vapor delivery tube.
Claim 2
Dependent Claim
171 words
Vapor injector apparatus for a carburetted internal combustion engine of the kind having a carburetor equipped with a throat, a movable throttle valve in the throat, and a gasoline passage leading to an idle port, said idle port being located downstream of the throttle valve for introducing gasoline into a stream of air moving through said carburetor throat, said injector apparatus comprising: a hollow vapor delivery tube mountable in said carburetor gasoline passage, the output end of said tube being configured to establish with the walls of said passage flow-rate fixing means for gasoline flowing through said passage to the idle port, and vapor delivery means for delivering an octane increasing vapor to the input end of said tube including a closed reservoir for containing a supply of volatile liquid with a vapor chamber above the liquid, means for admitting air into said reservoir below the liquid level at a metered rate, and conduit means for providing communication between said vapor chamber and said input end of the vapor delivery tube.
Claim 3
Dependent Claim
30 words
Apparatus as defined in claim 1 wherein said hollow vapor delivery tube comprises: an idle jet needle mountable in said gasoline passage, said needle having a generally axial bore therethrough.
Claim 4
Dependent Claim
29 words
Apparatus as defined in claim 2 wherein said idle jet needle is adjustably mountable in said carburetor gasoline passage so as to adjustably regulate gasoline flow through said passage.
Claim 5
Dependent Claim
18 words
Apparatus as defined in claim 1 including check valve means permitting fluid flow toward said idle port only.
Claim 6
Dependent Claim
18 words
Apparatus as defined in claim 4 wherein said check valve means is integral with said vapor delivery tube.
Claim 7
Dependent Claim
21 words
Apparatus as defined in claim 5 wherein said vapor delivery means includes valve means for establishing a maximum vapor flow rate.
Claim 8
Dependent Claim
24 words
Apparatus as defined in claim 6 wherein said valve means is positioned at the input of said means for admitting air into said reservoir.
Claim 9
Dependent Claim
44 words
Apparatus as defined in claim 1 wherein the hollow vapor delivery tube is positionable in said gasoline passage such that the vapor from the output end of said tube mixes with the gasoline in said passage through said idle port, thereby atomizing said gasoline.
Claim 10
Dependent Claim
158 words
In combination: a. a carburetor of the type having a throat, a movable throttle plate in the throat, and a gasoline passage leading to an idle port, said idle port being located downstream of the throttle valve for introducing gasoline into a stream of air moving through said carburetor throat, b. a hollow vapor delivery tube mounted in said carburetor gasoline passage, the output end of said tube being configured to establish with the walls of said passage flowrate fixing means for gasoline flowing through said passage to the idle port, and c. means for delivering octane increasing vapor to the input end of said tube including a closed reservoir for containing a supply of volatile liquid with a vapor chamber above the liquid, means for admitting air into said reservoir below the liquid level at a metered rate, and conduit means for providing communication between said vapor chamber and said input end of the vapor delivery tube.
Claim 11
Dependent Claim
158 words
In combination: a. a carburetor of the type having a throat, a movable throttle plate in the throat, and a gasoline passage leading to an idle port, said idle port being located downstream of the throttle valve for introducing gasoline into a stream of air moving through said carburetor throat, b. a hollow vapor delivery tube mounted in said carburetor gasoline passage, the output end of said tube being configured to establish with the walls of said passage flowrate fixing means for gasoline flowing through said passage to the idle port, and c. means for delivering octane increasing vapor to the input end of said tube including a closed reservoir for containing a supply of volatile liquid with a vapor chamber above the liquid, means for admitting air into said reservoir below the liquid level at a metered rate, and conduit means for providing communication between said vapor chamber and said input end of the vapor delivery tube.
Claim 12
Dependent Claim
18 words
Apparatus as defined in claim 9 including check valve means permitting fluid flow toward said idle port only.
Claim 13
Dependent Claim
18 words
Apparatus as defined in claim 10 wherein said check valve means is integral with said vapor delivery tube.
Claim 14
Dependent Claim
44 words
Apparatus as defined in claim 11 wherein the hollow vapor delivery tube is positionable in said gasoline passage such that the vapor from the output end of said tube mixes with the gasoline in said passage through said idle port, thereby atomizing said gasoline.
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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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |