Patent US3735740A successfully refreshed from Google Patents.
US3735740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air injection system for internal combustion engines
Assignee: Individual
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Filing: 1971-04-20
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Granted: 1973-05-29
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Expires: 1991-04-20
Abstract
Abstract An air injection system arranged to admit air under pressure into the combustion chamber of an internal combustion engine for reducing waste products of combustion and also increasing the efficiency of the engine. A valve assembly is mounted on the engine for communication at one of its ends to the combustion chamber and for communication at its other end to a pressure supply line for admitting cold air to the valve. The valve assembly includes a ball valve and plunger which automatically control the flow of air from the pressure supply line into the combustion chamber. The valve mechanism is arranged such that air is admitted to the combustion chamber precisely as the piston approaches the end of the compression stroke. In a preferred arrangement, the valve housing has a base by means of which such housing is clamped in place by the existing spark plug, with ports being bored adjacent to the spark plug for directing the air into the combustion chamber.
Inventors
- 👤 J Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:25
CPC Classifications
F; F02; F02B; F02B41/00; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
210 words
An air injection system for internal combustion engines comprising a. a valve housing having an inlet and an outlet, b. means arranged to connect the outlet of said valve housing to an internal combustion engine with said valve housing in communication with the combustion chamber of the engine, c. pressure supply means connected to the inlet of said valve housing providing a continuous supply of air under pressure, with the pressure thereof being greater than the pressure in the combustion chamber through at least most of the compression stroke of the piston in the combustion chamber, d. a ball valve in said valve housing controlling the flow of air through said valve housing, e. a plunger on the outlet side of said housing relative to said ball valve, f. a stem portion on said plunger arranged for engage-ment with said ball valve for unseating the latter, g. said plunger being arranged through its stem to unseat said ball valve by movement thereof toward said inlet end by a pressure from the combustion chamber which is less than the pressure in said pressure supply means whereby air is arranged to be admitted from said pressure supply to the combustion chamber during the compression stroke of the piston in the combustion chamber.
Claim 2
Dependent Claim
210 words
An air injection system for internal combustion engines comprising a. a valve housing having an inlet and an outlet, b. means arranged to connect the outlet of said valve housing to an internal combustion engine with said valve housing in communication with the combustion chamber of the engine, c. pressure supply means connected to the inlet of said valve housing providing a continuous supply of air under pressure, with the pressure thereof being greater than the pressure in the combustion chamber through at least most of the compression stroke of the piston in the combustion chamber, d. a ball valve in said valve housing controlling the flow of air through said valve housing, e. a plunger on the outlet side of said housing relative to said ball valve, f. a stem portion on said plunger arranged for engage-ment with said ball valve for unseating the latter, g. said plunger being arranged through its stem to unseat said ball valve by movement thereof toward said inlet end by a pressure from the combustion chamber which is less than the pressure in said pressure supply means whereby air is arranged to be admitted from said pressure supply to the combustion chamber during the compression stroke of the piston in the combustion chamber.
Claim 3
Dependent Claim
167 words
An air injection system in combination with an integral combustion engine having multiple cylinders, comprising a. a valve housing having an inlet and an outlet, b. means arranged to connect the outlet of said valve housing to an internal combustion engine with said valve housing in communication with the combustion chamber of the engine, c. pressure supply means connected to the inlet of said valve housing providing a continuous supply of air under pressure, with the pressure thereof being greater than the pressure in the combustion chamber throughout at least most of the compression stroke of the piston in the combustion chamber, d. control means in said valve housing arranged to admit air from said pressure supply to the combustion chamber during the compression stroke of the piston in the combustion chamber, e. and means connected between said valve housing and another cylinder of the engine in an arrangement whereby a stroke of said another cylinder operates said valve to admit air to the first mentioned cylinder.
Claim 4
Dependent Claim
167 words
An air injection system in combination with an integral combustion engine having multiple cylinders, comprising a. a valve housing having an inlet and an outlet, b. means arranged to connect the outlet of said valve housing to an internal combustion engine with said valve housing in communication with the combustion chamber of the engine, c. pressure supply means connected to the inlet of said valve housing providing a continuous supply of air under pressure, with the pressure thereof being greater than the pressure in the combustion chamber throughout at least most of the compression stroke of the piston in the combustion chamber, d. control means in said valve housing arranged to admit air from said pressure supply to the combustion chamber during the compression stroke of the piston in the combustion chamber, e. and means connected between said valve housing and another cylinder of the engine in an arrangement whereby a stroke of said another cylinder operates said valve to admit air to the first mentioned cylinder.
References Cited (Backward Citations)
US2011986A
Cited
US2994310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |