Patent US4167920A successfully refreshed from Google Patents.
US4167920A
Expired / Lapsed
US
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Method and apparatus for increasing the power of internal combustion engines by oxygen injection
Assignee: Individual
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Filing: 1977-09-28
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Granted: 1979-09-18
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Expires: 1997-09-28
Abstract
Abstract A method and apparatus for increasing the power of internal combustion engines is disclosed and includes the method step of injecting pure oxygen, under pressure, into the combustion chamber of the engine after ignition of the usual fuel mixture. The apparatus includes a source of oxygen under pressure, suitable lines leading to a distributing valve which is controlled by the cam shaft of the engine and suitable lines leading from the distributing valve to the individual cylinders. The apparatus also includes a one way check valve to avoid back feed of exhaust gas into the oxygen system.
Inventors
- 👤 Eugene D. Lepera
- 👤 Clarence E. Ritenour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:07
CPC Classifications
F; F02; F02B; F02B43/00; F02B43/10; F02D; F02D21/00; F02M; F02M25/00; F02M25/10; F02B2275/00; F02B2275/14; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T10/30; Y10; Y10S; Y10S123/00; Y10S123/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
84 words
A method of increasing the efficiency of an internal combustion engine in which fuel is vaporized with ambient air and drawn into a combustion chamber on an intake stroke; compressed by a piston within the chamber during a compression stroke; ignited to initiate a power stroke; and exhausted during an exhaust stroke; the improvement comprising the step of: (A) injecting substantially pure oxygen into the combustion chamber following the intake and compression stroke and after ingnition of the fuel-air mixture contained in the chamber.
Claim 2
Independent Claim
84 words
A method of increasing the efficiency of an internal combustion engine in which fuel is vaporized with ambient air and drawn into a combustion chamber on an intake stroke; compressed by a piston within the chamber during a compression stroke; ignited to initiate a power stroke; and exhausted during an exhaust stroke; the improvement comprising the step of: (A) injecting substantially pure oxygen into the combustion chamber following the intake and compression stroke and after ingnition of the fuel-air mixture contained in the chamber.
Claim 3
Dependent Claim
51 words
The method of claim 1 wherein said oxygen is continuously injected into said combustion chamber during the power stroke from the time the cam shaft of said engine is at approximately five (5) degrees from top dead center until said cam shaft reaches approximately two (2) degrees from bottom dead center.
Claim 4
Dependent Claim
102 words
In an internal combustion engine including a source of fuel; means for passing fuel vaporized by ambient air into at least one combustion chamber on an intake stroke; means for compressing said vaporized fuel in a compression stroke; means for igniting said fuel to initiate a power stroke and means for exhausting the spent gasses during an exhaust stroke the improvement comprising: (A) a source of substantially pure oxygen under pressure; and (B) means for injecting said oxygen into the combustion chamber after passage of said fuel into the combustion chamber, compression thereof and actuation of said means for igniting said fuel.
Claim 5
Dependent Claim
102 words
In an internal combustion engine including a source of fuel; means for passing fuel vaporized by ambient air into at least one combustion chamber on an intake stroke; means for compressing said vaporized fuel in a compression stroke; means for igniting said fuel to initiate a power stroke and means for exhausting the spent gasses during an exhaust stroke the improvement comprising: (A) a source of substantially pure oxygen under pressure; and (B) means for injecting said oxygen into the combustion chamber after passage of said fuel into the combustion chamber, compression thereof and actuation of said means for igniting said fuel.
Claim 6
Dependent Claim
27 words
The improvement of claim 3 wherein said means for injecting said oxygen includes a one way check valve between said source of oxygen and said combustion chamber.
Claim 7
Dependent Claim
164 words
In an internal combustion engine including a source of fuel, a distributor, at least one combustion chamber and means for igniting fuel passed from said source of fuel into said combustion chamber, the improvement comprising: (A) a source of oxygen under pressure; (B) means for injecting said oxygen into said combustion chamber after passage of said fuel into said combustion chamber and actuation of said means for igniting said fuel; and (C) said means for injecting oxygen into said combustion chamber including (1) a distributing valve assembly in fluid communication with said source of oxygen and having (a) a plurality of normally closed operating valves each of which is connected to one combustion chamber of said engine, (2) cam means associated with each of said operating valves; (3) a rotor connected to the cam shaft of said engine and the distributor thereof and passing through said distributing valve assembly and carrying an eccentric for actuation of said cam means to open said operating valves.
Claim 8
Dependent Claim
164 words
In an internal combustion engine including a source of fuel, a distributor, at least one combustion chamber and means for igniting fuel passed from said source of fuel into said combustion chamber, the improvement comprising: (A) a source of oxygen under pressure; (B) means for injecting said oxygen into said combustion chamber after passage of said fuel into said combustion chamber and actuation of said means for igniting said fuel; and (C) said means for injecting oxygen into said combustion chamber including (1) a distributing valve assembly in fluid communication with said source of oxygen and having (a) a plurality of normally closed operating valves each of which is connected to one combustion chamber of said engine, (2) cam means associated with each of said operating valves; (3) a rotor connected to the cam shaft of said engine and the distributor thereof and passing through said distributing valve assembly and carrying an eccentric for actuation of said cam means to open said operating valves.
Claim 9
Dependent Claim
29 words
The improvement of claim 4 wherein said operating valves include: (A) an elongate valve stem; and (B) a roller carried on one end thereof for engagement with said rotor.
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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) | 1982-09-17 | 1983-03-19 | 1983-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-17 | 1987-03-19 | 1987-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-17 | 1991-03-19 | 1991-09-18 | $7700.00 | Window Closed / Lapsed |