US4300486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine system technical field
Assignee: Purification Sciences Inc
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Filing: 1979-04-13
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Granted: 1981-11-17
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Expires: 1999-04-13
Abstract
Abstract An internal combustion engine 10 wherein no compression function is carried out in the engine 10 and including a tank 30 of compressed air, a pressure regulator 34, a fuel injector 28, and means 40 and 42 for connecting the pressure regulator 34 and the fuel injector 28 to a foot pedal 38 for controlling air and fuel feed to the combustion chambers 22 in response to throttle demand. The engine can use spark or compression ignition and can provide full expansion. Compressed air can be generated more efficiently using central station power with a vast savings in the amount of oil consumed. The internal combustion engine system of this invention is useful in all applications for such engines including vehicles such as automobiles, trucks, locomotives, marine applications, airplanes, etc. as well as non-vehicle use.
Inventors
- 👤 Frank E. Lowther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:28
CPC Classifications
F; F02; F02B; F02B41/00; F02B25/00; F02B25/14; F02B3/00; F02B3/06; F02B3/08; F02B33/00; F02B33/32; F02B33/34; F02B33/36; F02M; F02M31/00; F02M31/02; F02M31/04; F02M31/06; F02M31/066; F02B1/00; F02B1/02; F02B1/04; F02D; F02D2200/00; F02D2200/02; F02D2200/06; F02D2200/0606; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
147 words
(A) An internal combustion engine including a least one piston-cylinder-combustion chamber system; (B) Means for operating said system to provide strokes consisting of an exhaust stroke, an intake stroke and a power stroke, with no compression stroke; (C) A tank for storing oxygen containing compressed gas and a conduit for feeding compressed gas from said tank to said at least one combustion chamber; (D) Means for controlling the flow of compressed gas from said tank through said conduit and to said at least one combustion chamber; (E) Means for feeding fuel into said at least one combustion chamber; and (F) Means for igniting a compressed gas-fuel mixture in said at least one combustion chamber; (G) Means for feeding ambient air into said at least one combustion chamber when said tank is empty; and (H) Means for compressing said ambient air in said at least one combustion chamber.
Claim 2
Dependent Claim
147 words
(A) An internal combustion engine including a least one piston-cylinder-combustion chamber system; (B) Means for operating said system to provide strokes consisting of an exhaust stroke, an intake stroke and a power stroke, with no compression stroke; (C) A tank for storing oxygen containing compressed gas and a conduit for feeding compressed gas from said tank to said at least one combustion chamber; (D) Means for controlling the flow of compressed gas from said tank through said conduit and to said at least one combustion chamber; (E) Means for feeding fuel into said at least one combustion chamber; and (F) Means for igniting a compressed gas-fuel mixture in said at least one combustion chamber; (G) Means for feeding ambient air into said at least one combustion chamber when said tank is empty; and (H) Means for compressing said ambient air in said at least one combustion chamber.
Claim 3
Dependent Claim
36 words
The apparatus according to claim 1 wherein said control means comprises a pressure regulator connected to a throttle for controlling the pressure of the compressed gas fed out of said tank in response to throttle demand.
Claim 4
Dependent Claim
22 words
The apparatus according to claim 1 including means for spark igniting a compressed gas-fuel mixture in said at least one combustion chamber.
Claim 5
Dependent Claim
22 words
The apparatus according to claim 1 including means for compression igniting a compressed gas-fuel mixture in said at least one combustion chamber.
Claim 6
Dependent Claim
18 words
The apparatus according to claim 1 including means for injecting fuel into said at least one combustion chamber.
Claim 7
Dependent Claim
31 words
The apparatus according to claim 5 wherein said fuel injection means comprises means for injecting fuel into said combustion chamber after said compressed gas has been fed into said combustion chamber.
Claim 8
Dependent Claim
28 words
The apparatus according to claim 5 wherein said fuel injection means comprises means for injecting fuel substantially simultaneously with the feeding of compressed gas into said combustion chamber.
Claim 9
Dependent Claim
29 words
The apparatus according to claim 5 wherein said fuel injection means includes means for injecting fuel into said combustion chamber prior to feeding compressed gas into said combustion chamber.
Claim 10
Dependent Claim
16 words
The apparatus according to claim 1 wherein said internal combustion engine is a four stroke engine.
Claim 11
Dependent Claim
42 words
The apparatus according to claim 9 including means for maintaining both the inlet and exhaust valves closed in the stroke of said at least one piston following the exhaust stroke while said piston moves from top dead center to bottom dead center.
Claim 12
Dependent Claim
41 words
The apparatus according to claim 10 including means for opening said inlet valve during a latter portion of the next stroke while said piston moves from bottom dead center to top dead center for feeding compressed gas into said combustion chamber.
Claim 13
Dependent Claim
16 words
The apparatus according to claim 1 wherein said internal combustion engine is a two stroke engine.
Claim 14
Dependent Claim
31 words
The apparatus according to claim 12 including means for opening the inlet valve during the first portion of the movement of the piston from top dead center to bottom dead center.
Claim 15
Dependent Claim
38 words
The apparatus according to claim 13 including means for igniting a compressed gas-fuel mixture in said combustion chamber after said inlet valve closes when said piston has already moved partway from top dead center to bottom dead center.
Claim 16
Dependent Claim
19 words
The apparatus according to claim 13 including means for injecting fuel into said combustion chamber during said first portion.
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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) | 1984-11-16 | 1985-05-18 | 1985-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-16 | 1989-05-18 | 1989-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-16 | 1993-05-18 | 1993-11-17 | $7700.00 | Window Closed / Lapsed |