US3897757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion device enabling a gasoline engine to be fueled with hydrogen
Assignee: CANADIAN JESUIT MISSIONS
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Filing: 1973-02-16
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Granted: 1975-08-05
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Expires: 1993-02-16
Abstract
Abstract A mechanism allows a simple gasoline engine to be converted to run using hydrogen as a fuel by the introduction of a pulse of hydrogen during the intake stroke. The mechanism is such that an engine may use either fuel at will but preferably simple changes to the cylinder head allow an engine to be converted into a high compression engine using hydrogen alone because of the greater efficiency.
Inventors
- 👤 Lawrence Abello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:35
CPC Classifications
F; F02; F02B; F02B43/00; F02B43/10; F02B69/00; F02B69/02; F02B1/00; F02B1/02; F02B1/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30; Y10; Y10S; Y10S123/00; Y10S123/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
A positive displacement internal combustion engine adapted to use hydrogen gas comprising: means for controlling the admission of air to a combustion space thereby defining an air intake stroke; a hydrogen supply means; means for connecting said hydrogen supply to said combustion space; means for predetermining a time during the air intake stroke; a normally closed valve means in said hydrogen supply connecting means; means for opening said valve means for a brief period which is substantially independent of the engine speed; and means connecting said time predetermining means to said valve opening means whereby a pulse of hydrogen is produced and conveyed to said combustion space, at a predetermined time during the air intake stroke.
Claim 2
Dependent Claim
116 words
A positive displacement internal combustion engine adapted to use hydrogen gas comprising: means for controlling the admission of air to a combustion space thereby defining an air intake stroke; a hydrogen supply means; means for connecting said hydrogen supply to said combustion space; means for predetermining a time during the air intake stroke; a normally closed valve means in said hydrogen supply connecting means; means for opening said valve means for a brief period which is substantially independent of the engine speed; and means connecting said time predetermining means to said valve opening means whereby a pulse of hydrogen is produced and conveyed to said combustion space, at a predetermined time during the air intake stroke.
Claim 3
Dependent Claim
24 words
An engine as claimed in claim 1 wherein the compression ratio is low enough to allow gasoline to be used as an alternative fuel.
Claim 4
Dependent Claim
26 words
An engine as claimed in claim 1 wherein the compression ratio is high enough to increase cycle efficiency above that attainable in a gasoline fueled engine.
Claim 5
Dependent Claim
38 words
An engine as claimEd in claim 1 wherein said valve means comprises a spring loaded plunger operated metering valve and said valve opening means is adapted to deliver an impulsive blow to the plunger of the valve means.
Claim 6
Dependent Claim
59 words
An engine as claimed in claim 1, wherein said engine comprises an exhaust valve and operating means therefor, and wherein the means for predetermining a time during the intake stroke comprises a means connected to the exhaust valve operating means, whereby production of a pulse of hydrogen is initiated by the return stroke of said exhaust valve operating means.
Claim 7
Dependent Claim
86 words
An engine as claimed in claim 1 wherein said engine comprises an exhaust valve and operating means therefor, and wherein said valve means comprises a spring loaded plunger operated metering valve, and said valve opening means comprises a trigger arm having a catch and a latch means connected to the exhaust valve operating means, said latch means being adapted to engage the trigger arm catch as the exhaust valve operating means undergoes a return stroke, whereby the production of a pulse of hydrogen gas is initiated.
Claim 8
Dependent Claim
23 words
An engine as claimed in claim 6 wherein an elbow portion of the trigger arm forms a releasing means for releasing the catch.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |