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US3799124A Expired / Lapsed US ⏱️ 0.0 years remaining

Hydrogen engine and method of fueling same

Assignee: POLLUTION FREE POWER CORP
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Filing: 1972-05-05
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Granted: 1974-03-26
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Expires: 1992-05-05
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Abstract

Abstract An internal combustion engine is fueled by hydrogen with the ratio of hydrogen to air within the combustion chamber or cylinder being varied to change the speed and power output of the engine and the flow of air to the engine is substantially unthrottled in contrast to the usual throttled flow of air and hydrocarbon fuel flowing from a carburetor to an engine. The preferred flow of hydrogen is substantially at ambient atmospheric pressure; and at light loads the hydrogen molecules may be concentrated within a portion of the chamber for combustion thereby burning a very lean charge of fuel. The engine and method of fueling provide higher thermal efficiencies, lower fuel consumptions and less pollutant emissions than similar engines fueled by a throttled flow of air-fuel mixtures, particularly hydrocarbon fuel-air mixtures.

Inventors

  • 👤 M Swain

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 16:24
CPC Classifications
F; F02; F02M; F02M21/00; F02M21/02; F02M21/0218; F02M21/023; F02M21/0233; F02D; F02D19/00; F02D19/02; F02D19/021; F02D19/023; F02M21/0203; F02M21/0206; F02M21/0239; F02B; F02B1/00; F02B1/02; F02B1/04; F02B43/00; F02B43/10; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30; Y02T90/00; Y02T90/40; Y10; Y10S; Y10S123/00; Y10S123/12

Claims Analysis

Total Claims: 16
Claim 1
Independent Claim 152 words
A method of fueling an internal combustion engine with a hydrogen-air fuel mixture for ignition by a spark igniting means in a chamber with a member therein driven by an increase in fluid pressure with burning of the fuel, said method comprising the steps of controlling the flow rate of hydrogen flowing to said chamber, inducing the flow of hydrogen into said chamber during an air intake movement of said member in said engine, conveying a substantially unthrottled flow of air and combining the same with said hydrogen during the intake movement of said member to form an ignitible homogeneous fuel mixture for burning said homogeneous mixture in said chamber with operation of said sparkigniting means, during compression and expansion strokes burning said homogeneous mixture, and adjusting the flow rate of hydrogen with changes in demand for speed or power output from said engine while said flow of air remains substantially unthrottled.
Claim 2
Independent Claim 152 words
A method of fueling an internal combustion engine with a hydrogen-air fuel mixture for ignition by a spark igniting means in a chamber with a member therein driven by an increase in fluid pressure with burning of the fuel, said method comprising the steps of controlling the flow rate of hydrogen flowing to said chamber, inducing the flow of hydrogen into said chamber during an air intake movement of said member in said engine, conveying a substantially unthrottled flow of air and combining the same with said hydrogen during the intake movement of said member to form an ignitible homogeneous fuel mixture for burning said homogeneous mixture in said chamber with operation of said sparkigniting means, during compression and expansion strokes burning said homogeneous mixture, and adjusting the flow rate of hydrogen with changes in demand for speed or power output from said engine while said flow of air remains substantially unthrottled.
Claim 3
Dependent Claim 38 words
A method in accordance with claim 1 including the step of inducing the flow of said hydrogen into said chamber at substantially ambient atmospheric pressure through paths of flow separated from paths for air flow to said chamber.
Claim 4
Dependent Claim 36 words
A method in accordance with claim 1 including the further step of raising the pressure of hydrogen to provide an increase flow rate for said hyDrogen in response to an increased demand for power of speed.
Claim 5
Dependent Claim 36 words
A method in accordance with claim 1 including the further step of controlling the flow of hydrogen to each chamber by opening and closing valves formed from the motion of the valve train for said engine.
Claim 6
Dependent Claim 40 words
A method in accordance with claim 1 including the step of adding water, water vapor, or carbon dioxide to said hydrogen-fuel mixture to lower the temperature of the burning and thereby reduce the nitric oxide emissions from the engine exhaust.
Claim 7
Dependent Claim 36 words
A method in accordance with claim 1 including the further step of generating a hydrogen containing gas and passing any gaseous by-products from said hydrogen generating step including carbon dioxide gas through said hydrogen burning engine.
Claim 8
Dependent Claim 196 words
An internal combustion engine for burning a hydrogen air fuel mixture, said engine comprising in combination: a plurality of combustion chambers for receiving a homogeneous mixture of air and hydrogen therein, a piston movable in each of said combustion chambers during an intake of hydrogen-air, a compression of the hydrogen and air, a burning of the hydrogen-air fuel mixture, and exhaust of the resultant products of burning, means for burning said air fuel mixture in said combustion chamber during said compression and expansion strokes, an intake conduit means extending to each of said combustion chambers and for conducting the flow of said fuel mixture by induction on said intake strokes of said pistons, a supply means containing hydrogen connected to said intake conduit means to supply hydrogen to said intake conduit means, and control means for selectively regulating the flow of hydrogen from said supply means to said intake conduit means to vary the speed and power output of said engine, said varying of said hydrogen flow by said control means causing an inversely proportional change in the percentage of air in said fuel mixture and resulting in a substantially constant volume charge to said cylinders.
Claim 9
Dependent Claim 196 words
An internal combustion engine for burning a hydrogen air fuel mixture, said engine comprising in combination: a plurality of combustion chambers for receiving a homogeneous mixture of air and hydrogen therein, a piston movable in each of said combustion chambers during an intake of hydrogen-air, a compression of the hydrogen and air, a burning of the hydrogen-air fuel mixture, and exhaust of the resultant products of burning, means for burning said air fuel mixture in said combustion chamber during said compression and expansion strokes, an intake conduit means extending to each of said combustion chambers and for conducting the flow of said fuel mixture by induction on said intake strokes of said pistons, a supply means containing hydrogen connected to said intake conduit means to supply hydrogen to said intake conduit means, and control means for selectively regulating the flow of hydrogen from said supply means to said intake conduit means to vary the speed and power output of said engine, said varying of said hydrogen flow by said control means causing an inversely proportional change in the percentage of air in said fuel mixture and resulting in a substantially constant volume charge to said cylinders.
Claim 10
Dependent Claim 50 words
An internal combustion engine in accordance with claim 7 in which said hydrogen supply means stores hydrogen gas at a pressure above a predetermined level, and in which said control means includes a pressure regulator for reducing the pressure of hydrogen from said supply means to said intake conduit means.
Claim 11
Dependent Claim 75 words
An internal combustion engine in accordance with claim 8 in which said pressure regulating means provides hydrogen to said intake conduit means at a first pressure substantially equal to ambient atmospheric pressure and in which said control means further comprises means for providing an increase in pressure for the hydrogen gas flowing through said intake conduit means to provide a fast response for a demand for an increase in power or speed for said engine.
Claim 12
Dependent Claim 49 words
An internal combustion engine in accordance with claim 7 in which said intake conduit means comprises hydrogen intake tubes projecting to said combustion chambers and air intake pipes extending to said combustion chambers, said hydrogen intake tubes and said air intake pipes being separate and discrete from each other.
Claim 13
Dependent Claim 43 words
An internal combustion engine in accordance with claim 10 in which said air intake pipes each have a substantially smooth continuous wall defining a passageway extending from adjacent said cylinders to an open end thereby alleviating inefficiencies due to flow about sharp corners.
Claim 14
Dependent Claim 55 words
An internal combustion engine in accordance with claim 7 in which said intake conduit means comprises a first set of intake tubes for conveying hydrogen for light power and speed demands to said combustion chambers and a second set of intake tubes for conveying hydrogen to said combustion chambers for heavier power and speed demands.
Claim 15
Dependent Claim 45 words
An internal combustion engine in accordance with claim 7 in which said intake conduit means comprises a set of intake tubes for conveying hydrogen and distribution adjusting means are provided for regulating the flow and distribution of hydrogen through the respective ones of said tubes.
Claim 16
Dependent Claim 80 words
An internal combustion engine in accordance with claim 7 including a valve train means operatively associated with said combustion chambers, valves in said valve train associated with each of said combustion chambers to move between an open position allowing flow of hydrogen gas into its associated combustion chamber and a closed position preventing flow of hydrogen gas into its associated combustion chamber, and means in said valve train for opening and closing said valves in timed relationship to each other.

References Cited (Backward Citations)

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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) 1977-03-25 1977-09-24 1978-03-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-03-25 1981-09-24 1982-03-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-03-25 1985-09-24 1986-03-26 $7700.00 Window Closed / Lapsed

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