US3968775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel system for internal combustion engines
Assignee: Energy Research Inc
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Filing: 1973-09-24
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Granted: 1976-07-13
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Expires: 1993-09-24
Abstract
Abstract A fuel system for an internal combustion engine of the piston type vaporizes a liquid fuel and water and mixes the resulting gaseous fuel and water vapor with air in a metering valve which communicates with the internal combustion engine. Heat from a separate source and from the internal combustion engine is used in the vaporization of the fuel and water. The gaseous state of the fuel represents molecules at the greatest degree of separation from each other providing the greatest opportunity for contact of the reacting species in the gaseous condition as chemical reactions occur only between particles at the atomic or molecular level and it is necessary for the reacting species to be in actual contact at the time of reaction. The fuel system therefore enables complete combustion and the elimination of the atmospheric pollutants common in the operation of internal combustion engines.
Inventors
- 👤 Webster B. Harpman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:36
CPC Classifications
F; F02; F02M; F02M31/00; F02M31/02; F02M31/16; F02M31/18; F02M25/00; F02M25/022; F02M25/032; F02M25/035; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
209 words
An improved fuel system for an internal combustion engine having an inlet manifold and comprising a metering valve in communication with said inlet manifold for controlling air and gaseous fuel entering the same and introducing said air and gaseous fuel into said inlet manifold, a water vaporizer and a supply of water therefor and a liquid fuel vaporizer and a supply of liquid fuel therefor, an unbroken flat heating surface in said liquid fuel vaporizer for flash generation of said gaseous fuel, an electric resistance heating unit in said flat heating surface operating at a temperature of at least 700°F. and means for introducing said liquid fuel into said fuel vaporizer and directing the same against said flat heating surface for said flash vaporization thereon, means establishing communication between said liquid fuel vaporizer and said metering valve and between said water vaporizer and said metering valve, valve means in said means establishing communication between said liquid fuel vaporizer and said metering valve arranged to permit said gaseous fuel to flow only from said liquid fuel vaporizer to said metering valve and means for controlling the amount of liquid fuel introduced into said fuel vaporizer responsive in operation to the pressure of gaseous fuel generated in said liquid fuel vaporizer.
Claim 2
Dependent Claim
209 words
An improved fuel system for an internal combustion engine having an inlet manifold and comprising a metering valve in communication with said inlet manifold for controlling air and gaseous fuel entering the same and introducing said air and gaseous fuel into said inlet manifold, a water vaporizer and a supply of water therefor and a liquid fuel vaporizer and a supply of liquid fuel therefor, an unbroken flat heating surface in said liquid fuel vaporizer for flash generation of said gaseous fuel, an electric resistance heating unit in said flat heating surface operating at a temperature of at least 700°F. and means for introducing said liquid fuel into said fuel vaporizer and directing the same against said flat heating surface for said flash vaporization thereon, means establishing communication between said liquid fuel vaporizer and said metering valve and between said water vaporizer and said metering valve, valve means in said means establishing communication between said liquid fuel vaporizer and said metering valve arranged to permit said gaseous fuel to flow only from said liquid fuel vaporizer to said metering valve and means for controlling the amount of liquid fuel introduced into said fuel vaporizer responsive in operation to the pressure of gaseous fuel generated in said liquid fuel vaporizer.
Claim 3
Dependent Claim
16 words
The fuel system of claim 1 and wherein the liquid fuel vaporizer is a pressure vessel.
Claim 4
Dependent Claim
171 words
An improved fuel system for an internal combustion engine having an inlet manifold and comprising a metering valve in communication with said inlet manifold for controlling air and gaseous fuel entering the same and introducing said air and gaseous fuel into said manifold, a liquid fuel vaporizer and a supply of liquid fuel therefor, an unbroken flat heating surface in said liquid fuel vaporizer for flash generation of said gaseous fuel and means establishing communication between said liquid fuel vaporizer and said metering valve, a one way valve in said means establishing communication between said liquid fuel vaporizer and said metering valve, said one way valve normally open toward said metering valve, means for controlling the amount of liquid fuel introduced into said liquid fuel vaporizer responsive in operation to the pressure of gaseous fuel in said liquid fuel vaporizer, means in said flat heating surface operating at a temperature of at least 700°F. and means for delivering said liquid fuel to said flat heating surface for said flash vaporization thereon.
Claim 5
Dependent Claim
171 words
An improved fuel system for an internal combustion engine having an inlet manifold and comprising a metering valve in communication with said inlet manifold for controlling air and gaseous fuel entering the same and introducing said air and gaseous fuel into said manifold, a liquid fuel vaporizer and a supply of liquid fuel therefor, an unbroken flat heating surface in said liquid fuel vaporizer for flash generation of said gaseous fuel and means establishing communication between said liquid fuel vaporizer and said metering valve, a one way valve in said means establishing communication between said liquid fuel vaporizer and said metering valve, said one way valve normally open toward said metering valve, means for controlling the amount of liquid fuel introduced into said liquid fuel vaporizer responsive in operation to the pressure of gaseous fuel in said liquid fuel vaporizer, means in said flat heating surface operating at a temperature of at least 700°F. and means for delivering said liquid fuel to said flat heating surface for said flash vaporization thereon.
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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) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |