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US5048501A Expired / Lapsed US ⏱️ 0.0 years remaining

Fuel economy system for internal combustion engines

Assignee: Individual
•
Filing: 1989-03-27
•
Granted: 1991-09-17
•
Expires: 2009-03-27
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Abstract

Abstract A mechanical process for significantly improving the octane rating performance of gasoline powered engines (either conventional carburetion or fuel injection). An auxiliary system fractionates a precise portion of the required fuel and combines the fraction thus formed with a conventionally produced air/fuel mixture in states and proportions which optimize the combustion process. Different means of implementing the process are described utilizing an additional fuel controller which is connected to a fuel supply through an existing fuel pump which delivers fuel to both the fuel controller and an existing carburetion of fuel-injection system. Air for both is drawn through a common air filter. A proportioning system determines the proper amount of air and fuel entering the controller where they are mixed. The vapor fraction is enhanced and stabilized by passing the mixture through a heat exchanger. This vapor-rich mixture is then combined with the air/fuel mixture supplied by the existing system, and introduced into the engine's manifold. Precise control of the vapor fraction permits highly efficient combustion heretofore attainable only with chemical additives, such as tetraethyl lead.

Inventors

  • 👤 Dale T. Smith
  • 👤 C. George Amistadi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 03:44
CPC Classifications
F; F02; F02M; F02M31/00; F02M31/02; F02M31/16; F02M31/04; F02M31/042; F02M31/18; F02M31/183; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 97 words
A supplemental (add-on) air and fuel vaporization process and apparatus, for an internal combustion engine comprising, means for mixing air and supplemental fuel, and, supplying said mixture to a chamber that is a heat exchanger that is at least one of internally and externally heated, effecting vaporization of a portion of the supplemental fuel in said heated chamber, and combining the heated, partly vaporized fuel and air mixture with at least one of the conventional air of a fuel injected engine and air and fuel mixture, and supplying the total mixture to the combustion chambers for ignition.
Claim 2
Dependent Claim 97 words
A supplemental (add-on) air and fuel vaporization process and apparatus, for an internal combustion engine comprising, means for mixing air and supplemental fuel, and, supplying said mixture to a chamber that is a heat exchanger that is at least one of internally and externally heated, effecting vaporization of a portion of the supplemental fuel in said heated chamber, and combining the heated, partly vaporized fuel and air mixture with at least one of the conventional air of a fuel injected engine and air and fuel mixture, and supplying the total mixture to the combustion chambers for ignition.
Claim 3
Dependent Claim 22 words
The process according to claim 1 wherein the quantities of supplemental fuel and air are controlled by the conventional fuel control system.
Claim 4
Dependent Claim 36 words
An apparatus according to claim 2 for controlling the supplemental fuel comprising a mechanical linkage, sliding assemblies with the conventional carburetor such that signals received by the carburetor are directly transferred to the supplemental fuel controller.
Claim 5
Dependent Claim 29 words
An apparatus according to claim 1 wherein supplemental air is drawn from the altered, conventional air filter system such that the supplemental air is withdrawn from inside the filter.
Claim 6
Dependent Claim 21 words
The process according to claim 1 wherein the heat for the heat exchanger is provided by gas from the exhaust manifold.
Claim 7
Dependent Claim 23 words
The process according to claim 1 wherein the heat for the heat exchanger is provided by the liquid heating system for the engine.

References Cited (Backward Citations)

US3963013A Cited
US4174691A Cited
US4257366A Cited
US4350134A Cited
US4458653A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-09-16 1995-03-18 1995-09-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-09-16 1999-03-18 1999-09-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-09-16 2003-03-18 2003-09-17 $7700.00 Window Closed / Lapsed

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