US4524730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for improving fuel efficiency and reduced emissions in internal combustion engines
Assignee: DOELLWOOD FINANCIAL Inc
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Filing: 1983-08-19
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Granted: 1985-06-25
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Expires: 2003-08-19
Abstract
Abstract A system for improving the efficiency of an internal combustion engine, and thereby improving fuel economy while reducing emissions is disclosed, which comprises providing a stream of vaporized fuel from a vaporization chamber to the air intake stream of the engine. Surprisingly, this system is suitable for use with both diesel and gasoline engines of conventional and rotary type, as well as jet engines and other internal combustion engines. Entraining about 0.05-1.0% of the total fuel consumed in the air intake stream according to this system results in a substantial improvements of fuel economy (up to 36% improvement over the same engine without the vaporization system) while reducing pollutants at least one order of magnitude below the current standards.
Inventors
- 👤 Brant Doell
- 👤 John T. Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:32
CPC Classifications
F; F02; F02B; F02B49/00; F02B41/00; F02B1/00; F02B1/02; F02B1/04; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
121 words
A system for improving the efficiency of a diesel internal combustion engine having a principle fuel supply and delivery system comprising a means for mixing said fuel and air, and an air intake stream, thereby improving fuel efficiency and reducing pollutants therefrom, comprising: providing, as an adjunct to said principle engine fuel supply system, vaporized fuel drawn from said principle fuel supply to said air intake stream downstream of said mixing means, whereby said vaporized fuel is distributed to at least one combustion chamber of said engine, said vaporized fuel being supplied by a vaporization chamber in fluid communication with said principle fuel supply whereby said vaporized fuel is drawn from said principle fuel supply for vaporization in said vaporization chamber.
Claim 2
Independent Claim
121 words
A system for improving the efficiency of a diesel internal combustion engine having a principle fuel supply and delivery system comprising a means for mixing said fuel and air, and an air intake stream, thereby improving fuel efficiency and reducing pollutants therefrom, comprising: providing, as an adjunct to said principle engine fuel supply system, vaporized fuel drawn from said principle fuel supply to said air intake stream downstream of said mixing means, whereby said vaporized fuel is distributed to at least one combustion chamber of said engine, said vaporized fuel being supplied by a vaporization chamber in fluid communication with said principle fuel supply whereby said vaporized fuel is drawn from said principle fuel supply for vaporization in said vaporization chamber.
Claim 3
Dependent Claim
20 words
The system of claim 1, wherein said vaporized fuel is from 0.05-1.0% of the total fuel consumed by said engine.
Claim 4
Dependent Claim
19 words
The system of claim 2 wherein said vaporized fuel is 0.1% of the total fuel consumed by said engine.
Claim 5
Dependent Claim
59 words
The system of claim 1, wherein said fluid communication is effected by a fuel pump capable of pumping fuels from said fuel supply to said vaporization chamber, said fuel pump being provided with a constant flow of fuel, a release valve and a fuel recirculation line to return fuel not consumed in said vaporization chamber to said fuel supply.
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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) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |