Patent US1459262A successfully refreshed from Google Patents.
Patent US3788292A successfully refreshed from Google Patents.
US3788292A
Expired / Lapsed
US
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Fuel heat exchanger for internal combustion engine and method of use
Assignee: Individual
•
Filing: 1972-10-05
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Granted: 1974-01-29
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Expires: 1992-10-05
Abstract
Abstract Apparatus for gasifying a fuel and air mixture in an internal combustion engine comprising a baffled inlet chamber for receiving a fuel and air mixture essentially surrounding an exhaust chamber for receiving high temperature exhaust gases, thereby promoting temperatures in the baffled chamber sufficient to gasify said mixture prior to induction to said engine. Methods for gasifying fuels are also taught.
Inventors
- 👤 S Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:10
CPC Classifications
F; F02; F02M; F02M31/00; F02M31/02; F02M31/04; F02M31/06; F02M31/08; F02M31/087; F02M31/093; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
172 words
A fuel induction and combustion products exhaust system for an internal combustion engine, comprising: A. first and second elongated chambers having walls of thermally conductive material and having a first common wall portion therebetween, the first chamber having at least one port for fuel and air induction therethrough; B. a plurality of spaced connector ports through the first common wall portion for conveying fuel and air from the first elongated chamber to the second; C. a third elongated chamber having walls of thermally conductive material and having a second common wall portion with at least one of the first and second elongated chambers; D. first pipe meaNs substantially smaller in volume than the second chamber and of thermally conductive material, for conveying fuel and air mixture from the second elongated chamber through the third elongated chamber to inlet ports of the engine; E. means for conveying combustion products from exhaust ports of the engine into the third elongated chamber; and F. means for exhausting the combustion products from the third elongated chamber.
Claim 2
Dependent Claim
172 words
A fuel induction and combustion products exhaust system for an internal combustion engine, comprising: A. first and second elongated chambers having walls of thermally conductive material and having a first common wall portion therebetween, the first chamber having at least one port for fuel and air induction therethrough; B. a plurality of spaced connector ports through the first common wall portion for conveying fuel and air from the first elongated chamber to the second; C. a third elongated chamber having walls of thermally conductive material and having a second common wall portion with at least one of the first and second elongated chambers; D. first pipe meaNs substantially smaller in volume than the second chamber and of thermally conductive material, for conveying fuel and air mixture from the second elongated chamber through the third elongated chamber to inlet ports of the engine; E. means for conveying combustion products from exhaust ports of the engine into the third elongated chamber; and F. means for exhausting the combustion products from the third elongated chamber.
Claim 3
Dependent Claim
76 words
The system of claim 1, further including: G. second pipe means for conveying a fuel and air mixture connected to the at least one fuel and air induction port; and H. parallel pipe means pneumatically connected between the first and second pipe means for conveying a portion of the fuel and air mixture directly to the first pipe means, the parallel pipe means being at least partially located within the exhausting means to be heated thereby.
Claim 4
Dependent Claim
22 words
The system of claim 2, wherein the parallel pipe means is connected to the first pipe means within the third elongated chamber.
Claim 5
Dependent Claim
55 words
The system of claim 1, further including: G. second pipe means pneumatically connected between the exhausting means and the first pipe means for conveying a portion of the combustion products back to the inlet ports of the engine; and H. valve means located in said second pipe means for regulating flow of combustion products therethrough.
Claim 6
Dependent Claim
102 words
The system of claim 1, wherein the first pipe means comprises: D1. a section of pipe located within the third elongated chamber and running substantially the length thereof; D2. first plurality of pneumatic connection pipes joining the section of pipe in pneumatic receiving relation with the second elongated chamber; D3. distribution pipe means located outside the third elongated chamber and having a second plurality of pneumatic connection pipes joining the distribution pipe in pneumatic receiving relation to the section of pipe within the third elongated chamber; and D4. means for pneumatically connecting the distribution pipe to the inlet ports of the engine.
Claim 7
Dependent Claim
85 words
The system of claim 5, further including: G. second pipe means for conveying a fuel and air mixture connected to the at least one fuel and air induction port; and H. parallel pipe means pneumatically connected between the section of pipe located within the third elongated chamber and the second pipe means for conveying a portion of the fuel and air mixture directly to the section of pipe, the parallel pipes means being at least partially located within the exhausting means to be heated thereby.
Claim 8
Dependent Claim
28 words
The system of claim 1, wherein the first common wall portion has opposite ends and there are two spaced connector ports, one at each of the opposite ends.
Claim 9
Independent Claim
130 words
A method of gasifying a hydrocarbon fuel for use in an internal combustion engine, comprising the steps of: A. mixing the fuel with air to form a combustible mixture; B. drawing the combustible mixture through a first pipe, into a first chamber for expansion therein; C. heating the mixture as it expands in the first chamber; D. drawing the mixture through a plurality of ports joining the first chamber to a second chamber for expansion therein; E. further heating the mixture as it expands in the second chamber; F. drawing the mixture through a plurality of ports in the second chamber into a second pipe substantially smaller in volume than the second chamber; and G. heating the second pipe to gasify the mixture therein prior to induction into the engine.
Claim 10
Independent Claim
130 words
A method of gasifying a hydrocarbon fuel for use in an internal combustion engine, comprising the steps of: A. mixing the fuel with air to form a combustible mixture; B. drawing the combustible mixture through a first pipe, into a first chamber for expansion therein; C. heating the mixture as it expands in the first chamber; D. drawing the mixture through a plurality of ports joining the first chamber to a second chamber for expansion therein; E. further heating the mixture as it expands in the second chamber; F. drawing the mixture through a plurality of ports in the second chamber into a second pipe substantially smaller in volume than the second chamber; and G. heating the second pipe to gasify the mixture therein prior to induction into the engine.
Claim 11
Dependent Claim
28 words
The method of claim 8, further comprising the step of controllably mixing a portion of the exhaust gases from the engine with the mixture in the second pipe.
Claim 12
Dependent Claim
70 words
The method of claim 8, further comprising the steps of: H. simultaneously drawing a lesser portion of the combustible mixture through a third pipe in parallel with drawing a greater portion of the combustible mixture into the first chamber; I. heating tHe lesser portion as it flows through the third pipe; and J. subsequently passing the lesser portion into the second pipe to be mixed therein with the greater portion.
Claim 13
Dependent Claim
31 words
The method of claim 10, wherein the heating steps are performed by exposing the first and second chambers and the second and third pipes to the exhaust gases from the engine.
Claim 14
Dependent Claim
29 words
The method of claim 8 wherein the heating steps are performed by exposing the first and second chambers and the second pipe to the exhaust gases from the engine.
Claim 15
Dependent Claim
24 words
The method of claim 8, wherein the fuel is gasoline and the second pipe is heated to a temperature of from 610* to 640*F.
Claim 16
Dependent Claim
22 words
The method of claim 8, wherein the fuel is kerosene and the second pipe is heated to a minimum temperature of 580*F.
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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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |