US4008692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle-mounted gaseous fuel generator
Assignee: Toyota Motor Corp
•
Filing: 1974-11-04
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Granted: 1977-02-22
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Expires: 1994-11-04
Abstract
Abstract Vehicle-mounted gaseous fuel generator consisting of a primary heat-exchange chamber holding coiled pipes for separately preheating a liquid hydrocarbon and water, a secondary heat-exchange chamber similarly equipped with coiled pipes utilizing the heat of the engine exhaust to heat and vaporize each of the fuel materials which have been preheated in the primary heat-exchange chamber, a reaction-reforming chamber composed of an outer reaction chamber for blending the hydrocarbon vaporized in the secondary heat exchange chamber with air for partial oxidation and an inner steam-reforming catalyst layer through which the combined flow of the partially oxidized gas and the vaporized water is passed to be transformed into an inflammable gas, and an apparatus for collecting the inflammable gas in a gas-collector and transmitting it via the primary heat-exchange chamber to the carburetor of the engine.
Inventors
- 👤 Hiroshi Shinohara
- 👤 Kunihiko Masunaga
- 👤 Shigeo Murakami
- 👤 Kazuhiko Ishiguro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:44
CPC Classifications
F; F02; F02B; F02B43/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
199 words
A gaseous fuel generator for mounting on a vehicle provided with a supply of liquid hydrocarbon, a supply of water and an internal combustion engine equipped with a carburetor and discharging an exhaust gas, said generator comprising a primary heat exchanger (3) holding separate coiled pipes (12, 13) for separately receiving and heating liquid hydrocarbon and water provided by said supplies, a secondary heat-exchanger (2) holding separate coiled pipes connected to the coiled pipes (12, 13) of said primary heat exchanger to receive hydrocarbon and water respectively therefrom, means for conducting the exhaust gas from said engine to said secondary heat exchanger (2) to heat and vaporize said hydrocarbon and water, a reaction-reforming chamber (1) comprising an outer partial oxidation chamber (27) containing an outer catalyzer layer connected to receive hydrocarbon vaporized in said secondary heating chamber and air and partially oxidize said vaporized hydrocarbon, and an inner steam-reforming catalyzer layer (29) connected to receive both said partially oxidized hydrocarbon from said outer chamber and vaporized water from said secondary heating chamber, and transform them into an inflammable gas, and means (34, 35) for collecting said inflammable gas and transmitting it through said primary heat exchanger to said carburetor.
Claim 2
Dependent Claim
199 words
A gaseous fuel generator for mounting on a vehicle provided with a supply of liquid hydrocarbon, a supply of water and an internal combustion engine equipped with a carburetor and discharging an exhaust gas, said generator comprising a primary heat exchanger (3) holding separate coiled pipes (12, 13) for separately receiving and heating liquid hydrocarbon and water provided by said supplies, a secondary heat-exchanger (2) holding separate coiled pipes connected to the coiled pipes (12, 13) of said primary heat exchanger to receive hydrocarbon and water respectively therefrom, means for conducting the exhaust gas from said engine to said secondary heat exchanger (2) to heat and vaporize said hydrocarbon and water, a reaction-reforming chamber (1) comprising an outer partial oxidation chamber (27) containing an outer catalyzer layer connected to receive hydrocarbon vaporized in said secondary heating chamber and air and partially oxidize said vaporized hydrocarbon, and an inner steam-reforming catalyzer layer (29) connected to receive both said partially oxidized hydrocarbon from said outer chamber and vaporized water from said secondary heating chamber, and transform them into an inflammable gas, and means (34, 35) for collecting said inflammable gas and transmitting it through said primary heat exchanger to said carburetor.
Claim 3
Dependent Claim
39 words
A vehicle-mounted gaseous fuel generator as claimed in claim 1, which comprises a cylinder integrally holding said reaction-reforming chamber at its top, the secondary heat-exchange chamber 2 in its center and the primary heat-exchanger chamber 3 at its bottom.
Claim 4
Dependent Claim
59 words
A vehicle-mounted gaseous fuel generator as claimed in claim 1, wherein the reaction-reforming chamber comprises a cylinder holding an outer layer of a catalyzer for partial oxidation, and an inner mass of a steam-reforming catalyzer, and in which the steam-reforming catalyzer layer comprises several sections, each of which is equipped with a heat-exchanger utilizing the heat of engine exhaust.
Claim 5
Dependent Claim
49 words
A vehicle-mounted gaseous fuel generator as claimed in claim 3, in which the heat-exchanger in each section of the steam-reforming catalyzer comprises a pipe which is internally divided into two parts, one part serving to introduce the exhaust gas and the other part serving to discharge the exhaust gas.
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) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |