US4677944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel supplying device for internal combustion engine
Assignee: Yamaha Marine Co Ltd
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Filing: 1986-06-09
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Granted: 1987-07-07
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Expires: 2006-06-09
Abstract
Abstract A fuel supplying device for an internal combustion engine and particularly the engine of an outboard motor operating on the two-stroke principle. The engine is provided with a charge forming device and induction system that is supplied with a liquid fuel having a quality lower than gasoline. A source of pressurized gaseous fuel is also provided for selectively supplying a higher quality fuel to the engine under certain running conditions.
Inventors
- 👤 Seiichi Nishimura
- 👤 Hidekazu Takayasu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:21
CPC Classifications
F; F02; F02M; F02M13/00; F02M13/08; F02B; F02B61/00; F02B61/04; F02B61/045; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
94 words
In a fuel feeding system for an outboard motor having an internal combustion engine having a combustion chamber and of the type operated on a liquid fuel and having a charge forming device and associated induction system for running of said engine, and a protective cowling encircling said outboard motor, the improvement comprising a source of pressurized gaseous fuel contained within said protective cowling and means for selectively supplying said gaseous fuel to said engine to an area that communicates with said combustion chamber only during a portion of the cycle of engine operation.
Claim 2
Dependent Claim
94 words
In a fuel feeding system for an outboard motor having an internal combustion engine having a combustion chamber and of the type operated on a liquid fuel and having a charge forming device and associated induction system for running of said engine, and a protective cowling encircling said outboard motor, the improvement comprising a source of pressurized gaseous fuel contained within said protective cowling and means for selectively supplying said gaseous fuel to said engine to an area that communicates with said combustion chamber only during a portion of the cycle of engine operation.
Claim 3
Dependent Claim
26 words
In a fuel feeding system as set forth in claim 1 wherein the gaseous fuel is supplied to the engine independently of the charge forming device.
Claim 4
Dependent Claim
25 words
In a fuel feeding system as set forth in claim 2 wherein the gaseous fuel is supplied to the engine independently of the induction system.
Claim 5
Dependent Claim
19 words
In a fuel feeding system as set forth in claim 1 wherein the engine is of the two-cycle type.
Claim 6
Dependent Claim
49 words
In a fuel feeding system as set forth in claim 4 wherein the two-cycle engine is of the crankcase compression type and further including a transfer passage for transferring the compressed fuel/air mixture from the crankcase to the combustion chamber, the gaseous fuel being supplied to the transfer passage.
Claim 7
Dependent Claim
44 words
In a fuel feeding system as set forth in claim 1 wherein the source of pressurized gaseous fuel comprises a container containing high pressure gaseous fuel and pressure regulating valve means for supplying the gaseous fuel to the engine at a regulated, lower pressure.
Claim 8
Dependent Claim
75 words
In a fuel feeding system for a two-cycle engine of the crankcase compression type operated on a liquid fuel and having a charge forming device and associated induction system for running of said engine, and a transfer passage for transferring the compressed fuel/air mixture from the crankcase to the combustion chamber, the improvement comprising a source of pressurized gaseous fuel and means for selectively supplying said gaseous fuel to said engine through said transfer passage.
Claim 9
Dependent Claim
75 words
In a fuel feeding system for a two-cycle engine of the crankcase compression type operated on a liquid fuel and having a charge forming device and associated induction system for running of said engine, and a transfer passage for transferring the compressed fuel/air mixture from the crankcase to the combustion chamber, the improvement comprising a source of pressurized gaseous fuel and means for selectively supplying said gaseous fuel to said engine through said transfer passage.
Claim 10
Dependent Claim
44 words
In a fuel feeding system as set forth in claim 7 wherein the source of pressurized gaseous fuel comprises a container containing high pressure gaseous fuel and pressure regulating valve means for supplying the gaseous fuel to the engine at a regulated, lower pressure.
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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) | 1990-07-06 | 1991-01-05 | 1991-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-06 | 1995-01-05 | 1995-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-06 | 1999-01-05 | 1999-07-07 | $7700.00 | Window Closed / Lapsed |