Patent US5360079A successfully refreshed from Google Patents.
US5360079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injected automotive engine
Assignee: Yamaha Motor Co Ltd
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Filing: 1990-10-02
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Granted: 1994-11-01
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Expires: 2010-10-02
Abstract
Abstract Two embodiments of motor vehicles powered by two cycle crankcase compression internal combustion engines having air fuel injectors. The air fuel injectors are mounted in the cylinder head but are disposed in such a position so that the fuel injector portion of the fuel air injector extends toward the high side of the hood to permit accessibility without sacrificing the use of a low hood line.
Inventors
- 👤 Ryuichi Ichikawa
- 👤 Junichi Kaku
- 👤 Takahiro Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:07
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/26; F02F1/36; F02F1/38; B; B60; B60K; B60K5/00; B60K5/04; F02B; F02B1/00; F02B1/02; F02B1/04; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B75/16; F02B75/18; F02B2075/1804; F02B2075/1812; F02F2001/244; F02F2001/247
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
122 words
In a motor vehicle having an engine compartment, an engine positioned in said engine compartment, said engine having an output shaft rotating about an axis extending transversely across said engine compartment, said engine compartment being defined in part by a downwardly sloping hood, said engine having a cylinder head juxtaposed to said hood, the vertical distance between one side of said cylinder head and said hood being less than the vertical distance between said hood and the other side of said cylinder head, and a plurality of fuel injectors mounted on said other side of said cylinder head, the area between said hood and said fuel injectors being generally open for free access to said fuel injectors when said hood is opened.
Claim 2
Dependent Claim
122 words
In a motor vehicle having an engine compartment, an engine positioned in said engine compartment, said engine having an output shaft rotating about an axis extending transversely across said engine compartment, said engine compartment being defined in part by a downwardly sloping hood, said engine having a cylinder head juxtaposed to said hood, the vertical distance between one side of said cylinder head and said hood being less than the vertical distance between said hood and the other side of said cylinder head, and a plurality of fuel injectors mounted on said other side of said cylinder head, the area between said hood and said fuel injectors being generally open for free access to said fuel injectors when said hood is opened.
Claim 3
Dependent Claim
32 words
In a motor vehicle as set forth in claim 1 wherein the fuel injectors are positioned above spark plugs mounted in the cylinder head for firing the charge in the combustion chambers.
Claim 4
Dependent Claim
35 words
In a motor vehicle as set forth in claim 1 wherein the fuel injectors comprise a portion of fuel air injectors which inject both air and fuel into respective combustion chambers through the cylinder head.
Claim 5
Dependent Claim
35 words
In a motor vehicle as set forth in claim 3 wherein the fuel air injectors have spray axes aligned with a respective axis of a respective cylinder bore forming in part the respective combustion chamber.
Claim 6
Dependent Claim
35 words
In a motor vehicle as set forth in claim 4 wherein the fuel injectors are mounted at an acute angle to the respective injector axis and extends therefrom toward the high side of the hood.
Claim 7
Dependent Claim
24 words
In a motor vehicle as set forth in claim 5 wherein the engine is positioned in a generally vertical orientation in the engine compartment.
Claim 8
Dependent Claim
21 words
A motor vehicle as set forth in claim 5 wherein the engine is a two cycle crankcase compression internal combustion engine.
Claim 9
Dependent Claim
33 words
In a motor vehicle as set forth in claim 5 wherein the fuel injectors are positioned above spark plugs mounted in the cylinder head for firing the charge in the respective combustion chamber.
Claim 10
Dependent Claim
21 words
A motor vehicle as set forth in claim 8 wherein the engine is a two cycle crankcase compression internal combustion engine.
Claim 11
Dependent Claim
24 words
In a motor vehicle as set forth in claim 8 wherein the engine is positioned in a generally vertical orientation in the engine compartment.
Claim 12
Dependent Claim
21 words
A motor vehicle as set forth in claim 10 wherein the engine is a two cycle crankcase compression internal combustion engine.
Claim 13
Dependent Claim
28 words
In a motor vehicle as set forth in claim 1 wherein the engine has an exhaust manifold that extends rearwardly from the engine relative to the engine compartment.
Claim 14
Dependent Claim
27 words
In a motor vehicle as set forth in claim 1 wherein the engine has an exhaust manifold that extends forwardly from the engine within the engine compartment.
Claim 15
Dependent Claim
35 words
In a motor vehicle as set forth in claim 1 wherein fuel is supplied to the fuel injectors through a fuel rail that is disposed in the path of air flow through the engine compartment.
Claim 16
Dependent Claim
36 words
In a motor vehicle as set forth in claim 14 wherein the fuel injectors comprises portions of respective fuel air injectors which inject both air and fuel into the respective combustion chamber through the cylinder head.
Claim 17
Dependent Claim
36 words
In a motor vehicle as set forth in claim 15 wherein air is supplied to the air fuel injectors by an air manifold that is disposed in the path of air flow through the engine compartment.
Claim 18
Dependent Claim
21 words
A motor vehicle as set forth in claim 1 wherein the engine is a two cycle crankcase compression internal combustion engine.
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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) | 1997-10-31 | 1998-05-02 | 1998-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-31 | 2002-05-02 | 2002-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-31 | 2006-05-02 | 2006-11-01 | $7700.00 | Window Closed / Lapsed |