US5207190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
V-type fuel injection two cycle engine
Assignee: Yamaha Marine Co Ltd
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Filing: 1992-07-01
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Granted: 1993-05-04
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Expires: 2012-07-01
Abstract
Abstract An induction system for a crankcase compression, two cycle, V-type internal combustion engine having a compact configuration. The engine cylinder banks are disposed at a V-angle and define a valley therebetween in which the induction system is positioned. A fuel injector is supplied for spraying fuel to each of the intake ports and the fuel injectors are disposed in the valley of the engine each between the respective induction system and the cylinders served by it.
Inventors
- 👤 Katsumi Torigai
- 👤 Masanori Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:29
CPC Classifications
F; F02; F02D; F02D9/00; F02D9/08; F02D9/10; F02D9/109; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02M; F02M35/00; F02M35/10; F02M35/1015; F02M35/1019; F02M35/10209; F02M35/10216; F02M35/104; F02M35/116; F02B75/02; F02B2075/022; F02B2075/025; F02B2075/1804; F02B2075/1824; F02B61/00; F02B61/04; F02B61/045; F02F; F02F2200/00; F02F2200/06; F02M35/10242; F02M35/10301
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
97 words
A fuel injector and induction system for a two cycle, crankcase compression, V-type internal combustion engine comprising a crankcase, a pair of cylinders extending from said crankcase at an angle to each other to define a valley therebetween, a pair of intake ports, one for each of said cylinders, disposed in said valley, a pair of intake pipes disposed in said valley, each serving a respective one of said intake ports for supplying a charge thereto, and a pair of fuel injectors disposed in said valley, each supplying fuel to a respective one of said intake ports.
Claim 2
Dependent Claim
97 words
A fuel injector and induction system for a two cycle, crankcase compression, V-type internal combustion engine comprising a crankcase, a pair of cylinders extending from said crankcase at an angle to each other to define a valley therebetween, a pair of intake ports, one for each of said cylinders, disposed in said valley, a pair of intake pipes disposed in said valley, each serving a respective one of said intake ports for supplying a charge thereto, and a pair of fuel injectors disposed in said valley, each supplying fuel to a respective one of said intake ports.
Claim 3
Dependent Claim
27 words
A fuel injector and induction system as set forth in claim 1 wherein the fuel injectors are disposed between the intake ports and the cylinders served thereby.
Claim 4
Dependent Claim
26 words
A fuel injector and induction system as set forth in claim 2 wherein the intake pipes and the intake ports extend generally parallel to each other.
Claim 5
Dependent Claim
48 words
A fuel injector and induction system as set forth in claim 3 further including a pair of reed type check valves, each positioned in a respective one of the intake ports for permitting flow from the intake pipe into the crankcase while precluding flow in a reverse direction.
Claim 6
Dependent Claim
60 words
A fuel injector and induction system as set forth in claim 4 wherein each reed type check valve has a generally V-shaped configuration defined by a cage to which a pair of reed type valves are affixed and wherein the bight of the cage extends substantially parallel to the axis of rotation of a crankshaft rotatably journalled in the crankcase.
Claim 7
Dependent Claim
27 words
A fuel injector and induction system as set forth in claim 5 wherein each fuel injectors sprays toward and against the bight of the V-type check valves.
Claim 8
Dependent Claim
26 words
A fuel injector and induction system as set forth in claim 1 wherein the intake pipes and the intake ports extend generally parallel to each other.
Claim 9
Dependent Claim
48 words
A fuel injector and induction system as set forth in claim 7 further including a pair of reed type check valves, each positioned in a respective one of the intake ports for permitting flow from the intake pipe into the crankcase while precluding flow in a reverse direction.
Claim 10
Dependent Claim
60 words
A fuel injector and induction system as set forth in claim 8 wherein each reed type check valve has a generally V-shaped configuration defined by a cage to which a pair of reed type valves are affixed and wherein the bight of the cage extends substantially parallel to the axis of rotation of a crankshaft rotatably journalled in the crankcase.
Claim 11
Dependent Claim
27 words
A fuel injector and induction system as set forth in claim 9 wherein each fuel injectors sprays toward and against the bight of the V-type check valves.
Claim 12
Dependent Claim
63 words
A fuel injector and induction system as set forth in claim 1 wherein the cylinders are formed as a part of a cylinder block assembly to which the crankcase is affixed, the cylinders of said cylinder block assembly being staggered relative to each other and the intake ports being formed in the cylinder block and communicating with the crankcase through the cylinder block.
Claim 13
Dependent Claim
27 words
A fuel injector and induction system as set forth in claim 11 wherein the fuel injectors are disposed between the intake ports and the cylinders served thereby.
Claim 14
Dependent Claim
26 words
A fuel injector and induction system as set forth in claim 12 wherein the intake pipes and the intake ports extend generally parallel to each other.
Claim 15
Dependent Claim
48 words
A fuel injector and induction system as set forth in claim 13 further including a pair of reed type check valves, each positioned in a respective one of the intake ports for permitting flow from the intake pipe into the crankcase while precluding flow in a reverse direction.
Claim 16
Dependent Claim
60 words
A fuel injector and induction system as set forth in claim 14 wherein each reed type check valve has a generally V-shaped configuration defined by a cage to which a pair of reed type valves are affixed and wherein the bight of the cage extends substantially parallel to the axis of rotation of a crankshaft rotatably journalled in the crankcase.
Claim 17
Dependent Claim
27 words
A fuel injector and induction system as set forth in claim 15 wherein each fuel injectors sprays toward and against the bight of the V-type check valves.
Claim 18
Dependent Claim
26 words
A fuel injector and induction system as set forth in claim 11 wherein the intake pipes and the intake ports extend generally parallel to each other.
Claim 19
Dependent Claim
48 words
A fuel injector and induction system as set forth in claim 17 further including a pair of reed type check valves, each positioned in a respective one of the intake ports for permitting flow from the intake pipe into the crankcase while precluding flow in a reverse direction.
Claim 20
Dependent Claim
60 words
A fuel injector and induction system as set forth in claim 18 wherein each reed type check valve has a generally V-shaped configuration defined by a cage to which a pair of reed type valves are affixed and wherein the bight of the cage extends substantially parallel to the axis of rotation of a crankshaft rotatably journalled in the crankcase.
Claim 21
Dependent Claim
27 words
A fuel injector and induction system as set forth in claim 19 wherein each fuel injectors sprays toward and against the bight of the V-type check valves.
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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) | 1996-05-03 | 1996-11-02 | 1997-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-03 | 2000-11-02 | 2001-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-03 | 2004-11-02 | 2005-05-04 | $7700.00 | Window Closed / Lapsed |