EP0887527B1 - Anordnung eines Aussenbordmotors für ein Boot - Google Patents

Anordnung eines Aussenbordmotors für ein Boot Download PDF

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Publication number
EP0887527B1
EP0887527B1 EP98111762A EP98111762A EP0887527B1 EP 0887527 B1 EP0887527 B1 EP 0887527B1 EP 98111762 A EP98111762 A EP 98111762A EP 98111762 A EP98111762 A EP 98111762A EP 0887527 B1 EP0887527 B1 EP 0887527B1
Authority
EP
European Patent Office
Prior art keywords
outboard motor
fuel
fuel tank
engine
arrangement according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98111762A
Other languages
English (en)
French (fr)
Other versions
EP0887527A2 (de
EP0887527A3 (de
Inventor
Kentaro Kameoka
Yoshiaki Tasaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Marine Co Ltd
Original Assignee
Sanshin Kogyo KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanshin Kogyo KK filed Critical Sanshin Kogyo KK
Publication of EP0887527A2 publication Critical patent/EP0887527A2/de
Publication of EP0887527A3 publication Critical patent/EP0887527A3/de
Application granted granted Critical
Publication of EP0887527B1 publication Critical patent/EP0887527B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
    • F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for marine engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/007—Layout or arrangement of systems for feeding fuel characterised by its use in vehicles, in stationary plants or in small engines, e.g. hand held tools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0076—Details of the fuel feeding system related to the fuel tank
    • F02M37/0088—Multiple separate fuel tanks or tanks being at least partially partitioned
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four

Definitions

  • the present invention relates to the technical field of outboard motors of the type for which respective fuel tanks are provided on the boat side and on outboard motor side.
  • the present invention relates to an outboard motor arrangement according to the preamble of claim 1.
  • An outboard motor which can be detachably mounted at the stern of a small boat as a propulsion unit is well known in the state of the art.
  • An engine is mounted in an upper portion of the propulsion unit.
  • Various components such as a silencer, a carburetor, a starter case and a fuel pump, etc. are installed around the engine in a manner such as to provide a compact structure.
  • the engine and auxiliary components are covered with an engine cover element which is called a cowling.
  • a cowling In order to keep the overall size of the upper portion small, only a small fuel tank is provided on the outboard motor side.
  • a system in which respective fuel tanks are provided on the boat side and inside the cowling is conventionally known for small outboard motors.
  • the invention aims at providing an outboard motor arrangement wherein the piping of the fuel supplying system is short and compact.
  • the fuel changeover cock is adapted to connect the fuel tank on the boat side and the fuel tank on the outboard motor side, and by an auxiliary fuel pump for supporting fuel exchange between said tanks. Moreover, an auxiliary fuel pump is provided for supporting fuel transfer between the tanks.
  • Fig. 1 is a side view of a 1st form of practice of an outboard motor arrangement according to the invention.
  • An outboard motor 1 is provided with a clamp bracket 3 which can be detachably mounted on the stern of a boat 2, a swivel bracket 6 which is supported via a horizontal shaft 5 on the clamp bracket 3 in a manner permitting it to pivot upward and downward and a propulsion unit 7 which is supported by the swivel bracket 6 in a manner permitting horizontally swinging.
  • the propulsion unit 7 has an upper case 9 which is rotatably supported by the swivel bracket 6, and a lower case 10 is fitted to the bottom portion of the upper case 9, so, overall, constituting a casing.
  • a propeller 11 is installed in the lower case 10, a bottom cowling 12, forming a cover element for the engine, is mounted on the upper portion of the upper case 9, and a top cowling 13 is detachably fitted on the bottom cowling 12.
  • a boat-side fuel tank 60 is installed on the boat 2 side, and it is connected to the outboard motor 1 via a manually actuated pump 61 and a fuel supply pipe 55.
  • 15 indicates a starter handle, 16 a steering handle, 17 a cooling water take-in port, and 19 the water surface.
  • Fig. 2 shows a vertical section of Fig. 1.
  • the upper case 9 is formed in the shape of a tube, an engine connection member 9a which spreads in a dish shape is formed at its top portion, a lower case connection member 9c is formed at its bottom portion, and a small-diameter tubular portion 9b is formed between the two connection members 9a and 9c.
  • the swivel bracket 6 is fitted to the top and bottom of this tubular portion 9b via rubber mounts 20, and the upper case 9 is rotatably supported by the swivel bracket 6.
  • An engine 21 is connected to the engine connection member 9a of the upper case 9.
  • the engine 21 is, for example, a single-cylinder 4-cycle engine, and it is provided with a horizontally disposed cylinder 22 and a vertically disposed crankshaft 23.
  • a starter case 25, an intake manifold 26, a carburetor 27 and an outboard-motor-side fuel tank 29, etc. are installed around the engine 21.
  • a drive shaft 30 is vertically installed inside the upper case 9 and lower case 10, its upper end is connected to the crankshaft 23, and its lower end is connected via a bevel gear 31 to a propeller shaft 32.
  • a shift rod 33 and a cooling water supply pipe 35 are vertically installed in the upper case 9, and the lower end of the cooling water supply pipe 35 is connected to a cooling water pump 36.
  • Fig. 3 is an enlarged cross-section of the upper part of Fig. 2
  • Fig. 4 is a front view of the engine of Fig. 3
  • Fig. 5 (A) is a rear view of the engine of Fig. 3.
  • 5 (B) is an enlarged cross-section of portion X of Fig. 5 (A).
  • Fig. 6 is a bottom view of the engine of Fig. 3
  • Fig. 7 is a cross-sectional view showing the connection structure of a connector
  • Fig. 8 is for the purpose of describing the operation.
  • the bottom cowling 12 is fitted to the engine connection member 9a of the upper case 9 by means of bolts 14.
  • the engine 21 consists of a cylinder head 21a, a head cover 21b, a cylinder case 21c and a crankcase 21d, which also serves as an oil pan, and it has a piston 21e which is connected to the crankshaft 23, an intake valve 21f, an exhaust valve 21g and an exhaust passage 21h.
  • the intake port 26a of the intake manifold 26 opens downward.
  • a fuel changeover cock 37 constituted by a three-way changeover valve is installed on the bottom surface of the bottom cowling 12, and it is possible to effect changeover of the fuel supply from the boat-side and the outboard-motor-side fuel tank by means of a changeover lever 37a.
  • the changeover lever 37a extends through the bottom cowling 12 to the outside of the outboard motor casing. It is arranged at a lower portion thereof on or close to the front side of the outboard motor.
  • a connector 39 for connection of a pipe from the boat-side fuel tank is mounted on the front surface of the bottom cowling 12.
  • a push pin 39a and an engagement pin 39b are provided on this connector 39.
  • the connector 39 is arranged close to the changeover cock 37 and lever 37a so as to keep the piping therebetween short and compact.
  • the connector 39 can be connected to a connector 56 which is fitted to the end of a fuel supply pipe 55 of the fuel tank on the boat side.
  • This connector 56 has inside it a ball valve 56b which is loaded by a spring 56a, a valve seat 56c for the ball valve 56b and an engagement hole 56d in which the engagement pin 39b can be engaged, and it has a hook 56e which retains the engagement pin 39b.
  • the push pin 39a pushes the ball valve 56b, so allowing fuel to flow.
  • the fuel tank 29 is installed in close proximity to the front surface of the engine body (21c, 21d), its upper portion extends upward from the side surface of the starter case 25, projects at the upper surface of the top cowling 13 and is pushed against the top cowling 13 via packing 40 for sealing, an oil supply cap 41 is screwed onto the top end of the fuel tank 29, and an air bleed cap 42 is screwed onto the oil supply cap 41.
  • brackets 29a and 29b on the engine body (21c, 21d) side are formed integrally with a side surface of the fuel tank 29, and one bracket 29c is integrally formed at the bottom surface.
  • brackets 25a and 25b formed integrally with opposite side surfaces of the starter case 25 pipes 43a and 43b are formed integrally with the cylinder case 21c, and a pipe 43c is formed integrally with the crankcase 21d.
  • the bracket 25a and 25b at the sides of the starter case 25 and the side-surface brackets 29a and 29b of the fuel tank 29 are brought into contact and fixed to the pipes 43a and 43b on the engine body side by bolts 45, and the bracket 29c at the bottom surface of the fuel tank 29 is fixed to the pipe 43c on the engine body side by a bolt 45.
  • this fixing structure as shown in Fig. 5, transmission of engine vibration to the fuel tank 29 is prevented by fitting a collar 46 between the bolt 45 and pipe 43b and providing bushes 47 of elastic material such as rubber, etc. between the bracket 25b and the bracket 29b and between the bracket 29b and the pipe 43c.
  • a fuel supply port 29d is formed at the bottom surface of the fuel tank 29.
  • One inlet port of the fuel changeover cock 37 is connected to the fuel supply port 29d by a pipe 49a, the other input port is connected to the connector 39 by a pipe 49b, the outlet port is connected by a pipe 49c to a fuel pump 50 (Fig. 5), and the fuel pump 50 is connected by a pipe 49d to the carburetor 27. This fuel pump 50 is driven by rotation of the crankshaft 23.
  • Fig. 3 cold air is taken in via an air take-in port 53 between the upper case 9 and the bottom cowling 12, and the fuel tank 29 is cooled, since the cold air passes around the fuel tank 29, as indicated by the arrows in the drawing.
  • Cold air from the air take-in port 53 between the upper case 9 and bottom cowling 12 is also taken into the intake port 26a.
  • the intake port 26a can take in fresh air easily, since it opens downward.
  • An air bleed port 51 which faces the carburetor 27 is formed in the top surface of the top cowling 13, and a cover 52 is fitted in a manner such that it covers this air bleed port 51, thus making it possible to exhaust air from inside the cowlings 12 and 13 but at the same time to prevent infiltration of water.
  • auxiliary fuel pump is the abovenoted manually actuated fuel pump 61
  • main fuel pump is the engine drive fuel pump 50.
  • Fig. 9 is a schematic drawing which illustrates another form of practice of the fuel supply system of the invention.
  • the abovedescribed fuel tank 60 on the boat side, auxiliary fuel pump (manually actuated fuel pump) 61, connectors 56 and 39, fuel changeover cock 37, fuel tank 29 on the outboard motor side, air bleed cap 42, main fuel pump (engine drive fuel pump) 50 and carburetor 27 are shown in Fig. 9.
  • a non-return valve 62 is installed on the downstream side of the auxiliary fuel pump 61, and the structure of the fuel changeover cock 37 is made such that the fuel tank 29 on the outboard motor side can be connected to the fuel tank 60 on the boat side and the main fuel pump 50.
  • the air bleed cap 42 is loosened and the auxiliary fuel pump 61 is actuated, fuel of the fuel tank 60 on the boat side is supplied to the fuel tank 29 on the outboard motor side, thus making supplementary supply of fuel possible.
  • the arrangement may also be that the non-return valve 62 is installed between the connector 39 and the fuel changeover cock 37.
  • the interior of the fuel tank 29 on the outboard motor side goes to negative pressure accompanying engine drive and consumption of the fuel in the fuel tank 29 on the outboard motor side, and the fuel tank 29 on the outboard motor side can be automatically replenished with fuel which is in the fuel tank 60 on the boat side.
  • the fuel tank on the outboard motor side is located at the front portion of the engine and a fuel changeover cock and a connector are located below this fuel tank, it is possible to instal the fuel supply parts compactly and to make the fuel piping short.
  • the fuel changeover cock can be installed by making use of the space inside a cover element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Claims (10)

  1. Außenbordmotoranordnung für ein Boot mit:
    einem Motor (21) auf der Außenbordmotorseite, und
    einem Kraftstoffzuführungssystem, das einen Kraftstofftank (60) hat, vorgesehen um auf der Bootseite installiert zu werden, einem Kraftstofftank (29) auf der Außenbordmotorseite, und einer Kraftstoffpumpe (50), um Kraftstoff zu dem Motor (21) zuzuführen,
    dadurch gekennzeichnet, daß
    der Kraftstofftank (29) auf der Außenbordmotorseite nahe zu einem Vorderabschnitt des Motors (21) installiert ist, wobei ein Kraftstoffumschalthahn (37) vorgesehen ist, um wahlweise den Kraftstofftank (29) auf der Außenbordmotorseite und den Kraftstofftank (60) auf der Bootseite zu der Kraftstoffpumpe (50) umzuschalten, wobei der Kraftstoffumschalthahn (37) unter dem Kraftstofftank (29) auf der Außenbordmotorseite installiert ist.
  2. Außenbordmotoranordnung nach Anspruch 1, dadurch gekennzeichnet, daß der Kraftstoffumschalthahn (37) an einem Abdeckbauteil (12), das den Motor (21) abdeckt, befestigt ist.
  3. Außenbordmotoranordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Kraftstoffumschalthahn (37) vorgesehen ist, um den Kraftstofftank (60) auf der Bootseite und der Kraftstofftank (29) auf der Außenbordmotorseite zu verbinden, und um durch eine Hilfskraftstoffpumpe (61) den Kraftstoffaustausch zwischen den Tanks (29, 60) zu unterstützen.
  4. Außenbordmotoranordnung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Kraftstoffumschalthahn (37) einen Umschalthebel (37a) zum Schalten des Umschalthahnes (37) aufweist, wobei der Umschalthebel (37a) angeordnet ist, um sich durch das Abdeckbauteil (12) zu der Außenseite des Gehäuses des Außenbordmotors an einem unteren Abschnitt an der Vorderseite des Außenbordmotors zu erstrecken.
  5. Außenbordmotoranordnung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß ein Verbinder (39) zum Verbinden eines Rohres (55) von dem Kraftstofftank (60) auf der Bootseite zu dem Umschalthahn (37) an der vorderen Oberfläche des Abdeckbauteiles (12) montiert ist.
  6. Außenbordmotoranordnung nach Anspruch 5, dadurch gekennzeichnet, daß das Rohr (55) von dem Kraftstofftank (60) auf der Bootseite lösbar mit dem Verbinder (39) durch einen Verbinder (56), eingesetzt an einem Endabschnitt des Rohres (55), gekuppelt ist, wobei der Verbinder (56) an dem Rohr (55) ein Rückschlagventil (56b) und eine Verriegelungseinrichtung (56e) zum Eingriff mit dem Verbinder (39) an dem Abdeckbauteil (12) enthält.
  7. Außenbordmotoranordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß Mittel (29a, 29b, 29c) zum Unterstützen des Kraftstofftanks (29) auf der Außenbordmotorseite an dem Motor einstückig an dem Tank (29) gebildet sind, wobei die Unterstützungsmittel (29a, 29b, 29c) an dem Motor durch elastische Mittel (46, 47) gelagert werden.
  8. Außenbordmotoranordnung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß eine Luftaufnahmeöffnung (53) in einem Bodenabschnitt des Gehäuses (9, 12, 13) des Außenbordmotors vorgesehen ist, wobei die Luftaufnahmeöffnung (53) im wesentlichen unter dem Kraftstofftank (29) auf der Außenbordmotorseite angeordnet ist, und daß das Innere des Außenbordmotors geformt ist, um Einlaßluft zu einer Einlaßöffnung (26) des Motors (26, 27) zu führen, um dadurch an dem Kraftstofftank (29) vorbeizugehen.
  9. Außenbordmotoranordnung nach einem der Ansprüche 3 bis 8, dadurch gekennzeichnet, daß ein Rückschlagventil (62) stromab der Hilfskraftstoffpumpe (61) installiert ist.
  10. Außenbordmotoranordnung nach Anspruch 9, dadurch gekennzeichnet, daß das Rückschlagventil (62) zwischen dem Verbinder (39) und dem Kraftstoffumschalthahn (37) angeordnet ist.
EP98111762A 1997-06-25 1998-06-25 Anordnung eines Aussenbordmotors für ein Boot Expired - Lifetime EP0887527B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP168730/97 1997-06-25
JP16873097 1997-06-25
JP16873097 1997-06-25
JP00481098A JP3932070B2 (ja) 1997-06-25 1998-01-13 船外機の燃料供給装置
JP481098 1998-01-13
JP4810/98 1998-01-13

Publications (3)

Publication Number Publication Date
EP0887527A2 EP0887527A2 (de) 1998-12-30
EP0887527A3 EP0887527A3 (de) 1999-06-09
EP0887527B1 true EP0887527B1 (de) 2002-11-20

Family

ID=26338649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98111762A Expired - Lifetime EP0887527B1 (de) 1997-06-25 1998-06-25 Anordnung eines Aussenbordmotors für ein Boot

Country Status (3)

Country Link
EP (1) EP0887527B1 (de)
JP (1) JP3932070B2 (de)
DE (1) DE69809499T2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3909664B2 (ja) * 2001-10-19 2007-04-25 本田技研工業株式会社 自動二輪車の燃料供給装置
JP2010101488A (ja) 2008-09-18 2010-05-06 Yamaha Motor Co Ltd 船外機の燃料供給システムおよび船外機
US20160252051A1 (en) * 2013-12-06 2016-09-01 Sikorsky Aircraft Corporation Bubble collector for suction fuel system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506649A (en) * 1983-10-03 1985-03-26 Outboard Marine Corporation Vent system
US5913294A (en) * 1995-11-24 1999-06-22 Sanshin Kogyo Kabushiki Kaisha Outboard motor fuel supply system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6250295A (ja) * 1985-08-29 1987-03-04 Sanshin Ind Co Ltd 船外機の燃料供給装置
JPS6393695A (ja) * 1986-10-07 1988-04-23 Sanshin Ind Co Ltd 船舶推進機の液体タンク格納構造
JPH01301913A (ja) * 1988-05-30 1989-12-06 Sanshin Ind Co Ltd タンク内蔵型船外機
JPH02256867A (ja) * 1989-03-29 1990-10-17 Tonen Corp 火花点火エンジン用燃料切換弁

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506649A (en) * 1983-10-03 1985-03-26 Outboard Marine Corporation Vent system
US5913294A (en) * 1995-11-24 1999-06-22 Sanshin Kogyo Kabushiki Kaisha Outboard motor fuel supply system

Also Published As

Publication number Publication date
JPH1172056A (ja) 1999-03-16
EP0887527A2 (de) 1998-12-30
EP0887527A3 (de) 1999-06-09
JP3932070B2 (ja) 2007-06-20
DE69809499T2 (de) 2003-03-27
DE69809499D1 (de) 2003-01-02

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