EP2072797B1 - Structure de pompe à carburant pour motocyclette - Google Patents

Structure de pompe à carburant pour motocyclette Download PDF

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Publication number
EP2072797B1
EP2072797B1 EP07024696A EP07024696A EP2072797B1 EP 2072797 B1 EP2072797 B1 EP 2072797B1 EP 07024696 A EP07024696 A EP 07024696A EP 07024696 A EP07024696 A EP 07024696A EP 2072797 B1 EP2072797 B1 EP 2072797B1
Authority
EP
European Patent Office
Prior art keywords
fuel pump
fuel
main body
adjustment mechanism
pump
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.)
Not-in-force
Application number
EP07024696A
Other languages
German (de)
English (en)
Other versions
EP2072797A1 (fr
Inventor
Shiow-Pyng Ke
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.)
Kwang Yang Motor Co Ltd
Original Assignee
Kwang Yang Motor Co Ltd
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 Kwang Yang Motor Co Ltd filed Critical Kwang Yang Motor Co Ltd
Priority to EP07024696A priority Critical patent/EP2072797B1/fr
Publication of EP2072797A1 publication Critical patent/EP2072797A1/fr
Application granted granted Critical
Publication of EP2072797B1 publication Critical patent/EP2072797B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/103—Mounting pumps on fuel tanks
    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/50—Filters arranged in or on fuel tanks

Definitions

  • the present invention relates to a motorcycle fuel pump, and in particular to a fuel pump structure that allows adjustment of the distance between the fuel pump and the bottom of a fuel tank in which the fuel pump is installed.
  • a motorcycle incorporating a fuel injection engine requires a fuel pump.
  • a conventional fuel tank 1 is provided with a fuel pump mount 11.
  • Out-feeding of fuel from the tank 1 is generally performed by a fuel pump 12 mounted to the tank 1 by the fuel pump mount 11.
  • the fuel pump 12 is generally located inside the tank 1 and has an inlet 121 to which a filter net 13 is mounted for filtering the fuel drawn in to the fuel pump 12 in order to ensure the supply of clean fuel to a fuel injection device of the engine.
  • the design of motorcycle must be innovated frequently, which leads to change and modification of outside look and internal parts of the motorcycle. Once the design of the fuel tank 1 is changed, the fuel pump 12 must be modified accordingly, in order to ensure the filter net 13 of the fuel pump 12 is always located in proximity to the bottom of the fuel tank 1 to carry out filtering of the fuel drawn into the fuel pump 12.
  • the fuel pump 20 comprises a cover 21 forming a flange 211 and an insertion cylindrical portion 212 extending therefrom.
  • the insertion cylindrical portion 212 defines in a wall thereof retention holes 213.
  • the flange 211 serves to fix the fuel pump 20 to a fuel tank 2.
  • the fuel pump 2 comprises a pump shade 22, from which a frame 221 extends.
  • the frame 221 is further extended and terminates at a support barrel 222 that forms pawls 223 for engaging the retention holes 213 of the insertion cylindrical portion 212 of the cover 21.
  • the pump shade 22 also forms retention holes 224 which engage the pawls 225 formed on the frame 221 to couple the pump shade 22 to the frame 221.
  • the fuel pump 20 is connected to a fuel discharge pipe 25 by a connection tube 24 for out-feeding of fuel from the tank 2.
  • the fuel pump 2 is applicable to various types of tanks 2.
  • the fuel pump 2 of this type although applicable to different designs of fuel tank, still need to change or modify two of the components thereof, namely the connection tube 24 and the pump shade 22. Since the pump shade 22 is often made by plastic injection molding, once the shade 22 must be changed for increased length, the mold used in the injection molding for the shade 22 must be completely replaced. This increases the costs of molds and eventually adds to the overall manufacturing costs.
  • US-A-2 963 203 (HOELLE JAMES C ) discloses a fuel pump mounting in which a motor-pump unit is suspended from above and in which the unit is readily insertable and removable from the mounting.
  • a fuel pump mounting is not firm in structure and will oscillate in operation thereby making it unfit for practical use.
  • the primary purpose of the present invention is to provide a motorcycle fuel pump, which comprises a main body and a cover, which is fixed to a top of a fuel tank.
  • the main body forms a fuel discharge outlet, which is connected by a high pressure fuel hose to a connection tube of the cover.
  • a filter is mounted to a lower end of the main body.
  • a lower portion of the main body is fit to a fuel pump support.
  • the fuel pump support has an outer surface on which locking sets are formed.
  • An adjustment mechanism is mounted to the cover and forms a plurality of adjustment openings to selectively and releasably engage the respective locking sets to thereby set the fuel pump at different depth inside a fuel tank.
  • the filter that is mounted to the lower end of the main body can always be set at a location close to the bottom of the fuel tank for drawing fuel into the pump. Further, the location adjustability of the main body of the fuel pump also helps to reduce the costs for making new molds that are used to mold parts of the fuel pump in case that a new design of fuel tank is adopted.
  • a motorcycle generally designated at 3, comprises a seat 31 under which a storage box 32 is formed.
  • a power unit 4 is further arranged below the storage box 32.
  • the motorcycle 3 further comprises a footstep 33 below which a fuel tank 5 for containing therein fuel for the motorcycle 3.
  • the operation of the motorcycle 3 is that fresh air is drawn through an air filter 34 to remove dirt and foreign objects therefrom for supply of clean air to mix the fuel supplied from the fuel tank in a carburetor for forming an air-fuel mixture.
  • the air-fuel mixture is fed into a combustion chamber of an engine 41 of the power unit for combustion, which generates mechanical power to drive the rotation of a crankshaft.
  • the crankshaft in turns rotates, via a gear-based transmission system, a rear wheel RW, which in turn causes the rotation of a front wheel FW to move the motorcycle 3 forward.
  • the fuel tank 5 is provided with a fuel in-feeding pipe 51, a level gauge mount 52, and a fuel pump 6.
  • the fuel in-feeding pipe 512 functions to receive filling of fuel fro replenishment of the tank 5.
  • the level gauge mount 52 functions to retain a level gauge, which detects the residual amount of fuel inside the tank 5 and displays the result of detection on for example a dashboard or on a fuel meter.
  • the fuel pump 6 is provided, comprising a main body 61, a cover 62, a filter net 63, a fuel pump support 64, and an adjustment mechanism 65.
  • the main body 61 forms, on a top thereof, a fuel discharge outlet 611 and is provided, at a bottom thereof, with the filter net 63. A lower portion of the main body 61 is set on the fuel pump support 64.
  • the cover 62 is fixed to a top surface of the fuel tank 5 and comprises a connection tube seat 621 extending from an underside thereof.
  • the connection tube seat 621 is coupled to a connection tube 6211, which has an upper end forming a flange 6211 a.
  • a high-pressure fuel hose P is fit onto the connection tube 6211 and is also connected to the fuel discharge outlet 611 of the main body 61.
  • the underside of the cover 62 also forms a plurality of threaded members 622, preferably in the form of internally-threaded projections, for engaging threaded fasteners S of the adjustment mechanism 65.
  • the filter net 63 which is arranged on the bottom of the main body 61 of the fuel pump 6, is located close to the bottom of the fuel tank 5 to allow the filter net 63 to filter out impurities entraining fuel flowing into the fuel pump 6 thereby ensuring supply of clean fuel to the engine 41.
  • the fuel pump support 64 comprises a cylindrical body fit over a lower portion of the main body 61 of the fuel pump 6.
  • the fuel pump support 64 can be made of plastics by injection molding and forms, on an outer surface thereof, two locking sets 641 on opposite sides of the fuel pump support 64.
  • Each locking set 641 comprises two vertical tabs 6411 extending sideways from the side surface of the fuel pump support 64.
  • Each tab 6411 forms, on an upper portion thereof, a further sideways extending barb 6412.
  • the barbs 6412 are arranged to face opposite directions.
  • the adjustment mechanism 65 comprises two boards made of for example plastics or metals and arranged to be opposite to each other.
  • Each board of the adjustment mechanism 65 forms a frame 651 in which a plurality of adjustment openings 654 lined up vertically
  • the openings 654 are preferably rectangular in shape and engageable with the barbs 6412 of the corresponding locking set 641 of the fuel pump support 64.
  • Each board of the adjustment mechanism 65 forms on an upper end thereof a fixing section 652 in which holes 6521 corresponding to the threaded members 622 of the cover 62 are defined.
  • the fixing section 652 forms an extension in which an engaging portion 653 is formed.
  • the engaging portion 653 is arranged to engage and abut against the flange 6211 a of the connection tube 6211.
  • the fuel pump support 64 is first fit over the lower portion of the main body 61 of the fuel pump 6 and the adjustment openings 654 of the frames 651 of the adjustment mechanism 65 are pressed to fit over the barbs 6412 of the locking sets 641 of the fusel pump support 64, whereby the barbs 641 of each locking set 641 respectively engage opposite sides of a selected one of the openings 654 of the corresponding frame 651.
  • the adjustment mechanism 65 is attached to the fuel pump support 64.
  • the high pressure fuel hose P is then fit, with opposite ends thereof, over the connection tube 6211 and the fuel discharge outlet 611, respectively.
  • the threaded fasteners S are set through the holes 6521 of the fixing sections 651 of the adjustment mechanism 65 and engage the corresponding threaded members 622 on the underside of the cover 62, with the engaging portions 653 of the adjustment mechanism 65 clamping onto the connection tube 6211 extending from the connection tube seat 621.
  • the frames 651 of the adjustment mechanism 65 are separated from the fuel pump support 64 by disengaging the barbs 6412 from the opposite sides of the adjustment opening 654.
  • the tabs 6411 that support the barbs 6412 or the barbs 6421 themselves are made resilient and elastically deformable.
  • the frames 651 are allowed to move relative to the fuel pump support 64 to have the barbs 6412 engaging another one of the adjustment openings 654 thereby setting the main body 61 of the fuel pump 6 that is carried by the fuel pump support 64 at a different position with respect to the frames 651 that are secured to the underside of the cover 62, which is in turn fixed to the top surface of the fuel tank 5.
  • the main body 61 of the fuel pump 6 can be set at a location accommodating the depth change of the fuel tank 5 and the filter net 63 is again positioned close to the bottom of the fuel tank 5.
  • the high pressure fuel hose P is then replaced with one of a suitable length sufficiently extending from the connection tube 6211 to the fuel discharge outlet 611 of the main body 61 of the fuel pump 6.
  • the effectiveness of the present invention resides in that the location of the main body 61 of the fuel pump 6 in the depth direction of the fuel tank 5 can be easily adjusted by means of the adjustment mechanism 65, which comprises two frames 651, preferably arranged in a symmetric or opposite manner, and a fuel pump support 64 arranged on the lower portion of the main body 61 of the fuel pump 6, wherein the fuel pump support 64 has, on opposite sides thereof, two locking sets 641 forming barbs 6412 to selectively engage vertically arranged openings 654 formed in the respective frames 651. Therefore, in change of design of the fuel tank, there is no need to remold the components of the fuel pump and associated parts thereof, thereby saving costs. Further, the main body 61 of the fuel pump 6 can be securely fixed inside the fuel tank with the filter net 63 of the fuel pump 6 surely located close to the bottom of the fuel tank 5 to realize filtering of fuel drawn into the fuel pump.

Landscapes

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

Claims (4)

  1. Un pompe à carburant (6) comprenant le corps de base (61) ayant l'extrémité supérieure formant un exutoire de décharge du carburant (611), le couvercle (62) ayant la face inférieure formant un tuyau de connexion (6211) correspondant à l'exutoire de décharge du carburant (611), la face inférieure formant également plusieurs éléments filetés (622), et un filet de filtre (63) monté à l'extrémité inférieure du corps de base (61), caractérisé par ce que la partie inférieure du corps de base (61) est fixée sur un support du pompe à carburant (64) ayant la surface extérieure sur laquelle deux ensembles de verrouillage (641) sont formés sur les côtés opposés du support du pompe à carburant (64), chacun des ensembles de verrouillage (641) ayant deux languettes verticales (6411) s'étendant latéralement à partir des surfaces latérales du support du pompe à carburant (64), chacune des languettes verticales (6411) ayant la partie supérieure formant une contrepointe (6412), et un mécanisme de réglage (65) fixé aux éléments filetés (622) du couvercle (62) et comprenant deux panneaux, chacun ayant une ossature (651) fournie de plusieurs orifices de réglage (654), l'ossature (651) du mécanisme de réglage (65) comprenant une section de fixation (652), la section de fixation (652) formant une partie d'engagement (653), la contrepointe (6412) des ensembles de verrouillage (641) étant engagée d'une manière libérable et sélective en prise avec un des orifices de réglage (654) du mécanisme de réglage (65) fixant ainsi le corps de base (61) du pompe à carburant (6) à un emplacement correspondant par rapport au couvercle (62).
  2. Selon l'affirmation 3, le pompe à carburant (6), la partie d'engagement (653) duquel engage et bute contre une bride (6211a) du tuyau de connexion (6211).
  3. Selon l'affirmation 1, le pompe à carburant (6), les orifices de réglage (654) duquel ont la forme rectangulaire.
  4. Selon l'affirmation 1, le pompe à carburant (6), les panneaux du mécanisme de réglage (65) duquel sont fabriqués en plastique ou en métal.
EP07024696A 2007-12-20 2007-12-20 Structure de pompe à carburant pour motocyclette Not-in-force EP2072797B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07024696A EP2072797B1 (fr) 2007-12-20 2007-12-20 Structure de pompe à carburant pour motocyclette

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07024696A EP2072797B1 (fr) 2007-12-20 2007-12-20 Structure de pompe à carburant pour motocyclette

Publications (2)

Publication Number Publication Date
EP2072797A1 EP2072797A1 (fr) 2009-06-24
EP2072797B1 true EP2072797B1 (fr) 2012-05-16

Family

ID=39769311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07024696A Not-in-force EP2072797B1 (fr) 2007-12-20 2007-12-20 Structure de pompe à carburant pour motocyclette

Country Status (1)

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EP (1) EP2072797B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010039546A1 (de) * 2010-08-20 2012-02-23 Robert Bosch Gmbh Kraftstoff-Fördereinheit mit asymmetrischer Führungsstange

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2370590A (en) * 1942-04-03 1945-02-27 Carter Carburetor Corp Motor pump unit
US2963203A (en) 1958-11-21 1960-12-06 Tokheim Corp Fuel pump mounting
US3193151A (en) * 1962-12-14 1965-07-06 Acf Ind Inc Mounting for fuel pump
JP4875398B2 (ja) * 2006-04-21 2012-02-15 株式会社ケーヒン 燃料供給モジュール

Also Published As

Publication number Publication date
EP2072797A1 (fr) 2009-06-24

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