WO2000000735A1 - Dispositif d'alimentation en combustible pour dispositif d'injection de combustible a commande electronique - Google Patents

Dispositif d'alimentation en combustible pour dispositif d'injection de combustible a commande electronique Download PDF

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Publication number
WO2000000735A1
WO2000000735A1 PCT/JP1999/002495 JP9902495W WO0000735A1 WO 2000000735 A1 WO2000000735 A1 WO 2000000735A1 JP 9902495 W JP9902495 W JP 9902495W WO 0000735 A1 WO0000735 A1 WO 0000735A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
pump
pressure
electronically controlled
supply device
Prior art date
Application number
PCT/JP1999/002495
Other languages
English (en)
Japanese (ja)
Inventor
Naoki Kobayashi
Original Assignee
Mikuni Corporation
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 Mikuni Corporation filed Critical Mikuni Corporation
Publication of WO2000000735A1 publication Critical patent/WO2000000735A1/fr

Links

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
    • 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
    • F02M37/44—Filters structurally associated with pumps
    • 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
    • F02M37/46—Filters structurally associated with pressure regulators
    • 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
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/54—Arrangement of fuel pressure regulators

Definitions

  • the present invention relates to a fuel supply device that supplies fuel to an electronically controlled fuel injection device of an engine, and more particularly to a fuel supply device that is low in cost and easy in pipe maintenance.
  • a fuel pump is used as a fuel supply device to pressurize and inject fuel, a fuel filter that removes dust from the pressurized fuel, and the pressure of the pressurized fuel.
  • a fuel pressure regulation In order to keep the fuel pressure constant, it is necessary to perform a fuel pressure regulation.
  • the components constituting the fuel supply device have been integrally housed in a fuel tank.
  • the fuel for an automobile engine proposed in Japanese Patent Publication No. 6-1200, Japanese Patent Application Laid-Open No. 8-193552, and Japanese Patent Application Laid-Open No. 8-210212 is disclosed.
  • the supply unit is a fuel pump, a fuel filter, and a fuel pressure regulator that are integrated into a fuel tank lid and placed inside the fuel tank.
  • the motorcycle fuel supply device proposed in Japanese Patent Application Laid-Open No. 57-107762 has an inline fuel pump disposed below the fuel tank and is disposed separately from the fuel pump.
  • the fuel is supplied to the delivery pipe extending in the direction in which the cylinders of the engine are arranged through the fuel filter.
  • One end of the delivery pipe is fitted with a fuel pressure regulator, and the fuel return pipe from the fuel pressure regulator is open into the fuel tank.
  • the types of fuel pumps used in electronically controlled fuel injection systems include turbine pumps and roller vane pumps. Turbine pumps have low pulsation, low noise, simple structure, and low manufacturing cost. Therefore, it is currently widely used as a fuel pump. However, due to the low suction pressure, only turbine type pumps immersed in fuel have been produced.
  • the fuel supply system proposed in Japanese Patent Application Laid-Open No. 57-107762 uses an in-line type fuel pump (a pump suction port connected to a fuel pump by a pipe). Therefore, there was a problem that one-bottle pumps with low suction pressure could not be used. In addition, since the fuel pump was exposed to the outside, there was also a problem that it was corroded by rainwater and was damaged by stepping stones. In addition, there was a problem that the piping became complicated and the appearance became poor.
  • the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to use a low-noise turbine fuel pump with low production cost, and furthermore, the fuel pump is corroded by rainwater or has a stepping stone. An object of the present invention is to provide a fuel supply device which is not damaged by the fuel supply device.
  • Another object of the present invention is to provide a fuel supply device which has good maintainability when used in a motorcycle and has a high degree of freedom in designing a fuel tank. Disclosure of the invention
  • the fuel supply device for an electronically controlled fuel injection device includes a fuel pump housed in a fuel chamber disposed below a fuel tank, and a flow path from a fuel tank on a suction side of the fuel pump. It features a fuel return flow path from the fuel pressure regulation.
  • At least one of a fuel filter and a fuel pressure regulator is housed in the fuel chamber or is integrally attached to the fuel chamber.
  • the fuel chamber is made of resin.
  • the fuel pump is a turbine type pump.
  • FIG. 1 is a sectional view showing a fuel supply device for an electronically controlled fuel injection device according to a first embodiment of the present invention.
  • FIG. 3 is a layout view showing a mounting state of the fuel supply device for the electronic control fuel injection device.
  • FIG. 4 is a layout view showing a mounting state of a fuel supply device for an electronically controlled fuel injection device according to a second embodiment of the present invention.
  • FIG. 9 is a layout view showing a mounting state of a fuel supply device for an electronically controlled fuel injection device according to a third embodiment of the present invention.
  • FIG. 1 is a sectional view showing a fuel supply device for an electronically controlled fuel injection device according to a first embodiment of the present invention.
  • Numeral 12 shown in the figure is a turbine type fuel pump, which is housed in a resin pump cover 13 while being supported by stays 13a, 13a.
  • the pump cover 13 is provided with a fuel inlet nipple 11 at the top, and one end is fitted with a resin connector block 14 and sealed with a ring 19 to form a fuel chamber.
  • the fuel inlet nipple 11 is connected to a fuel tank and introduces fuel into the fuel chamber via a low-pressure filter 26. That is, the fuel chamber is filled with the fuel from which dust has been removed by the low-pressure filter.
  • the coupler 16 fitted to the connector block 14 is fitted to the fuel pump discharge port 12 b with the packing 24 interposed, and is further fitted to the inflow port of the high-pressure fuel filter 15.
  • a 0-ring 21 is fitted to a fitting portion between the coupler 16 and the inlet of the high-pressure fuel filter 15.
  • the high-pressure fuel filter cover 18 is fitted with the connector block 14 and the fuel pressure regulator body 17 and sealed with the 0 ring 20 and the 0 ring 22 to house the high pressure fuel filter 15 respectively. Forms a space
  • the discharge port of the high-pressure fuel filter 15 is fitted with the fuel pressure regulator body 17 and the 0 ring 23 is interposed therebetween.
  • a fuel pressure regulator 17a is attached to the fuel pressure regulator body 17 and a fuel outlet nipple 17b is formed.
  • the fuel pressure regulator 17a is composed of a valve sheet 17d attached to the fuel pressure regulator body 17 and a valve 17e that is energized by a compression coil spring 17g via a diaphragm 17f. I have.
  • the diaphragm 17 f When the fuel pressure in the fuel pressure regulator body 17 increases, the diaphragm 17 f is pushed rightward against the elasticity of the compression coil spring 17 g, and the valve 1 e moves away from the valve seat 17 d. Fuel pressure is regulated through the gap by keeping the fuel pressure inside the body 17 constant.
  • the nipple 17 c for the reference hose provided in the fuel pressure regulator 17 a is connected to the reference pressure source.
  • the back pressure of the diaphragm 17 f is maintained at the reference pressure.
  • the connector pin 25 attached to the connector block 14 is fastened to the input terminal of the fuel pump 12 and connects the fuel pump 12 to a power supply.
  • the fuel pump 12 rotates, fuel flows in the direction indicated by the arrow. That is, the fuel pump 12 sucks the fuel from the suction port 12a and sends it to the high-pressure fuel filter 15 from the discharge port 12b via the coupler 16.
  • the fuel flowing out of the high-pressure fuel filter 15 flows into the fuel pressure regulator body 17, and a part of the fuel flows through the high-pressure fuel filter cover 18, the connector block 14, and the pump cover 13 by the fuel pressure regulator 17 a.
  • the pressure in the fuel pressure regulator body 17 is returned to 12a, and is kept constant.
  • the fuel having a constant pressure is supplied to the engine through the fuel outlet nipple 17b.
  • FIG. 2 shows a state where the fuel supply device is used for a motorcycle.
  • the fuel pump 12, the high-pressure fuel filter 15, and the fuel pressure regulator 17 a constitute a fuel supply device having an integral structure, but are disposed below the fuel tank 1. Connected to each device by hose or pipe.
  • the cock 2 provided at the lower part of the fuel tank 1 is connected to the fuel chamber containing the fuel pump 12 by the fuel suction hose 3, and the fuel is filled in the fuel chamber.
  • the fuel outlet nipple 17 b of the fuel pressure regulator body 17 is connected to the delivery pipe 5 by a fuel supply pipe 10.
  • the injectors 6, 6,... Attached to the delivery pipe 5 inject fuel into the throttle bodies 1, 7, 7,.
  • the throttle body 16 is connected to the fuel pressure regulator 17a by a reference hose 8, and the back pressure of the fuel pressure regulator 17a is maintained at the reference pressure.
  • Fig. 5 shows the layout of a conventional carburetor-type fuel supply system. Fuel is supplied to the carburetors 4, 4, ... arranged below the fuel tank 1 via the cock 2 and the fuel suction hoses 3, 3. Since the fuel supply device of the above-described embodiment can be disposed at the place where the vaporizers 4, 4... Of the conventional vaporizer-type fuel supply device are disposed, the fuel supply device of the embodiment is Compatibility with specifications can be provided.
  • FIG. 3 shows a second embodiment of the present invention.
  • the fuel pump 12 and the high-pressure fuel filter 15 are integrated as in the first embodiment, and the fuel pump 12 is housed in a fuel chamber and arranged below the fuel tank 1. And with the first embodiment Similarly, fuel is supplied from the fuel tank 1 into the fuel chamber via the cock 2 and the fuel suction hose 3.
  • the outflow side of the high-pressure fuel filter 15 is connected to the delivery pipe 5 by a fuel supply pipe 10.
  • the fuel pressure regulator 17 a is mounted on the delivery pipe 5, and its fuel return port is connected to the fuel chamber by a fuel return hose 9.
  • the back pressure side of the diaphragm of the fuel pressure regulator 17a is connected to the throttle body 17 by a reference hose 8. Even with such a configuration, a one-bin fuel pump can be used.
  • FIG. 4 shows a third embodiment of the present invention.
  • the fuel pump 12 and the high-pressure fuel filter 15 are separate bodies and are connected by piping.
  • the fuel pump 12 is housed in the fuel chamber and is arranged below the fuel tank 1. Then, as in the first embodiment, fuel is supplied from the fuel tank 1 into the fuel chamber via the cock 2 and the fuel suction hose 3.
  • the outflow side of the high-pressure fuel filter 15 is connected to the delivery pipe 5 by a fuel supply pipe 10.
  • the fuel pressure regulator 17a is attached to the delivery pipe 5, and its fuel return port is connected to the fuel chamber by the fuel return hose 9.
  • the diaphragm back pressure side of the fuel pressure regulator 17a is connected to the throttle body 1 by the reference hose 8. Even with this configuration, a one-bin fuel pump can be used.
  • the present invention is applied to a motorcycle.
  • the present invention can be applied to an engine of another type of vehicle or the like.
  • the effect of the present invention is enhanced when used in a snowmobile / personal watercraft (PWC) because corrosion of the fuel pump is prevented.
  • PWC personal watercraft
  • a low-noise, low-noise turbine-type fuel pump can be used, and the fuel pump is corroded by rainwater or damaged by stepping stones. None.
  • the fuel tank that supplies fuel to the carburetor using conventional gravity can be used as it is.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un dispositif d'alimentation en combustible dans lequel une pompe (12) à combustible est montée dans des chambres (13, 14) de combustible agencées sous un réservoir de combustible, et un chemin d'écoulement (11) depuis le réservoir de combustible ainsi qu'un chemin d'écoulement de retour de combustible à partir d'un régulateur (17a) de pression du combustible sont disposés du côté aspiration (12a) de la pompe (12) à combustible, ce qui permet de réduire le coût de production, une pompe à combustible du type à turbine à faible bruit pouvant être utilisée, et la pompe à combustible n'étant pas corrodée par l'eau de pluie ni détériorée par des éclats de roche.
PCT/JP1999/002495 1998-06-30 1999-05-14 Dispositif d'alimentation en combustible pour dispositif d'injection de combustible a commande electronique WO2000000735A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10199815A JP2000018114A (ja) 1998-06-30 1998-06-30 電子制御燃料噴射装置用燃料供給装置
JP10/199815 1998-06-30

Publications (1)

Publication Number Publication Date
WO2000000735A1 true WO2000000735A1 (fr) 2000-01-06

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Application Number Title Priority Date Filing Date
PCT/JP1999/002495 WO2000000735A1 (fr) 1998-06-30 1999-05-14 Dispositif d'alimentation en combustible pour dispositif d'injection de combustible a commande electronique

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JP (1) JP2000018114A (fr)
WO (1) WO2000000735A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004025111A1 (fr) * 2002-09-04 2004-03-25 Robert Bosch Gmbh Unite servant a acheminer du carburant entre un reservoir de carburant et un moteur a combustion interne d'un vehicule automobile

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6780135B2 (ja) * 2017-12-14 2020-11-04 本田技研工業株式会社 燃料供給装置
JP6991430B2 (ja) * 2017-12-28 2022-01-12 カワサキモータース株式会社 ハイブリッド式の鞍乗型車両

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5710762A (en) * 1980-06-24 1982-01-20 Honda Motor Co Ltd Fuel injector for motor cycle
JPH0249965A (ja) * 1988-08-12 1990-02-20 Japan Electron Control Syst Co Ltd 燃料供給装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5710762A (en) * 1980-06-24 1982-01-20 Honda Motor Co Ltd Fuel injector for motor cycle
JPH0249965A (ja) * 1988-08-12 1990-02-20 Japan Electron Control Syst Co Ltd 燃料供給装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004025111A1 (fr) * 2002-09-04 2004-03-25 Robert Bosch Gmbh Unite servant a acheminer du carburant entre un reservoir de carburant et un moteur a combustion interne d'un vehicule automobile

Also Published As

Publication number Publication date
JP2000018114A (ja) 2000-01-18

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