WO2004092572A1 - 燃料供給装置 - Google Patents
燃料供給装置 Download PDFInfo
- Publication number
- WO2004092572A1 WO2004092572A1 PCT/JP2004/005164 JP2004005164W WO2004092572A1 WO 2004092572 A1 WO2004092572 A1 WO 2004092572A1 JP 2004005164 W JP2004005164 W JP 2004005164W WO 2004092572 A1 WO2004092572 A1 WO 2004092572A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- plunger
- discharge
- vapor
- filter
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
- F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
- F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow
- F04B17/044—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow using solenoids directly actuating the piston
-
- 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
- F02M37/20—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 characterised by means for preventing vapour lock
-
- 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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
- F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
- F04B17/048—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing around the moving part of the motor
Definitions
- the present invention relates to a fuel supply device provided with an electromagnetically driven plunger pump, and more particularly to a fuel supply device applied to supply fuel to an engine or a heater for a vehicle.
- a conventional fuel supply device that supplies fuel to a combustor such as a heater, as shown in Fig. 5, the fuel in a fuel tank 1 is guided to a filter unit 3 by a feed pipe 2 and the filtered fuel is electromagnetically supplied.
- a pump that sucks and pumps with a driven plunger pump 4 and supplies it to a combustor 5 is known.
- the plunger pump 4 includes a plunger 4b that reciprocates in a cylinder 4a, a coil 4c for excitation, a yoke 4d, and a coil spring that biases the plunger 4a (not shown).
- the suction and discharge of fuel is performed by opening and closing the check valve by the pressure difference between the spaces located before and after the plunger 4b (see, for example, Japanese Patent Application Laid-Open No. H11-218706). ).
- the fuel leaking from the outer periphery of the plunger 4b toward the upstream side (rearward) during the pressure feeding is rapidly reduced in pressure, and the heat generated from the coil 4c when energized.
- the fuel is heated by the frictional heat generated by the sliding of the plunger 4b, and the vapor is continuously generated.
- the present invention has been made in view of the above circumstances, and it is an object of the present invention.
- the generated vapor can be efficiently discharged, and by using this generated vapor to cool the fuel, it is possible to improve the pump discharge performance especially at high temperatures. It is to provide a device. Disclosure of the invention
- a fuel supply device includes a filter for filtering fuel guided from a fuel tank, a plunger that reciprocates in a predetermined direction by electromagnetic force, a cylinder that accommodates the plunger reciprocally and that defines a pump chamber, and a pump.
- a plunger pump including a suction valve for permitting suction of fuel into the chamber, a discharge valve for permitting discharge of fuel from the pump chamber, and a plunger pump for sucking and discharging fuel.
- a fuel reservoir for temporarily storing fuel on the upstream side of the suction valve is provided integrally, and between the cylinder and the fuel reservoir, fuel leaking from the outer periphery of the plunger or generated vapor is provided.
- a discharge passage for discharging toward the fuel reservoir is provided.
- the fuel filtered by the filter is temporarily stored in the fuel storage portion, is drawn into the pump chamber from the suction valve by the reciprocating motion of the plunger, and is discharged from the discharge valve. At this time, the fuel leaked from the outer periphery of the plunger to the space on the other end side of the plunger or the generated vapor is discharged to the fuel reservoir through the discharge passage.
- the vapor can be prevented from being discharged together with the fuel, and the fuel in the fuel reservoir can be cooled by the vapor, so that the pump discharge performance especially at high temperatures can be improved.
- the fuel reservoir is provided integrally with the plunger pump, the fuel cooled by the vapor can be quickly guided to the pump chamber while suppressing the influence of the external atmosphere as much as possible.
- the tubular body is formed to face one end of the plunger and opened and closed by a suction valve; and a discharge port formed to face the other end of the plunger and communicates with the discharge passage;
- a discharge port formed on the inner wall surface of the pump chamber and opened and closed by a discharge valve can be employed.
- the fuel reservoir, the suction port (suction valve), the plunger, and the discharge port are configured to be arranged substantially linearly, so that the components are integrated and the device is downsized. be able to.
- the filter may be arranged in the fuel reservoir, and the fuel reservoir may have a configuration having an opening communicating with the discharge passage upstream of the filter.
- the vapor flowing through the discharge passage is dispersed (miniaturized) by the dispersing means, so that the surface area in contact with the fuel is increased, and the cooling effect of the fuel is enhanced. Efficiency of vapor emission toward the target is also improved.
- the dispersing means may employ a configuration including a mesh filter.
- the vapor that has flowed through the discharge passage is dispersed (miniaturized) by the mesh filter, and when not operating, foreign matter such as dust mixed in the fuel tank is opened. From flowing into the discharge passage.
- the plunger pump is provided with a fuel pressure regulator for adjusting the pressure of the discharged fuel.
- FIG. 1 is a system diagram in which a fuel supply device according to the present invention is applied to an engine fuel supply system.
- FIG. 2 is a cross-sectional view showing one embodiment of the fuel supply device.
- FIG. 3 is a sectional view showing a part of the fuel supply device.
- Figure 4 shows
- FIG. 5 is a system diagram showing a conventional fuel supply device.
- FIG. 1 is a system diagram when the device is applied to an engine
- FIG. 2 shows a structure of the device
- FIG. 3 is a cross-sectional view showing a part of the device
- FIG. 4 is a schematic diagram for explaining the operation of the device.
- this system includes a fuel tank 10, an injector 20 for injecting fuel into an engine E disposed below the fuel tank 10, and a fuel tank 10 and an injector 20. It is provided with feed pipes 30 and 30 for connecting between them, a fuel supply device 100 arranged in the middle of the feed pipes 30 and 30 ′, a control circuit 200 for controlling the system, and the like.
- the fuel supply device 100 includes a plunger pump 110 for sucking and discharging the fuel, a fuel reservoir 150 for temporarily storing the fuel, It is composed of a discharge pipe 170 for discharging the vapor toward the fuel reservoir 150, an inlet control type fuel pressure regulator 180 for controlling the fuel pressure, and the like.
- apparatus 1 0 plunger pump 1 1 0, the fuel reservoir 1 5 0, the discharge pipe 1 7 0, module as integrally including fuel pressure Regiyureta 1 8 0
- the overall size and structure can be simplified, and inline installation can be easily performed.
- the plunger pump 110 is an electromagnetically driven positive displacement pump. As shown in FIGS. 1 and 2, the plunger pump slides in the cylinders 111 and 111 forming a part of the cylinder. 1 1 2, 1 1 3, 1 1 4, yoke 1 1 3, 1 1 Exciting coil 1 16 wound around pobin 1 15 arranged around 14 1, Case 1 1 1 and Case 1 1 made of resin material etc. to cover the outer periphery of coil 1 16 It is provided with a bracket 1 18 and a latching plate 1 19 attached around 7 to form a magnetic path, a wave washer 120 arranged between the pobin 1 15 and the bracket 1 18 and the like.
- an end wall 113a is formed at an end of the yoke 113 defining an end of the cylindrical body, and a fitting hole 111 is formed in the end wall 113a.
- a ′ is formed, and a connector pipe 122 that defines a discharge port 121a is connected to the fitting hole 113a.
- a return spring 1 2 2 is disposed between the end wall 1 1 3 a and the plunger 1 1 2.
- a passage member 123 defining an intake port 123a and forming a part of a cylindrical body is fitted to an end of the yoke 114.
- the passage member 123 holds a suction valve 124 that opens and closes the suction port 123a, and has a holding member 125 that allows the flow of fuel.
- the holding member 125 holds the suction valve 124 in a state of being urged in the closing direction by the spring 124a.
- a return spring 122 is arranged between the holding member 125 and the plunger 112.
- a pump chamber P for sucking and discharging fuel is defined between the suction valve 124 and the plunger 112.
- the cylindrical body (cylinder 1 1 1, yoke 1 1 3, passage member 1 2 3) has a suction port 1 2 opened and closed by a suction valve 1 2 4 at a position facing one end of the plunger 1 1 2. 3a, at the position facing the other end of the plunger 1 1 2
- a discharge port 121 a communicating with a discharge passage 170 a described later, and a discharge port 126 a opened and closed by a discharge valve 127 on the inner wall surface of the pump chamber P are formed, respectively.
- the inner wall surface of the passage member 1 2 3 has a discharge passage 1 2 extending in a direction perpendicular to the reciprocating direction of the plunger 1 1 2 and defining a discharge port 1 2 6 a. 6 are formed.
- a holding member 1 28 holding the discharge valve 127 opening and closing the discharge port 126 a and allowing the flow of the fuel is disposed, and the holding member 128 is The discharge valve 127 is held in a state of being biased in the closing direction by a spring 127a.
- the fuel reservoir 150 has an opening that is fitted to the passage member 123 and communicates with the suction port 123 a at an upstream position adjacent to the suction valve 124.
- Case 1 5 1 having part 1 5 1 a, mesh filter 1 5 2 arranged in case 15 1 and covering opening 15 1 a and having vapor discharge valve 15 2 a, case 1 2 5
- Connector pipe 1 5 1 b provided at the upper end of 1 to connect feed pipe 30
- connector pipe 1 5 1 c provided at the upper side wall of case 15 1 to define opening 15 1 c
- filter 1 There is provided a mesh-like filter 155 as dispersing means arranged so as to cover the opening 155 c ′ above 52.
- a discharge pipe 170 is connected to the connector pipe 120 and the connector pipe 151c.
- the discharge pipe 170 defines a discharge passage 170a through which the fuel leaked from the outer periphery of the plunger 112 or the generated vapor is discharged toward the fuel reservoir 150 (case 151).
- the fuel leaked from the outer periphery of the plunger 112 and the generated vanes pass through the discharge passage 170a from the discharge outlet 121a, and pass through the discharge port 152a to the upper surface of the finholeer 152. It flows into the case 15 1 from the opening 15 1 c ′ located on the flow side. Then, the fuel is filtered again by the filter 152 and sucked into the pump chamber P. On the other hand, the generated vapor is discharged to the fuel tank 10 through the feed pipe 30 by its own buoyancy while cooling the fuel by its vaporization.
- a mesh-like filter 1555 for dispersing the vapor is arranged in the opening 15 1 c, as shown in FIGS. 4 (a) and 4 (b),
- the vapor flowing through the passage 170a is dispersed (miniaturized) by the filter 155. Therefore, the surface area in contact with the fuel is increased, the cooling effect of the fuel is enhanced, and the efficiency of discharging the vapor toward the fuel tank 10 is also enhanced. Further, when not in operation, foreign matter such as dust mixed in the fuel tank 10 can be prevented from flowing into the discharge passage 170a from the opening 151c '.
- the filter 15 2 is disposed in the fuel reservoir 150 (case 15 1), a separate filter unit 3 is used as compared with the case where a single filter unit 3 is used as in the conventional case.
- a case and piping for connecting the case to the plunger pump 110 are not required, and the apparatus can be simplified accordingly.
- the regulator 180 urges the regulating valves 18 2 and 18 2 to open and close the passage 18 1 in the closing direction, downstream of the discharge valve 127.
- Spring 1 8 2 a, diaphragm 1 8 4 and spring 18 operated by the differential pressure between the pressure in the passage 18 defined by the connector pipe 18 connecting the feed pipe 30 ′ and the outside air pressure 4a etc. That is, when the pressure in the passage 18 3 a drops below a predetermined level, the diaphragm 18 4 comes into contact with the needle 18 2 ′ of the regulating valve 18 2 to resist the urging force of the spring 18 2 a.
- the fuel on the upstream side flows through the passage 181, flows out into the passage 18a, and is supplied to the injection nozzle 20.
- the fuel pressure regulator 180 is integrated with the plunger pump 110.
- the fuel pressure can be controlled, and the device 100 can be used. It can be downsized and simplified, and can be easily installed inline.
- the control circuit 200 performs various arithmetic processes and generates a control signal.
- the control circuit 201 drives the plunger pump 110.
- the drive circuit 202 drives the engine E.
- Sensor 203 for detecting the state for example, engine speed, water temperature, intake air temperature, intake pressure, etc.
- detection circuit 204 for detecting the output signal of sensor 203, various control maps, etc. are stored. It is formed by the stored storage unit 205 and the like.
- the plunger 1 1 2 stops and the suction valve 1 2 4 closes, and at the same time, the plunger 1 1 2 Moves in the opposite direction (leftward in Fig. 2) to compress the fuel in the pump chamber P. Then, when the fuel is compressed beyond a predetermined pressure, the discharge valve 127 is opened against the urging force of the spring 127a, and the compressed fuel is discharged from the discharge port 126a. Is done. Thereafter, when the urging forces of the return springs 1 2 2 are balanced, the plunger 1 1 2 stops.
- the fuel flowing into the fuel pressure regulator 180 from the discharge port 126a is supplied to the injector 20 while adjusting the pressure, and is injected at a predetermined timing toward the engine E.
- the fuel leaked from the outer periphery of the plunger 112 and the generated vapor pass through the discharge passage 170a from the discharge outlet 121a. It is led into the fuel reservoir 150 (case 15 1). At this time, the vapor is dispersed (miniaturized) by the filter 15 5 and is discharged to the fuel tank 10 through the feed pipe 30 while efficiently cooling the fuel. On the other hand, the fuel is cooled by being mixed with the fuel in the fuel reservoir 150, filtered again by the filter 152, and sucked into the pump chamber P from the suction port 123a.
- the vapor generated in the filter 152 opens the vapor discharge valve 152 a by the buoyancy, flows out of the filter 152, passes through the feed pipe 30, and flows into the fuel tank 10. Is discharged.
- the filter 152 for filtering the fuel is disposed in the fuel reservoir 150 .
- the present invention is not limited to this, and a separate filter unit is provided as in the related art.
- a discharge passage 170a for connecting the discharge port 151c 'to the fuel reservoir 150 is provided.
- the generated vapor can be efficiently discharged, and the fuel can be cooled by the vapor.
- the present invention is not limited to this, and the fuel pressure regulator 180 is provided separately. Even if formed, the generated vapor can be efficiently discharged as described above, and the fuel can be cooled by the vapor.
- the mesh filter 155 is adopted as the dispersing means for dispersing the vapor.
- the present invention is not limited to this.
- another configuration can be adopted as long as the vapor mass can be dispersed (finely divided).
- the plunger pump is provided integrally with the fuel reservoir for temporarily storing fuel on the upstream side of the suction valve, and includes the cylinder and the fuel reservoir.
- the fuel leaked from the outer periphery of the plunger or the generated vapor is discharged toward the fuel reservoir, so that the fuel leaked from the outer periphery of the plunger or the generated vapor is discharged. It is discharged to the fuel reservoir through the passage.
- the vapor can be prevented from being discharged together with the fuel, and the fuel in the fuel reservoir can be cooled by the vapor, so that the pump discharge performance particularly at high temperatures can be improved.
- the fuel reservoir is provided integrally with the plunger pump, the fuel cooled by the vapor can be quickly guided to the pump chamber while suppressing the influence of the external atmosphere as much as possible.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04726813A EP1614890A1 (en) | 2003-04-16 | 2004-04-09 | Fuel feed device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-111256 | 2003-04-16 | ||
JP2003111256A JP2004316536A (ja) | 2003-04-16 | 2003-04-16 | 燃料供給装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004092572A1 true WO2004092572A1 (ja) | 2004-10-28 |
Family
ID=33295991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/005164 WO2004092572A1 (ja) | 2003-04-16 | 2004-04-09 | 燃料供給装置 |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1614890A1 (ja) |
JP (1) | JP2004316536A (ja) |
CN (1) | CN1774572A (ja) |
TW (1) | TW200508488A (ja) |
WO (1) | WO2004092572A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007092321A2 (en) * | 2006-02-07 | 2007-08-16 | Donaldson Company, Inc. | Filter arrangement and methods |
WO2013035132A1 (ja) * | 2011-09-06 | 2013-03-14 | トヨタ自動車株式会社 | 燃料ポンプおよび内燃機関の燃料供給システム |
JP5855439B2 (ja) * | 2011-12-05 | 2016-02-09 | 株式会社ケーヒン | 燃料供給ユニット |
CN102434543A (zh) * | 2011-12-29 | 2012-05-02 | 济南大学 | 微型电磁脉冲式液压驱动系统 |
CN104022613A (zh) * | 2014-06-18 | 2014-09-03 | 青岛大学 | 一种直线式电液泵 |
DE102014224938A1 (de) * | 2014-12-04 | 2016-06-09 | Robert Bosch Gmbh | Kraftstoffpumpe mit verbessertem Förderverhalten |
DE102014119566A1 (de) * | 2014-12-23 | 2016-06-23 | Werner Rogg | Pumpsystem für gasförmige und flüssige Medien |
CN104682608B (zh) * | 2015-03-03 | 2017-05-17 | 青蛙泵业有限公司 | 深井泵用多重密封电机 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5917285U (ja) * | 1982-07-23 | 1984-02-02 | 自動車機器株式会社 | 電磁ポンプ |
JPS6191067U (ja) * | 1984-11-19 | 1986-06-13 | ||
JP2002155828A (ja) * | 2000-11-17 | 2002-05-31 | Mikuni Corp | 電子制御燃料噴射装置 |
JP2003106232A (ja) * | 2001-10-02 | 2003-04-09 | Mikuni Corp | 燃料供給装置 |
-
2003
- 2003-04-16 JP JP2003111256A patent/JP2004316536A/ja active Pending
-
2004
- 2004-03-31 TW TW093108902A patent/TW200508488A/zh unknown
- 2004-04-09 CN CNA2004800101045A patent/CN1774572A/zh active Pending
- 2004-04-09 WO PCT/JP2004/005164 patent/WO2004092572A1/ja active Application Filing
- 2004-04-09 EP EP04726813A patent/EP1614890A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5917285U (ja) * | 1982-07-23 | 1984-02-02 | 自動車機器株式会社 | 電磁ポンプ |
JPS6191067U (ja) * | 1984-11-19 | 1986-06-13 | ||
JP2002155828A (ja) * | 2000-11-17 | 2002-05-31 | Mikuni Corp | 電子制御燃料噴射装置 |
JP2003106232A (ja) * | 2001-10-02 | 2003-04-09 | Mikuni Corp | 燃料供給装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1614890A1 (en) | 2006-01-11 |
TW200508488A (en) | 2005-03-01 |
JP2004316536A (ja) | 2004-11-11 |
CN1774572A (zh) | 2006-05-17 |
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