WO2006080272A1 - 燃料供給装置 - Google Patents
燃料供給装置 Download PDFInfo
- Publication number
- WO2006080272A1 WO2006080272A1 PCT/JP2006/300955 JP2006300955W WO2006080272A1 WO 2006080272 A1 WO2006080272 A1 WO 2006080272A1 JP 2006300955 W JP2006300955 W JP 2006300955W WO 2006080272 A1 WO2006080272 A1 WO 2006080272A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- control module
- fuel tank
- supply device
- heat
- Prior art date
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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
- F02M37/0076—Details of the fuel feeding system related to the fuel tank
- F02M37/0082—Devices inside the fuel tank other than fuel pumps or filters
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- 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
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- 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
- F02M37/106—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank
Definitions
- the present invention relates to a fuel supply device that supplies fuel to an internal combustion engine (for example, an automobile engine). Specifically, the present invention relates to a cooling structure of a control module that controls the fuel supply device.
- This fuel supply device includes a set plate that closes the mounting hole of the fuel tank.
- a bracket is formed on the lower surface of the set plate (the inner surface of the fuel tank).
- a fuel pump is attached to the bracket.
- a circuit case is formed on the upper surface of the set plate (the outer surface of the fuel tank).
- a control module is accommodated in the circuit case.
- the set plate includes a metal heat sink and a supply pipe that passes through the heat sink.
- the bottom surface of the control module housed in the circuit case is in contact with the top surface of the heat sink.
- a discharge port of a fuel pump is connected to the supply pipe.
- the control module is cooled by the fuel flowing through the supply pipe (that is, the fuel supplied from the fuel pump to the internal combustion engine). For this reason, if the amount of heat generated by the control module increases at high temperatures such as in summer, the fuel supplied from the fuel pump to the internal combustion engine may be excessively warmed, and bubbles may be generated in the fuel. is there. If bubbles are generated in the fuel supplied to the internal combustion engine, the required amount of fuel is not supplied to the internal combustion engine, which affects the combustion control of the internal combustion engine.
- An object of the present invention is to provide a fuel supply device that can suppress excessive heating of fuel supplied from a fuel pump to an internal combustion engine even when the control module is cooled. .
- the fuel supply device of the present application is attached to a fuel tank and discharges fuel stored in the fuel tank to the outside of the fuel tank.
- This fuel supply device has a set plate that is attached to a mounting hole of the fuel tank and closes the mounting hole.
- An electric fuel pump can be attached to the inner surface of the set plate (the surface that is the inner side of the fuel tank when it is attached to the fuel tank).
- a control module that drives the fuel pump with electric power supplied from the outside is attached to the outer surface of the set plate (the surface that is outside the fuel tank when it is attached to the fuel tank).
- One end of the heat dissipating member that dissipates heat generated by the control module is thermally connected to the control module, and the other end protrudes downward from the inner surface of the set plate. For this reason, when the fuel supply device is attached to the fuel tank (that is, when the set plate is attached to the attachment hole of the fuel tank), one end of the heat radiating member protrudes into the fuel tank and is immersed in the fuel in the fuel tank. Therefore, the heat of the control module is transmitted to the entire fuel in the fuel tank through the heat radiating member. For this reason, it is possible to prevent the fuel supplied to the internal combustion engine such as the fuel pump from being excessively warmed.
- the control module may include a heat generating electronic element.
- the heat radiating plate can be used as a heat radiating member, and the heat radiating plate can be bent at an intermediate portion thereof.
- the bending part force of the heat radiating plate is protruded downward from the inner surface of the set plate, and the other side of the bending part force is arranged on the outer surface of the set plate. It is preferable to dispose the heat-generating electronic element of the control module on the heat sink disposed on the outer surface of the set plate.
- one end of the heat sink is immersed in the fuel in the fuel tank, while the other end of the heat sink is thermally connected to the heat generating electronic element of the control module. Can be connected. As a result, the heat generated in the control module is transferred to the fuel tank. Can be efficiently transmitted to the fuel inside.
- the cooling rod can be a heat radiating member, and the cooling rod can be provided with a plate-shaped head. The portion below the head of the cooling rod can be projected downward from the inner surface of the set plate, and the heat generating electronic element of the control module can be arranged on the head of the cooling rod.
- the heat of the control module can be efficiently transferred to the fuel in the fuel tank via the cooling rod.
- a cooling rod as a heat dissipation member
- cooling rods it is preferable to use a plurality of cooling rods. When a plurality of cooling rods are used, it is preferable that the cooling rods are brought into uniform contact with the entire control module.
- Each of the fuel supply devices described above may further include a fuel filter that removes foreign matter from the fuel force discharged from the fuel pump.
- the fuel filter can be attached to the inner surface of the set plate.
- the portion to be arranged is arranged.
- the fuel filter is disposed along the outer periphery of the fuel pump, and the heat dissipating member is disposed in a portion of the outer periphery of the fuel pump where the fuel filter is not disposed.
- the heat dissipating member is arranged in a circle centered on the axis of the fuel pump and having a radius from the center force to the outer periphery of the fuel filter. According to such a configuration, the fuel supply device does not increase in the radial direction, and space saving can be achieved.
- the set plate and the heat radiating plate can be integrally formed by insert molding.
- a through-hole penetrating in the thickness direction is formed in the heat sink at a portion embedded in the set plate. According to such a configuration, since the insert material (synthetic resin or the like) is filled in the through hole formed in the heat radiating plate, the set plate and the heat radiating plate can be firmly bonded.
- insert molding can be performed in a state where the heat sink is not bent, and the heat sink can be bent after insert molding. It is possible to perform insert molding with the heat sink folded and holding both ends of the heat sink. it can.
- Each of the fuel supply devices described above further includes a pressure regulator for adjusting the pressure of the fuel from which the fuel pump force is also discharged, and fuel returned to the fuel tank by the pressure regulator. It is possible to provide a discharge part for discharging the gas.
- the pressure regulator and the discharge part are provided on the inner surface of the set plate. In this case, it is preferable that the position of the discharge portion and the discharge direction thereof are adjusted so that the fuel from which the discharge portion force is discharged flows toward the heat radiating member.
- the heat sink (that is, the control module) can be cooled using the return fuel of the pressure regulator. For this reason, the control module can be effectively cooled even when the fuel in the fuel tank is low.
- Each of the fuel supply devices described above can further include a fuel circulation means for circulating the fuel in the fuel tank in the fuel tank, and a storage container for storing the fuel circulated by the fuel circulation means. .
- a heat dissipation member is disposed in the storage container.
- control module since the heat radiating member (control module) is cooled by the fuel stored in the storage container, the control module can be effectively cooled even when the fuel in the fuel tank is low. .
- Each of the fuel supply devices described above can further include a fuel circulation passage through which fuel circulating in the fuel tank flows.
- the heat radiating member and the fuel circulation passage may be thermally connected.
- the heat radiating member is cooled by the fuel flowing through the fuel circulation passage.
- the control module can be cooled.
- the second fuel supply device of the present application includes an electric fuel pump, a control module that drives the fuel pump by electric power supplied from the outside, and a fuel circulation unit that circulates fuel in the fuel tank.
- the fuel circulation means has a fuel ejection port for ejecting the circulating fuel into the fuel tank.
- the control module is cooled by the fuel ejected from the fuel ejection port. Since the control module is cooled using the circulating fuel circulated by the fuel circulation means, the fuel pump power is also excessively supplied to the internal combustion engine. It can suppress that it is warmed by.
- the second fuel supply device may further include a case for accommodating the control module. At least a part of the case is exposed in the fuel tank. It is preferable that the fuel jetted from the fuel jet is sprayed on the exposed part.
- the fuel jetted fuel is jetted onto the case, and the control module in the case is cooled by the jetted fuel.
- the heat generated by the control module is large and the case becomes hot, the fuel sprayed on the case vaporizes.
- the case (control module) can be effectively cooled by the latent heat of vaporization of the fuel.
- the second fuel supply device may further include a heat radiating plate thermally connected to the control module. And at least one part of a heat sink is exposed in a fuel tank. The fuel ejected from the fuel ejection port may be sprayed on the exposed part.
- the contact area between the sprayed fuel and the heat sink can be increased, and the control module can be effectively cooled.
- the fuel circulation means circulates the fuel in the fuel tank in the fuel tank.
- the circulating fuel is prevented from being warmed by the outside air temperature, and the control module can be cooled effectively.
- the fuel circulation means can have a relief means for returning the surplus fuel of the fuel pumped by the fuel pump into the fuel tank, for example.
- the fuel circulation means may include means for sucking the fuel in the fuel tank I by the negative pressure generated by using a part of the fuel pumped by the fuel pump.
- the third fuel supply device of the present application is attached to a mounting hole of the fuel tank, a set plate for closing the mounting hole, an electric fuel pump attached to the set plate, and supplied from the outside
- a control module that drives the fuel pump with electric power and a case that houses the control module are provided.
- the case is provided substantially perpendicular to the set plate. Part of the case protrudes into the fuel tank and part of the control module burns It is placed inside the material tank.
- the heat generating electronic parts of the control module are arranged inside the fuel tank, and the other parts are arranged outside the fuel tank.
- a case that is, a control module
- a part of the control module is disposed inside the fuel tank.
- a part of the case can be immersed in the fuel in the fuel tank, and the heat of the control module can be transferred to the fuel in the fuel tank through the case. Therefore, the heat of the control module is transmitted to the entire fuel in the fuel tank, and the fuel supplied to the internal combustion engine from the fuel pump can be prevented from being excessively warmed.
- the heat generating electronic components of the control module are arranged inside the fuel tank, the heat generated by the control module can be effectively transferred to the fuel in the fuel tank.
- the fourth fuel supply device of the present application includes an electric fuel pump, a control module that drives the fuel pump by electric power supplied from the outside, and circulates fuel in the fuel tank in the fuel tank. And a storage container for storing the fuel circulated by the fuel circulation means. Then, the control module is cooled by the fuel stored in the storage container.
- the fuel circulated by the fuel circulation means is stored in a storage container, and the control module is cooled by the stored fuel.
- the control module is cooled by the stored fuel.
- FIG. 1 is a front view of a fuel supply device of the present embodiment.
- FIG. 2 is a right side view of the fuel supply device shown in FIG.
- FIG. 3 is a cross-sectional view taken along line III-III in FIG.
- FIG. 4 is a plan view of the set plate 10 (before mounting the control module).
- FIG. 5 is a front view of the set plate shown in FIG.
- FIG. 6 is a right side view of the set plate shown in FIG.
- FIG. 8 is a diagram for explaining the procedure for mounting the control module and the heat sink on the circuit case.
- FIG. 9 is a diagram for explaining the procedure for mounting the control module and the heat sink on the circuit case.
- FIG. 10 is a diagram for explaining the procedure for mounting the control module and the heat sink on the circuit case.
- FIG. 11 is a diagram for explaining the procedure for mounting the control module and the heat sink on the circuit case.
- FIG. 12 is a diagram for explaining the procedure for mounting the control module and the heat sink on the circuit case.
- FIG. 13 is a diagram for explaining the procedure for mounting the control module and the heat sink on the circuit case.
- FIG. 14 is a view for explaining another embodiment of the present invention, showing a state before the control module is mounted on the set plate.
- FIG. 15 is a plan view showing a state of a cooling rod formed integrally with a set plate.
- FIG. 16 is a diagram for explaining a procedure for mounting the control module on the set plate shown in FIG.
- FIG. 17 is a view for explaining a procedure for mounting the control module on the set plate shown in FIG.
- FIG. 18 is a diagram for explaining a procedure for mounting the control module on the set plate shown in FIG.
- FIG. 19 is a diagram for explaining a procedure for mounting the control module on the set plate shown in FIG. 14.
- FIG. 20 is a view for explaining the procedure for mounting the control module on the set plate shown in FIG. ⁇ 21] It is a diagram showing an overall configuration of a fuel supply device of a second embodiment.
- FIG. 22 is a layout diagram schematically showing the layout of components of the control circuit unit shown in FIG. 21.
- FIG. 23 is a layout diagram of components when the control circuit unit shown in FIG. 22 is viewed from the side.
- FIG. 24 is a view showing another modification of the fuel supply device shown in FIG.
- FIG. 25 is a layout diagram schematically showing the layout of each part of the control circuit unit of the modified example of FIG.
- FIG. 26 is a layout diagram of components when the control circuit unit shown in FIG. 25 is viewed from the side.
- FIG. 27 is an arrangement diagram schematically showing the arrangement of components of the control circuit unit of the modified example of FIG.
- FIG. 28 is a layout diagram of components when the control circuit unit shown in FIG. 27 is viewed from the side.
- FIG. 29 is a layout diagram schematically showing the layout of components of the control circuit unit of the modification of FIG.
- FIG. 30 is a layout diagram of components when the control circuit unit shown in FIG. 29 is viewed from the side.
- FIG. 31 is an enlarged view showing a groove formed on the surface of the heat sink shown in FIGS. 29 and 30.
- FIG. 32 is an arrangement diagram schematically showing the arrangement of components of the control circuit unit of the modification of FIG.
- FIG. 33 is a layout diagram of components when the control circuit unit shown in FIG. 32 is viewed from the side.
- FIG. 34 is an arrangement diagram schematically showing the arrangement of components of the control circuit unit of the modified example of FIG.
- FIG. 35 is a layout diagram of components when the control circuit unit shown in FIG. 34 is viewed from the side.
- FIG. 36 is a layout diagram schematically showing the layout of components of the control circuit unit of the modification of FIG.
- FIG. 37 is a layout view of components when the control circuit unit shown in FIG. 36 is viewed from the side.
- FIG. 38 is an arrangement diagram schematically showing the arrangement of components of the control circuit unit of the modified example of FIG.
- FIG. 39 is a layout diagram of components when the control circuit unit shown in FIG. 38 is viewed from the side.
- FIG. 40 is an arrangement diagram schematically showing the arrangement of components of the control circuit unit of the modification of FIG.
- FIG. 41 is a layout diagram of components when the control circuit unit shown in FIG. 40 is viewed from the side.
- FIG. 42 is a layout diagram schematically showing the layout of components of the control circuit unit of the modification of FIG.
- FIG. 43 is a layout diagram of components when the control circuit unit shown in FIG. 42 is viewed from the side.
- FIG. 44 is an arrangement diagram schematically showing the arrangement of components of the control circuit unit in the modification of FIG. 25.
- FIG. 45 is a layout diagram of components when the control circuit unit shown in FIG. 44 is viewed from the side.
- FIG. 46 is an arrangement diagram schematically showing the arrangement of components of the control circuit unit in the modified example of FIG.
- FIG. 47 is a layout diagram of components when the control circuit unit shown in FIG. 46 is viewed from the side.
- FIG. 48 is an arrangement diagram schematically showing the arrangement of components of the control circuit unit of the modification of FIG. 25.
- FIG. 49 is a layout diagram of components when the control circuit section shown in FIG. 48 is viewed from the side.
- the fuel supply device 1 has a set plate 10 formed of an insulating resin material.
- the set plate 10 is attached to an attachment hole 34a formed on the upper surface of the fuel tank 34.
- the mounting hole 34a is blocked by the set plate 10.
- a circuit case 14 and a discharge pipe mounting portion 12 are formed on the upper surface of the set plate 10 (the outer surface of the fuel tank 34).
- the circuit case 14 accommodates a control module (described in detail later) inside.
- a connector 13 is molded into a body.
- a control module housed in the circuit case 14 is connected to the connector 13.
- the terminal of the connector 13 is connected to a power source such as a battery and a control unit for engine control (none of which are shown).
- a discharge pipe 11 is attached to the discharge pipe mounting portion 12.
- An injector (not shown) is connected to the other end of the discharge pipe 11. The fuel discharged from the fuel supply device 1 to the discharge pipe 11 is supplied to the engine via the injector.
- the bracket portion 16 From the lower surface of the set plate 10 (the inner surface of the fuel tank 34), the bracket portion 16, the heat radiating plate 32, and the like extend downward in the fuel tank 34.
- the bracket portion 16 is formed integrally with the set plate 10.
- a mounting piece 18 is formed at the lower end of the bracket portion 16.
- the attachment piece 18 engages with the engagement hole 20 of the filter case 22.
- the filter case 22 is coupled to the set plate 10 by the attachment piece 18 engaging with the engagement hole 20.
- a fuel pump case 30 is coupled to the filter case 22.
- a fuel pump 31 (shown in FIG. 3) is accommodated in the fuel pump case 30.
- a suction filter 26 is attached to a fuel suction port (not shown) at the lower end of the fuel pump by a mounting piece 28 (see FIGS. 1 and 2).
- the suction filter 26 removes relatively large foreign matter sucked into the fuel pump.
- the fuel discharge port at the upper end of the fuel pump has a pressure relief.
- One end of the connecting pipe 38 is attached via the data 36!
- the pressure regulator 36 has a function of adjusting the fuel pressure of the fuel discharged from the fuel pump and returning excess fuel out of the fuel discharged from the fuel pump into the fuel tank 34.
- a control module in the circuit case 14 is connected to the electric motor built in the fuel pump via a lead wire.
- the filter case 22 has an arc shape when the set plate 10 side force is also seen.
- a fuel pump case 30 is fitted inside the filter case 22.
- a fuel filter (not shown) is accommodated in the filter case 22.
- the fuel filter removes fine foreign matters from the fuel discharged from the fuel pump.
- a fuel inlet 40 and a fuel outlet 42 are formed on the upper surface of the filter case 22.
- the fuel inflow port 40 is connected to the fuel discharge port of the fuel pump through the connection pipe 38.
- the fuel discharge port 42 is connected to the discharge pipe mounting portion 12 of the set plate 10 by a pipe (not shown).
- the heat radiating plate 32 that also hangs down the lower surface force of the set plate 10 is formed of a metal material (for example, aluminum or copper) having high thermal conductivity.
- the lower end of the heat radiating plate 32 extends to the vicinity of the lower end of the fuel supply device 1.
- the upper end of the heat sink 32 passes through the set plate 10 and is positioned on the upper surface of the set plate 10. As will be described later, the control module is in contact with the upper end of the heat sink 32.
- the fuel supply device 1 includes two heat radiating plates 32 and 32.
- the heat radiating plates 32 and 32 are arranged on the outer peripheral side of the fuel pump case 30 where the filter case 22 is not arranged. More specifically, the fuel pump case 30 is arranged on the outer peripheral side in the direction of fuel ejection (in the direction of the arrow in the figure) returning from the pressure regulator 36 into the fuel tank 34. Therefore, when the fuel pump is driven and surplus fuel is returned from the pressure regulator 36 into the fuel tank 34, the fuel is ejected (scattered) in the direction of the heat radiating plates 32, 32, and the heat radiating plate Contact 32, 32.
- the heat sinks 32 and 32 are filters from the center of the fuel supply device 1 centered on the surface perpendicular to the axis of the fuel supply device 1 (that is, the surface parallel to the set plate 10). It is placed in a circle whose radius is the distance to the outer periphery of the case (that is, the fuel filter) (circle indicated by a dashed line in the figure). As a result, the fuel can be The supply device 1 is prevented from being enlarged in the radial direction, and the fuel supply device 1 is compact.
- the fuel supply device 1 further includes a liquid level gauge.
- the level gauge has a float 36, an arm 24, and a sensor unit (not shown).
- the sensor unit is detachably attached to the set plate 10.
- the float 36 moves up and down as the amount of fuel in the fuel tank 34 changes.
- the arm 24 swings and the angle of the arm 24 changes.
- the sensor unit detects a change in the rotation angle of the arm, and by this, the amount of fuel in the fuel tank 34 is measured.
- the circuit case 14 formed on the upper surface of the set plate 10 and the control module installed in the circuit case 14 will be described.
- the circuit case 14 is formed in a rectangular parallelepiped shape by four wall portions 15 a erected on the upper surface of the set plate 10.
- a connector 13 is formed in one body in one of the four wall portions 15a.
- the upper surface of the circuit case 14 is open. Inside the circuit case 14, the upper ends of the two heat sinks 32, 32 are arranged. That is, the heat sinks 32 and 32 penetrate the set plate 10, the upper end is located above the set plate 10, and the lower end is located below the set plate 10 (in the fuel tank 34) (FIGS. 5 and 6). reference).
- the upper end portions of the heat radiating plates 32, 32 are bent toward the other heat radiating plate.
- One surface (lower surface) of the upper end portion of the heat sink 32 is in contact with the upper surface of the set plate 10.
- Holding pieces 15b and 15b are formed in the vicinity of the bent portions of the heat radiating plates 32 and 32, respectively.
- the holding pieces 15b and 15b hold a heat sink described later.
- a capacitor holding portion 15c and a coil holding portion 15d are formed on the side of one holding piece 15b.
- a control module is mounted on the circuit case 14 described above.
- the control module includes a heat sink 44, electronic elements 46 and 48 fixed on the heat sink 44, a capacitor 50, a choke coil 52, and a bus bar 56.
- the heat sink 44 is formed of a metal material (for example, aluminum or copper) having a high thermal conductivity. The bottom surface of the heat sink 44 is in contact with the heat sinks 32 and 32. Heat sink 44 The holding pieces 15b, 15b hold the heat sinks 32, 32.
- the electronic elements 46 and 48 fixed on the heat sink 44 include a diode and a current transistor (such as a MOS transistor). These electronic elements 46 and 48 constitute a pump drive circuit.
- the pump drive circuit converts DC power supplied from an external power source into pump drive power and supplies it to the fuel pump.
- the capacitor 50 is fixed to the capacitor holding portion 15c, and the choke coil 52 is fixed to the coil holding portion 15d. Capacitor 50 and choke coil 52 reduce electrical noise generated by electronic elements 46 and 48.
- the bus bar 56 is connected to the above-described elements (electronic elements 46, 48, capacitor 50, choke coil 52). One end of the bus bar 56 is connected to the terminal 13b of the connector 13. A lead wire 13a is connected to the terminal 13b. The other end of the lead wire 13a is connected to a fuel pump or the like.
- a potting material 58 is filled between the circuit case 14 and the control module.
- the potting material 58 prevents moisture and dust from entering the control module.
- heat-dissipating silicon resin-based or epoxy-based resin can be used.
- alumina fiber (filler) can be mixed into these cocoons. By adding an alumina filler, the thermal conductivity of the potting material 58 can be increased.
- a through hole 32 a is formed in the heat radiating plate 32. Then, the heat radiating plate 32 is bent at a substantially right angle at the upper end of the through hole 32a.
- the heat sink 32 is provided with the through hole 32a, but the heat sink may not be provided with a through hole.
- the heat radiating plate 32 and the connector 13 are placed in the mold, and the set plate 10 is molded with a resin material.
- the molded set plate 10 is shown in FIG.
- the wall portion 15a, the holding piece 15b, the capacitor holding portion 15c, and the coil holding portion 15b of the circuit case 14 are also integrally formed with the set plate 10.
- the heat sink 32 is insert-molded into the set plate 10
- the resin material is filled in the through holes 32 a of the heat sink 32.
- the heat sink 32 can be firmly fixed to the set plate 10.
- the heat sink 32 is bent and the set plate 10 is formed with a force.
- the heat sink 32 and the set plate 10 may be formed integrally to bend the heat sink 32 with a force.
- the set plate 10 can be molded while the upper and lower ends of the heat sink 32 are held, so that the heat sink 32 can be prevented from falling due to the grease pressure during molding.
- the bent heat sink 32 also raises the upper surface force of the set plate 10 due to the spring back. For this reason, when the heat sink 44 is disposed on the heat sink 32, a force that urges the heat sink 44 upward acts from the heat sink 32 to the heat sink 44. Therefore, the heat sink 44 is firmly held by the holding piece 15b.
- Fig. 9 shows the disassembled items (44, 46, 48, 50, 5 2, 56) that make up the set plate 10 and ⁇ 1 ”module.
- the electronic elements 46 and 48, the capacitor 50, and the choke coil 52 are fixed to the bus bar 56 (that is, the control unit 60 (state of FIG. 10)).
- the heat sink 44 is fixed to the lower surface of the electronic elements 46 and 48 of the control unit 60 (state shown in FIG. 11).
- the control unit 60 to which the heat sink 44 is fixed is mounted at a predetermined position on the set plate 10, and the bus bar 56 and the terminal 13b of the connector 13 are connected (state of FIG. 12).
- potting resin 58 is filled in the circuit case 14 (state 13).
- each component (44, 46, 48, 50, 52, 56) constituting the control module is separately attached to the set plate 10. You may make it wear.
- the bus bar 56 may be integrally formed when the set plate 10 is formed, and the electronic components 46, 48, etc. may be fixed to the integrally formed bus bar 56.
- the pressure of the fuel discharged from the fuel pump is adjusted by the pressure regulator 36, and flows into the filter case 22 through the connection pipe 38.
- the fuel that has flowed into the filter case 22 is removed by the fuel filter accommodated in the filter case 22 to relatively small foreign matter and discharged from the fuel discharge port 42.
- the fuel discharged from the fuel discharge port 42 flows through the discharger 11 on the upper surface of the set plate 10 and is supplied to the engine!
- the electronic elements 46 and 48 of the control module when the electronic elements 46 and 48 of the control module are activated (that is, the switching elements of the control module are switched), the electronic elements 46 and 48 generate heat. Heat generated in the electronic elements 46 and 48 is transmitted to the upper end portion of the heat radiating plate 32 through the heat sink 44.
- the lower end of the heat radiating plate 32 penetrates the set plate 10 and protrudes into the fuel tank 34, and the lower end extends to the vicinity of the lower end of the fuel supply device 1. Therefore, the lower end of the heat radiating plate 32 is immersed in the fuel stored in the fuel tank 34, and the heat transmitted to the heat radiating plate 32 is released to the fuel in the fuel tank 34. Thereby, the electronic elements 46 and 48 are cooled.
- surplus fuel out of the fuel discharged from the fuel pump is returned to the fuel tank 34 from the pressure regulator 36. Since the fuel returned from the pressure regulator 36 into the fuel tank 34 is ejected toward the heat sink 36, even when the fuel in the fuel tank 34 is low, the heat sink 34 has no pressure on the pressure regulator 34. The returned fuel from the slat 36 scatters and contacts, and the heat sink 34 is cooled. Therefore, the heat sink 32 is efficiently cooled.
- the heat generating electronic elements 46 and 48 of the control module are connected to the upper end of the heat sink 32 via the heat sink 44, and the lower end of the heat sink 32. Is immersed in the fuel in the fuel tank 34. Therefore, regardless of whether the flow rate of fuel discharged from the fuel pump is large or small, the heat sink 32 comes into contact with the fuel stored in the fuel tank 34 and dissipates heat from the electronic elements 46 and 48 to the fuel in the fuel tank 34 To be able to wear. Since the heat of the control module is dissipated to the fuel in the fuel tank 34, it is possible to prevent the fuel supplied from the fuel pump to the engine from being excessively warmed. As a result, bubbles are prevented from being mixed into the fuel supplied to the engine, and the engine can be burned at an appropriate air-fuel ratio.
- the cooling capacity for cooling the electronic elements 46 and 48 can be adjusted by the area of the heat radiating plate 32, a desired cooling capacity can be easily obtained. Furthermore, since the fuel returned from the pressure regulator 36 is jetted out of the fuel pump by being directed toward the heat radiating plate 32, the amount of fuel stored in the fuel tank 34 is reduced. However, the heat sink 32 can be efficiently cooled.
- the fuel supply device 1 prevents the fuel supply device 1 from being enlarged in the radial direction by arranging the heat radiating plate 32 on the outer periphery of the fuel pump case 30 where the filter case 22 is not provided. is doing. Therefore, it is possible to improve the mountability to the fuel tank 34 while efficiently cooling the electronic elements 46 and 48.
- the force using the cooling plate to cool the control module is not limited to such an example.
- FIG. A plurality of cooling rods 64 can be used as shown at ⁇ 20.
- the cooling rod 64 includes a head portion 64b formed in a plate shape and a rod-like portion 64a in which the force of the head portion 64b extends downward.
- the cooling rod 64 is formed integrally with the set plate 62, the lower surface of the head 64b abuts on the upper surface of the set plate 62, and the rod-shaped portion 64a of the cooling rod 64 penetrates the set plate 62, and the set plate 62 It protrudes into the fuel tank from the bottom surface.
- the cooling rods 64 are regularly arranged on the set plate 62 with a predetermined interval. As a result, a large number of cooling rods 64 are efficiently arranged in a small area.
- the procedure for mounting the control module on the set plate 62 can be performed by a method substantially similar to the embodiment described above. That is, first, the electronic elements 46 and 48, the capacitor 50, and the choke coil 52 are connected to the bus bar 56 (state in FIG. 16 ⁇ state in FIG. 17). Next, the upper surface of the heat sink 44 is fixed to the lower surfaces of the electronic elements 46 and 48 (state shown in FIG. 17 ⁇ state shown in FIG. 18). Then, the lower surface of the heat sink 44 is in contact with the upper surface of the head 64b of the cooling rod 64. Next, the control module is mounted on the set plate 62 (state shown in FIG. 18 ⁇ state shown in FIG. 19).
- silicon gel 68 is injected into the gaps between the cooling rods 64 (see FIGS. 18 and 19). By injecting the silicon gel 68 into the gap between the cooling rods 64, the boundary between the cooling rod 64 and the set plate 62 is sealed. It is preferable to use a silicon gel 68 having a high thermal conductivity. As is clear from FIG. 20, in this example, the upper end of the circuit case is sealed with a lid 66.
- the contact area between the cooling rods 64 and the fuel in the fuel tank can be made larger than the volume of the cooling rods 64. For this reason, even if the heat sink is reduced (that is, the area where the cooling rod 64 is arranged is reduced), sufficient cooling capacity can be exhibited. This makes it possible to reduce the size of the control module.
- the rod-like portion 64b of the cooling rod 64 can be arranged on the outer side of the fuel pump case where the filter case is arranged.
- the return fuel of the pressure regulator 36 is force directed to inject the return fuel of the pressure regulator 36 toward the heat radiating plate 32.
- the return fuel of the pressure regulator 36 is set to the set plate 10 You may make it inject toward the lower surface (position where the heat sink 44 is arranged). Even with this configuration, the control module can be cooled by effectively using the return fuel of the pressure regulator 36.
- the fuel supply device of the second embodiment has a set plate 110 attached to the attachment hole of the fuel tank 100.
- the set plate 110 is formed of an insulating resin material.
- a fuel discharge passage 108 is formed in the set plate 110.
- a branch passage 108a is provided in the middle of the fuel discharge passage 108.
- a pressure regulator (relief valve) 112 is attached to the tip of the branch flow path 108a.
- a discharge pipe mounting portion 111 is formed at the tip of the fuel discharge channel 108.
- a discharge pipe (not shown) is attached to the discharge pipe attachment portion 111.
- An injector (not shown) is connected to the end, and fuel is supplied from the injector to the engine.
- a control circuit unit 114 is attached to the set plate 110 substantially perpendicular to the set plate 110.
- the upper part of the control circuit unit 114 projects upward from the set plate 110, and the lower part of the control circuit unit 114 projects into the fuel tank 100.
- the lower part of the control circuit unit 114 faces the fuel outlet of the pressure regulator 112. The fuel ejected from the pressure regulator 112 is sprayed to the control circuit unit 114.
- a casing 105 is attached to the lower surface of the set plate 110.
- a fuel pump 102 and a fuel filter 106 are accommodated in the casing 105. Electric power is supplied to the fuel pump 102 from the control circuit unit 114 via the lead wire 113.
- a suction filter 104 is attached to the fuel inlet 102 a of the fuel pump 102. The suction filter 104 removes foreign matter having a large fuel force sucked into the fuel pump 102.
- a fuel filter 106 is connected to the fuel discharge port 102 b of the fuel pump 102 via the fuel flow path 103. The fuel filter 106 removes small foreign matters contained in the fuel discharged from the fuel pump 102 (that is, foreign matters smaller than the foreign matters removed by the suction filter 104).
- the fuel discharge passage 108 described above is connected to the fuel outlet 106a of the fuel filter 106.
- the fuel pump 102 when electric power is supplied from the control circuit unit 114, the fuel pump 102 operates, and the fuel in the fuel tank 100 passes through the suction filter 104 from the fuel intake port 102a. Sucked into 102. The fuel sucked into the fuel pump 102 is pressurized and discharged from the fuel discharge port 102b. The fuel discharged from the fuel discharge port 102b flows through the fuel discharge flow path 108 after the foreign matter is removed by the fuel filter 106. Part of the fuel flowing through the fuel discharge passage 108 is supplied from the discharge pipe to the injector, and the rest is jetted into the fuel tank 100 from the pressure regulator 112. Therefore, in the present embodiment, the branch passage 108a and the pressure regulator 112 constitute fuel circulation means for circulating the fuel in the fuel tank 100 within the fuel tank 100.
- the control circuit unit 114 includes a circuit case 116 and a control module accommodated in the circuit case 116.
- the circuit case 116 is formed of a resin material and has a box-like appearance with a square cross section.
- a connector 118 is formed on the top of the circuit case 116.
- the connector 118 is connected to an external power supply and ECU (electronic control unit) not shown.
- a connector 130 is formed below the circuit case 116.
- a fuel pump 102 is connected to the connector 130.
- the circuit case 116 is provided with a mounting portion 136. Both ends of the attachment portion 136 are supported by support pieces 134, whereby the circuit case 116 is attached to the set plate 110.
- the set plate 110 is provided with a presser piece 138, and the attaching part 136 and the support piece 134 are held by the presser piece 138. As a result, the circuit case 116 is firmly assembled to the set plate 110.
- the control module includes a component 120 disposed on one surface 116a of the circuit case 116 (that is, one of the two surfaces having the largest area among the six surfaces constituting the circuit case 116). Composed of 122, 126, 128 etc.! 3 ⁇ 4 t3 ⁇ 4 120, 122, 126, 128 forces ⁇
- the installed surface 116a is substantially perpendicular to the set plate 110. The fuel ejected from the pretension regulator 112 becomes sprayed outside the surface 116a!
- the part 122 arranged above the set plate 110 is a choke coil, and the part 120 is a capacitor.
- components 126 and 128 arranged below the set plate 110 are heat-generating electronic components such as a pair transistor.
- Components 126 and 128 are attached to circuit case 116 (specifically, surface 116a of circuit case 116) via heat sink 124. For this reason, the heat generated in the electrical components 126 and 128 is efficiently transmitted to the circuit case 116 via the heat sink 124.
- the connectors 118 and 130 and the electrical components 120, 122, 126 and 128 are connected by a node 132!
- the control circuit 114 is cooled. For this reason, it is possible to suppress the generation of bubbles in the discharge pipe, which does not cause the fuel supplied from the fuel pump 102 to the engine to be overheated. As a result, a desired amount of fuel can be supplied to the engine, and the air-fuel ratio can be accurately controlled.
- the control circuit unit 114 is cooled by the fuel ejected from the pressure regulator 112, the control circuit unit 114 can be sufficiently cooled regardless of the operating state of the engine. it can.
- the heat generating electronic components 126 and 128 are arranged inside the fuel tank 100, and the components 120 and 122 having a smaller heating value than these are the fuel tank 100. Arranged outside. For this reason, the fuel ejected from the pressure regulator 112 comes into contact with the portion where the heat generating electronic components 126 and 128 are disposed, and the control module can be effectively cooled.
- control circuit unit 114 is attached to the set plate 110 substantially vertically so that a part of the control circuit unit 114 protrudes into the fuel tank 100. Therefore, in a state where a large amount of fuel is stored in the fuel tank 100, the control circuit unit 114 is directly immersed in the fuel in the fuel tank 100. Therefore, the control circuit unit 114 can be effectively cooled.
- the present invention is not limited to such an example.
- a configuration as shown in 24 can also be adopted.
- the fuel supply device shown in FIG. 24 is installed in a vertical fuel tank 140.
- the fuel tank 140 is divided into a main tank chamber and a sub tank chamber by a partition 140a.
- a reserve cup 142 is installed in the main tank chamber, and a suction filter 148, a fuel pump 146 and a fuel filter 150 are accommodated in the reserve cup 142.
- a part of the fuel discharged from the fuel pump 146 is supplied to a jet pump 166, which will be described later, from the fuel discharge pipe 162, and the rest is supplied to the fuel filter 150 through the fuel discharge pipe 156.
- Part of the fuel discharged from the fuel filter 150 flows into the fuel pipe 152, and the rest is discharged out of the fuel tank 140 through the fuel discharge passage 158 and the fuel discharge port 160.
- a jet pump 154 is provided at the tip of the fuel pipe 152. The fuel in the main tank chamber is sucked into the reserve cup 142 by injecting fuel into the reserve cup 142 from the jet pump 154.
- a jet pump 166 is installed in the sub tank of the fuel tank 140.
- a fuel discharge pipe 162 is connected to the jet pump 166 via a fuel pipe 164. Accordingly, a part of the fuel discharged from the fuel pump 146 is supplied to the jet pump 166.
- a fuel suction pipe 168 is disposed adjacent to the jet pump 166. The fuel injected from the jet pump 166 flows through the fuel suction pipe 168. The fuel is jetted from the jet pump 166 toward the fuel suction pipe 168, so that the fuel in the sub tank chamber is sucked into the fuel suction pipe 168.
- a fuel pipe 170 is connected to the fuel suction pipe 168, and a fuel injection pipe 172 is connected to the fuel pipe 170.
- the fuel sucked into the fuel suction pipe 168 by the jet pump 166 is injected from the fuel injection pipe 172 into the main tank chamber.
- the fuel injected from the fuel injection pipe 172 is sprayed to the control circuit unit 114 and used to cool the control circuit unit 114. Therefore, in the example shown in FIG. 24, the fuel in the fuel tank 140 is fed into the fuel tank 140 by the fuel discharge pipe 162, the fuel pipes 164, 170, the jet pump 166, the fuel suction pipe 168, and the fuel injection pipe 172.
- the fuel circulation means to circulate is comprised.
- the control circuit unit 114 since the control circuit unit 114 is cooled by the fuel circulating in the fuel tank 140, the fuel supplied to the engine is suppressed from being overheated by the fuel supplied to the engine. be able to. Further, in each of the above-described embodiments, the fuel is sprayed directly on the control circuit unit 114 to cool it. However, the present invention is not limited to such a form. And fuel may be sprayed onto the heat radiating plate. In each of the examples described below, the basic configuration of the control circuit unit is the same as that of the control circuit unit 114 shown in FIGS. 22 and 23. Only the differences are explained.
- the control circuit unit 114 is provided with a heat sink 176.
- Heat-generating electronic components 126 and 128 are disposed on one surface of the heat radiating plate 176, and a heat sink 124 is disposed on the other surface of the heat radiating plate 176. Therefore, the heat of the electronic components 126 and 128 is transmitted to the heat sink 124 and the heat sink 176.
- the heat radiating plate 176 is sprayed with the fuel ejected from the pressure regulator and the fuel pumped up by the jet pump to cool the heat radiating plate 176.
- the lower end of the heat radiating plate 178 is alternately bent into a mountain fold and a valley fold.
- the surface area can be increased, and the contact time between the sprayed fuel and the heat radiating plate 178 can be increased, and the cooling performance thereof can be improved.
- the falling speed of the fuel falling on the heat sink 178 is reduced, it is possible to reduce the noise when the fuel falls.
- a plurality of grooves 182 are formed on the surface of the lower end of the heat radiating plate 178.
- the contact time between the sprayed fuel and the heat radiating plate 178 becomes longer, and the cooling performance can be improved.
- the falling speed of the fuel that falls on the heat sink 178 is reduced, so that the noise when the fuel falls can be reduced.
- a plurality of grooves 186 are formed at the lower end of the heat radiating plate 186, and are formed in a comb shape.
- the surface area of the heat sink 186 can be increased and its cooling performance can be improved.
- the particle size is reduced, and the noise when the fuel falls can be reduced.
- a plurality of circular holes 190 are formed at the lower end of the heat radiating plate 188.
- the surface area of the heat sink 188 can be increased and the cooling performance can be improved.
- the dropping speed can be reduced, and the noise when the fuel falls can be reduced.
- the lower end of the heat radiating plate 192 is twisted.
- the surface area of the heat sink 192 can be increased without increasing the overall length. Thereby, the cooling performance can be improved.
- the speed of the fuel falling while traveling through the heat sink 192 is reduced by the torsion part 194 of the heat sink 192, it is possible to reduce the noise when the fuel falls.
- FIGS. 38 and 39 can be adopted. That is, the first heat radiating plate 196 is attached to the control circuit unit 114, and the second heat radiating plate 200 is attached to the first heat radiating plate 196 using the screws 198. A mounting hole 202 extending in the axial direction is formed in the second heat sink 200 so that the position of the second heat sink 200 with respect to the first heat sink 196 can be adjusted. According to such a configuration, since the lower end of the second heat radiating plate 200 extends to the bottom surface of the fuel tank, the second heat radiating plate 200 is added to the fuel in the fuel tank even when the fuel in the fuel tank is low. The lower end of can be dipped.
- the heat dissipation from the heat sinks 196, 200 can be improved. Further, since the lower end of the second heat radiating plate 200 is immersed in the fuel, it is possible to reduce the falling sound of the fuel that drops the heat radiating plates 196, 200.
- a metal net 206 can be connected to the heat sink 204 using screws 208. Since the metallic net 206 is flexible, it can come into contact with the bottom surface of the fuel tank. Therefore, even if the fuel tank to which the fuel supply device is attached changes and the distance from the upper surface (the surface to which the set plate is attached) to the bottom surface changes, the net 206 having the same length can be used. Further, since the metal net 206 is immersed in the fuel in the fuel tank, the heat dissipation performance of the heat sink 204 is improved. In addition, since the fuel falls while traveling through the metal net 206, the falling sound can be reduced.
- the control circuit unit is cooled by spraying the fuel having the pressure of the jet pump, but the present invention is not limited to such a form.
- a storage container that stores fuel from a pressure regulator is installed in the fuel tank, and the control circuit unit is cooled by the fuel stored in the storage container.
- the lower part of the control circuit unit 114 is accommodated in the storage container 208, and the control circuit unit 114 is directly immersed in the fuel in the storage container 208.
- the control circuit unit 114 can be sufficiently cooled.
- the heat sink 176 is accommodated in the storage container 210, and the heat sink 176 is always immersed in the fuel in the flow container 210.
- the pressure regulator may contact the fuel pipe through which the fuel of the jet pump power flows and the control circuit unit, thereby cooling the control circuit unit.
- the fuel pipe 212 is provided on the surface of the control case 116, and the fuel flowing through the fuel pipe 212 and the control case 116 exchange heat.
- the fuel pipe 214 is provided on the surface of the heat radiating plate 176 so that the fuel flowing through the fuel pipe 214 and the heat radiating plate 176 exchange heat.
- the force for spraying the fuel circulating in the fuel tank onto the circuit case or the like to cool the control module is not limited to such a form. Further, the excess fuel (so-called return fuel to the fuel tank) of the fuel supplied to the outside may be sprayed onto the circuit case or the like for cooling.
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)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/814,693 US7827969B2 (en) | 2005-01-27 | 2006-01-23 | Fuel supply device |
DE112006000280T DE112006000280T5 (de) | 2005-01-27 | 2006-01-23 | Kraftstoffzufuhreinrichtung |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-019483 | 2005-01-27 | ||
JP2005019483 | 2005-01-27 | ||
JP2005-298204 | 2005-10-12 | ||
JP2005298204A JP4410183B2 (ja) | 2005-01-27 | 2005-10-12 | 燃料供給装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006080272A1 true WO2006080272A1 (ja) | 2006-08-03 |
Family
ID=36740303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/300955 WO2006080272A1 (ja) | 2005-01-27 | 2006-01-23 | 燃料供給装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7827969B2 (ja) |
JP (1) | JP4410183B2 (ja) |
DE (1) | DE112006000280T5 (ja) |
WO (1) | WO2006080272A1 (ja) |
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2005
- 2005-10-12 JP JP2005298204A patent/JP4410183B2/ja not_active Expired - Fee Related
-
2006
- 2006-01-23 DE DE112006000280T patent/DE112006000280T5/de not_active Ceased
- 2006-01-23 US US11/814,693 patent/US7827969B2/en not_active Expired - Fee Related
- 2006-01-23 WO PCT/JP2006/300955 patent/WO2006080272A1/ja active Application Filing
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JPS6235088A (ja) * | 1985-08-07 | 1987-02-16 | Nippon Denso Co Ltd | 燃料供給装置 |
JPH0219646A (ja) * | 1988-07-08 | 1990-01-23 | Nippon Denso Co Ltd | 燃料供給装置 |
JPH06280707A (ja) * | 1993-03-24 | 1994-10-04 | Aisan Ind Co Ltd | 電動式燃料ポンプ |
JPH08177668A (ja) * | 1994-12-28 | 1996-07-12 | Nippondenso Co Ltd | 内燃機関用燃料ポンプ制御回路の取付装置 |
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Cited By (3)
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EP2003322B1 (de) * | 2007-06-15 | 2011-12-14 | TI Automotive (Neuss) GmbH | Kraftstoffpumpe mit elektrisch kommutiertem Motor |
JP2010174895A (ja) * | 2010-03-24 | 2010-08-12 | Mitsuba Corp | 燃料供給装置 |
US20170306911A1 (en) * | 2016-04-22 | 2017-10-26 | Coavis | Fuel pump module for improving radiant heat and method for manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
US7827969B2 (en) | 2010-11-09 |
JP2006233955A (ja) | 2006-09-07 |
US20090183715A1 (en) | 2009-07-23 |
DE112006000280T5 (de) | 2007-12-13 |
JP4410183B2 (ja) | 2010-02-03 |
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