WO2013140931A1 - 燃料供給装置 - Google Patents

燃料供給装置 Download PDF

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Publication number
WO2013140931A1
WO2013140931A1 PCT/JP2013/054269 JP2013054269W WO2013140931A1 WO 2013140931 A1 WO2013140931 A1 WO 2013140931A1 JP 2013054269 W JP2013054269 W JP 2013054269W WO 2013140931 A1 WO2013140931 A1 WO 2013140931A1
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WO
WIPO (PCT)
Prior art keywords
fuel
filter
clogging
suction filter
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2013/054269
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English (en)
French (fr)
Japanese (ja)
Inventor
吉田　裕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Astemo Ltd
Original Assignee
Keihin Corp
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 Keihin Corp filed Critical Keihin Corp
Priority to CN201380014936.3A priority Critical patent/CN104204495B/zh
Priority to BR112014023174-5A priority patent/BR112014023174B1/pt
Priority to DE112013001605.2T priority patent/DE112013001605B4/de
Publication of WO2013140931A1 publication Critical patent/WO2013140931A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/103—Mounting pumps on fuel tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • 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
    • 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
    • F02M37/40—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 with means for detection of clogging
    • 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
    • F02M37/50—Filters arranged in or on fuel tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D5/00—Pumps with circumferential or transverse flow
    • F04D5/002—Regenerative pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/001—Preventing vapour lock
    • F04D9/002—Preventing vapour lock by means in the very pump
    • F04D9/003—Preventing vapour lock by means in the very pump separating and removing the vapour
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D2041/224—Diagnosis of the fuel system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D2041/224—Diagnosis of the fuel system
    • F02D2041/226—Fail safe control for fuel injection pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0602—Fuel pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/3082—Control of electrical fuel 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
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • F02M37/0029—Pressure regulator in the low pressure fuel system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
    • F02M37/0058—Returnless fuel systems, i.e. the fuel return lines are not entering the fuel tank
    • 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
    • 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
    • F02M37/14—Feeding by means of driven pumps the pumps being combined with other apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • the present invention relates to an electric motor and a fuel pump having a pump chamber in which a rotating member that is rotationally driven by the electric motor is accommodated, an intake port for sucking fuel into the pump chamber, and fuel from the pump chamber
  • a suction filter that is housed and held in a pump housing having a discharge port for discharging gas and a deaeration hole for discharging vapor generated in the pump chamber, and filters the fuel in the fuel tank and supplies it to the fuel pump Relates to a fuel supply device connected to the suction port.
  • a suction filter for suppressing foreign matter from entering the pump chamber and a vapor generated in the pump chamber are externally provided. It is common to provide a deaeration hole for discharging. In such a fuel supply device, when the suction filter is clogged, there is a problem that the fuel containing foreign matters is sucked into the pump chamber from the deaeration hole. However, there is a fuel supply device that solves such a problem. This is known from Patent Document 1.
  • a return fuel filling area is provided to fill the surplus pressure returned from the regulator out of the fuel discharged from the fuel pump, and the return fuel filling area is communicated with the deaeration hole. Since the fuel stored in the area is clean fuel filtered by the suction filter, when the suction filter is clogged, the fuel in the return fuel-filled area is sucked into the pump chamber from the deaeration hole. Prevents foreign matter from entering the pump chamber. Also, if the fuel level in the return fuel filling area drops below a predetermined position during engine operation after the suction filter is clogged, air will be sucked into the pump chamber from the deaeration hole, causing the engine to malfunction. This makes it possible to prompt the driver to replace the suction filter.
  • the present invention has been made in view of such circumstances, and an object of the present invention is to provide a fuel supply device that can recognize early and accurately that the suction filter is clogged.
  • the present invention provides an intake for causing an electric motor and a fuel pump having a pump chamber in which a rotating member driven to rotate by the electric motor is accommodated to suck fuel into the pump chamber.
  • the fuel is stored in and held in a pump housing having a port, a discharge port for discharging fuel from the pump chamber, and a deaeration hole for discharging vapor generated in the pump chamber, and the fuel in the fuel tank is filtered
  • a suction filter for supplying to a pump is connected to the suction port, a vapor discharge passage means for forming a passage communicating between a portion that becomes a gas phase in the fuel tank and the deaeration hole, and Detection means for detecting the value of the current flowing through the electric motor or the pressure of the fuel discharged from the discharge port, and the suction filter are in a state where no clogging occurs.
  • Filter clogging determining means for determining that clogging has occurred in the suction filter when the detected
  • an electric motor and a fuel pump having a pump chamber in which a rotating member driven to rotate by the electric motor is accommodated, an intake port for sucking fuel into the pump chamber, A suction port for filtering and supplying fuel in a fuel tank which is stored and held in a pump housing having a discharge port for discharging fuel and a deaeration hole for discharging vapor generated in the pump chamber
  • a filter is connected to the suction port, a vapor discharge passage means for forming a passage communicating between the gas phase portion in the fuel tank and the deaeration hole, and a current value flowing through the electric motor or Detection means for detecting the pressure of the fuel discharged from the discharge port, and applying a constant voltage to the electric motor in a state where the suction filter is not clogged.
  • Filter clogging determination means for determining that clogging has occurred in the suction filter when the number of times the detection value of the detection means becomes lower than the current value or pressure when The second feature
  • the filter clogging determination unit is configured to detect the filter with the suction filter when the number of times the detection value of the detection unit crosses a predetermined threshold value exceeds a predetermined number. It is a third feature to determine that clogging has occurred.
  • the present invention further comprises fuel remaining amount detecting means for detecting the remaining amount of fuel in the fuel tank, wherein the remaining amount of fuel is less than a predetermined amount.
  • the filter clogging determining means stops determining whether there is clogging, or determines whether clogging is present, but does not output the determination result.
  • the present invention provides the suction filter according to when the filter clogging determination unit determines that the suction filter is clogged.
  • a fifth feature is provided with notifying means for notifying that clogging has occurred.
  • the pump impeller 11 of the embodiment corresponds to the rotating member of the present invention
  • the control unit 46 of the embodiment corresponds to the filter clogging determining means of the present invention.
  • the value of the current flowing through the electric motor or the pressure of the fuel discharged from the discharge port is detected, and the detected value is applied to the electric motor in a state where the suction filter is not clogged. It is determined that clogging has occurred when the current value when the constant voltage is applied or when the pressure becomes lower than the pressure, and the current value flowing to the electric motor when the suction filter is clogged. Alternatively, since the pressure of the fuel discharged from the discharge port decreases, it is possible to recognize early that the suction filter has become clogged without recognizing engine malfunction.
  • the value of the current flowing through the electric motor or the pressure of the fuel discharged from the discharge port is detected, and the detected value is in a state where the suction filter is not clogged. It is determined that the suction filter is clogged when the number of times the current value or the pressure lower than the pressure when a constant voltage is applied is greater than a certain number of times, and the suction filter is clogged.
  • the inventor of the present application experimented that the introduction of air into the pump chamber from the deaeration hole is started and the introduction of air is intermittent, and the decrease in the current value or the pressure also occurs intermittently.
  • the suction filter is clogged based on the current value or the frequency of the pressure drop, it is possible to detect that the clogging has occurred at an early stage without recognizing engine malfunction. It is possible to identify. In addition, since the clogging determination is performed by a unique event caused by the clogging of the suction filter, the clogging determination can be surely performed.
  • the suction filter when the number of times the current value flowing through the electric motor or the pressure of the fuel discharged from the discharge port decreases over a predetermined threshold value is equal to or greater than a predetermined number, the suction filter Therefore, it is possible to reliably detect the frequency of the current value or the pressure drop.
  • the filter clogging determining means stops determining whether there is clogging, or whether there is clogging.
  • the determination result is not output, the current value flowing into the electric motor or the discharge from the discharge port is caused by the fact that air is sucked into the pump chamber through the suction filter due to the decrease in the fuel remaining in the fuel tank. Even if the pressure of the fuel is reduced, it is not erroneously determined that the suction filter is clogged.
  • the notification means since the notification means notifies that the suction filter is clogged, the driver can easily notice the clogging of the suction filter.
  • FIG. 1 is a longitudinal sectional view of a fuel supply device in a fuel tank.
  • FIG. 2 is a graph showing changes in current value and fuel pressure according to the degree of clogging of the suction filter.
  • FIG. 3 is a graph showing changes in current value and fuel pressure over time when clogging occurs in the suction filter.
  • FIG. 1 A first embodiment of the present invention will be described with reference to FIG. 1 and FIG. 2.
  • a ceiling wall 5 a of a fuel tank 5 mounted on a vehicle such as a motorcycle has an inside of the fuel tank 5.
  • a pump unit 7 for supplying the fuel to the fuel injection valve 6 of the engine is attached.
  • an electric motor 8 and a fuel pump 9 having a pump chamber 12 in which a pump impeller 11, which is a rotating member that is rotationally driven by the electric motor 8, sucks fuel into the pump chamber 12.
  • a pump housing 10 having a suction port 13 for discharging, a discharge port 14 for discharging fuel from the pump chamber 12, and a deaeration hole 15 for discharging vapor generated in the pump chamber 12.
  • the pump housing 10 includes a motor housing 17 of the electric motor 8 and a pump case 18 attached to the lower part of the motor housing 17.
  • the motor housing 17 includes a cylindrical stator 19, an upper bearing bracket 20 that is rotatably supported by an upper end portion of a motor shaft 22 having an axis extending vertically and is caulked and coupled to the upper end portion of the stator 19,
  • a lower bearing bracket 21 is rotatably supported by a lower portion of the motor shaft 22 and is caulked and coupled to a lower end portion of the stator 19.
  • the pump case 18 includes the pump chamber 12 between the lower bearing bracket 21. It is formed and caulked to the lower end portion of the stator 19 together with the lower bearing bracket 21.
  • a lower end portion of the motor shaft 22 passes through the lower bearing bracket 21 to be freely rotatable and enters the pump chamber 12.
  • a pump impeller 11 attached to the lower end portion of the motor shaft 22 is accommodated in the pump chamber 12.
  • the fuel pump 9 is configured.
  • the pump case 18 of the pump housing 10 is integrally provided with a suction side connecting pipe portion 18a that forms a suction port 13 for sucking fuel into the pump chamber 12 and protrudes downward.
  • a deaeration hole 15 for discharging the vapor generated at 12 is provided.
  • the fuel boosted in the pump chamber 12 flows upward in the motor housing 17, and the fuel from the pump chamber 12 is discharged to the upper bearing bracket 20 at the upper portion of the motor housing 17.
  • a discharge-side connecting pipe portion 20a that forms the discharge port 14 that protrudes is integrally projected so as to protrude upward, and a check valve 23 is disposed at the discharge port 14.
  • the pump housing 10 is inserted into a cylindrical casing 24, and an attachment base member 25 fastened to the ceiling wall 5 a of the fuel tank 5 is attached to the upper end portion of the casing 24.
  • the member 25 is provided with a fitting recess 26 for fitting the discharge-side connecting pipe portion 20a in a liquid-tight manner, and a plurality of bolts 27, 27... And nuts 28, 28 are provided on the ceiling wall 5a of the fuel tank 5.
  • a pipe line 30 such as a fuel hose.
  • the mounting base member 25 is formed with an outlet side flow path 32 connecting the fitting recess 26 and the fuel discharge pipe 29, and a pressure adjusting passage 33 branched from the outlet side flow path 32 is formed.
  • the pressure adjusting passage 33 is connected to a regulator valve 34 held by the mounting base member 25 so as to adjust the pressure of the fuel flowing through the outlet side passage 32 to a predetermined pressure.
  • the mounting base member 25 is integrally provided with a coupler 36 protruding outward so that terminals 35 connected to the electric motor 8 are arranged inside.
  • An adapter 37 is attached to the lower end portion of the casing 24 so as to cover the pump case 18 from below, and a suction path 38 into which the suction side connecting pipe portion 18a is fitted is formed in the adapter 37.
  • the connecting tube portion 37a is integrally provided so as to protrude downward, and the suction filter 39 is connected to the lower end portion of the connecting tube portion 37a. That is, the pump unit 7 is arranged in the fuel tank 5 so that the suction filter 39 is connected to the suction port 13 in the suction side connection pipe portion 18a in the fuel tank 5 through the connection cylinder portion 37a. Will be.
  • the deaeration hole 15 is located above the highest level of the liquid level L of the fuel, that is, the portion that becomes a gas phase in the fuel tank 5 through the passage 41 formed by the vapor discharge passage means 40.
  • the fuel tank 5 communicates with the side of the mounting base member 25.
  • the vapor discharge passage means 40 includes a part of the adapter 37 and a pipe 42 that is arranged so as to extend vertically on the side of the casing 24 and has a lower end connected to the adapter 37.
  • the passage 41 is constituted by a passage portion 41a provided in the adapter 37 through the deaeration hole 15 and a passage portion 41b formed in the pipe 42 in communication with the passage portion 41a.
  • a strainer 43 is attached to the upper end of 42.
  • the pressure loss causes the suction port 13 of the fuel pump 9 to have a negative pressure.
  • the pressure loss increases and the suction port 13 has a larger negative pressure.
  • the fuel pump 9 the fuel is pressurized between the suction port 13 and the deaeration hole 15, but when the pressure loss in the suction filter 39 becomes larger than the pressurized amount in that section, the deaeration hole 15 becomes a negative pressure, and a state in which air is sucked into the pump chamber 12 from the deaeration hole 15 occurs. In this case, the pressure of the fuel discharged from the discharge port 14 decreases.
  • the value of the current flowing through the electric motor 8 or the pressure of the fuel discharged from the discharge port 14 is detected, and it is determined whether or not the suction filter 39 is clogged based on the detected value.
  • the detection means 45 for detecting the pressure of the fuel discharged from the discharge port 14 detects the fuel pressure in the outlet-side flow path 32 of the mounting base member 25.
  • the detection means is attached to the control unit 46 as filter clogging determination means which is attached to the attachment base member 25 and is electrically connected to the terminals 35 of the coupler 36 so as to control the operation of the electric motor 8. 45 detection values are input.
  • the control unit 46 uses the suction filter 39 to The control unit 46 is connected to a notifying means 47 for notifying by a lamp display, a screen display or a sound, and the notifying means 47 is connected to the suction filter 39. It is activated when the control unit 46 determines that clogging has occurred.
  • the control unit 46 is connected to a fuel remaining amount detecting means 48 for detecting the fuel remaining amount in the fuel tank 5, and the fuel remaining amount detecting means 48 is a level of fuel in the fuel tank 5.
  • a detector 49 attached to the attachment base member 25 at an upper position, an arm 50 whose base end portion is rotatably supported by a case 49a of the detector 49, and a float attached to the distal end portion of the arm 50. 51.
  • the remaining amount of fuel is detected by detecting the amount of rotation of the arm 50 due to the change in the liquid level L by the detector 49, and the signal from the detector 49 Input to the control unit 46.
  • the control unit 46 stops determining whether there is clogging or determines whether there is clogging. However, the determination result is not output.
  • the control unit 46 stops determining whether there is clogging or determines whether there is clogging but does not output the determination result. Even if the pressure of the fuel discharged from the discharge port 14 decreases due to air being sucked into the pump chamber 12 through the suction filter 39 due to a decrease in the remaining amount of fuel in the fuel tank 5, the suction filter 39 is not erroneously determined as clogged.
  • the notification means 47 notifies that the suction filter 39 is clogged, the driver can easily notice the clogging of the suction filter 39.
  • the inventor of the present application when an air suction event from the deaeration hole 15 to the pump chamber 12 occurs due to clogging in the suction filter 39, in the initial stage, as shown in FIG.
  • the pressure of the fuel discharged from the outlet 14 and the value of the current flowing through the electric motor 8 with a constant voltage applied are intermittently reduced, and the phenomenon of sucking air into the pump chamber 12 from the deaeration hole 15 occurs intermittently.
  • the control unit 46 determines that the pressure detected by the detection means 45 is higher than the pressure of the fuel discharged from the discharge port 14 in a state where the suction filter 39 is not clogged. When the number of times of decrease becomes equal to or greater than a certain number of times, it is determined that the suction filter 39 is clogged. In this determination, the control unit 46 determines that the detection value of the detection means 45 is a predetermined threshold value ( When the number of times of straddling exceeds a certain number, it is determined that the suction filter 39 is clogged.
  • the introduction of air is intermittent at the initial stage where clogging occurs in the suction filter 39 and the introduction of air from the deaeration hole 15 to the pump chamber 12 begins.
  • the clogging of the suction filter 39 is determined from the frequency of the pressure reduction, thereby recognizing that the engine has failed. It can be recognized early without depending on.
  • the clogging determination is performed based on a unique event caused by the clogging of the suction filter 39, the clogging determination can be surely performed.
  • the suction filter 39 since it is determined that the suction filter 39 is clogged when the number of times the pressure of the fuel discharged from the discharge port 14 drops over a predetermined threshold value exceeds a certain number, the current value Or the frequency of the said pressure fall can be detected reliably.
  • the detection means 45 may detect a value of a current flowing through the electric motor 8, and in that case, the control unit 46 may cause the suction filter 39 to be clogged.
  • a determination is made as to whether or not the suction filter 39 is clogged by comparing the current value when a constant voltage is applied to the electric motor 8 in a non-occurring state and the current value detected by the detecting means 45.
  • the present invention can also be applied to the case where the pump housing 10 is disposed outside the fuel tank 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
PCT/JP2013/054269 2012-03-22 2013-02-21 燃料供給装置 Ceased WO2013140931A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201380014936.3A CN104204495B (zh) 2012-03-22 2013-02-21 燃料供应装置
BR112014023174-5A BR112014023174B1 (pt) 2012-03-22 2013-02-21 Dispositivo de abastecimento de combustível
DE112013001605.2T DE112013001605B4 (de) 2012-03-22 2013-02-21 Kraftstoffzufuhrvorrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-066127 2012-03-22
JP2012066127A JP5999945B2 (ja) 2012-03-22 2012-03-22 燃料供給装置

Publications (1)

Publication Number Publication Date
WO2013140931A1 true WO2013140931A1 (ja) 2013-09-26

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CN (1) CN104204495B (enrdf_load_stackoverflow)
BR (1) BR112014023174B1 (enrdf_load_stackoverflow)
DE (1) DE112013001605B4 (enrdf_load_stackoverflow)
WO (1) WO2013140931A1 (enrdf_load_stackoverflow)

Cited By (1)

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WO2021024302A1 (ja) * 2019-08-02 2021-02-11 三菱電機株式会社 車両用燃料ポンプ制御装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6001585B2 (ja) * 2014-03-26 2016-10-05 本田技研工業株式会社 燃料供給装置
JP6257445B2 (ja) * 2014-05-21 2018-01-10 株式会社ミツバ 燃料供給装置
JP6608328B2 (ja) * 2016-04-20 2019-11-20 愛三工業株式会社 燃料供給装置
JP6640261B2 (ja) * 2018-03-23 2020-02-05 本田技研工業株式会社 燃料ポンプモジュール
FR3108368B1 (fr) * 2020-03-18 2023-10-13 Vitesco Technologies Procédé d’évaluation d’un intervalle de service pour le remplacement d’un dispositif de filtration de liquide aqueux d’un véhicule automobile

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JP2010001761A (ja) * 2008-06-18 2010-01-07 Aisan Ind Co Ltd 燃料供給装置
JP2010106682A (ja) * 2008-10-28 2010-05-13 Isuzu Motors Ltd 内燃機関の燃料フィルタの目詰まり寿命判定方法及びこれを用いる内燃機関
JP2010229996A (ja) * 2009-03-06 2010-10-14 Aisan Ind Co Ltd 燃料供給装置
JP2011122518A (ja) * 2009-12-10 2011-06-23 Denso Corp 燃料噴射システムのフィルタ異常警告方法
JP2011185222A (ja) * 2010-03-10 2011-09-22 Keihin Corp 燃料供給系異常検出装置

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JP2008514851A (ja) * 2004-09-24 2008-05-08 ミレニアム インダストリーズ コーポレイション 複式ポンプ燃料供給システム
JP2010001761A (ja) * 2008-06-18 2010-01-07 Aisan Ind Co Ltd 燃料供給装置
JP2010106682A (ja) * 2008-10-28 2010-05-13 Isuzu Motors Ltd 内燃機関の燃料フィルタの目詰まり寿命判定方法及びこれを用いる内燃機関
JP2010229996A (ja) * 2009-03-06 2010-10-14 Aisan Ind Co Ltd 燃料供給装置
JP2011122518A (ja) * 2009-12-10 2011-06-23 Denso Corp 燃料噴射システムのフィルタ異常警告方法
JP2011185222A (ja) * 2010-03-10 2011-09-22 Keihin Corp 燃料供給系異常検出装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021024302A1 (ja) * 2019-08-02 2021-02-11 三菱電機株式会社 車両用燃料ポンプ制御装置
JPWO2021024302A1 (ja) * 2019-08-02 2021-11-04 三菱電機株式会社 車両用燃料ポンプ制御装置

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BR112014023174B1 (pt) 2021-08-31
BR112014023174A2 (enrdf_load_stackoverflow) 2017-06-20
DE112013001605T5 (de) 2015-04-16
JP5999945B2 (ja) 2016-09-28
CN104204495B (zh) 2016-10-05
JP2013194711A (ja) 2013-09-30
DE112013001605B4 (de) 2023-07-27
CN104204495A (zh) 2014-12-10

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