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US20070189907A1 - Pump apparatus, system having the same, and method for operating the same - Google Patents

Pump apparatus, system having the same, and method for operating the same Download PDF

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Publication number
US20070189907A1
US20070189907A1 US11/640,987 US64098706A US2007189907A1 US 20070189907 A1 US20070189907 A1 US 20070189907A1 US 64098706 A US64098706 A US 64098706A US 2007189907 A1 US2007189907 A1 US 2007189907A1
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US
United States
Prior art keywords
pressure
rotor
motor
vane
gas
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.)
Abandoned
Application number
US11/640,987
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English (en)
Inventor
Seiji Kunihiro
Hitoshi Amano
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.)
Denso Corp
Original Assignee
Denso 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 Denso Corp filed Critical Denso Corp
Assigned to DENSO CORPORATION reassignment DENSO CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AMANO, HITOSHI, KUNIHIRO, SEIJI
Publication of US20070189907A1 publication Critical patent/US20070189907A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/0809—Judging failure of purge control system
    • F02M25/0818—Judging failure of purge control system having means for pressurising the evaporative emission space
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/08—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/28—Safety arrangements; Monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/80—Diagnostics

Definitions

  • the present invention relates to a pump apparatus, a system having the same, and a method for operating the same.
  • a leak check system detects leakage in an evaporator system through which fuel vapor is purged from a fuel tank into an intake passage.
  • a pump decreases or increases pressure in the evaporator system, so that a leak check operation is conducted in accordance with pressure in the evaporator system.
  • a vane type pump may be used for decreasing or increasing pressure of gas.
  • the vane pump includes a housing that eccentrically accommodates a rotor.
  • the rotor has vanes that are radially movable in the rotor.
  • the rotor rotates, thereby generating centrifugal force, so that the centrifugal force is applied to the vanes.
  • the vanes slide along the inner circumferential periphery of the housing while being urged onto the inner circumferential periphery of the housing.
  • the vanes decrease or increase pressure of gas while radially reciprocating in the rotor.
  • dew condensation may occur between the rotor and the vanes in dependence upon ambient temperature and moisture, for example.
  • the vanes adhere to the rotor due to dew condensation, the vanes cannot radially extend outwardly from the rotor by being applied with the centrifugal force. Accordingly, the vanes cannot slide on the inner circumferential periphery of the housing. In this condition, the vane type pump cannot sufficiently decrease or increase pressure of gas.
  • a pump apparatus includes a housing.
  • the pump apparatus further includes a rotor that is eccentrically accommodated in the housing.
  • the pump apparatus further includes a motor for rotating the rotor.
  • the pump apparatus further includes a vane that is substantially radially movable relative to the rotor.
  • the vane has a radially outer end that is slidable relative to an inner circumferential periphery of the housing as both the rotor and the vane rotate for increasing or decreasing pressure of gas.
  • the pump apparatus further includes a pressure sensor that detects pressure of the gas.
  • the pump apparatus further includes a control unit that evaluates whether an adherence abnormality, in which the vane adheres to the rotor, occurs, in accordance with both a detection signal of the pressure sensor and electricity supplied to the motor when the motor rotates the rotor.
  • the control unit determines the adherence abnormality to be caused, the control unit operates the motor to remove the vane from the rotor.
  • a leak check system for an evaporator system which is adapted to purging fuel vapor from a fuel tank into an intake passage of an internal combustion engine
  • the leak check system includes the above pump apparatus for decreasing or increasing pressure in the evaporator system.
  • the leak check system further includes a reference orifice for detecting reference pressure used for evaluating whether leakage occurs in the evaporator system.
  • the leak check system further includes an evaluating unit that evaluates whether leakage occurs in the evaporator system by comparing pressure detected using the pressure sensor with the reference pressure when the pump apparatus decreases or increases pressure in the evaporator system.
  • the control unit evaluates whether the adherence abnormality occurs in accordance with both a detection signal of the pressure sensor and electricity supplied to the motor when detecting the reference pressure.
  • a method which is for operating a pump apparatus, includes supplying electricity to a motor for rotating a rotor and radially extending a vane from the rotor by centrifugal force for increasing or decreasing pressure of gas.
  • the method further includes detecting pressure of the gas.
  • the method further includes evaluating whether the vane adheres to the rotor in accordance with both the pressure of the gas and the electricity supplied to the motor.
  • the method further includes operating the motor to remove the vane from the rotor when determining the vane to be adhering to the rotor.
  • a method for operating a system includes operating a switching valve to communicate a pump with the system through a reference orifice.
  • the method further includes supplying electricity to a motor of a pump for rotating a rotor and radially extending a vane from the rotor by centrifugal force for increasing or decreasing pressure of gas in the system through the reference orifice.
  • the method further includes detecting pressure of the gas.
  • the method further includes evaluating whether both the pump and the switching valve are normal, in accordance with both the pressure of the gas and the electricity supplied to the motor when detecting the pressure of the gas.
  • the method further includes operating the switching valve to communicate the pump directly with the system when both the pump and the switching valve are determined to be normal.
  • the method further includes evaluating whether leakage occurs in the system by comparing a time trend of the pressure of the gas with a predetermined time trend.
  • a method for operating a system includes operating a switching valve to communicate a pump with the system through a reference orifice.
  • the method further includes supplying electricity to a motor of a pump for rotating a rotor and radially extending a vane from the rotor by centrifugal force for increasing or decreasing pressure of gas in the system through the reference orifice.
  • the method further includes detecting pressure of the gas.
  • the method further includes evaluating whether both the pump and the switching valve are normal in accordance with both the pressure of the gas and the electricity supplied to the motor when detecting the pressure of the gas.
  • the method further includes determining the vane to be adhering to the rotor when pressure of the gas is abnormal and electricity supplied to the motor is equal to or greater than predetermined threshold.
  • the method further includes determining the switching valve to be abnormal when pressure of the gas is abnormal and when electricity supplied to the motor is less than predetermined threshold.
  • FIG. 1 is a schematic view showing a leak check system
  • FIG. 2 is a sectional view showing a pump module of the leak check system
  • FIG. 3 is a time chart showing change in pressure in a leak check operation
  • FIG. 4 is a time chart showing change in pressure and a motor current in a normal condition
  • FIG. 5 is a time chart showing change in pressure and a motor current in an abnormal condition
  • FIG. 6 is a time chart showing change in pressure and a motor current in an abnormal condition in which dew condensation is caused.
  • FIG. 7 is a flowchart showing the leak check operation.
  • a fuel tank 10 connects with a canister 12 through a passage 200 .
  • the canister 12 connects with an intake passage 16 through a purge passage 202 .
  • the purge passage 202 is provided with a purge valve 14 .
  • Fuel evaporates in the fuel tank 10 , and the fuel becomes fuel vapor.
  • the fuel vapor passes from the fuel tank 10 into the canister 12 through the passage 200 , so that the fuel vapor is absorbed into an absorbent such as activated charcoal provided in the canister 12 .
  • the purge valve 14 is actuated using a solenoid device, for example.
  • An amount of fuel vapor, which is purged from the canister 12 into the intake passage 16 is adjusted by controlling the purge valve 14 .
  • a leak check system includes a pump module 20 and an electronic control unit (ECU) 100 .
  • the ECU 100 serves as both a control unit and an evaluating unit.
  • the leak check system conducts a leak check operation for checking leakage caused in an evaporator system.
  • the evaporator system is constructed of the fuel tank 10 , the canister 12 , the purge valve 14 , the passage 200 , and the purge passage 202 .
  • the canister 12 has an atmospheric port that connects with a switching valve 30 of the pump module 20 through an atmospheric passage 204 .
  • the atmospheric port of the canister 12 connects with a pump 60 of the pump module 20 through a detection passage 206 that branches from the atmospheric passage 204 .
  • the pump 60 is a vane type pump that includes multiple vanes, for example.
  • the detection passage 206 is provided with a reference orifice 52 a.
  • the pump module 20 is constructed by integrating the switching valve 30 and the pump 60 to be an integrated module.
  • the pump module 20 and the ECU 100 construct a pump apparatus.
  • the switching valve 30 of the pump module 20 is operated using a solenoid device, for example.
  • the switching valve 30 includes a coil 36 .
  • the switching valve 30 communicates the atmospheric passage 204 with an atmospheric passage 208 when electricity supply to the coil 36 is terminated.
  • the atmospheric passage 208 has an end, which is provided with a filter 92 , on the opposite side of the switching valve 30 .
  • the canister 12 communicates directly with the pump 60 through the atmospheric passage 204 by substantially bypassing the detection passage 206 .
  • the pump module 20 has the atmospheric passages 204 , 208 , and the detection passage 206 .
  • the atmospheric passage 204 regularly communicates with the detection passage 206 .
  • a canister port 50 of the pump module 20 defines part of the detection passage 206 .
  • the canister port 50 is provided with a cup member 52 that defines the reference orifice 52 a.
  • the reference orifice 52 a is used when the pump 60 decreases pressure in the evaporator system for evaluating pressure at which the interior in the evaporator system reaches.
  • the reference orifice 52 a is used for evaluating a hole in the evaporator system.
  • Filters 54 are provided to upstream and downstream of the reference orifice 52 a.
  • the switching valve 30 of the pump module 20 is actuated using a solenoid device.
  • the switching valve 30 includes a movable core 34 that is opposed to a stationary core 32 .
  • the movable core 34 is provided with a shaft 40 to which valve members 42 , 43 are provided.
  • the valve members 42 , 43 are formed of rubber, for example.
  • the valve members 42 , 43 are axially depart from each other.
  • FIG. 2 when electricity supply to the coil 36 is terminated, the valve member 42 blocks the canister port 50 , and the valve member 43 communicates an atmospheric port 56 .
  • the atmospheric passage 204 communicates with the atmospheric passage 208
  • the detection passage 206 communicates with the atmospheric passage 208 through the atmospheric passage 204 .
  • the stationary core 32 and the movable core 34 When electricity is supplied to the coil 36 , the stationary core 32 and the movable core 34 generate magnetic attractive force therebetween, so that the movable core 34 moves toward the stationary core 32 upwardly in FIG. 2 .
  • the valve member 42 communicates the canister port 50 , and the valve member 43 blocks the atmospheric port 56 .
  • the atmospheric passage 204 communicates directly with the pump 60 by substantially bypassing the detection passage 206 , and the atmospheric passage 204 is blocked from the atmospheric passage 208 .
  • the pump 60 of the pump module 20 is a vane type pump including an electric motor 62 for rotating a rotor 70 .
  • the pump 60 includes the rotor 70 , vanes 72 , and a housing 74 that are formed of resin, for example.
  • the rotor 70 has four slits that are arranged circumferentially at regular intervals. Each of the four slits radially extends in the rotor 70 .
  • Each of the vanes 72 is in a substantially plate shape.
  • Each vane 72 is radially movable in each slit of the rotor 70 .
  • the housing 74 is in a substantially annular shape.
  • the housing 74 accommodates the rotor 70 .
  • the rotor 70 is eccentric with respect to the housing 74 .
  • the rotor 70 is rotatable relative to the housing 74 .
  • the motor 62 rotates the rotor 70 , which is eccentric with respect to the housing 74 , so that centrifugal force is applied radially outwardly to each vane 72 .
  • Each vane 72 radially reciprocates while sliding relative to the inner circumferential periphery of the housing 74 along the inner circumferential periphery of the housing 74 .
  • the pump 60 has an inlet port 80 that is provided with a filter 82 .
  • a pressure sensor 90 detects pressure in the vicinity of the inlet port 80 of the pump 60 . In this structure of the pump 60 , the rotor 70 rotates, and each vane 72 radially reciprocates, so that either the atmospheric passage 204 or the detection passage 206 is reduced in pressure.
  • the ECU 100 includes a CPU, a ROM, an I/O interface, and the like.
  • the CPU of the ECU 100 executes a control program stored in the ROM, so that the ECU 100 controls driving signals for operating the switching valve 30 and the motor 62 of the pump 60 of the pump module 20 .
  • the ECU 100 inputs pressure detection signal P from the pressure sensor 90 .
  • the ECU 100 detects atmospheric pressure Patm in accordance with the detection signal P of the pressure sensor 90 in a condition where the ECU 100 terminates electricity supply to the switching valve 30 and the motor 62 of the pump 60 .
  • the ECU 100 may not conduct the leak check operation.
  • the atmospheric pressure Patm detected using the pressure sensor 90 may be used as a correction value for evaluating pressure in the following leak check operation.
  • step 300 the ECU 100 supplies electricity to the motor 62 to start the operation of the pump 60 in the condition in which the ECU 100 terminates electricity supply to the switching valve 30 , as referred to FIG. 1 .
  • the pump 60 communicates with the atmosphere through the detection passage 206 , the atmospheric passage 204 , the switching valve 30 , the atmospheric passage 208 , and the filter 92 .
  • the routine proceeds to step 302 of FIG. 7 , in which the ECU 100 detects reference pressure Pref using the pressure sensor 90 when the pump 60 is operated in the period B in FIG. 3 .
  • the reference pressure Pref is determined in dependence upon the passage area corresponding to the inner diameter of the reference orifice 52 a.
  • step 304 of FIG. 7 the ECU 100 evaluates the reference pressure Pref detected using the pressure sensor 90 .
  • the routine proceeds to step 306 , in which the ECU 100 supplies electricity to the switching valve 30 to operate the switching valve 30 .
  • the switching valve 30 communicates the pump 60 directly with the atmospheric passage 204 in the vicinity of the canister 12 , and substantially blocks the atmospheric passage 204 from the atmospheric passage 208 .
  • the ECU 100 checks leakage pressure. Specifically, the ECU 100 operates the pump 60 to reduce pressure in the evaporator system constructed of the fuel tank 10 , the canister 12 , the purge valve 14 , the passage 200 , and the purge passage 202 , so that the ECU 100 evaluates leakage in the evaporator system in accordance with a time trend of the detection pressure P.
  • step 308 the ECU 100 compares the time trend of the detection pressure P of the pressure sensor 90 with a curve 220 in FIG. 3 , so that the ECU 100 evaluates whether leakage occurs in the evaporator system due to a hole greater than the passage area in the reference orifice 52 a.
  • a curve 222 in the period C of FIG. 3 depicts a time trend of the pressure in the evaporator system when the evaporator system has a hole, which is equal to the passage area in the reference orifice 52 a.
  • the ECU 100 determines that the evaporator system causes a leakage through a hole less than the reference orifice 52 a.
  • the detection pressure P in the evaporator system quickly decreases by the pump 60 , so that the ECU 100 determines that leakage in the evaporator system is small.
  • the ECU 100 determines that the evaporator system causes a leakage through a hole greater than the passage area in the reference orifice 52 a. In this case, the detection pressure P in the evaporator system slowly decreases even the pump 60 draws gas from the evaporator system, consequently, the ECU 100 determines that leakage in the evaporator system is large.
  • step 304 when the reference pressure Pref is greater than the normal pressure range P 1 , as shown in FIGS. 5 , 6 , the ECU 100 determines an abnormality to be caused.
  • the routine proceeds to step 310 , in which ECU 100 detects a motor current E, which corresponds to electricity supplied to the motor 62 of the pump 60 .
  • the routine proceeds to step 312 , in which the ECU 100 evaluates the motor current E.
  • the motor current E is small in a normal electricity range I 1 , a failure may be caused in a portion excluding the evaporator system. In this condition, for example, failure may be caused in a sealing structure of the switching valve 30 , and consequently, load applied to the pump 60 may become small.
  • the valve member 42 may not sufficiently block the canister port 50 .
  • the atmospheric passage 204 may communicate directly with the pump 60 by substantially bypassing the reference orifice 52 a.
  • the passage area connecting with the pump 60 may become large compared with the reference orifice 52 a, and consequently, load applied to the motor 62 of the pump 60 for drawing gas from the evaporator system decreases.
  • step 320 in which the ECU 100 cancels the leak check operation, so that the routine shown in FIG. 7 is terminated.
  • the ECU 100 may generate an alarm for notifying malfunction caused in the switching valve 30 , for example.
  • the ECU 100 determines a failure to be caused in the pump 60 . Specifically, in this case, the ECU 100 determines that the vane 72 adheres to the rotor 70 because of dew condensation or the like. In this condition, the vane 72 cannot radially outwardly move even being applied with the centrifugal force. Consequently, the pump 60 cannot sufficiently reduce pressure in the detection passage 206 through the reference orifice 52 a. In this case, the ECU 100 determines the motor 62 to be applied with large load due to surface tension applied between the rotor 70 and the housing 74 because of dew condensation, and consequently, the motor current E is greater than the normal electricity range I 1 .
  • step 314 in which the ECU 100 supplies electricity to the motor 62 of the pump 60 to operate the pump 60 .
  • the ECU 100 operates the pump 60 , thereby rotating the rotor 70 in a condition excluding a normal timing of the leak check operation.
  • dew condensation can be removed by, for example, heat generated by sliding the rotor 70 relative to the housing 74 .
  • step 314 the ECU 100 operates the pump 60 , and in steps 316 , 318 , the ECU 100 inputs the detection pressure P of the pressure sensor 90 and evaluates the detection pressure P.
  • the ECU 100 repeats the operation in steps 310 , 312 , 314 , 316 , 318 until the detection pressure P becomes within the normal pressure range P 1 . In this operation, dew condensation in the pump 60 can be removed in a short period by increasing the rotation speed of the motor 62 to be greater than rotation speed in a normal operating condition.
  • step 318 when the detection pressure P becomes within the normal pressure range P 1 , the ECU 100 determines the motor current E to be also within the normal electricity range I 1 , so that the routine proceeds to step 306 .
  • step 306 the ECU 100 checks the leakage pressure in the evaporator system.
  • the ECU 100 evaluates whether dew condensation is caused in accordance with evaluation of the motor current E. In this operation, the routine can be restricted from proceeding to step 306 in a condition in which the pump 60 cannot sufficiently reduce pressure because the vane 72 adheres to the rotor 70 due to dew condensation. Therefore, the leak check operation can be restricted from being erroneously conducted.
  • the ECU 100 when the reference pressure Pref is out of the normal pressure range P 1 , the ECU 100 operates the pump 60 , thereby removing the dew condensation in a condition excluding the normal timing of the leak check operation. Thus, the ECU 100 can properly conduct the leak check operation after removing the dew condensation.
  • Dew condensation of the pump 60 may be removed by operating the motor 62 for a period longer than a normal period for detecting the reference pressure Pref.
  • a timer period may be set longer than a normal timer period, which is set for detecting the reference pressure Pref.
  • the vane type pump apparatus in this embodiment may be applied to any purposes other than the leak check system, as long as the vane type pump apparatus includes a pump that decreases or increases pressure of gas.
  • the leak check operation may be conducted by increasing pressure in an evaporator system.
  • the functions of the units may be produced using a hardware resource having functions specified by a physical construction thereof, a hardware resource having functions specified by a program, or a combination of the hardware resources.
  • the functions of the units are not limited to be produced using hardware resources, which are physically individual from each other.
  • the number of the vanes 72 is not limited to four.
  • the number of the slits in the rotor 70 is not also limited to four.
  • the numbers of the vanes 72 and corresponding slits of the rotor 70 may be determined as appropriate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Testing Of Engines (AREA)
US11/640,987 2006-02-16 2006-12-19 Pump apparatus, system having the same, and method for operating the same Abandoned US20070189907A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-39180 2006-02-16
JP2006039180A JP2007218161A (ja) 2006-02-16 2006-02-16 ベーン式ポンプ装置およびそれを用いたリークチェックシステム

Publications (1)

Publication Number Publication Date
US20070189907A1 true US20070189907A1 (en) 2007-08-16

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US11/640,987 Abandoned US20070189907A1 (en) 2006-02-16 2006-12-19 Pump apparatus, system having the same, and method for operating the same

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JP (1) JP2007218161A (ja)

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* Cited by examiner, † Cited by third party
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US20120047999A1 (en) * 2010-08-27 2012-03-01 Denso Corporation Vane pump apparatus and leak check system having the same
WO2012080177A1 (de) * 2010-12-15 2012-06-21 Continental Automotive Gmbh Brennkraftmaschine mit verbesserter tankreinigung
US20140026867A1 (en) * 2012-07-25 2014-01-30 Denso Corporation Fuel vapor purge device
CN103726955A (zh) * 2012-10-15 2014-04-16 通用汽车环球科技运作有限责任公司 控制检查蒸发排放物系统的泄漏用的真空泵的系统和方法
US20140102421A1 (en) * 2012-10-11 2014-04-17 Denso Corporation Fuel vapor leakage detection method
US8955369B2 (en) 2011-10-19 2015-02-17 Denso Corporation Fuel vapor leak detecting device and fuel vapor leak detecting method using the same
US20150090235A1 (en) * 2013-10-01 2015-04-02 Ford Global Technologies, Llc Cpv-controlled evap leak detection system
US9046060B2 (en) 2012-02-17 2015-06-02 Denso Corporation Fuel vapor leakage sensing apparatus and fuel vapor leakage sensing method using the same
US9176022B2 (en) 2013-03-15 2015-11-03 GM Global Technology Operations LLC System and method for diagnosing flow through a purge valve based on a fuel system pressure sensor
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US20160321714A1 (en) * 2009-09-04 2016-11-03 Ips Group Inc. Parking meter communications for remote payment with updated display
US10141629B2 (en) 2008-12-23 2018-11-27 J.J. Mackay Canada Limited Single space wireless parking with improved antenna placements
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US10299018B1 (en) 2016-02-29 2019-05-21 Ips Group Inc. Pole-mounted vehicle sensor
USD863074S1 (en) 2015-10-16 2019-10-15 J. J. Mackay Canada Limited Parking meter
US10584663B1 (en) 2018-10-22 2020-03-10 Denso International America, Inc. Evaporative fuel leak check system
USD911857S1 (en) 2019-02-20 2021-03-02 Ips Group Inc. Sensor enhanced parking meter
US11074612B2 (en) 2009-09-04 2021-07-27 Ips Group Inc. Location-aware advertising to vending machine users
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USD959298S1 (en) 2020-11-19 2022-08-02 Ips Group Inc. Meter cover
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USD986084S1 (en) 2020-10-01 2023-05-16 Ips Group Inc. Pole-mounted sensor
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USD996237S1 (en) 2020-11-19 2023-08-22 Ips Group Inc. Sensor enhanced meter
US11764593B2 (en) 2007-03-30 2023-09-19 Ips Group Inc. Power supply unit
US11762479B2 (en) 2019-01-30 2023-09-19 J.J. Mackay Canada Limited SPI keyboard module for a parking meter and a parking meter having an SPI keyboard module
USD1011933S1 (en) 2020-10-01 2024-01-23 Ips Group Inc. Pole-mounted sensor
US11922756B2 (en) 2019-01-30 2024-03-05 J.J. Mackay Canada Limited Parking meter having touchscreen display
US11972654B2 (en) 2015-08-11 2024-04-30 J.J. Mackay Canada Limited Lightweight vandal resistant parking meter
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Publication number Priority date Publication date Assignee Title
JP6008098B2 (ja) * 2012-07-12 2016-10-19 三菱自動車工業株式会社 バキュームポンプの耐久寿命判定装置
JP6146048B2 (ja) * 2013-02-27 2017-06-14 株式会社デンソー ベーン式ポンプ、および、それを用いる燃料蒸気漏れ検出装置
JP2020200793A (ja) * 2019-06-10 2020-12-17 株式会社デンソー 漏れ診断装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5515676A (en) * 1991-12-18 1996-05-14 Wabco Automotive Uk Limited Vacuum pump motor control apparatus and method of operation thereof
US6161423A (en) * 1998-03-20 2000-12-19 Unisia Jecs Corporation Apparatus and method for diagnosing leaks of fuel vapor treatment unit
US20030015022A1 (en) * 2001-06-22 2003-01-23 Volker Stegmann Method and device for diagnosing tank leaks using a reference measuring method
US6550315B2 (en) * 2000-04-13 2003-04-22 Robert Bosch Gmbh Method and arrangement for checking the tightness of a vessel
US6604407B2 (en) * 2001-04-03 2003-08-12 Denso Corporation Leak check apparatus for fuel vapor purge system
US6820467B2 (en) * 2002-02-01 2004-11-23 Robert Bosch Gmbh Method and arrangement for checking the tightness of a vessel
US6834535B2 (en) * 2001-09-17 2004-12-28 Denso Corporation Fuel vapor treatment system
US6959587B2 (en) * 2001-04-04 2005-11-01 Robert Bosch Gmbh Heatable tank leakage diagnosis unit, particularly for motor vehicles
US6966214B2 (en) * 2003-06-16 2005-11-22 Hitachi, Ltd. Leakage diagnosis apparatus for fuel vapor purge system and method thereof
US7121137B2 (en) * 2003-09-22 2006-10-17 Hitachi, Ltd. Diagnosis apparatus for air transfer apparatus and method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01127844A (ja) * 1987-11-13 1989-05-19 Matsushita Electric Ind Co Ltd 空気調和機の圧縮機制御装置
JP4117839B2 (ja) * 2003-04-23 2008-07-16 株式会社デンソー エバポガスパージシステムのリーク診断装置

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5515676A (en) * 1991-12-18 1996-05-14 Wabco Automotive Uk Limited Vacuum pump motor control apparatus and method of operation thereof
US6161423A (en) * 1998-03-20 2000-12-19 Unisia Jecs Corporation Apparatus and method for diagnosing leaks of fuel vapor treatment unit
US6550315B2 (en) * 2000-04-13 2003-04-22 Robert Bosch Gmbh Method and arrangement for checking the tightness of a vessel
US6604407B2 (en) * 2001-04-03 2003-08-12 Denso Corporation Leak check apparatus for fuel vapor purge system
US6959587B2 (en) * 2001-04-04 2005-11-01 Robert Bosch Gmbh Heatable tank leakage diagnosis unit, particularly for motor vehicles
US20030015022A1 (en) * 2001-06-22 2003-01-23 Volker Stegmann Method and device for diagnosing tank leaks using a reference measuring method
US6845652B2 (en) * 2001-06-22 2005-01-25 Robert Bosch Gmbh Method and device for diagnosing tank leaks using a reference measuring method
US6834535B2 (en) * 2001-09-17 2004-12-28 Denso Corporation Fuel vapor treatment system
US6820467B2 (en) * 2002-02-01 2004-11-23 Robert Bosch Gmbh Method and arrangement for checking the tightness of a vessel
US6966214B2 (en) * 2003-06-16 2005-11-22 Hitachi, Ltd. Leakage diagnosis apparatus for fuel vapor purge system and method thereof
US7121137B2 (en) * 2003-09-22 2006-10-17 Hitachi, Ltd. Diagnosis apparatus for air transfer apparatus and method thereof

Cited By (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11764593B2 (en) 2007-03-30 2023-09-19 Ips Group Inc. Power supply unit
US10573953B2 (en) 2008-12-23 2020-02-25 J.J. Mackay Canada Limited Single space wireless parking with improved antenna placements
US11670835B2 (en) 2008-12-23 2023-06-06 J.J Mackay Canada Limited Single space wireless parking with improved antenna placements
US10998612B2 (en) 2008-12-23 2021-05-04 J.J. Mackay Canada Limited Single space wireless parking with improved antenna placements
US12368227B2 (en) 2008-12-23 2025-07-22 J.J. Mackay Canada Limited Single space wireless parking with improved antenna placements
US10141629B2 (en) 2008-12-23 2018-11-27 J.J. Mackay Canada Limited Single space wireless parking with improved antenna placements
US20160321714A1 (en) * 2009-09-04 2016-11-03 Ips Group Inc. Parking meter communications for remote payment with updated display
US10262345B2 (en) * 2009-09-04 2019-04-16 Ips Group Inc. Parking meter communications for remote payment with updated display
US11430027B2 (en) 2009-09-04 2022-08-30 Ips Group Inc. Parking meter communications for remote payment with updated display
US11436649B2 (en) 2009-09-04 2022-09-06 Ips Group Inc. Parking meter communications for remote payment with updated display
US11475491B2 (en) 2009-09-04 2022-10-18 Ips Group Inc. Parking meter communications for remote payment with updated display
US10664880B2 (en) * 2009-09-04 2020-05-26 Ips Group, Inc. Parking meter communications for remote payment with updated display
US11776022B2 (en) 2009-09-04 2023-10-03 Ips Group Inc. Parking meter communications for remote payment with updated display
US11132723B2 (en) * 2009-09-04 2021-09-28 Ips Group Inc. Parking meter communications for remote payment with updated display
US11074612B2 (en) 2009-09-04 2021-07-27 Ips Group Inc. Location-aware advertising to vending machine users
US8800360B2 (en) * 2010-08-27 2014-08-12 Denso Corporation Vane pump apparatus and leak check system having the same
US20120047999A1 (en) * 2010-08-27 2012-03-01 Denso Corporation Vane pump apparatus and leak check system having the same
CN103261650A (zh) * 2010-12-15 2013-08-21 大陆汽车有限责任公司 具有改进的油箱清洁装置的内燃机
WO2012080177A1 (de) * 2010-12-15 2012-06-21 Continental Automotive Gmbh Brennkraftmaschine mit verbesserter tankreinigung
US11699321B2 (en) 2011-03-03 2023-07-11 J.J Mackay Canada Limited Parking meter with contactless payment
US10192388B2 (en) 2011-03-03 2019-01-29 J.J. Mackay Canada Limited Single space parking meter and removable single space parking meter mechanism
US12430978B2 (en) 2011-03-03 2025-09-30 J.J. Mackay Canada Limited Parking meter with contactless payment
US10424147B2 (en) 2011-03-03 2019-09-24 J.J. Mackay Canada Limited Parking meter with contactless payment
US12008856B2 (en) 2011-03-03 2024-06-11 J.J. Mackay Canada Limited Single space parking meter and removable single space parking meter mechanism
US10861278B2 (en) 2011-03-03 2020-12-08 J.J. Mackay Canada Limited Parking meter with contactless payment
US8955369B2 (en) 2011-10-19 2015-02-17 Denso Corporation Fuel vapor leak detecting device and fuel vapor leak detecting method using the same
US9046060B2 (en) 2012-02-17 2015-06-02 Denso Corporation Fuel vapor leakage sensing apparatus and fuel vapor leakage sensing method using the same
US9097216B2 (en) * 2012-07-25 2015-08-04 Denso Corporation Fuel vapor purge device
US20140026867A1 (en) * 2012-07-25 2014-01-30 Denso Corporation Fuel vapor purge device
US9303600B2 (en) * 2012-10-11 2016-04-05 Denso Corporation Fuel vapor leakage detection method
US20140102421A1 (en) * 2012-10-11 2014-04-17 Denso Corporation Fuel vapor leakage detection method
US9038489B2 (en) 2012-10-15 2015-05-26 GM Global Technology Operations LLC System and method for controlling a vacuum pump that is used to check for leaks in an evaporative emissions system
CN103726955A (zh) * 2012-10-15 2014-04-16 通用汽车环球科技运作有限责任公司 控制检查蒸发排放物系统的泄漏用的真空泵的系统和方法
DE102013220186B4 (de) * 2012-10-15 2016-12-22 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Verfahren zum Steuern einer Unterdruckpumpe, die zur Prüfung von Undichtigkeiten in einem Kraftstoffdampf-Rückhaltesystem verwendet ist
US9176022B2 (en) 2013-03-15 2015-11-03 GM Global Technology Operations LLC System and method for diagnosing flow through a purge valve based on a fuel system pressure sensor
US9316558B2 (en) 2013-06-04 2016-04-19 GM Global Technology Operations LLC System and method to diagnose fuel system pressure sensor
US20150090235A1 (en) * 2013-10-01 2015-04-02 Ford Global Technologies, Llc Cpv-controlled evap leak detection system
US12417669B2 (en) 2015-08-08 2025-09-16 J.J. Mackay Canada Limited Lighweight vandal resistent parking meter
US11978300B2 (en) 2015-08-11 2024-05-07 J.J. Mackay Canada Limited Single space parking meter
US11972654B2 (en) 2015-08-11 2024-04-30 J.J. Mackay Canada Limited Lightweight vandal resistant parking meter
USD863075S1 (en) 2015-10-16 2019-10-15 J.J. Mackay Canada Limited Parking meter
USD863076S1 (en) 2015-10-16 2019-10-15 J. J. Mackay Canada Limited Parking meter
USD863987S1 (en) 2015-10-16 2019-10-22 J.J. Mackay Canada Limited Parking meter
USD863074S1 (en) 2015-10-16 2019-10-15 J. J. Mackay Canada Limited Parking meter
USD863988S1 (en) 2015-10-16 2019-10-22 J.J. Mackay Canada Limited Parking meter
US10674236B2 (en) 2016-02-29 2020-06-02 Ips Group, Inc. Pole-mounted vehicle sensor
US10299018B1 (en) 2016-02-29 2019-05-21 Ips Group Inc. Pole-mounted vehicle sensor
US11683617B2 (en) 2016-02-29 2023-06-20 Ips Group Inc. Retrofit vehicle sensor
US10491972B2 (en) 2016-02-29 2019-11-26 Ips Group Inc. Pole-mounted vehicle sensor
US11991491B2 (en) 2016-02-29 2024-05-21 Ips Group Inc. Vehicle sensor
US11172274B2 (en) 2016-02-29 2021-11-09 Ips Group Inc. Retrofit vehicle sensor
CN113697309A (zh) * 2017-12-08 2021-11-26 三友机器株式会社 筒仓
US10584663B1 (en) 2018-10-22 2020-03-10 Denso International America, Inc. Evaporative fuel leak check system
US11762479B2 (en) 2019-01-30 2023-09-19 J.J. Mackay Canada Limited SPI keyboard module for a parking meter and a parking meter having an SPI keyboard module
US11922756B2 (en) 2019-01-30 2024-03-05 J.J. Mackay Canada Limited Parking meter having touchscreen display
USD911857S1 (en) 2019-02-20 2021-03-02 Ips Group Inc. Sensor enhanced parking meter
USD1011933S1 (en) 2020-10-01 2024-01-23 Ips Group Inc. Pole-mounted sensor
USD986084S1 (en) 2020-10-01 2023-05-16 Ips Group Inc. Pole-mounted sensor
USD986082S1 (en) 2020-11-19 2023-05-16 Ips Group Inc. Sensor enhanced meter
USD959298S1 (en) 2020-11-19 2022-08-02 Ips Group Inc. Meter cover
USD959299S1 (en) 2020-11-19 2022-08-02 Ips Group Inc. Meter cover
USD996237S1 (en) 2020-11-19 2023-08-22 Ips Group Inc. Sensor enhanced meter
USD959997S1 (en) 2020-11-19 2022-08-09 Ips Group Inc. Meter cover

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