EP1555423A2 - Procédé pour ajuster le débit d'une pompe à carburant admettant le carburant d'un réservoir à carburant et pompe à carburant pour un tel procédé - Google Patents

Procédé pour ajuster le débit d'une pompe à carburant admettant le carburant d'un réservoir à carburant et pompe à carburant pour un tel procédé Download PDF

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Publication number
EP1555423A2
EP1555423A2 EP04106661A EP04106661A EP1555423A2 EP 1555423 A2 EP1555423 A2 EP 1555423A2 EP 04106661 A EP04106661 A EP 04106661A EP 04106661 A EP04106661 A EP 04106661A EP 1555423 A2 EP1555423 A2 EP 1555423A2
Authority
EP
European Patent Office
Prior art keywords
fuel
pump unit
fuel pump
pump
stage
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.)
Withdrawn
Application number
EP04106661A
Other languages
German (de)
English (en)
Other versions
EP1555423A3 (fr
Inventor
Gunter Wagner
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.)
Aumovio Germany GmbH
Original Assignee
Siemens AG
Continental Automotive Technologies GmbH
Siemens 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 Siemens AG, Continental Automotive Technologies GmbH, Siemens Corp filed Critical Siemens AG
Publication of EP1555423A2 publication Critical patent/EP1555423A2/fr
Publication of EP1555423A3 publication Critical patent/EP1555423A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • F02M37/18—Feeding by means of driven pumps characterised by provision of main and auxiliary pumps

Definitions

  • the invention relates to a method for adjustment the flow rate of fuel from a fuel tank aspirating fuel pump unit in response to the constructed by the fuel pump unit discharge pressure in a leading to an internal combustion engine outlet of Fuel pump unit and on a fuel pump unit for this procedure.
  • a control takes place the fuel pump as a function of operating parameters the internal combustion engine by appropriate speed adjustment the fuel pump. It will be the fuel pump built-up pressure by a pressure limiting element limited to a certain predetermined pressure. To do this as operating parameters by means of sensors the speed of the Fuel pump, the temperature and the suction pressure at the Throttle of the internal combustion engine and data on a Fuel composition detected and in an evaluation evaluated. This generates a clocked accordingly Control voltage for controlling the fuel pump.
  • the object of the invention is therefore a method for adjustment the flow rate of fuel from a fuel tank sucking fuel pump unit and a fuel pump unit for this procedure to be created in simple way and with little effort a setting of Fuel delivery amount according to the respective fuel requirement enable the internal combustion engine.
  • the fuel pump unit comprises a first pump stage and having a second pump stage, wherein below a certain Delivery pressure in the outlet of the fuel pump unit the two pump stages parallel and above the determined Delivery pressure to be switched serially.
  • the object is thereby solved that the first pump stage one with a Fuel tank connected suction port has and one Pressure port and that the second pump stage a Suction port and one to the outlet of the fuel pump unit leading pressure port has, as well as with a Two-way valve, through which in a first switching position of Pressure connection of the first pump stage with the outlet of the Fuel pump unit and the suction port of the second Pump stage is connected to the fuel tank and where through the two-way valve in its second switching position of Pressure connection of the first pump stage to the suction connection the second pump stage is connected.
  • This training does not require any sensors and electronic Evaluation unit for controlling the fuel pump, but regulates exclusively via mechanical components Fuel delivery. This is this fuel pump unit not only inexpensive, but also has a very low susceptibility to interference.
  • the necessary volume flow for idle gas and for the middle Part load range of the internal combustion engine is characterized by the realized serial circuit of the two pump stages. Thereby, that the second pump stage then generates no pressure, reduces the necessary torque on the engine and thereby also the electric current consumption.
  • the two pump stages are connected in parallel.
  • the two-way valve can be a solenoid valve, depending on from the discharge pressure in the outlet of the fuel pump unit is controllable.
  • the delivery pressure in the outlet of the fuel pump unit detectable by a pressure sensor and a corresponding Activation signal can be generated, through which the solenoid valve can be acted upon and in its first shift position or second Switch position is adjustable.
  • a simple structure is achieved in that the Control slide cylindrical and each in one corresponding slide bore in a housing part of Fuel pump unit are arranged displaceably and a radial circumferential cam groove on its cylindrical surface possess, wherein in the first switching position of Pressure connection of the first pump stage via the second control groove of the second spool with the outlet of the fuel pump unit and a first suction port of the second Pump stage via the first control groove of the first spool with the leading to the fuel tank suction port is connected, and wherein in the second switching position of Pressure connection of the first pump stage via the second control groove with a second suction port of the second pump stage connected and the first suction port of the second pump stage from the first spool to the fuel tank leading suction connection is shut off.
  • the flow pump is preferably a side channel pump or a Peripheralradpumpe is.
  • the illustrated fuel pump unit has a tube-like Pump housing 1, in which a rotor 2 of an electric Drive motor 3 rotatably supported by a drive shaft 4 is.
  • the rotor 2 is surrounded by a stator 5.
  • the pump housing 1 of a End plate 6 is closed, which has a suction connection 7 has, which is connected to a fuel tank 8.
  • the End plate 6 forms with its interior facing the housing Surface a side wall of a pump chamber 11 a a first pump stage forming the first side channel pump.
  • the cup-shaped depression in a partition wall 9 is formed and axially on the other Side through the bottom of the cup-shaped recess of the partition 9 is limited, is a pump 10 of the first side channel pump arranged on the rotationally fixed in the pump chamber 11 projecting drive shaft 4 is seated.
  • the suction port 7 leads both to the pump chamber 11 of first pump stage as well as to one formed in the partition wall 9 first slide bore 12 of a two-way valve 13.
  • first slide bore 12 In this slide bore 12 is a first spool 14 slidably disposed on its radially outer End face against the force of a first control spring 15th displaceable from an open position to a closed position is pressurizable.
  • the second spool 19 also to one its cylindrical circumferential surface formed radially circumferentially second control groove 21, on the in the open position a pressure port 22 of the first pump stage with a Connecting channel 23 is connected to the the drive motor 3 containing engine compartment 24 of the pump housing 1 leads, from which an outlet 25 leads to the outside and with an internal combustion engine is connectable.
  • the engine compartment 24 is connected via connecting lines 26 and 27 with the first slide bore 12 and the second slide bore 18 for pressurizing the first spool 14 and the second spool 19 permanently connected, so that the spool 14 and 19 always from the ruling in the engine compartment Pressure are applied.
  • first position of the second spool 19 is the pressure port 22 of the first pump stage with connected to the engine compartment 24, while in the second position of the second spool 19, the pressure port 22 of the first pump stage with a second suction port 28 of the second pump stage is connected.
  • the second pump stage also consists of a side channel pump arranged with a in a pump chamber 29 second impeller 30, which also rotatably on the second pump chamber 29 protruding drive shaft 4 is arranged is.
  • the second pump chamber 29 is a cup-shaped depression in one of the engine compartment 24 delimiting the pump stages second partition wall 31 is formed, wherein the bottom of the cup-shaped Deepening the second pump chamber 29 axially after the one side and the partition 9 axially to the other side limited. From the second pump chamber 29 performs a pressure connection 32 in the engine compartment 24th
  • the pressure port 22 of the first pump stage is direct with the engine compartment 24 and the first suction port 17 of the second Pump stage with the suction port 7 of the fuel pump unit connected.
  • the two pump stages are connected in parallel and promote both in a rotary drive by the drive motor. 3 a maximum flow in the engine compartment 24. This is from the fuel, the drive motor 3 at the same time cooling flows through and through the outlet 25 to the engine promoted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)
EP04106661A 2004-01-16 2004-12-17 Procédé pour ajuster le débit d'une pompe à carburant admettant le carburant d'un réservoir à carburant et pompe à carburant pour un tel procédé Withdrawn EP1555423A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004002459A DE102004002459A1 (de) 2004-01-16 2004-01-16 Verfahren zur Einstellung der Fördermenge einer aus einem Kraftstofftank Kraftstoff ansaugenden Kraftstoffpumpeneinheit und Kraftstoffpumpeneinheit für das Verfahren
DE102004002459 2004-01-16

Publications (2)

Publication Number Publication Date
EP1555423A2 true EP1555423A2 (fr) 2005-07-20
EP1555423A3 EP1555423A3 (fr) 2011-02-23

Family

ID=34609596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04106661A Withdrawn EP1555423A3 (fr) 2004-01-16 2004-12-17 Procédé pour ajuster le débit d'une pompe à carburant admettant le carburant d'un réservoir à carburant et pompe à carburant pour un tel procédé

Country Status (3)

Country Link
US (1) US7231910B2 (fr)
EP (1) EP1555423A3 (fr)
DE (1) DE102004002459A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100366888C (zh) * 2006-03-19 2008-02-06 曹宝军 一种适用含醇燃料的电动燃油泵
DE102010021343A1 (de) 2009-09-04 2011-03-10 Volkswagen Ag Verfahren und Vorrichtung zum Bereitstellen von Informationen in einem Fahrzeug
DE102020206493A1 (de) * 2020-05-25 2021-11-25 Hyundai Motor Company Kraftstoffpumpe für ein Flüssigkraftstoff-Einspritzsystem eines Kraftfahrzeugs
US11274641B1 (en) * 2021-02-02 2022-03-15 Caterpillar Inc. Priming pump

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1124054A2 (fr) 2000-02-09 2001-08-16 Bayerische Motoren Werke Aktiengesellschaft Système d'alimentation en carburant pour un moteur à combustion

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4718827A (en) * 1986-07-07 1988-01-12 General Motors Corporation Fuel pump
US4789308A (en) * 1986-10-10 1988-12-06 Walbro Corporation Self-contained electric fuel pump with output pressure regulation
DE4304334A1 (de) * 1993-02-13 1994-08-18 Bosch Gmbh Robert Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeugs
JPH08210209A (ja) * 1995-02-06 1996-08-20 Zexel Corp 高圧燃料噴射装置
NL1010144C2 (nl) * 1998-09-21 2000-03-22 Doornes Transmissie Bv Continu variabele transmissie.
DE19902427C1 (de) * 1999-01-22 2000-08-24 Mannesmann Vdo Ag Kraftstofffördereinheit
US6280157B1 (en) * 1999-06-29 2001-08-28 Flowserve Management Company Sealless integral-motor pump with regenerative impeller disk
JP2002339823A (ja) * 2001-05-16 2002-11-27 Nikki Co Ltd エンジンの燃料供給方法および燃料供給装置
US6758656B2 (en) * 2001-05-17 2004-07-06 Delphi Technologies, Inc. Multi-stage internal gear/turbine fuel pump
JP2004316518A (ja) * 2003-04-15 2004-11-11 Denso Corp 高圧燃料供給装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1124054A2 (fr) 2000-02-09 2001-08-16 Bayerische Motoren Werke Aktiengesellschaft Système d'alimentation en carburant pour un moteur à combustion

Also Published As

Publication number Publication date
US20050158180A1 (en) 2005-07-21
DE102004002459A1 (de) 2005-08-11
US7231910B2 (en) 2007-06-19
EP1555423A3 (fr) 2011-02-23

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