EP1283956B1 - Kraftstoffeinspritzsystem für brennkraftmaschinen - Google Patents

Kraftstoffeinspritzsystem für brennkraftmaschinen Download PDF

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Publication number
EP1283956B1
EP1283956B1 EP01943031A EP01943031A EP1283956B1 EP 1283956 B1 EP1283956 B1 EP 1283956B1 EP 01943031 A EP01943031 A EP 01943031A EP 01943031 A EP01943031 A EP 01943031A EP 1283956 B1 EP1283956 B1 EP 1283956B1
Authority
EP
European Patent Office
Prior art keywords
fuel
valve
valve piston
pressure pump
regulating valve
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.)
Expired - Lifetime
Application number
EP01943031A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1283956A1 (de
Inventor
Martin Boehm
Rainer Haeberer
Helmut Clauss
Felix LANDHÄUSSER
Markus Rueckle
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1283956A1 publication Critical patent/EP1283956A1/de
Application granted granted Critical
Publication of EP1283956B1 publication Critical patent/EP1283956B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/34—Varying fuel delivery in quantity or timing by throttling of passages to pumping elements or of overflow passages, e.g. throttling by means of a pressure-controlled sliding valve having liquid stop or abutment
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails

Definitions

  • the invention relates to a fuel injection system for internal combustion engines according to the preamble of claim 1.
  • Such a fuel injection system is known from JP 602 287 33.
  • This fuel injection system has a high-pressure pump driven by the engine speed and a fuel metering unit associated therewith, which is based on an electromagnetically actuated control valve and by means of which the fuel quantity delivered by the high-pressure pump is adjustable.
  • the high pressure pump may be adapted to generate a required fuel pressure and flow rate in a manifold.
  • the fuel metering unit is disposed in the high pressure pump.
  • the output of the control valve opens into the low-pressure region of the high-pressure pump and the input of the control valve is connected to the pressure side of a prefeed pump.
  • the control valve has a by a compression spring to a closed position acted upon valve piston which is actuated by an anchor bolt of the electromagnet to an open position against the spring force.
  • a plurality of radial control openings are arranged, which are in operative connection with the suction side of the high-pressure pump.
  • the fuel injection system according to the invention with the features according to claim 1 has the advantage that targeted by the at least one specially shaped control opening in cooperation with the annular channel a certain throughput characteristic can be realized.
  • 10 denotes an electromagnet with integrated control valve 11.
  • the solenoid 10 has a magnetic coil 12, an armature 13 with anchor bolt 14 and a magnet pot 15 on. The latter encloses - in part - the magnetic coil 12 and the armature 13th
  • a plug-shaped power terminal 101 is provided in a connector housing 100 integrally connected to the magnet pot 15, a plug-shaped power terminal 101 is provided.
  • the assembly of solenoid 10 with integrated control valve 11 is integrated in a high-pressure fuel pump (not shown).
  • An encapsulation 17 ensures optimum heat transfer from the coil 12 to the housing 15.
  • Two sealing points 18, 19, together with the magnet coil 12, ensure that the magnet coil winding and contact points of the coil 12 are optimally protected against attack by corrosive media.
  • the control valve 11 has a valve housing 20, which merges into a flange-like widening 21, which also forms the end-side termination of the Eleketromagnetgepuruses 15.
  • a valve housing 20 which merges into a flange-like widening 21, which also forms the end-side termination of the Eleketromagnetgepuruses 15.
  • an axial bore 22 is formed, which is arranged coaxially with the anchor bolt 14 of the electromagnet 10.
  • the axial bore 22 receives a displaceable sleeve-shaped valve piston 23, in whose interior 24 a compression spring 25 is arranged.
  • the compression spring 25 is supported on the inside of the valve piston 23 and with its other end on a located in the axial bore 22 of the valve housing 20 securing element 26 from.
  • the valve piston 23 On the outside, the valve piston 23 is in contact with the front end of the anchor bolt 14.
  • the control valve 11 is sealed off from the fuel supply channel having a material of the (not shown) high-pressure pump by two sealing rings 27, 28.
  • the valve housing 20 has a plurality of radially arranged, preferably oppositely paired inlet openings 32, 33 which are in hydraulic operative connection with a (not shown) prefeed pump of the fuel injection system.
  • the inlet openings 32, 33 open into an annular channel 34 a.
  • radial control openings 35 are arranged, the channel 34 and the inlet openings 32, 33 cooperate with the ring by, depending on the position of the valve piston 23 (see., In each case in Fig. 1 and 2, respectively, two possible two piston positions indicated) - Release or close the inlet in the valve interior 22, 24.
  • the fuel which has reached the valve interior 22, 24 is discharged in the axial direction (arrow 31) through a stepped bore 36, which is hydraulically connected to the high-pressure pump inlet (low-pressure region of the high-pressure pump).
  • the bore 36 is incorporated in the already mentioned securing element 26, which forms the lower end of the valve housing 20.
  • Fig. 2 reveals the particular design of the control port 35, from which - in conjunction with the lifting movement of the valve piston 23 - the graph shown in FIG. 3 throughput characteristic results.
  • the control opening 35 preferably has an (upper) slot-shaped and a (lower) approximately rectangular area.
  • the upper end position (open position) of the valve piston 23 - see the right half of the figure in FIG. 2 (or in FIG. 1) - the widened rectangular area of the control opening 35 comes into play. This means maximum fuel flow rate through the valve 11.
  • This state is indicated in FIGS. 2 and 3 by an arrow 37 in each case.
  • control opening 35 As an alternative to the geometry of the control opening 35 shown in FIG. 2 and described above, however, different designs of the control opening 35 are still possible. For example, it is conceivable to make the control opening trapezoidal and thus allow others, e.g. to realize linear, throughput characteristics. The apparent from Fig. 3 throughput characteristic, however, is characterized by a stepped course.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)
EP01943031A 2000-05-13 2001-05-08 Kraftstoffeinspritzsystem für brennkraftmaschinen Expired - Lifetime EP1283956B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10023621 2000-05-13
DE10023621A DE10023621A1 (de) 2000-05-13 2000-05-13 Kraftstoffeinspritzsystem für Brennkraftmaschinen
PCT/DE2001/001732 WO2001088368A1 (de) 2000-05-13 2001-05-08 Kraftstoffeinspritzsystem für brennkraftmaschinen

Publications (2)

Publication Number Publication Date
EP1283956A1 EP1283956A1 (de) 2003-02-19
EP1283956B1 true EP1283956B1 (de) 2006-01-11

Family

ID=7642021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01943031A Expired - Lifetime EP1283956B1 (de) 2000-05-13 2001-05-08 Kraftstoffeinspritzsystem für brennkraftmaschinen

Country Status (9)

Country Link
US (1) US6626151B2 (pt)
EP (1) EP1283956B1 (pt)
JP (1) JP4638649B2 (pt)
KR (1) KR100757225B1 (pt)
CN (1) CN1262756C (pt)
BR (1) BR0106435B1 (pt)
DE (2) DE10023621A1 (pt)
ES (1) ES2255559T3 (pt)
WO (1) WO2001088368A1 (pt)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005299683A (ja) 2001-11-27 2005-10-27 Bosch Corp 液体の流量制御弁および可動子のためのアンカー
CN100354561C (zh) * 2001-12-11 2007-12-12 萱场工业株式会社 电磁比例流量控制阀
DE10242219A1 (de) * 2002-09-12 2004-03-25 Robert Bosch Gmbh Kraftstoffzumesseinheit für eine Kraftstoffeinspritzanlage
DE10247774B4 (de) 2002-10-14 2005-09-29 Siemens Ag Volumenstromregelventil
DE10251014A1 (de) * 2002-11-02 2004-05-19 Robert Bosch Gmbh Kraftstoffzumesseinheit für Kraftstoffeinspritzanlagen von Brennkraftmaschinen
JP4045957B2 (ja) * 2003-01-16 2008-02-13 いすゞ自動車株式会社 燃料噴射量制御装置
DE10305947A1 (de) 2003-02-12 2004-08-26 Robert Bosch Gmbh Expansionsorgan für eine Klimaanlage
DE10343480A1 (de) * 2003-09-19 2005-04-14 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
US7387109B2 (en) * 2003-10-21 2008-06-17 Robert Bosch Gmbh High-pressure fuel pump for an internal combustion engine
DE102005012940A1 (de) * 2005-03-21 2006-09-28 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
CN103075285A (zh) * 2013-02-05 2013-05-01 李正富 高压共轨燃油计量阀
CN103147891A (zh) * 2013-04-04 2013-06-12 无锡正大轴承机械制造有限公司 比例电磁阀用阀壳与活塞组合机构
DE102013212121A1 (de) * 2013-06-25 2015-01-08 Robert Bosch Gmbh Kraftstoffzumesseinheit für ein Hochdruckeinspritzsystem
US9488176B2 (en) 2014-04-07 2016-11-08 National Oilwell Varco, L.P. Radial valves and pumps including radial valves
DE102014220222A1 (de) * 2014-10-07 2016-04-07 Robert Bosch Gmbh Elektromagnetisch betätigbares Proportionalventil
DE102014220226A1 (de) * 2014-10-07 2016-04-07 Robert Bosch Gmbh Elektromagnetisch betätigbares Proportionalventil sowie Kraftstoffhochdruckpumpe mit einem solchen Proportionalventil
CN104455655B (zh) * 2014-11-25 2017-01-04 北京亚新科天纬油泵油嘴股份有限公司 一种比例电磁阀阀芯及应用该阀芯的比例电磁阀
CN104895718A (zh) * 2015-05-21 2015-09-09 山东菏泽华星油泵油嘴有限公司 新式电控单体泵内部缓冲结构
WO2019065998A1 (ja) * 2017-09-29 2019-04-04 株式会社デンソー 高圧ポンプ
JP6708238B2 (ja) * 2017-09-29 2020-06-10 株式会社デンソー 高圧ポンプ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB752261A (en) * 1953-03-05 1956-07-11 Daimler Benz Ag Improvements relating to fuel-injection piston pumps
DE19807037A1 (de) * 1997-02-19 1998-08-20 Caterpillar Inc Einspritzratenformungsvorrichtung für ein füllzugemessenes, hydraulisch betätigtes Brennstoffeinspritzsystem

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168688A (en) * 1973-10-03 1979-09-25 Eaton Corporation Metering valve for fuel injection
CA1047863A (en) * 1973-10-03 1979-02-06 Hansueli Bart Metering valve for fuel injection
JPS60228733A (ja) * 1984-04-25 1985-11-14 Hitachi Ltd 速動式電磁計量弁
US5099814A (en) * 1989-11-20 1992-03-31 General Motors Corporation Fuel distributing and injector pump with electronic control
DE4142998C1 (pt) * 1991-12-24 1993-07-22 Robert Bosch Gmbh, 7000 Stuttgart, De
JP3144136B2 (ja) * 1993-03-31 2001-03-12 株式会社デンソー 三方電磁弁
FR2741672A1 (fr) * 1995-11-29 1997-05-30 Lucas Ind Plc Systeme d'alimentation de carburant
DE19549108A1 (de) 1995-12-29 1997-07-03 Bosch Gmbh Robert System zur Kraftstoffhochdruckerzeugung für ein in Brennkraftmaschinen eingesetztes Kraftstoffeinspritzsystem
DE19645308A1 (de) * 1996-11-04 1998-05-07 Bosch Gmbh Robert Elektrisch gesteuertes Ventil
IT1319838B1 (it) * 2000-02-15 2003-11-03 Elasis Sistema Ricerca Fiat Perfezionamenti di un'elettrovalvola per la regolazione dellapressione di alimentazione di combustibile ad un motore a combustione

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB752261A (en) * 1953-03-05 1956-07-11 Daimler Benz Ag Improvements relating to fuel-injection piston pumps
DE19807037A1 (de) * 1997-02-19 1998-08-20 Caterpillar Inc Einspritzratenformungsvorrichtung für ein füllzugemessenes, hydraulisch betätigtes Brennstoffeinspritzsystem

Also Published As

Publication number Publication date
ES2255559T3 (es) 2006-07-01
KR20020032527A (ko) 2002-05-03
US6626151B2 (en) 2003-09-30
DE50108673D1 (de) 2006-04-06
BR0106435B1 (pt) 2009-08-11
BR0106435A (pt) 2002-04-16
DE10023621A1 (de) 2001-11-15
JP4638649B2 (ja) 2011-02-23
KR100757225B1 (ko) 2007-09-11
US20020134355A1 (en) 2002-09-26
CN1380941A (zh) 2002-11-20
EP1283956A1 (de) 2003-02-19
WO2001088368A1 (de) 2001-11-22
CN1262756C (zh) 2006-07-05
JP2003533638A (ja) 2003-11-11

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