EP1306545A2 - Soupape électromagnétique de commande d'une soupape d'injection - Google Patents

Soupape électromagnétique de commande d'une soupape d'injection Download PDF

Info

Publication number
EP1306545A2
EP1306545A2 EP02022596A EP02022596A EP1306545A2 EP 1306545 A2 EP1306545 A2 EP 1306545A2 EP 02022596 A EP02022596 A EP 02022596A EP 02022596 A EP02022596 A EP 02022596A EP 1306545 A2 EP1306545 A2 EP 1306545A2
Authority
EP
European Patent Office
Prior art keywords
bore
section
valve
solenoid valve
sections
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Withdrawn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
EP02022596A
Other languages
German (de)
English (en)
Other versions
EP1306545A3 (fr
Inventor
Uwe Finke
Tibor Bauer
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 EP1306545A2 publication Critical patent/EP1306545A2/fr
Publication of EP1306545A3 publication Critical patent/EP1306545A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/04—Fuel-injection apparatus having means for avoiding effect of cavitation, e.g. erosion
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/28—Details of throttles in fuel-injection apparatus
    • 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
    • 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
    • F02M63/0043—Two-way valves

Definitions

  • the invention relates to a solenoid valve for Control of an injection valve according to the preamble of Main claim.
  • Such solenoid valves are used for Control of an injector Fuel injection device with a valve needle, the Opening and closing position by the solenoid valve are controllable.
  • the solenoid valve has a valve ball, which at Current supply to the solenoid group of the solenoid valve takes off and opens a valve seat.
  • This valve seat is above a Bore in fluid communication with the control pressure chamber of the Injector.
  • Opening the valve seat builds the pressure in the pressure chamber of the injection valve decreases, whereby Fluid (pressure medium) through the bore towards the valve seat and flows further into a relief room. As a result it to open the valve needle or open the injector.
  • the common rail injector works according to this known method of operation (CRI), one main and one Pre-injection realized with very short injection times can be.
  • CRI common rail injector
  • Such a solenoid valve is known for example from DE 196 50 865 A1.
  • the solenoid valve according to the invention has the main claim a bore that is at least partially one or more in the direction of the valve seat continuously in cross section includes widening sections. This will sharp-edged transitions within the bore, in particular in the transition area from the A throttle to the diffuser bore, avoided.
  • a conical geometry of the itself is favorable spreading section.
  • Valve seat preceding bore several, in particular conically widening towards the valve seat Sections on.
  • the conical adjoining the cylindrical bores Sections prevent one, as already mentioned Stall and thus the cause of the formation of Cavitation bubbles.
  • the opening angle of the valve seat take successive conical sections suitably too, so that a gradual transition to the opening angle of the valve seat can take place. This causes an extremely favorable flow pattern.
  • the continuously widening in cross section Sections can be done in a simple mechanical way generated that the transition between the holes, like A throttle and diffuser bore, is rounded in each case. This makes the existing sharp edge of a Transition already processed in the production so that an optimal flow channel can be created.
  • FIG. 1 is the previous version of a valve piece 1 of a solenoid valve for controlling an injection valve shown.
  • the bore 2 leads to the control pressure chamber of the Injector and stands over another throttle bore with the valve seat 4 of the relief chamber 3 of the Solenoid valve in fluid connection.
  • the throttle bore is from the so-called A-choke 6 and the following Diffuser bore 5 formed, at the transition point an abrupt one between the cylindrical bores Cross-sectional change occurs.
  • valve ball When the solenoid valve is energized, one does not lift shown valve ball in the relief chamber 3 from Valve seat 4, which causes the pressure in the valve chamber Towards the valve ball by using a pressure medium, mostly fuel under high pressure, from hole 2 over the throttle bore flows into the relief chamber 3. The this causes pressure drop in the bore 2 itself upstream control pressure chamber leads to that the valve needle of the injection valve opens and Fuel is injected under high pressure.
  • a pressure medium mostly fuel under high pressure
  • FIG. 2 shows an embodiment of the invention Solenoid valve in the area of the valve seat 4. Same parts from Figure 1 are in Figure 2 with the same reference numerals Mistake.
  • a section 7 is involved continuously expanding cross section in the Throttle bore between the one leading to the control pressure chamber Bore 2 and the relief chamber 3 are provided.
  • the exemplary embodiment is section 7 by a method for rounding the hole transition between A throttle 6 and diffuser bore 5 made.
  • both the A throttle 6 and the diffuser bore 5 in comparison significantly shortened to the known embodiment according to FIG. 1.
  • FIG. 3 Another embodiment of the invention 3 shows the solenoid valve in the area of the valve seat 4.
  • this embodiment follows the Control pressure chamber of injector leading bore 2 again the so-called A-choke 6 as cylindrical Bore with a significantly reduced cross section.
  • a first conical section 9 follows according to the invention Opening angle ⁇ .
  • the diffuser bore 10 is also in this embodiment of a conically widening cross section Section 11 followed, which opens into valve seat 4.
  • the conical section 11 has an opening angle ⁇ .
  • the opening angle ⁇ is too 50 °, the angle ⁇ selected to 60 °. Overall this will the opening angle of the flow channel successively expanded to then pass into the valve seat. By this measure can make the flow course extremely favorable to be influenced.
  • the combination with the strong shortened diffuser bore 10 avoids too strong Pressure increases, the cavitation bubbles that may be present could implode.
  • the complete contour of the Flow channel of the bore 8 is schematic in Fig. 3 shown and designated by reference numeral 12.
  • the present invention is in any Bore cross-sections can be used, of course also more than two widening in cross section Sections within the bore 8 may be appropriate. In practice it has been shown that the one shown in FIG Is sufficient to prevent the occurrence of To prevent cavitation damage and thus the Functional reliability, in particular of common rail injectors to increase.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Lift Valve (AREA)
  • Details Of Valves (AREA)
  • Magnetically Actuated Valves (AREA)
EP02022596A 2001-10-23 2002-10-09 Soupape électromagnétique de commande d'une soupape d'injection Withdrawn EP1306545A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10152173A DE10152173A1 (de) 2001-10-23 2001-10-23 Magnetventil zur Steuerung eines Einspritzventils
DE10152173 2001-10-23

Publications (2)

Publication Number Publication Date
EP1306545A2 true EP1306545A2 (fr) 2003-05-02
EP1306545A3 EP1306545A3 (fr) 2005-04-06

Family

ID=7703365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02022596A Withdrawn EP1306545A3 (fr) 2001-10-23 2002-10-09 Soupape électromagnétique de commande d'une soupape d'injection

Country Status (4)

Country Link
US (1) US6834845B2 (fr)
EP (1) EP1306545A3 (fr)
JP (1) JP2003139018A (fr)
DE (1) DE10152173A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2292918A1 (fr) * 2009-07-23 2011-03-09 C.R.F. Società Consortile per Azioni Injecteur de carburant doté d'une servocommande de mesure pour moteur à combustion interne
WO2013016745A1 (fr) * 2011-07-29 2013-02-07 Robert Bosch Gmbh Orifices d'étranglement optimisés en termes de cavitation

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7832661B2 (en) * 2003-09-29 2010-11-16 Continental Automotive Systems Us, Inc. Injector seat that includes a coined seal band with radius
WO2005033501A1 (fr) * 2003-09-29 2005-04-14 Siemens Vdo Automotive Corporation Siege d'injecteur avec cordon de joint estampe
DE10355030A1 (de) * 2003-11-25 2005-06-23 Robert Bosch Gmbh Ventil, insbesondere für eine Hochdruckpumpe einer Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
JP4570149B2 (ja) * 2005-04-05 2010-10-27 株式会社デンソー 気体密度比検出装置、濃度検出装置及び燃料蒸気処理装置
US20090255822A1 (en) * 2006-06-21 2009-10-15 Kazutaka Fujii Electrical discharge surface treatment method and dressing method
DE102007004553A1 (de) * 2007-01-30 2008-07-31 Robert Bosch Gmbh Kugelsitzventil mit verringertem Erosionsverhalten
US8333336B2 (en) * 2007-03-06 2012-12-18 Caterpillar Inc. Cavitation erosion reduction strategy for valve member and fuel injector utilizing same
DE102008044096A1 (de) * 2008-11-27 2010-06-02 Robert Bosch Gmbh Verfahren zur Herstellung von Drosselbohrungen mit niedrigem Kaviationsumschlagpunkt
DE102009045894A1 (de) 2009-10-21 2011-04-28 Robert Bosch Gmbh Kraftstoffeinspritzsystem mit einem Ventil
JP5051279B2 (ja) * 2009-12-21 2012-10-17 株式会社デンソー 定残圧弁
DE102010028844A1 (de) 2010-05-11 2011-11-17 Robert Bosch Gmbh Schaltventil
JP5198511B2 (ja) * 2010-06-29 2013-05-15 株式会社デンソー 定残圧弁
US9079281B2 (en) * 2012-03-29 2015-07-14 North American Fuel Systems Remanufacturing, LLC Common rail valve seat refurbishing
DE102013214589A1 (de) * 2013-07-25 2015-01-29 Robert Bosch Gmbh Schaltventil für einen Kraftstoffinjektor
DE102015204255A1 (de) 2015-03-10 2016-09-15 Robert Bosch Gmbh Kraftstoffinjektor für ein Kraftstoffeinspritzsystem
US10180106B2 (en) 2016-05-17 2019-01-15 Hamilton Sundstrand Corporation Solenoids for gas turbine engine bleed valves
CN107461271B (zh) * 2017-09-12 2023-03-24 重庆潍柴发动机有限公司 气缸盖
RU197666U1 (ru) * 2020-01-27 2020-05-21 Общество с ограниченной ответственностью Управляющая компания "Алтайский завод прецизионных изделий" Топливная форсунка

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19650865A1 (de) 1996-12-07 1998-06-10 Bosch Gmbh Robert Magnetventil

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804557A (en) * 1972-05-26 1974-04-16 A Bentley Surface operated single tube pump
US4640304A (en) * 1985-03-22 1987-02-03 Baird Manufacturing Company Overflow vent valve
US4946107A (en) * 1988-11-29 1990-08-07 Pacer Industries, Inc. Electromagnetic fuel injection valve
DE19708104A1 (de) * 1997-02-28 1998-09-03 Bosch Gmbh Robert Magnetventil
DE19710353A1 (de) * 1997-03-13 1998-09-17 Bosch Gmbh Robert Magnetventil mit integriertem Rückschlagventil
DE19820341C2 (de) * 1998-05-07 2000-04-06 Daimler Chrysler Ag Betätigungsvorrichtung für eine Hochdruck-Einspritzdüse für flüssige Einspritzmedien
DE19827267A1 (de) * 1998-06-18 1999-12-23 Bosch Gmbh Robert Kraftstoff-Einspritzventil für Hochdruck-Einspritzung mit verbesserter Steuerung der Kraftstoffzufuhr
DE19859537A1 (de) * 1998-12-22 2000-07-06 Bosch Gmbh Robert Kraftstoffeinspritzventil
DE19936667A1 (de) * 1999-08-04 2001-02-22 Bosch Gmbh Robert Common-Rail-Injektor
DE19936943A1 (de) * 1999-08-05 2001-02-08 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10007175B9 (de) * 2000-02-17 2004-11-04 Siemens Ag Einspritzventil für die Einspritzung von Kraftstoff in eine Verbrennungskraftmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19650865A1 (de) 1996-12-07 1998-06-10 Bosch Gmbh Robert Magnetventil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2292918A1 (fr) * 2009-07-23 2011-03-09 C.R.F. Società Consortile per Azioni Injecteur de carburant doté d'une servocommande de mesure pour moteur à combustion interne
WO2013016745A1 (fr) * 2011-07-29 2013-02-07 Robert Bosch Gmbh Orifices d'étranglement optimisés en termes de cavitation

Also Published As

Publication number Publication date
EP1306545A3 (fr) 2005-04-06
US6834845B2 (en) 2004-12-28
JP2003139018A (ja) 2003-05-14
US20030087487A1 (en) 2003-05-08
DE10152173A1 (de) 2003-04-30

Similar Documents

Publication Publication Date Title
EP1306545A2 (fr) Soupape électromagnétique de commande d'une soupape d'injection
DE69636585T2 (de) Kraftstoffeinspritzdüse
DE3688753T2 (de) Steuereinrichtung für elektro-hydraulisch betätigte Kraftstoffeinspritzventile.
DE19612738C2 (de) Speichereinspritzsystem für Brennkraftmaschinen
DE4243665C2 (de) Kraftstoffeinspritzeinrichtung, insbesondere Pumpedüse für Brennkraftmaschinen
EP1123461B1 (fr) Injecteur de structure compacte pour systeme d'injection a rampe commune de moteur a combustion interne
DE10245151B4 (de) Kraftstoffeinspritzvorrichtung
EP0615064A1 (fr) Système de commande d'une soupape d'injection d'un moteur à combustion interne
WO2004092576A1 (fr) Injecteur de carburant pour moteur a combustion interne
EP3074623A1 (fr) Injecteur de carburant
DE19727074B4 (de) Kraftstoffeinspritzventil für Zylindereinspritzung
DE19726099A1 (de) Kraftstoffeinspritzdüse
DE102005000639A1 (de) Druckmodulierte Common-Rail-Einspritzvorrichtung und Einspritzsystem
EP3446006A1 (fr) Soupape de fermeture et d'ouverture d'un système de conduites
EP1599670B1 (fr) Buse d'injection a trou borgne et a siege perfore destinee a un moteur a combustion interne et presentant un cone de transition entre le trou borgne et le siege d'aiguille de buse
DE19843912B4 (de) Kraftstoffeinspritzdüse
EP1574701A1 (fr) Injecteur de common rail
DE10319535A1 (de) Durchflussratensteuerungsmodul, Kraftstoffeinspritzvorrichtung mit derselben und Herstellungsverfahren des Durchflussratensteuerungsmoduls
DE68913416T2 (de) Hochdruck-Brennstoffeinspritzgerät für Motoren.
EP4077908B1 (fr) Buse d'injection pour l'injection de carburant sous haute pression
DE102005023179B3 (de) Einspritzventil mit einem erhöhten Druck im Ablaufraum
DE102006000187A1 (de) Fluideinspritzventil
DE102019215119A1 (de) Kraftstoffinjektor
EP1176306A2 (fr) Système d'injection de combustible pour moteurs à combustion interne
DE10160490B4 (de) Kraftstoff-Einspritzvorrichtung, Kraftstoffsystem sowie Brennkraftmaschine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20051007