EP1043497A2 - Soupape de commande - Google Patents

Soupape de commande Download PDF

Info

Publication number
EP1043497A2
EP1043497A2 EP00107266A EP00107266A EP1043497A2 EP 1043497 A2 EP1043497 A2 EP 1043497A2 EP 00107266 A EP00107266 A EP 00107266A EP 00107266 A EP00107266 A EP 00107266A EP 1043497 A2 EP1043497 A2 EP 1043497A2
Authority
EP
European Patent Office
Prior art keywords
valve
flow channel
valve plate
mouth
plate
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.)
Granted
Application number
EP00107266A
Other languages
German (de)
English (en)
Other versions
EP1043497B1 (fr
EP1043497A3 (fr
Inventor
Tsutomu Fuseya
Mahoro Fujita
Hermann Breitbach
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.)
Isuzu Motors Ltd
Delphi Technologies Inc
Original Assignee
Isuzu Motors Ltd
Delphi Technologies Inc
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 Isuzu Motors Ltd, Delphi Technologies Inc filed Critical Isuzu Motors Ltd
Publication of EP1043497A2 publication Critical patent/EP1043497A2/fr
Publication of EP1043497A3 publication Critical patent/EP1043497A3/fr
Application granted granted Critical
Publication of EP1043497B1 publication Critical patent/EP1043497B1/fr
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
    • 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
    • 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
    • F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
    • F02M63/0036—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat with spherical or partly spherical shaped valve member ends
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00—Fluid sprinkling, spraying, and diffusing
    • Y10S239/90—Electromagnetically actuated fuel injector having ball and seat type valve

Definitions

  • the invention relates to a switching valve, in particular for actuating a Injection valve in an internal combustion engine, with a valve body, in which a flow channel is formed which has one end in opens a work space, and with one recorded in the work space Valve plate between a closed position and a Release position is movable.
  • the invention further relates to an injection valve such a switching valve.
  • Such a switching valve is known and is used in particular for actuation of valves, such as injection valves in internal combustion engines, used.
  • the shaft valve has one Flow channel on, one end of which with a pressure chamber of the actuating valve can be connected.
  • the other end of the flow channel opens into a work space provided on the switching valve, in which a valve plate for closing the flow channel is arranged.
  • the valve plate can be between a closed position and a release position can be moved back and forth.
  • the known switching valve is used in an injection valve in a diesel engine used to determine the injection timing and the injection duration of the to determine the fuel to be injected through the injection valve can.
  • To close the injector of the injector is one in a needle guide slidably mounted nozzle needle provided between the injector and the pressure chamber with which the flow channel of the switching valve is connected, hydraulically clamped is that the nozzle needle keeps the injector closed. By opening the flow channel, this relaxes in the pressure chamber fluid present, so that the nozzle needle releases the injection nozzle.
  • To the closing of the flow channel builds up inside the pressure chamber pressure again, through which the nozzle needle returns to its die Injector closing position is moved.
  • the mouth of the flow channel closed by the separate closing element which between the valve plate and the mouth of the flow channel is. If the valve plate is moved to the release position, that is because Closing element without pre-tension at the mouth of the flow channel on, so that the fluid past the closing element from or into the flow channel can flow.
  • the valve plate is returned to its closed position moves, she takes the closing element, which in turn turns on aligns the mouth of the flow channel and closes it as soon as the valve plate has reached its final closed position.
  • the closing element can move relative to the valve plate is an exact one Guiding and positioning of the valve plate relative to the mouth of the Flow channel no longer required, so that both the valve plate as well as the guide for the valve plate can be made less precisely must than with the known switching valves.
  • the Freedom of movement of the closing element relative to the mouth of the flow channel achieved that the closing element by the inflowing or flowing fluid is moved to a position in which it is even rests against the mouth and seals it properly as soon as it is pressed against the mouth by the valve plate and closes it.
  • valve ball As the closing element, due to their spherical shape in any position relative to the mouth of the flow channel at the mouth is linear.
  • the valve plate preferably has a Recess for the closing element on the mouth of the flow channel is aligned.
  • the recess and the mouth Form the recess and / or the mouth conically.
  • the depth of the The mouth is larger than the stroke of the valve plate. So that the closing element, for example a bullet held in the mouth. At the same time the closing element in the mouth can be parallel to the valve plate move so that it can center in the mouth.
  • the closing element evenly on the wall of the recess created and held in a defined position.
  • a conical recess and one with a conical is suitable Sealing surface provided mouth when using a valve ball as Closing element that is special due to its surface curvature well on the inclined walls of the recess and the mouth hugs.
  • Switch valves are on the inner surface facing the flow channel of the work space provided resilient elements on the valve plate are attached and guide them, so that a displacement of the valve plate is prevented transversely to their direction of movement.
  • the valve plate is preferably in its closed position by a compression spring held and with the help of an actuator in their release position moves, since it is ensured that the switching valve in the event of a failure of the Actuator remains closed.
  • the switching valve according to the invention is the working area by a one or multi-part valve body, a ring adjacent to the valve body and an adjacent ring Disc limited.
  • the geometry of the valve body is preferably such that the Valve plate in its closed position on the out of the through opening protruding closing element sealingly abuts when it muzzle closes the flow channel but does not lie against the valve body, so that there is a gap between the valve plate and the valve body remains. This ensures that the total closing force the valve plate is only transferred to the closing element, whereby a particularly good sealing effect can be achieved.
  • the fluid from the Gap between the valve plate and the valve body are promoted, which slightly slows the closing movement of the valve plate and any oscillating movements of the valve plate that occur after the impact on the closing element by springing back of the valve plate arise, be dampened.
  • the figure shows a switching valve 10 in a sectional side view.
  • the switching valve 10 is on a holding body 12 of an injection valve 14 arranged.
  • In the holding body 12 is a extending in the longitudinal direction Through hole 16 formed on the in the figure End face of the holding body 12 shown above ends.
  • a piston 18 is inserted along the through hole 16 can be moved back and forth and with one end (not shown) on the end face of a nozzle needle (not shown) with which the injection nozzle (not shown) of the injection valve 14 can be locked.
  • valve body 20 In the valve body 20 is an extending in the longitudinal direction Flow channel 24 formed, which with the high pressure chamber 22 in connection stands and in one on the injection valve 14 facing away from the end face of the valve body 20 shown above conical sealing surface 26 ends.
  • a collar 28 On the upper face of the valve body 20 is a collar 28 is formed, which protrudes in the radial direction and in the middle of which is arranged concentrically to the conical sealing surface 26 Through opening 30 is formed.
  • the injector 14 flat side of the collar 28 facing away is in turn on a ring 32, which is also arranged concentrically to the conical sealing surface 26.
  • the ring 32 is covered by a circular disk 34, the one has through opening 36 in its center.
  • At the injector 14 facing away from the flat side of the second disc 34 are one annular magnet coil 38 and a hollow cylindrical housing 40 provided, both of which are arranged concentrically around the opening 36.
  • the collar 28, the ring 32 and the disc 34 delimit a working space 42, in which a circular valve plate 44 is received the front of the valve body 20 facing one to the conical Sealing surface 26 aligned recess 46 is formed has a frustoconical cross-sectional shape. Furthermore are with connected to the rear of the valve plate 44 a plurality of resilient elements 48, which protrude downward from the disk 34 and the valve plate 44 hold concentric to the conical sealing surface 26 in a defined position. Between the recess 46 of the valve plate 44 and the conical Sealing surface 26 is arranged a valve ball 50 with which the flow channel 24 can be closed.
  • the valve plate 44 is driven by the force F of a compression spring (not shown) held in a closed position in which it is under tension the valve ball 50 abuts and against the conical sealing surface 26 presses so that the flow channel 24 is closed in a fluid-tight manner.
  • a compression spring (not shown) held in a closed position in which it is under tension the valve ball 50 abuts and against the conical sealing surface 26 presses so that the flow channel 24 is closed in a fluid-tight manner.
  • To the Opening the flow channel 24 can be that of a ferromagnetic Material manufactured valve plate 44 using the solenoid 38 against the Force of the compression spring and the resilient elements 48 into a release position in which the valve plate 44 and the valve ball 50 are lifted off the valve body 20.
  • the maximum stroke of the valve plate 44 by the height of the ring 32 in the direction of movement of the valve plate 44 is predetermined, is dimensioned so that the Valve ball 50 between the recess 46 and the conical sealing surface 26 can move freely, a jumping out of the valve ball 50 from the Recess 46 and the conical sealing surface 26 is prevented.
  • the solenoid 38 moves the ferromagnetic valve plate 44 against the force of the compression spring in their release position, whereby the valve ball 50 is released becomes. Due to the pressure acting in the high-pressure chamber 22, the valve ball 50 lifted off so that the flow channel 24 is no longer closed is and the fuel located in the high pressure chamber 22 through the flow channel 24 flows into the working space 42 from which it escapes into a leak fuel line via the opening 36 in the disk 34. Due to the falling pressure in the high pressure chamber 22, the the force exerted on the piston 18 on the nozzle needle is so small that the nozzle needle due to the fuel under high pressure at the injection nozzle is raised and the piston 18 in the direction of the switching valve 10 moves. At the same time, the nozzle needle opens the injection nozzle, see above that the fuel enters the cylinder of the engine.
  • valve plate 44 As soon as the injection control deactivates the magnet coil 38, the Valve plate 44 by the force of the compression spring and the resilient elements 48 moved back to its closed position, in which the valve ball 50 presses against the conical sealing surface 26, which the flow channel 24th closes again.
  • the movement of the valve plate 44 is characterized by the the gap between the valve plate 44 and the collar 28 of the valve body 20 fuel to be displaced damped the closing movement the valve plate 44 slows down, causing the valve plate to spring back 44 effectively prevented after impacting the valve ball 50 becomes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Multiple-Way Valves (AREA)
  • Sliding Valves (AREA)
EP00107266A 1999-04-07 2000-04-03 Soupape de commande Expired - Lifetime EP1043497B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19915686A DE19915686A1 (de) 1999-04-07 1999-04-07 Schaltventil
DE19915686 1999-04-07

Publications (3)

Publication Number Publication Date
EP1043497A2 true EP1043497A2 (fr) 2000-10-11
EP1043497A3 EP1043497A3 (fr) 2003-04-16
EP1043497B1 EP1043497B1 (fr) 2004-12-01

Family

ID=7903784

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00107266A Expired - Lifetime EP1043497B1 (fr) 1999-04-07 2000-04-03 Soupape de commande

Country Status (4)

Country Link
US (1) US6360972B1 (fr)
EP (1) EP1043497B1 (fr)
JP (1) JP3667592B2 (fr)
DE (2) DE19915686A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10161002A1 (de) * 2001-12-12 2003-07-03 Bosch Gmbh Robert Magnetventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine
WO2006042488A1 (fr) * 2004-10-21 2006-04-27 Robert Bosch Gmbh Injecteur de carburant
WO2008046679A1 (fr) * 2006-10-18 2008-04-24 Robert Bosch Gmbh injecteur d'injection de carburant
WO2017050470A1 (fr) * 2015-09-21 2017-03-30 Robert Bosch Gmbh Soupape, notamment soupape d'aspiration, dans une pompe d'alimentation haute pression d'un système d'injection de carburant

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7051992B2 (en) * 2003-08-25 2006-05-30 Delphi Technologies, Inc. Tubeless actuator with reduced secondary air gap
DE102004015661B4 (de) * 2004-03-31 2007-08-23 Bosch Rexroth Ag Elektropneumatisches Ventil, insbesondere Vorsteuerventil für ein pneumatisches Wegeventil
DE102007056913A1 (de) * 2007-11-26 2009-05-28 Robert Bosch Gmbh Einspritzdüse für Kraftstoff mit Kugelventil

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597186B1 (fr) * 1986-04-14 1990-01-12 Europ Propulsion Soupape ou vanne fonctionnant sans frottement
IT1240173B (it) * 1990-04-06 1993-11-27 Weber Srl Dispositivo di iniezione del carburante ad azionamento elettromagnetico per un motore a combustione interna
IT220660Z2 (it) * 1990-10-31 1993-10-08 Elasis Sistema Ricerca Fiat Perfezionamenti al sistema di otturatore per alta pressione in una valvola pilota di un iniettore elettromagnetico per sistemi di iniezione del combustibile di motori a combustione interna
DE4235077A1 (de) * 1992-10-17 1994-04-21 Bosch Gmbh Robert Ventil, insbesondere zum Einbau in ein Aggregat einer hydraulischen Fahrzeugbremsanlage
US5348233A (en) * 1993-03-01 1994-09-20 General Motors Corporation High volume gaseous fuel injector
DE4428385B4 (de) * 1994-08-11 2005-03-17 Robert Bosch Gmbh Ventilkörper
JP3524217B2 (ja) * 1995-06-19 2004-05-10 本田技研工業株式会社 電磁弁
IT1289795B1 (it) * 1996-12-23 1998-10-16 Elasis Sistema Ricerca Fiat Perfezionamenti ad una valvola di dosaggio a comando elettromagnetico, con otturatore a sfera, per un iniettore di combustibile.
IT1296144B1 (it) * 1997-11-18 1999-06-09 Elasis Sistema Ricerca Fiat Valvola di dosaggio registrabile per un iniettore di combustibile per motori a combustione interna.
DE19832826C2 (de) * 1998-07-21 2000-08-17 Bosch Gmbh Robert Montageverfahren für Kraftstoff-Einspritzventil und Vorsteuerventil sowie Kraftstoff-Einspritzventil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10161002A1 (de) * 2001-12-12 2003-07-03 Bosch Gmbh Robert Magnetventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine
WO2006042488A1 (fr) * 2004-10-21 2006-04-27 Robert Bosch Gmbh Injecteur de carburant
WO2008046679A1 (fr) * 2006-10-18 2008-04-24 Robert Bosch Gmbh injecteur d'injection de carburant
WO2017050470A1 (fr) * 2015-09-21 2017-03-30 Robert Bosch Gmbh Soupape, notamment soupape d'aspiration, dans une pompe d'alimentation haute pression d'un système d'injection de carburant

Also Published As

Publication number Publication date
EP1043497B1 (fr) 2004-12-01
DE19915686A1 (de) 2000-10-12
US6360972B1 (en) 2002-03-26
JP2000310170A (ja) 2000-11-07
DE50008794D1 (de) 2005-01-05
JP3667592B2 (ja) 2005-07-06
EP1043497A3 (fr) 2003-04-16

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