EP0915254A2 - Injecteur commandé par une vanne magnétique pour un système d' accumulation d'un moteur à combustion interne à plusieurs cylindres - Google Patents

Injecteur commandé par une vanne magnétique pour un système d' accumulation d'un moteur à combustion interne à plusieurs cylindres Download PDF

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Publication number
EP0915254A2
EP0915254A2 EP98119433A EP98119433A EP0915254A2 EP 0915254 A2 EP0915254 A2 EP 0915254A2 EP 98119433 A EP98119433 A EP 98119433A EP 98119433 A EP98119433 A EP 98119433A EP 0915254 A2 EP0915254 A2 EP 0915254A2
Authority
EP
European Patent Office
Prior art keywords
control piston
housing part
chamber
valve element
nozzle
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Withdrawn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
EP98119433A
Other languages
German (de)
English (en)
Other versions
EP0915254A3 (fr
Inventor
Ulrich Dr. Augustin
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.)
Daimler AG
Original Assignee
DaimlerChrysler AG
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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP0915254A2 publication Critical patent/EP0915254A2/fr
Publication of EP0915254A3 publication Critical patent/EP0915254A3/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Withdrawn legal-status Critical Current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
    • 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
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated valves
    • 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
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0005—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using valves actuated by fluid pressure

Definitions

  • the invention relates to a solenoid-controlled injector for a storage injection system of a multi-cylinder internal combustion engine, consisting of a multi-part injector housing with a spring-loaded nozzle body, with a control piston under system pressure in one Housing part and a valve element to shut off a supply line leading to the nozzle needle, further with one of the control piston on its side facing away from the nozzle needle limited control room, which on the one hand with the supply line via a line arrangement integrated in the control piston and valve element constantly communicates and on the other hand connectable to a relief line by means of a solenoid valve and with a nozzle spring chamber on the back of the nozzle needle.
  • Such an injector is known from DE 196 12 738 A1.
  • This injector has a control piston with an integrated valve element and is in an upper case and a lower one Part of the injector housing led.
  • the valve element is formed by a conical outer collar on the control piston, whose conical seat surface with a valve seat on a lower one Housing part interacts.
  • the feed line runs through the special valve arrangement partially in the lower housing part and partially in the upper housing part.
  • the invention has for its object measures on the generic Provide injector through the without interference a slim design of the injector with simple means an improvement of the internal seal is possible.
  • a solenoid-controlled injector 1 for a not shown Accumulator injection system of a multi-cylinder internal combustion engine consists essentially of one in the nozzle body 2 guided spring-loaded nozzle needle 3, the height of their Pressure shoulder 3a is surrounded by a pressure chamber 4, from a Control piston 5 in an upper housing part 6 of the injector housing 7 and a valve element cooperating with the control piston 5 8 in a lower housing part 9 and from a Head end of the injector 1 arranged solenoid valve 10.
  • the valve element 8 is designed as a servo valve piston one connected to the storage system and to the pressure chamber of the Nozzle needle 3 leading supply line 11 controls.
  • the feed line 11 consists of an outer circumference of the lower housing part 9 outgoing radial line section 11a and one this line section 11a and the servo valve element surrounding annular chamber 30 connecting central line section 11b and one leading away from the annular chamber 30 oblique line section 11c in the lower housing part 9.
  • the line section adjoins the line section 11c 21a in the pressure plate 21 and in the pressure chamber 4 opening pipe section 2a in the nozzle body 2.
  • the diameter of the servo valve piston is smaller than the control piston. Both pistons are one each Through hole 8a and 5a passes through, which are coaxial with each other lie so that regardless of the position of the Servo valve piston including the closed position of this Servo valve piston a constant flow connection from the Supply line 11 a to a delimited by the control piston 5 Control room 12 results.
  • Control piston 5 and servo valve piston 8 are by small bumps 13,14 formed on the end faces of the two pistons.
  • the humps 13,14 are at the level of the parting plane A of the control piston and Servo valve pistons and are smaller in diameter than the servo valve piston 8.
  • Both humps 13, 14 and the upper housing part 6 delimit an annular space 15 through a line connection on the one hand with a solenoid valve chamber 16 and on the other hand communicates with a nozzle spring chamber 17.
  • the line connection consists of a radial groove 18, that on the nozzle-side end face of the upper housing part 6 is incorporated, from a flat 19 on the outer circumference of the upper housing part 6 and a connecting hole 20 in the lower Housing part 9 of the servo valve piston together. It results there is a leakage connection on the one hand from the annular space 15 the groove 18 and flat 19 in the solenoid valve chamber 16 and others from the groove 18 via the connecting bore 20 in the Nozzle spring chamber 17.
  • the nozzle spring chamber 17 is located in a between the nozzle body 2 and lower housing part 9 lying pressure plate 21. Nozzle body 2 and pressure plate 21 are through an adapter sleeve 22 clamped to the lower housing part 9. Furthermore, the solenoid valve 10 and the upper housing part 6 by another Clamping sleeve 23 clamped to the lower housing part 9.
  • the control room 12 also contains a longitudinally displaceable plate 24 with a solenoid valve-side through channel 24a and one into this central small throttle 25, the opposite an inlet throttle 26 in the through hole 5a of the Control piston 5 and an outlet throttle 27 between the control chamber 12 and valve ball 28 of the solenoid valve 10 a smaller one Passage cross section.
  • the arrangement of this tile 24 with defined throttle 25 minimizes leakage.
  • the lower housing part 9 also contains a designated 31 Locking piston connected by a throttle connection 32 to the feed line 11 is connected.
  • a throttle connection 32 to the feed line 11 is connected.

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)
EP98119433A 1997-11-06 1998-10-15 Injecteur commandé par une vanne magnétique pour un système d' accumulation d'un moteur à combustion interne à plusieurs cylindres Withdrawn EP0915254A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19748999A DE19748999C2 (de) 1997-11-06 1997-11-06 Magnetventilgesteuerter Injektor für ein Speichersystem einer mehrzylindrigen Brennkraftmaschine
DE19748999 1997-11-06

Publications (2)

Publication Number Publication Date
EP0915254A2 true EP0915254A2 (fr) 1999-05-12
EP0915254A3 EP0915254A3 (fr) 2002-07-17

Family

ID=7847771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98119433A Withdrawn EP0915254A3 (fr) 1997-11-06 1998-10-15 Injecteur commandé par une vanne magnétique pour un système d' accumulation d'un moteur à combustion interne à plusieurs cylindres

Country Status (3)

Country Link
US (1) US6027047A (fr)
EP (1) EP0915254A3 (fr)
DE (1) DE19748999C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012004341A1 (fr) 2010-07-07 2012-01-12 Leica Geosystems Ag Appareil de relevé géodésique doté d'une fonctionnalité de visée automatique de grande précision du point de mire
EP2570769A1 (fr) 2011-09-13 2013-03-20 Hexagon Technology Center GmbH Système de mesure géodésique et procédé doté d'une fonctionnalité de suivi de cible multiple

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19732070C2 (de) * 1997-07-25 2001-02-01 Daimler Chrysler Ag Direkteinspritzendes Kraftstoffeinspritzventil mit Magnetventilsteuerung für eine mehrzylindrige Brennkraftmaschine
GB9820239D0 (en) * 1998-09-18 1998-11-11 Lucas Ind Plc Fuel injector
DE19860397A1 (de) * 1998-12-28 2000-06-29 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE10031583A1 (de) * 2000-06-29 2002-01-17 Bosch Gmbh Robert Hochdruckfester Injektor mit kugelförmigem Ventilelement
DE10031572A1 (de) * 2000-06-29 2002-01-17 Bosch Gmbh Robert Injektor mit ablaufseitiger Steuerfläche
DE10032924A1 (de) * 2000-07-06 2002-01-24 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE10042231B4 (de) * 2000-08-28 2004-09-30 Siemens Ag Einspspritzventil für die Einspritzung von Kraftstoff in eine Verbrennungskraftmaschine sowie Verfahren zur Steuerung des Öffnungs-und Schließvorgangs einer Düsennadel eines Einspritzventils
DE10125943A1 (de) * 2001-05-29 2002-12-05 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE10160262A1 (de) * 2001-12-07 2003-06-18 Bosch Gmbh Robert Injektor, insbesondere für Common-Rail-Einspritzsysteme von Dieselmotoren
US7278593B2 (en) * 2002-09-25 2007-10-09 Caterpillar Inc. Common rail fuel injector
AT500889B8 (de) * 2004-08-06 2007-02-15 Bosch Gmbh Robert Vorrichtung zum einspritzen von kraftstoff in den brennraum einer brennkraftmaschine
US7412969B2 (en) * 2006-03-13 2008-08-19 Sturman Industries, Inc. Direct needle control fuel injectors and methods
WO2008141237A1 (fr) * 2007-05-09 2008-11-20 Sturman Digital Systems, Llc Injecteurs-multiplicateurs de pression multiples avec commande d'aiguille positive et procédés d'injection
US20100012745A1 (en) * 2008-07-15 2010-01-21 Sturman Digital Systems, Llc Fuel Injectors with Intensified Fuel Storage and Methods of Operating an Engine Therewith
US9181890B2 (en) 2012-11-19 2015-11-10 Sturman Digital Systems, Llc Methods of operation of fuel injectors with intensified fuel storage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657642A2 (fr) * 1993-12-07 1995-06-14 Robert Bosch Gmbh Dispositif d'injection de combustible pour moteurs à combustion interne
US5526791A (en) * 1995-06-07 1996-06-18 Diesel Technology Company High-pressure electromagnetic fuel injector
DE19612738A1 (de) * 1995-04-05 1996-10-10 Avl Verbrennungskraft Messtech Speichereinspritzsystem für Brennkraftmaschinen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD114123A1 (fr) * 1974-04-17 1975-07-12 Karl Marx Stadt Automobilbau
US4603671A (en) * 1983-08-17 1986-08-05 Nippon Soken, Inc. Fuel injector for an internal combustion engine
US5605134A (en) * 1995-04-13 1997-02-25 Martin; Tiby M. High pressure electronic common rail fuel injector and method of controlling a fuel injection event
US5671715A (en) * 1995-04-27 1997-09-30 Nipon Soken, Inc. Fuel injection device
DE19516565C2 (de) * 1995-05-05 1998-07-30 Orange Gmbh Einspritzventil einer Brennkraftmaschine
GB9600771D0 (en) * 1996-01-13 1996-03-20 Lucas Ind Plc Fuel pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657642A2 (fr) * 1993-12-07 1995-06-14 Robert Bosch Gmbh Dispositif d'injection de combustible pour moteurs à combustion interne
DE19612738A1 (de) * 1995-04-05 1996-10-10 Avl Verbrennungskraft Messtech Speichereinspritzsystem für Brennkraftmaschinen
US5526791A (en) * 1995-06-07 1996-06-18 Diesel Technology Company High-pressure electromagnetic fuel injector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012004341A1 (fr) 2010-07-07 2012-01-12 Leica Geosystems Ag Appareil de relevé géodésique doté d'une fonctionnalité de visée automatique de grande précision du point de mire
EP2570769A1 (fr) 2011-09-13 2013-03-20 Hexagon Technology Center GmbH Système de mesure géodésique et procédé doté d'une fonctionnalité de suivi de cible multiple
WO2013037848A1 (fr) 2011-09-13 2013-03-21 Hexagon Technology Center Gmbh Système de mesure géodésique et procédé multifonctionnel de poursuite de cible

Also Published As

Publication number Publication date
DE19748999A1 (de) 1999-05-27
DE19748999C2 (de) 2002-11-07
US6027047A (en) 2000-02-22
EP0915254A3 (fr) 2002-07-17

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