EP1283354A2 - Système d'injection de carburant - Google Patents

Système d'injection de carburant Download PDF

Info

Publication number
EP1283354A2
EP1283354A2 EP02016623A EP02016623A EP1283354A2 EP 1283354 A2 EP1283354 A2 EP 1283354A2 EP 02016623 A EP02016623 A EP 02016623A EP 02016623 A EP02016623 A EP 02016623A EP 1283354 A2 EP1283354 A2 EP 1283354A2
Authority
EP
European Patent Office
Prior art keywords
fuel
solenoid valve
fuel injection
injector
return
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Withdrawn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
EP02016623A
Other languages
German (de)
English (en)
Other versions
EP1283354A3 (fr
Inventor
Cornelio Leonardi
Rainer Haeberer
Marco Balice
Helmut Clauss
Hans-Peter Schaal
Andreas Rettich
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 EP1283354A2 publication Critical patent/EP1283354A2/fr
Publication of EP1283354A3 publication Critical patent/EP1283354A3/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/002—Arrangement of leakage or drain conduits in or from injectors
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings
    • F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/007—Venting 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/003—Valve inserts containing control chamber and valve piston

Definitions

  • the invention relates to a fuel injection device with an injector and a solenoid valve to control the injection process.
  • a solenoid valve to control the injection process.
  • Solenoid valve control solenoid
  • the installation space i.e. 90 ° to the injector, flanged to the injector housing.
  • Venting the armature space of the solenoid valve presents problems.
  • Known fuel injection device is proposed on a End of the solenoid valve facing away from the injector provided. This can lead to installation space problems. Finds an insufficient one Venting, d. H. formation of air bubbles in the anchor space occurs a lack of damping in the absence of fuel. The anchor tilts in such cases to vibrations.
  • FIG. 1 shows the structure of part of a fuel injection device 1 is visible.
  • the general structure of such a fuel injection device 1 is known and is described, for example, in EP 0 907 018 A2. Therefore, Fig. 1 shows only the upper part.
  • a pressure line 2 in a housing 3 of an injector 3 'of the fuel injection device 1 leads to high-pressure fuel to a nozzle space, not shown in FIG. 1.
  • a push rod 4 bears against a nozzle needle, also not shown, in such a way that it can be moved from an open position to a closed position or vice versa.
  • the movement of the nozzle needle is controlled via the pressure ratio in a control space 5 to the nozzle space, since the control space 5 in a valve piece 6 is also filled with fuel under high pressure via a pressure line 7 .
  • the control room 5 can be relieved of pressure to carry out the fuel injection by continuously connecting the control room 5 to a return bore, which is connected to a fuel tank, by means of a solenoid valve 8 arranged at a 90 ° angle to the push rod.
  • the solenoid valve 8 closes an opening in a valve plate 9 via a pressurizable ball 10 .
  • the solenoid valve 8 which is known in its functional design, further comprises an armature guide 11 , an armature pin 12 , an armature plate 13 , a valve spring 14 and an armature plate spring 15 . If the anchor bolt 15 is pulled back when the solenoid valve 8 flows against it (open valve position), the pressure relief of the control room 5 is initiated. This results in the bold or dotted flow guidance within the solenoid valve 8. Air bubble formation in an armature space 16 of the solenoid valve 8 is avoided because the flow guidance entrains air bubbles and leads out of the solenoid valve 8 to the outside.
  • a leakage line 17 for returning fuel from a pressure rod chamber when the nozzle needle is open is connected to a lower flow channel 18 , so that a leakage quantity from the pressure rod region and a control quantity of fuel from the control region are combined at this point.
  • the air bubbles are first forced into an upper flow channel 19 and then into the return bore and thus out of the solenoid valve 8. Fuel is diverted in the solenoid valve 8 and led out again. A flow guidance over flow channels is formed, which avoids a backflow.
  • the input channel is divided into two flow paths S 1 and S 2 in order to lead fuel up to the valve spring 14, preferably to unite there, then again in opposite directions on two further flow paths S 3 and Lead out S 4 in the direction of the inlet channel (valve plate 9) and feed it to the fuel tank again (fuel return indicated by dots).
  • the arrangement of the seals 20, 21, 23, 25 takes into account the pressures applied to the seals 20, 21, 23, 25.
  • Hard metallic seals are proposed for high pressures. Teflon® seals are suggested for seals that are exposed to lower pressures or that have less of a leakage effect.
  • the control room 5 is limited at the top by a hard seal.
  • the seal 23 is pressed upward by the pressure acting on the seal 23, as a result of which the control space 5 is kept as minimal as possible. Via the support ring 24 and the shape of the space around the seal 23, the seal 23 is brought into a defined axial position. Since the pressure difference between the ring channel 22 and the control room 5 is smaller than the pressure difference between the control room 5 and the housing 3, the use of the sealing material Teflon® is justified.
  • a radial fixation between the housing 3 and the valve piece 6 is carried out by means of a metallic pin 26 according to FIG. 2 .
  • a semicircular bore 27, 28 is provided, in the space between which the pin 26 is pressed and thus provides a clear assignment.
  • the arrangement of the fixation on a large diameter makes the assignment insensitive to tolerances.
  • the lugs 30 protrude into the housing 3 and thus prevent the disk 27 from rotating when a locking screw 31 is tightened. A rotation of the valve piece 6 when tightening the screw plug 29 is thus excluded.

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)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)
EP02016623A 2001-08-11 2002-07-25 Système d'injection de carburant Withdrawn EP1283354A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001139680 DE10139680A1 (de) 2001-08-11 2001-08-11 Kraftstoffeinspritzeinrichtung
DE10139680 2001-08-11

Publications (2)

Publication Number Publication Date
EP1283354A2 true EP1283354A2 (fr) 2003-02-12
EP1283354A3 EP1283354A3 (fr) 2003-11-26

Family

ID=7695277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02016623A Withdrawn EP1283354A3 (fr) 2001-08-11 2002-07-25 Système d'injection de carburant

Country Status (3)

Country Link
EP (1) EP1283354A3 (fr)
JP (1) JP2003113762A (fr)
DE (1) DE10139680A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0907018A2 (fr) 1997-10-02 1999-04-07 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Injecteur de combustible à commande électromagnétique pour moteurs à combustion interne

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4605166A (en) * 1985-02-21 1986-08-12 Stanadyne, Inc. Accumulator injector
DE59308610D1 (de) * 1992-12-23 1998-07-02 Ganser Hydromag Brennstoffeinspritzventil
US5671715A (en) * 1995-04-27 1997-09-30 Nipon Soken, Inc. Fuel injection device
JP3446432B2 (ja) * 1995-12-05 2003-09-16 株式会社デンソー 燃料噴射装置
DE69719461T2 (de) * 1996-11-21 2004-01-15 Denso Corp Speicherkraftstoffeinspritzvorrichtung für Verbrennungsmotor
DE19917190A1 (de) * 1999-04-16 2000-10-26 Mtu Friedrichshafen Gmbh Kraftstoffinjektor für eine Brennkraftmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0907018A2 (fr) 1997-10-02 1999-04-07 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Injecteur de combustible à commande électromagnétique pour moteurs à combustion interne

Also Published As

Publication number Publication date
JP2003113762A (ja) 2003-04-18
DE10139680A1 (de) 2003-02-27
EP1283354A3 (fr) 2003-11-26

Similar Documents

Publication Publication Date Title
DE602005000662T2 (de) Einspritzventil einer Brennkraftmaschine
EP0302068B1 (fr) Soupape de non-retour
DE4442085C2 (de) Elektromagnetisch betätigbares Proportionaldruckregelventil
EP1700058B1 (fr) Soupape de commande d'un fluide
DE3102642A1 (de) Elektromagnetisches kraftstoffeinspritzventil
DE68916435T2 (de) Schnell ansprechendes, druckausgeglichenes, elektromagnetisches hochdruck-steuerventil.
EP4288654A1 (fr) Injecteur pour insuffler un gaz dans une chambre de combustion ou dans une tubulure d'admission d'un véhicule automobile
DE69107405T2 (de) Hochdruck-Dichtungssystem für das Steuerventil eines elektromagnetischen Brennstoffeinspritzventils für Verbrennungsmotoren.
DE102021212342B3 (de) Druckbehälter mit mehreren seitlichen Ausströmöffnungen
EP0615064B1 (fr) Système de commande d'une soupape d'injection d'un moteur à combustion interne
DE10016242A1 (de) Druckregelventil mit integrierter Sicherheitsfunktion
DE2439842A1 (de) Drosselventil
EP1407134B1 (fr) Dispositif d'injection de carburant haute pression
DE202021105982U1 (de) Druckbehälter
EP1043496B1 (fr) Injecteur de combustible pour un moteur à combustion interne
EP1283354A2 (fr) Système d'injection de carburant
DE19937677C2 (de) Einspritzventil mit verbesserter Dichtflächenanordnung
EP1961949B1 (fr) Injecteur doté d'une servo-vanne supplémentaire
DE1193325B (de) Regelbares Einspritzventil
DE10216622B3 (de) Einstückig ausgebildetes Steuermodul für einen Kraftstoffinjektor
DE10050599B4 (de) Einspritzventil mit einem Pumpkolben
DE102018001441B4 (de) Ventilvorrichtung
DE102017210362B4 (de) Proportionalventil zum Steuern eines gasförmigen Mediums
DE2639721A1 (de) Mehrkreisschutzventil fuer druckluftanlagen
DE10121340A1 (de) Common-Rail-Injektor

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

17P Request for examination filed

Effective date: 20040526

AKX Designation fees paid

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 20040917

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: 20041218