EP2280160A3 - Fuel injection valve with increased small quantity capacity - Google Patents

Fuel injection valve with increased small quantity capacity Download PDF

Info

Publication number
EP2280160A3
EP2280160A3 EP10164578A EP10164578A EP2280160A3 EP 2280160 A3 EP2280160 A3 EP 2280160A3 EP 10164578 A EP10164578 A EP 10164578A EP 10164578 A EP10164578 A EP 10164578A EP 2280160 A3 EP2280160 A3 EP 2280160A3
Authority
EP
European Patent Office
Prior art keywords
valve
fuel injection
seat
valve seat
injection
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Withdrawn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
EP10164578A
Other languages
German (de)
French (fr)
Other versions
EP2280160A2 (en
Inventor
Andreas Rau
Frank-Ulrich Rueckert
Gerhard Suenderhauf
Werner Teschner
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 EP2280160A2 publication Critical patent/EP2280160A2/en
Publication of EP2280160A3 publication Critical patent/EP2280160A3/en
Withdrawn legal-status Critical Current

Links

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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1866—Valve seats or member ends having multiple cones
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1873—Valve seats or member ends having circumferential grooves or ridges, e.g. toroidal
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1886—Details of valve seats not covered by groups F02M61/1866 - F02M61/188
    • 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
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Die Erfindung betrifft ein Kraftstoffeinspritzventil für Brennkraftmaschinen mit einem Ventilkörper 1, in dem eine Bohrung 2 ausgearbeitet ist, die an einem Ende von einem Ventilsitz 3 begrenzt ist, von dem zumindest ein Einspritzkanal 5 abgeht, und mit einer Ventilnadel 6, die in der Bohrung 2 längsverschiebbar angeordnet ist und die an ihren dem Ventilsitz 3 zugewandten Ende eine Ventilsitzfläche 8 aufweist, mit der sie zum Öffnen und Schließen des wenigstens einen Einspritzkanals 5 mit dem Ventilsitz 3 zusammenwirkt und mit einem zwischen der Ventilnadel 6 und der Wand der Bohrung 2 ausgebildeten Druckraum 7, der mit Kraftstoff unter Druck befüllbar ist, wobei zwischen dem Ventilkörper 1 und der Ventilnadel 6 eine Drossel 10 angeordnet ist. Erfindungsgemäß wird ein Kraftstoffeinspritzventil bereitgestellt, welches bei großen Einspritzraten robust arbeitet, aber auch insbesondere kleine Einspritzraten zuverlässig gewährleisten kann. Dies wird dadurch erreicht, dass das Kraftstoffeinspritzventil benachbart zu dem Ventilsitz 3 einen Sitzabsatz 9, 9a, 9b aufweist und das die Drossel 10 zwischen dem Ventilsitz 3 und dem Sitzabsatz 9, 9a, 9b angeordnet ist.

Figure imgaf001
The invention relates to a fuel injection valve for internal combustion engines with a valve body 1, in which a bore 2 is worked out, which is bounded at one end by a valve seat 3, from which at least one injection channel 5 goes off, and with a valve needle 6, in the bore. 2 is longitudinally displaceable and at its the valve seat 3 facing the end has a valve seat surface 8, with which it cooperates to open and close the at least one injection channel 5 with the valve seat 3 and with a formed between the valve needle 6 and the wall of the bore 2 pressure chamber. 7 , which can be filled with fuel under pressure, wherein between the valve body 1 and the valve needle 6, a throttle 10 is arranged. According to the invention, a fuel injection valve is provided which works sturdily at high injection rates, but can also reliably ensure, in particular, small injection rates. This is achieved in that the fuel injection valve adjacent to the valve seat 3 has a seat 9, 9a, 9b and the throttle 10 is disposed between the valve seat 3 and the seat 9, 9a, 9b.
Figure imgaf001
EP10164578A 2009-07-29 2010-06-01 Fuel injection valve with increased small quantity capacity Withdrawn EP2280160A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910028089 DE102009028089A1 (en) 2009-07-29 2009-07-29 Fuel injection valve with increased small quantity capability

Publications (2)

Publication Number Publication Date
EP2280160A2 EP2280160A2 (en) 2011-02-02
EP2280160A3 true EP2280160A3 (en) 2013-01-16

Family

ID=43033014

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10164578A Withdrawn EP2280160A3 (en) 2009-07-29 2010-06-01 Fuel injection valve with increased small quantity capacity

Country Status (2)

Country Link
EP (1) EP2280160A3 (en)
DE (1) DE102009028089A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013209251A1 (en) 2013-05-17 2014-11-20 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
DE102013219568A1 (en) * 2013-09-27 2015-04-02 Robert Bosch Gmbh Fuel injection valve and a method for its production

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303470A1 (en) * 1983-02-02 1984-08-02 Jaroslavskij savod diselnoj apparatury, Jaroslavl Injection nozzle for combustion engines
JPS6026163A (en) * 1983-07-23 1985-02-09 Toyota Motor Corp Fuel injection valve for diesel engine
DE3734587A1 (en) * 1987-10-13 1989-05-03 Bosch Gmbh Robert Fuel injection nozzle for internal combustion engines
DE19755057A1 (en) * 1997-12-11 1999-06-17 Bosch Gmbh Robert Fuel injection nozzle for self-igniting internal combustion engines
DE10039083A1 (en) * 2000-08-10 2002-02-21 Bosch Gmbh Robert Fuel injector
US20080041344A1 (en) * 2005-07-08 2008-02-21 Richard Wing Fuel injection valve
WO2009072345A1 (en) * 2007-12-05 2009-06-11 Mitsubishi Heavy Industries, Ltd. Fuel injection valve for accumulator fuel injection device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10259169A1 (en) 2002-12-18 2004-07-01 Robert Bosch Gmbh Fuel injection valve for internal combustion engines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303470A1 (en) * 1983-02-02 1984-08-02 Jaroslavskij savod diselnoj apparatury, Jaroslavl Injection nozzle for combustion engines
JPS6026163A (en) * 1983-07-23 1985-02-09 Toyota Motor Corp Fuel injection valve for diesel engine
DE3734587A1 (en) * 1987-10-13 1989-05-03 Bosch Gmbh Robert Fuel injection nozzle for internal combustion engines
DE19755057A1 (en) * 1997-12-11 1999-06-17 Bosch Gmbh Robert Fuel injection nozzle for self-igniting internal combustion engines
DE10039083A1 (en) * 2000-08-10 2002-02-21 Bosch Gmbh Robert Fuel injector
US20080041344A1 (en) * 2005-07-08 2008-02-21 Richard Wing Fuel injection valve
WO2009072345A1 (en) * 2007-12-05 2009-06-11 Mitsubishi Heavy Industries, Ltd. Fuel injection valve for accumulator fuel injection device

Also Published As

Publication number Publication date
EP2280160A2 (en) 2011-02-02
DE102009028089A1 (en) 2011-02-10

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