EP2619441B1 - Procédé pour vérifier et remettre en état un injecteur de carburant - Google Patents

Procédé pour vérifier et remettre en état un injecteur de carburant Download PDF

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Publication number
EP2619441B1
EP2619441B1 EP11767597.5A EP11767597A EP2619441B1 EP 2619441 B1 EP2619441 B1 EP 2619441B1 EP 11767597 A EP11767597 A EP 11767597A EP 2619441 B1 EP2619441 B1 EP 2619441B1
Authority
EP
European Patent Office
Prior art keywords
injector
functional components
nozzle
internal combustion
combustion engine
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.)
Not-in-force
Application number
EP11767597.5A
Other languages
German (de)
English (en)
Other versions
EP2619441A1 (fr
Inventor
Martin Bernhaupt
Martin Jordan
Sebastian Rettenbacher
Gerhard Russegger
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 EP2619441A1 publication Critical patent/EP2619441A1/fr
Application granted granted Critical
Publication of EP2619441B1 publication Critical patent/EP2619441B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/48—Assembling; Disassembling; Replacing
    • 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
    • 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
    • F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of 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
    • 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
    • F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
    • F02M65/001—Measuring fuel delivery of a fuel injector
    • 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
    • F02M2200/40—Fuel-injection apparatus with fuel accumulators, e.g. a fuel injector having an integrated fuel accumulator
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8092—Fuel injection apparatus manufacture, repair or assembly adjusting or calibration
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing
    • Y10T29/49721—Repairing with disassembling
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49764—Method of mechanical manufacture with testing or indicating

Definitions

  • the invention relates to a method for checking and repairing an injector for injecting fuel into the combustion chamber of an internal combustion engine, wherein the injector has a nozzle, a throttle plate and a control valve and a nozzle retaining nut which holds said parts together and with which said parts on a Injector body of the injector are attached.
  • servo-controlled injectors for internal combustion engines in particular in modular common rail injection systems, the control of the injection takes place with the aid of an electronically controlled control or servo valve.
  • the control valve controls the outflow of fuel from the control chamber of an injection nozzle, which realizes the hydraulic actuation of an injection nozzle.
  • Modular common-rail injection systems are injection systems that are primarily used in particularly large engines in which the individual injectors may be mounted at a considerable distance from each other, so that the sole use of a common rail for the injectors is not useful. In such engines, it is therefore intended to assign each individual injector its own high-pressure fuel storage, which is integrated in the injector.
  • each injector has its own high-pressure fuel storage and thus can be used as a stand-alone injector unit.
  • a high-pressure fuel storage is not an ordinary line to understand, but it is at a high-pressure fuel storage to a pressure-resistant vessel with an inlet and a derivative whose diameter is significantly increased compared to the high pressure lines, so delivered from the high-pressure fuel storage a certain amount of injection can be, without causing an immediate pressure drop, such as this would be the case if the injection quantity were taken from an ordinary high-pressure line.
  • the modular injectors to which the present invention relates in addition to the integrated in the injector high-pressure fuel storage on a functional group consisting of a nozzle, a throttle plate and a control valve as functional components, which are bolted to the injector body with a nozzle lock nut.
  • the injection characteristic of an injector is influenced exclusively by the tolerance positions of the functional components described above. In order to ensure that the injection quantity of the individual injectors runs within a very narrow tolerance band, it is often not sufficient for the nozzle, throttle plate and servo valve to be manufactured to a tight tolerance. In many cases, these three functional components with specific features are selectively paired with one another or individual properties only selectively produced or set after the other functional components have been measured for their function-critical features. So that an injector works within a very narrow tolerance range, the right combination of nozzle, throttle plate and servo or control valve is crucial.
  • the injectors are completely bolted during initial assembly and functionally tested on very costly calibrated test benches. Injectors that are outside the specified tolerance limits are dismantled again, one or more functional components are replaced, the injectors are screwed back on and rechecked. After a certain period of operation on the engine, it is further regularly provided that the injectors are cleaned and disassembled, renewed the functional components as needed and then mounted the entire injectors as in the first delivery case and functionally tested. In both cases, in addition to the relatively light and small functional components in each case at the place of manufacture of the injectors with the previously known inspection and repair procedures with the partially very heavy injector bodies, which sometimes weigh 10 kg and more, are handled. In the case of repair, all injectors with the high-pressure fuel storage tanks must be collected and transported to a central location where they can be repaired ( DE 10 2005 004327 ).
  • the invention is therefore based on the object to further develop a method of the type mentioned above, that for the adjustment and repair of the functional components that determine the injection characteristics of the respective injector, the handling of the heavy and cumbersome storage can be avoided.
  • the method according to the invention is therefore characterized in that the functional components nozzle, throttle plate and servo valve are separated from the injector body, a connecting piece serving to connect the functional components to a test stand is screwed with the Furitechnischskomponenten to an injector module using the nozzle retaining nut and injector module connected to a test bench and subjected to a check and then, if necessary, a repair.
  • the injector body can be separated from the functional components, the injector body can remain on the internal combustion engine, while the functional components can be independently subjected to a check and, if necessary, a maintenance, and with little effort already preset new functional components of a second injector module an injector body of an internal combustion engine can be placed so that the internal combustion engine with only little installation effort is ready for use again.
  • a preferred procedure provides that the injector module is broken down into its individual parts connector, servo valve, throttle plate, nozzle and nozzle retaining nut and the new functional components nozzle, throttle plate and servo valve with the new nozzle lock nut with the on Internal combustion engine remaining injector body to be screwed to a new injector.
  • connection piece is preferably screwed to the disassembled functional components and the old nozzle retaining nut, brought back to the production facility and connected to a test rig, which simulates the connection situation in the internal combustion engine.
  • a test rig which simulates the connection situation in the internal combustion engine.
  • connection piece serves to be able to carry out a test of the functional components in the injector module thus formed independently of the injector body on a test stand and as a transport lock for the functional components located in the injector module.
  • the functional components nozzle, throttle plate and servo valve are fixed by the nozzle retaining nut on the injector body. After the expansion There is thus the danger that the parts may become loose or be lost during transport for repair.
  • the method according to the invention is therefore preferably developed in such a way that the connecting piece is inserted into the nozzle retaining nut in such a way that the nozzle, the throttle plate and the control valve are held in place in the nozzle retaining nut.
  • Fig. 1 1 denotes an injector according to the invention, in which the functional components of the injector are arranged in the form of a nozzle 3, a throttle plate 4 and a control valve 5, wherein the functional components are fixed by means of a nozzle retaining nut 6 on the injector body 7, which contains a storage volume.
  • the screw connection between the injector body 7 and the nozzle retaining nut 6 is released and the functional components 3, 4, 5 are removed.
  • the functional components 3, 4, 5 by means of the nozzle lock nut 6 with a connector 8 to the in Fig. 2 shown injector module 2, which holds on the one hand, the functional components 3, 4, 5 during transport for inspection or repair in the nozzle retaining nut 6 and on the other hand to the test stand for checking the functional components 3, 4, 5 in the injector module 2 can be connected.

Landscapes

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

Claims (2)

  1. Procédé pour vérifier et remettre en état un injecteur pour l'injection de carburant dans la chambre de combustion d'un moteur à combustion interne, l'injecteur comprenant une buse, une plaque d'étranglement et une soupape de commande ainsi qu'un écrou de serrage de buse qui maintient ensemble lesdites parties et à l'aide duquel lesdites parties sont fixées à un corps d'injecteur de l'injecteur, caractérisé en ce que les composants fonctionnels que sont la buse (3), la plaque d'étranglement (4) et la soupape de commande (5) sont séparés du corps d'injecteur (7), une pièce de raccordement (8) servant à la liaison des composants fonctionnels (3, 4, 5) à un banc d'essai est vissée à l'aide de l'écrou de serrage de buse (6) sur les composants fonctionnels (3, 4, 5) pour former un module d'injecteur (2) et le module d'injecteur (2) est raccordé à un banc d'essai et est soumis à une vérification et ensuite éventuellement à une remise en état, le vissage de la pièce de raccordement (8) sur les composants fonctionnels (3, 4, 5) pour former le module d'injecteur (2) s'effectuant à l'emplacement du moteur à combustion interne, le module d'injecteur (2) étant ensuite transporté jusqu'à un banc d'essai éloigné de l'emplacement du moteur à combustion interne et les composants fonctionnels (3, 4, 5) étant vérifiés, et la remise en état des composants fonctionnels (3, 4, 5) s'effectuant dans une installation de fabrication éloignée de l'emplacement du moteur à combustion interne, sans que le corps d'injecteur (7) soit également transporté jusqu'à l'installation de fabrication.
  2. Procédé selon la revendication 1, caractérisé en ce que la pièce de raccordement (8) est vissée sur l'écrou de serrage de buse (6) de telle sorte que la buse (3), la plaque d'étranglement (4) et la soupape de commande (5) soient retenues dans l'écrou de serrage de buse (6).
EP11767597.5A 2010-09-22 2011-09-22 Procédé pour vérifier et remettre en état un injecteur de carburant Not-in-force EP2619441B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA1578/2010A AT510462B1 (de) 2010-09-22 2010-09-22 Verfahren zum überprüfen und instandsetzen eines kraftstoffinjektors
PCT/AT2011/000390 WO2012037590A1 (fr) 2010-09-22 2011-09-22 Procédé pour vérifier et remettre en état un injecteur de carburant

Publications (2)

Publication Number Publication Date
EP2619441A1 EP2619441A1 (fr) 2013-07-31
EP2619441B1 true EP2619441B1 (fr) 2015-09-09

Family

ID=44785054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11767597.5A Not-in-force EP2619441B1 (fr) 2010-09-22 2011-09-22 Procédé pour vérifier et remettre en état un injecteur de carburant

Country Status (7)

Country Link
US (1) US9228552B2 (fr)
EP (1) EP2619441B1 (fr)
JP (1) JP5718469B2 (fr)
KR (1) KR101495511B1 (fr)
CN (1) CN103109073B (fr)
AT (1) AT510462B1 (fr)
WO (1) WO2012037590A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8467133B2 (en) 2010-02-28 2013-06-18 Osterhout Group, Inc. See-through display with an optical assembly including a wedge-shaped illumination system
CN103557106B (zh) * 2013-11-18 2015-07-22 沈阳黎明航空发动机(集团)有限责任公司 喷油环流量试验装置及其使用方法
DE102013018177B4 (de) 2013-11-29 2016-01-28 L'orange Gmbh Kraftstoffinjektormodul sowie Kraftstoffinjektor und Prüfanordnung damit
KR101806811B1 (ko) * 2015-02-09 2017-12-08 바르실라 핀랜드 오이 내연 피스톤 엔진의 연료 공급 파이프 시스템에서 사용되도록 구성된 연료 공급 요소 및 연료 공급 파이프 시스템
US10125713B2 (en) * 2016-12-06 2018-11-13 GM Global Technology Operations LLC Method of detecting a clogging of a fuel injector in an internal combustion engine

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
JPS6060267A (ja) 1983-09-12 1985-04-06 Yanmar Diesel Engine Co Ltd ユニツトインジエクタの噴射圧力測定装置
JP2748673B2 (ja) * 1989-11-10 1998-05-13 トヨタ自動車株式会社 噴射ノズル特性測定装置
DE4110226A1 (de) * 1991-03-28 1992-05-27 Bosch Gmbh Robert Pruefvorrichtung zur einspritzdruckbestimmung von pumpeduesen
US6745465B1 (en) * 1994-05-11 2004-06-08 Caterpillar Inc Method for assembling an apparatus, such as a fuel injector, using select fit of dimensional control features
JPH10252615A (ja) * 1997-03-14 1998-09-22 Nippon Injector Kk 燃料噴射ノズルの洩れ試験装置
US6644099B2 (en) 2001-12-14 2003-11-11 Specialty Completion Products Shaped charge tubing cutter performance test apparatus and method
DE10250720A1 (de) 2002-10-31 2004-05-13 Robert Bosch Gmbh Einspritzventil
DE102004021652A1 (de) 2004-05-03 2005-12-01 Siemens Ag Verfahren zum Herstellen eines Injektors
DE102005004327A1 (de) 2005-01-31 2006-08-03 Robert Bosch Gmbh Elektrische Trennung in Kraftstoffinjektoren
DE102005005690B3 (de) * 2005-02-08 2006-09-28 Siemens Ag Verfahren zur Herstellung eines Düsenkörpers und Düsenkörper
DE102005020833A1 (de) 2005-05-04 2006-11-09 Robert Bosch Gmbh Kraftstoffeinspritzmodul
DE102006046898A1 (de) * 2006-10-04 2008-04-10 Robert Bosch Gmbh Drosselplatte für Magnetventil
DE102006050163A1 (de) 2006-10-25 2008-04-30 Robert Bosch Gmbh Injektor mit axial-druckausgeglichenem Steuerventil
FR2917137B1 (fr) 2007-06-06 2013-10-11 Renault Sas Adaptateur pour test d'injecteur.
DE102007028900B4 (de) * 2007-06-22 2013-06-27 Continental Automotive Gmbh Verfahren und Vorrichtung zur Diagnose eines mit einer Kraftstoffverteilerleiste in Verbindung stehenden Einspritzventils einer Brennkraftmaschine
US7993125B2 (en) * 2008-06-30 2011-08-09 Caterpillar Inc. Repair tool for injection molding hot runner system

Also Published As

Publication number Publication date
KR101495511B1 (ko) 2015-02-26
US9228552B2 (en) 2016-01-05
WO2012037590A1 (fr) 2012-03-29
CN103109073A (zh) 2013-05-15
AT510462A1 (de) 2012-04-15
US20130185908A1 (en) 2013-07-25
CN103109073B (zh) 2016-06-15
EP2619441A1 (fr) 2013-07-31
JP5718469B2 (ja) 2015-05-13
JP2013537949A (ja) 2013-10-07
KR20130080846A (ko) 2013-07-15
AT510462B1 (de) 2014-04-15

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