EP0864038A1 - Codage a barres des donnees de rendement d'un injecteur - Google Patents

Codage a barres des donnees de rendement d'un injecteur

Info

Publication number
EP0864038A1
EP0864038A1 EP96941384A EP96941384A EP0864038A1 EP 0864038 A1 EP0864038 A1 EP 0864038A1 EP 96941384 A EP96941384 A EP 96941384A EP 96941384 A EP96941384 A EP 96941384A EP 0864038 A1 EP0864038 A1 EP 0864038A1
Authority
EP
European Patent Office
Prior art keywords
technical data
fuel injector
injector
recalling
data specifications
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Withdrawn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
EP96941384A
Other languages
German (de)
English (en)
Inventor
Richard Barron
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.)
Siemens Automotive Corp
Original Assignee
Siemens Automotive Corp
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 Siemens Automotive Corp filed Critical Siemens Automotive Corp
Publication of EP0864038A1 publication Critical patent/EP0864038A1/fr
Withdrawn legal-status Critical Current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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2432—Methods of calibration
    • F02D41/2435—Methods of calibration characterised by the writing medium, e.g. bar code
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2464—Characteristics of actuators
    • F02D41/2467—Characteristics of actuators for 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
    • 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

Definitions

  • This invention relates generally to electrically operated valves, such as fuel injectors for injecting liquid fuel into an internal combustion engine, and particularly to a method for using fuel injectors to improve automobile emissions.
  • the movement of certain electrically-operated valves comprises a needle that is reciprocated axially within the interior of the valve's body in response to electrical energization and de-energization of an electro-mechanical actuator to thereby selectively open and close a flow path through the valve.
  • Fuel injectors typically contain a solenoid assembly that includes an electromagnetic coil which, when energized, is operative to effect axial movement of an armature.
  • a solenoid valve comprises an armature movable between a first and second position for causing a needle valve to contact and separate from a valve seat.
  • the basic solenoid design includes a coil, a stationary ferromagnetic pole, and the movable ferromagnetic armature. The armature is kept separated from the pole by a force such as gravity, spring, or pressure.
  • Manufacturers of gasoline engines specify in the product engineering specifications the static and dynamic flow rates of a fuel injector. This specification has applied limits typically of + /-3.2% for static flow and + /-3% for dynamic flow.
  • fuel injectors are tested 100% for these characteristics and those falling outside these limits are discarded. Those inside the limits fit a normal statistical distribution typically displayed as a histogram. When the injector is assembled into an engine the performance of the injector may be from different ends of the statistical distribution although still within the overall specification, this can create variables in emissions of the vehicle. This mixture of rich and lean injectors directly affects the emissions.
  • the invention comprises the implementation of a symbology feature onto a fuel injector
  • Principles of the invention are of course potentially applicable to forms of fuel injectors other than the one specifically herein illustrated and described and can be accomplished by a variety of data retention and recall means.
  • a method for retaining and recalling technical data associated with a solenoid operated fuel injector comprises the steps of testing technical data associated with the fuel injector and transferring the technical data results to the injector. The injector is then scanned to inform a vehicle computer of the technical specifications of the injector. Variations between injectors can be adjusted for to improve engine emissions.
  • Fig. 1 is a cross section view of a typical fuel injector, having a technical data bar code provided on exterior of the injector in accordance with the present invention
  • Figs. 2A and 2B illustrate two embodiments of the bar coding on the injector of Fig. 1 .
  • a typical fuel injector 10 designed to inject fuel into an internal combustion engine.
  • the fuel injector 1 0 includes as its major components thereof a housing 1 2 of magnetically permeable material and an overmold housing 14; an inlet connector 1 6 in the form of a tube also of magnetically permeable material; an outlet end 1 8; an adjusting tube 20; a spring 22; an armature 24; a solenoid coil assembly 26, comprising a bobbin 28 and a wire 30; electrical terminals 32 via which the fuel injector is connected with an electrical operating circuit for selectively energizing the solenoid coil; and a valve body assembly 34.
  • the armature 24 is movable between a first and second position for causing a needle valve, or guide pin, 36 to contact and separate from a valve seat 38, as the pin 36 moves within guide 40.
  • the injector is of the type which is commonly referred to as a top-feed type, wherein fuel is introduced through inlet connector 1 6 and emitted as injections from the axially opposite nozzle, or tip, end 1 8.
  • Figs. 2A and 2B there are illustrated two embodiments of data retention according to the present invention, in the form of a linear bar code and a two-dimensional bar code, respectively.
  • the amount of data a linear bar code 42 such as is shown in Fig. 2A, can contain is limited to a few bytes.
  • two-dimensional (2D) symbologies 44 such as is illustrated in Fig. 2B, have been developed, which contain information along two axes, not just one.
  • the present invention addresses a method to keep technical test results of an injector, such as static flow, dynamic flow, leak and opening time, with the injector.
  • the data is preferably carried on the injector in symbology form, such as a bar code.
  • the bar code is preferably located on the exterior surface of the injector, such as at location 46, and is cut into the overmold housing 1 4 of the injector.
  • the data can then be downloaded to any existing vehicle computer system.
  • the computer system software is then adjusted to improve emissions.
  • a data marking means such as a laser marking system, may be used to transfer the technical data results and specifications onto the injector, preferably in a scannable form, such as a bar code.
  • the laser cuts the nylon molded surface of the overmold housing, resulting in a series of markings, such as white lines, that are readable with an appropriate scanner.
  • An engine manufacturer can then scan each injector at assembly, thereby informing the automobile computer of the technical specifications of each injector.
  • Associated software then "adjusts” or “offsets” given parameters to accommodate injector specification variations, thereby presenting all injectors as identical to the engine.
  • the present invention therefore, provides for a method of data retention and recall, and an "adjust" or “offset” means for collapsing the variability of multiple injectors to a single, centered, injector flow.
  • the injector manufacturing process can have an injector laser marking station to accommodate multiple digits of information. As will be obvious to those skilled in the art, this process is applicable to all fuel injectors.

Abstract

Cette invention concerne un procédé de stockage et de restitution de données techniques associées à un injecteur à valve électromagnétique (10), qui permet d'améliorer les émissions d'un moteur. On soumet chaque injecteur à un essai de façon à obtenir des spécifications de données techniques relatives audit injecteur. On transfert (46) ensuite les spécifications de données techniques à l'injecteur (10), par exemple en utilisant un marquage au laser permettant de marquer l'injecteur d'un code à barre (44) contenant ces spécifications de données techniques. Il est ensuite possible de lire ces spécifications de données techniques stockées sur l'injecteur en utilisant un explorateur. On transmet ensuite ces spécifications de données techniques restituées à un ordinateur du véhicule. Ce dernier corrige les variations existant entre les injecteurs de manière à réduire la variabilité du flux des injecteurs jusqu'à l'obtention d'un flux unique et centré.
EP96941384A 1995-11-27 1996-11-18 Codage a barres des donnees de rendement d'un injecteur Withdrawn EP0864038A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US56315195A 1995-11-27 1995-11-27
US563151 1995-11-27
PCT/US1996/018478 WO1997020136A1 (fr) 1995-11-27 1996-11-18 Codage a barres des donnees de rendement d'un injecteur

Publications (1)

Publication Number Publication Date
EP0864038A1 true EP0864038A1 (fr) 1998-09-16

Family

ID=24249312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96941384A Withdrawn EP0864038A1 (fr) 1995-11-27 1996-11-18 Codage a barres des donnees de rendement d'un injecteur

Country Status (5)

Country Link
EP (1) EP0864038A1 (fr)
JP (1) JP2000501155A (fr)
KR (1) KR19990071651A (fr)
BR (1) BR9611621A (fr)
WO (1) WO1997020136A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11352973B2 (en) 2019-04-04 2022-06-07 Caterpillar Inc. Machine system and operating strategy using auto-population of trim files

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Publication number Priority date Publication date Assignee Title
US5986871A (en) * 1997-11-04 1999-11-16 Caterpillar Inc. Method of operating a fuel injector
US6112720A (en) * 1998-09-28 2000-09-05 Caterpillar Inc. Method of tuning hydraulically-actuated fuel injection systems based on electronic trim
JP3487207B2 (ja) * 1999-02-01 2004-01-13 株式会社デンソー 燃料噴射システム
DE60007836T2 (de) 2000-04-01 2004-12-16 Robert Bosch Gmbh Ausgleich der Spieltoleranzen in verschieden Losen wegen der Schwankungen der Schichtdicke oder der Zahl der Schichten in mehrschichtigen piezoelektrischen Elementen
US6671611B1 (en) 2000-11-28 2003-12-30 Bombardier Motor Corporation Of America Method and apparatus for identifying parameters of an engine component for assembly and programming
DE10102193A1 (de) * 2001-01-16 2002-07-18 Volkswagen Ag Verfahren zum Aufbringen einer identifikationsnummer
JP4224947B2 (ja) * 2001-03-15 2009-02-18 株式会社デンソー 内燃機関およびその製造方法
ATE369890T1 (de) 2001-03-26 2007-09-15 Mach Solutions Inc Ballonfalttechnologie
JP4120590B2 (ja) * 2003-03-05 2008-07-16 株式会社デンソー インジェクタの部品組付方法
US7128281B2 (en) * 2004-06-03 2006-10-31 Siemens Vdo Automotive Corporation Modular fuel injector with a damper member and method of reducing noise
JP2006299957A (ja) * 2005-04-21 2006-11-02 Denso Corp 燃料噴射装置及びその調整方法
DE102005050567A1 (de) * 2005-10-21 2007-04-26 Robert Bosch Gmbh Brennstoffeinspritzventil und Verfahren zur Identifikation von Brennstoffeinspritzventilen
JP4487922B2 (ja) 2005-12-15 2010-06-23 株式会社デンソー 燃料噴射装置の初期設定方法、および燃料噴射装置の初期設定方法に用いられる初期設定装置
FR2920828A3 (fr) * 2007-09-06 2009-03-13 Renault Sas Procede et dispositif de memorisation des caracteristiques fonctionnelles d'un turbocompresseur
FR2920827A3 (fr) * 2007-09-06 2009-03-13 Renault Sas Procede et dispositif pour l'apprentissage de la permeabilite minimale de turbocompresseurs
BR202017028330U2 (pt) * 2017-12-27 2019-07-16 Robert Bosch Limitada Disposição construtiva introduzida em bomba de combustível
US20190277234A1 (en) * 2018-03-08 2019-09-12 Delphi Technologies Ip Limited Fuel injector and method of orienting an outlet of the same

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JPS59175751A (ja) * 1983-03-26 1984-10-04 Mitsubishi Electric Corp 樹脂封止形半導体装置
JPH02170016A (ja) * 1988-12-23 1990-06-29 Hitachi Ltd 熱線式空気流量計
US4972293A (en) * 1989-07-31 1990-11-20 Allied-Signal Inc. Coded electromagnetic device and system therefor
JPH03262086A (ja) * 1990-03-13 1991-11-21 Citizen Watch Co Ltd バーコードスキャナー
JPH07238857A (ja) * 1994-02-25 1995-09-12 Hino Motors Ltd 燃料噴射装置
US5634448A (en) * 1994-05-31 1997-06-03 Caterpillar Inc. Method and structure for controlling an apparatus, such as a fuel injector, using electronic trimming

Non-Patent Citations (1)

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See references of WO9720136A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11352973B2 (en) 2019-04-04 2022-06-07 Caterpillar Inc. Machine system and operating strategy using auto-population of trim files

Also Published As

Publication number Publication date
KR19990071651A (ko) 1999-09-27
JP2000501155A (ja) 2000-02-02
WO1997020136A1 (fr) 1997-06-05
BR9611621A (pt) 1999-04-06

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