EP0366833A1 - Injektor mit elektromagnetischer Steuerung - Google Patents

Injektor mit elektromagnetischer Steuerung Download PDF

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Publication number
EP0366833A1
EP0366833A1 EP88118457A EP88118457A EP0366833A1 EP 0366833 A1 EP0366833 A1 EP 0366833A1 EP 88118457 A EP88118457 A EP 88118457A EP 88118457 A EP88118457 A EP 88118457A EP 0366833 A1 EP0366833 A1 EP 0366833A1
Authority
EP
European Patent Office
Prior art keywords
injector
chamber
axis
injection orifices
orifices
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.)
Granted
Application number
EP88118457A
Other languages
English (en)
French (fr)
Other versions
EP0366833B1 (de
Inventor
Mauro Forapianti
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 AG
Siemens Corp
Original Assignee
Siemens AG
Siemens 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 AG, Siemens Corp filed Critical Siemens AG
Priority to DE88118457T priority Critical patent/DE3870240D1/de
Priority to EP88118457A priority patent/EP0366833B1/de
Publication of EP0366833A1 publication Critical patent/EP0366833A1/de
Application granted granted Critical
Publication of EP0366833B1 publication Critical patent/EP0366833B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F02M61/1853—Orifice plates
    • 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
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0667—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature acting as a valve or having a short valve body attached 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/08—Injectors peculiar thereto with means directly operating the valve needle specially for low-pressure fuel-injection
    • 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
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size

Definitions

  • This invention relates to an electromagnetically operated injector for use in electronically controlled fuel injection systems, of the single or multiple injector type, for internal combustion engines.
  • This type of injector characteristically comprises a casing, a fuel inlet in said casing, fuel discharge elements complete with at least partly magnetic valve means for controlling the fuel flow through said discharge elements, and a solenoid con­tained in said casing and which, when energized, causes said valve means to open in opposition to elastic means, and thus allowing the fuel to flow through said discharge elements.
  • One of the main characteristics to be considered in designing this type of electromagnetic injector is the shape of the jet coming out of the injection nozzle.
  • an atomized conical spray can be desirable to facilitate the mixing of the gasoline with the air drawn in by the engine.
  • an orifice director plate with several orifice passages is provided downstream of the valve seat for controlling the pattern of the fuel spray.
  • Each of said orifice passages directs a stream of fuel towards a central axis, so that they at least partly impinge upon each other so as to produce the desired atomized spray pattern.
  • the object of the present invention is therefore to obtain, in a simple manner and under low production costs, an electromag­netic injector which creates an atomized conical jet and which obviates the drawbacks of the known art.
  • an electromagnetic conical jet injector which:
  • an injector according to the pre­sent invention has the following advantages:
  • an electromagnetic fuel injector in accordance with this invention, includes an external body 1 formed from magnetizable material which houses an electric coil 2, wound on a spool 3, which surrounds a cylindrical magnetic core 4, also formed from magnetizable material.
  • a bushing 5 is mounted, made of non-­magnetizable material, which acts as the longitudinal guide to a cup-shaped mobile armature 6 which, together with the body 1 and the core 4, forms the magnetic circuit.
  • the injector includes furthermore a series of O-rings, a spacer 16, which adjusts the lift to the armature 6, and an inlet fil­ter 17.
  • FIG. 2 describes in more details the area of the injector which is subject to this invention.
  • a second chamber 22 can be found on the bottom side of the nozzle body 8, concentric to the injector's axis, opposed to chamber 20 but having largely bigger dimensions, the one or more injection orifices 21 terminating in such chamber.
  • Figure 3 shows, as an axample, a different embodiment of the injector subject to this invention, where two injection orifi­ces are coplanar and parallel with the injector's axis.
  • Figure 4 shows, an embodiment where only one orifice is present and its axis converges with the coplanar injector's axis.
  • the injector can, therefore, be considered "a central discharge type".

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)
EP88118457A 1988-11-04 1988-11-04 Injektor mit elektromagnetischer Steuerung Expired - Lifetime EP0366833B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE88118457T DE3870240D1 (en) 1988-11-04 1988-11-04 Electromagnetically-operated fuel injector for IC engine
EP88118457A EP0366833B1 (de) 1988-11-04 1988-11-04 Injektor mit elektromagnetischer Steuerung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88118457A EP0366833B1 (de) 1988-11-04 1988-11-04 Injektor mit elektromagnetischer Steuerung

Publications (2)

Publication Number Publication Date
EP0366833A1 true EP0366833A1 (de) 1990-05-09
EP0366833B1 EP0366833B1 (de) 1992-04-15

Family

ID=8199527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88118457A Expired - Lifetime EP0366833B1 (de) 1988-11-04 1988-11-04 Injektor mit elektromagnetischer Steuerung

Country Status (2)

Country Link
EP (1) EP0366833B1 (de)
DE (1) DE3870240D1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011143842A1 (zh) * 2010-05-21 2011-11-24 北京亚新科天纬油泵油嘴股份有限公司 一种应用于共轨喷油器的电磁阀
CN105658950A (zh) * 2013-11-11 2016-06-08 恩普乐斯股份有限公司 燃料喷射装置用喷嘴板的安装构造
WO2019101395A1 (de) * 2017-11-21 2019-05-31 Robert Bosch Gmbh Dosierventil und strahlpumpeneinheit zum steuern eines gasförmigen mediums

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4221185A1 (de) * 1992-06-27 1994-01-05 Bosch Gmbh Robert Spritzlochscheibe für ein Ventil und Verfahren zur Herstellung
JP2000087826A (ja) * 1998-09-14 2000-03-28 Toyota Motor Corp 燃料噴射弁およびその製造方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2382151A (en) * 1940-12-11 1945-08-14 Jr William Harper Fuel injector
US4101074A (en) * 1976-06-17 1978-07-18 The Bendix Corporation Fuel inlet assembly for a fuel injection valve
FR2399551A1 (fr) * 1977-08-04 1979-03-02 Alfa Romeo Spa Injecteur d'essence pour moteurs a explosion
GB2147949A (en) * 1983-10-14 1985-05-22 Lucas Ind Plc Fuel injector for an I.C. engine
US4699323A (en) * 1986-04-24 1987-10-13 General Motors Corporation Dual spray cone electromagnetic fuel injector
GB2190428A (en) * 1986-05-16 1987-11-18 Lucas Ind Plc I.c. engine gasoline injector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2382151A (en) * 1940-12-11 1945-08-14 Jr William Harper Fuel injector
US4101074A (en) * 1976-06-17 1978-07-18 The Bendix Corporation Fuel inlet assembly for a fuel injection valve
FR2399551A1 (fr) * 1977-08-04 1979-03-02 Alfa Romeo Spa Injecteur d'essence pour moteurs a explosion
GB2147949A (en) * 1983-10-14 1985-05-22 Lucas Ind Plc Fuel injector for an I.C. engine
US4699323A (en) * 1986-04-24 1987-10-13 General Motors Corporation Dual spray cone electromagnetic fuel injector
GB2190428A (en) * 1986-05-16 1987-11-18 Lucas Ind Plc I.c. engine gasoline injector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011143842A1 (zh) * 2010-05-21 2011-11-24 北京亚新科天纬油泵油嘴股份有限公司 一种应用于共轨喷油器的电磁阀
CN105658950A (zh) * 2013-11-11 2016-06-08 恩普乐斯股份有限公司 燃料喷射装置用喷嘴板的安装构造
CN105658950B (zh) * 2013-11-11 2018-11-06 恩普乐斯股份有限公司 燃料喷射装置用喷嘴板的安装构造
WO2019101395A1 (de) * 2017-11-21 2019-05-31 Robert Bosch Gmbh Dosierventil und strahlpumpeneinheit zum steuern eines gasförmigen mediums
CN111373341A (zh) * 2017-11-21 2020-07-03 罗伯特·博世有限公司 用于控制气态介质的配量阀和喷射泵单元

Also Published As

Publication number Publication date
DE3870240D1 (en) 1992-05-21
EP0366833B1 (de) 1992-04-15

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