EP1177376A1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant

Info

Publication number
EP1177376A1
EP1177376A1 EP00993433A EP00993433A EP1177376A1 EP 1177376 A1 EP1177376 A1 EP 1177376A1 EP 00993433 A EP00993433 A EP 00993433A EP 00993433 A EP00993433 A EP 00993433A EP 1177376 A1 EP1177376 A1 EP 1177376A1
Authority
EP
European Patent Office
Prior art keywords
valve
armature
fuel
fuel injection
flow
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Withdrawn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
EP00993433A
Other languages
German (de)
English (en)
Inventor
Uwe Liskow
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 EP1177376A1 publication Critical patent/EP1177376A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • 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
    • F02M51/0671—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 having an elongated 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00

Definitions

  • the invention is based on a fuel valve according to the preamble of the main claim. It is already known from DE 196 26 576 AI a fuel valve, in which the fuel is passed through holes in the armature. In the known embodiment, in addition to supplying the fuel, these bores serve to compensate for an undesired force component in the direction of the valve seat surface, since the direction of flow of the fuel there is opposite to this direction.
  • a disadvantage of the known design is that, although it enables a faster opening movement of the fuel injection valve, overall greater forces are required for this. The faster the opening movement is made possible, the less quickly the closing movement can take place.
  • the fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that the closing movement of the at least one fuel channel is accelerated during the closing movement of the armature by throttling the flow rate by the inert mass of the flowing fuel additionally accelerating the armature and the valve needle.
  • the armature opens, the flow valve is open and the resistance due to the restriction of the fuel flow is low. Above all, the resistance can be kept low by means of a large-diameter design of the fuel channel.
  • the flow valve throttles the fuel flow by closing as far as possible.
  • the entire inert mass of the moving fuel in front of the flow valve then exerts an additional force m on the armature and needle in the direction of the valve seat area.
  • the fuel injection valve according to the invention has the further advantage that the flow valve, which is located on the moving parts of the armature and / or valve needle, can be actuated simply by removing one from the solenoid Fuel injection valve generated magnetic field also actuated the flow valve. This is possible because the magnetic field is generated during the opening movement, but not during the closing movement. No additional electrical or hydraulic control is advantageously necessary.
  • the switching tents of the flow valve also only have the delay time which is necessary for the reduction of the field strength of the magnetic field.
  • FIG. 2A shows an axial detail section through a first exemplary embodiment of the invention
  • FIG. 2B is a partial section through the armature Fig. 2A with a strong magnetic field
  • 3A shows a partial section through an armature in accordance with a second exemplary embodiment with a weak magnetic field
  • 3B shows a partial section through the armature of the embodiment according to FIG. 3A with a strong magnetic field.
  • Fig. 1 shows a generic fuel injection valve 16 m known embodiment with electromagnetic actuation for clarification.
  • the fuel injection valve 16 has a valve seat surface 1 which is arranged on a valve seat body 2 which forms the part of a valve housing 17 of the fuel injection valve 16 on the absp ⁇ tz side, which is shown only schematically here.
  • a magnetic coil 6, the inside of which a core 7 is arranged, generates a magnetic field when the fuel injection valve 1 is opened, which attracts the armature 8 made of ferromagnetic material, which is non-positively connected to the valve needle 3, and thus lifts the valve closing body 5 from the valve seat surface 1 ,
  • Fuel channels 9, here holes, the armature 8 are provided. By suitable dimensioning of the fuel channels 9, it can be achieved that these restrict the flow of the fuel only slightly when the fuel injection valve 1 is opened. As a result, however, the closing movement of the armature 8 and the valve needle 3 is not supported by the inertia of the flowing fuel or a dynamic pressure, since even in the closing direction there is only a slight resistance to the flow of the fuel.
  • the first exemplary embodiment according to the invention shown in FIGS. 2A and 2B accordingly provides a flow valve 10 on the fuel channel 9, which during the closing movement additionally throttles the flow.
  • 2A and 2B for this purpose provides a reed valve actuated via the magnetic field.
  • 2A shows the magnetic coil 6, the core 7 as a detail in axial section and the magnetic field 11 as field lines.
  • the armature 8, drawn as a detail section and partially axially cut, is shown with a fuel channel 9 and a flow valve 10 on the outer circumference of the armature 8 educated.
  • the flow valve 10 consists of a flexible tongue 12 which forms this embodiment em actuating element 14.
  • the flexible tongue 12 can be fastened to the anchor 8 by clamping, plugging, welding, riveting, clamping or gluing.
  • the orientation of the flexible tongue 12 attached to the armature 8 is essentially parallel to the magnetic field 11.
  • the decisive factor in this embodiment is the essentially parallel orientation to the approximate course of the magnetic field 11 and the position in the magnetic field next to the armature 8. Because of the need To close the field lines in order to transmit the required tightening forces to the armature 8, there is a deflection of the field lines to the valve housing 17 of the fuel injection valve 16, since the field lines are closed via this.
  • the flexible tongue 12 of the flow valve 10 advantageously opens as soon as a magnetic field 11 is applied by the same magnetic poles being formed on the armature 8 and the flexible tongue 12, which repel each other.
  • the magnetic poles are indicated by N for the north pole and S for the south pole.
  • FIG. 2B shows the armature 8 as a detail, partially cut away, with the fuel channel 9 and the flow valve 10 with the flexible tongue 12 with a strong magnetic field 11.
  • the flexible tongue 12 is repelled by the same magnetic poles. The flow resistance is then low and the fuel flow is hardly throttled.
  • the magnetic field 11 goes back to the lowest field strength in a short time, and the flexible tongue 12 takes the position as Fig. 2A em.
  • the flow is greatly reduced, and the armature 8 is entrained by the inertia or the dynamic pressure of the moving fuel in the direction of the sealing seat 4.
  • FIGS. 3A and 3B each show an axial cut of an armature 8.
  • the flow valve 10 is designed as a seat valve.
  • FIG. 3A shows the closed state of the flow valve 10.
  • the flow valve 10 comprises an actuating element 14, which in turn is designed as a flexible tongue 12, whereby a simple yet movable attachment to the armature 8 is possible. This attachment to anchor 8 can also be done here by clamping, plugging, welding, riveting, crimping or gluing.
  • the connecting element 15 is passed through a bore 18 hm.
  • FIG. 3B shows the armature 8 shown in FIG. 3A, consisting of the elements described, while a strong magnetic field 11 is present.
  • the actuating element 14 and the armature 8 are arranged essentially m row in this embodiment with respect to the magnetic field lines. This forms mutually attractive magnetic poles, which are illustrated by N and S in FIG. 3B. The magnetic poles attract each other and the actuating element 14 presses the flow valve closing body via the connecting element 15
  • the invention is not limited to the exemplary embodiments shown.
  • the actuating elements 14 or the armature 8 can be designed as permanent magnets, whereby the effect according to the invention can be further enhanced.

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)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention concerne une soupape d'injection de carburant (16) destinée à des systèmes d'injection de carburant de moteurs à combustion interne et comportant un pointeau (3). Cette soupape présente, sur un corps de siège de soupape (2), une surface de siège de soupape (1) qui coopère avec un corps de fermeture de soupape (5) pour former un siège d'étanchéité (4). Cette soupape d'injection de carburant (16) présente également une bobine d'excitation (6), un induit (8) agissant sur le pointeau (3) et au moins un canal de carburant (9) situé au niveau de l'induit (8) et/ou du pointeau (3) et servant à acheminer le carburant au siège d'étanchéité (4). Le canal de carburant (9) présente une soupape de régulation de débit (10) qui réduit davantage l'écoulement de carburant à travers le canal de carburant (9) pendant un mouvement de fermeture de l'induit (8) que pendant un mouvement d'ouverture de ce dernier. Dans un mode de réalisation de l'invention, cette soupape de régulation de débit (10) est actionnée par un champ magnétique, (11) produit par la bobine d'excitation (6), et par un élément d'actionnement (14) constitué d'un matériau ferromagnétique.
EP00993433A 1999-12-15 2000-12-14 Soupape d'injection de carburant Withdrawn EP1177376A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19960339 1999-12-15
DE19960339A DE19960339A1 (de) 1999-12-15 1999-12-15 Brennstoffeinspritzventil
PCT/DE2000/004453 WO2001044654A2 (fr) 1999-12-15 2000-12-14 Soupape d'injection de carburant

Publications (1)

Publication Number Publication Date
EP1177376A1 true EP1177376A1 (fr) 2002-02-06

Family

ID=7932661

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00993433A Withdrawn EP1177376A1 (fr) 1999-12-15 2000-12-14 Soupape d'injection de carburant

Country Status (7)

Country Link
US (1) US20020125346A1 (fr)
EP (1) EP1177376A1 (fr)
JP (1) JP2003517533A (fr)
CN (1) CN1352730A (fr)
CZ (1) CZ20012939A3 (fr)
DE (1) DE19960339A1 (fr)
WO (1) WO2001044654A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7092143B2 (en) * 2004-10-19 2006-08-15 Reflectivity, Inc Micromirror array device and a method for making the same
EP2700807A1 (fr) * 2012-08-23 2014-02-26 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
DE102014226367A1 (de) 2014-12-18 2016-06-23 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102015213216A1 (de) 2015-07-15 2017-01-19 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids
EP3362670B1 (fr) 2015-10-15 2020-02-19 Vitesco Technologies GmbH Soupape d'injection de carburant avec un dispositif anti-rebond, moteur à combustion et véhicule
GB2548375A (en) * 2016-03-16 2017-09-20 Delphi Int Operations Luxembourg Sarl Fuel injector
WO2021260014A1 (fr) * 2020-06-24 2021-12-30 Hoerbiger Wien Gmbh Soupape électromagnétique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3741880A1 (de) * 1986-12-19 1988-07-28 Volkswagen Ag Vorrichtung zur verhinderung von frischgas-rueckstroemungen im saugrohr einer brennkraftmaschine
IT1278827B1 (it) * 1995-04-28 1997-11-28 Monika Paszkowska Valvola termodinamica ad aspirazione
DE19626576A1 (de) * 1996-07-02 1998-01-08 Bosch Gmbh Robert Brennstoffeinspritzventil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0144654A2 *

Also Published As

Publication number Publication date
US20020125346A1 (en) 2002-09-12
DE19960339A1 (de) 2001-06-21
CZ20012939A3 (cs) 2002-11-13
CN1352730A (zh) 2002-06-05
WO2001044654A3 (fr) 2001-12-06
WO2001044654A2 (fr) 2001-06-21
JP2003517533A (ja) 2003-05-27

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