EP1115969A1 - Soupape pour introduire de maniere dosee du carburant volatil dans le canal d'aspiration d'un moteur a combustion interne - Google Patents

Soupape pour introduire de maniere dosee du carburant volatil dans le canal d'aspiration d'un moteur a combustion interne

Info

Publication number
EP1115969A1
EP1115969A1 EP00951247A EP00951247A EP1115969A1 EP 1115969 A1 EP1115969 A1 EP 1115969A1 EP 00951247 A EP00951247 A EP 00951247A EP 00951247 A EP00951247 A EP 00951247A EP 1115969 A1 EP1115969 A1 EP 1115969A1
Authority
EP
European Patent Office
Prior art keywords
valve
closing member
opening
seat body
valve closing
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
EP00951247A
Other languages
German (de)
English (en)
Other versions
EP1115969B1 (fr
Inventor
Wolfgang Schulz
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 EP1115969A1 publication Critical patent/EP1115969A1/fr
Application granted granted Critical
Publication of EP1115969B1 publication Critical patent/EP1115969B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
    • 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
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/166—Selection of particular materials
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/12—Other methods of operation
    • F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M2025/0845—Electromagnetic valves

Definitions

  • the invention relates to a valve for the metered introduction of fuel volatilized from the fuel tank of an internal combustion engine into an intake duct of the internal combustion engine according to the preamble of claim 1.
  • Such a valve is known for example from DE 42 44 113 AI.
  • a disturbing noise during operation of the valve is considerably reduced by at least one damper element.
  • this valve has an improved wear resistance, since a collision of metallic parts moving relative to each other is prevented or at least weakened.
  • the invention is therefore based on the object of developing a generic valve for the metered introduction of fuel volatilized from the fuel tank of an internal combustion engine into an intake duct of the internal combustion engine such that a further minimization of the operating noise is possible even with an increased air throughput through the valve.
  • valve for the metered introduction of fuel volatilized from the fuel tank of an internal combustion engine into an intake duct of the internal combustion engine of the type described in the introduction by the features of the main claim.
  • the at least one valve opening in the valve closing member is opposite at least one further opening which is of essentially the same shape as that Valve opening and larger than this and is covered by the damping element on its side facing the valve seat body, the damping element has on its sealing surface arranged in the region of the valve opening an elastic contact surface, which the impact of the valve closing member. dampens on the sealing surface of the valve opening in the valve seat body. This enables a particularly effective minimization of the operating noise.
  • the end face of the valve closing member facing the valve seat body is at least partially covered by the damping element. This enables the damping element to be fastened to the valve closing member over a large area and adheres well.
  • the damping element advantageously projects through the at least one further opening and forms a cusp-shaped sealing surface on the second end facing the electromagnet, which at least partially follows the boundary line of the at least one further opening arranged in it.
  • This arrangement not only enables the damping element to be attached in a particularly simple manner. the valve closing member.
  • This arrangement also makes it possible, in particular, for the damping element to be arranged on both end faces of the valve closing element and thus for the valve closing element to come into metallic contact with the valve seat body or with a arranged on the electromagnet sealing surface at
  • the damping element is preferably made of an elastomeric material. It can be made of rubber, for example, which is vulcanized onto the end face of the valve closing member facing the valve seat body and in the at least one further opening and also performs a sealing function in addition to the damping function.
  • FIG. 1 shows sectional views of a valve making use of the invention in mutually perpendicular directions
  • Fig. 2 is a view of a valve closing member used in the valve shown in Fig. 1;
  • Fig. 3 is a bottom view of the valve closing member shown in Fig. 2;
  • FIG. 4 shows a sectional illustration of the valve closing element shown in FIG. 2 and FIG
  • FIG. 5 shows an enlarged section designated V in FIG. 4. Description of an exemplary embodiment
  • a valve for the metered admixture of fuel volatilized from the fuel tank of a mixture-compressing, spark-ignited internal combustion engine to a fuel supplied to the internal combustion engine via an intake duct or, in the case of direct petrol injection, directly into a cylinder of the internal combustion engine, shown in FIG. 1 and referred to below as the tank ventilation valve, is part of one Fuel evaporation retention system, not shown, of an internal combustion engine.
  • the structure and function of such fuel evaporation retention systems can be found, for example, in "Bosch Technical Instruction Motor Management Motronic", 2nd Edition, August 1993, pages 48 and 49.
  • a tank ventilation valve and its function can be seen, for example, from DE 42 44 113 AI and from DE 196 11 886 AI, to which reference is made here.
  • the tank ventilation valve has a two-part valve housing 10 with a cup-shaped housing part 101 and a cap-shaped housing part 102 that closes the latter.
  • the pot-shaped housing part 101 carries an inflow connection 11 for connection to a ventilation connection of the fuel tank or to a storage tank for the volatilized fuel which is connected to it and filled with activated carbon.
  • the housing part 102 carries an outflow connection 12 for connection to the intake pipe of the internal combustion engine and an electrical cal contact element, for example a socket 80 for connecting an electrical line for an electromagnet 13.
  • the inlet connection 11 and the outlet connection 12 are each arranged essentially flush with one another axially in the housing parts 101, 102.
  • the electromagnet 13 is arranged in the interior of the pot-shaped housing part 101.
  • the electromagnet 13 has a pot-shaped magnet housing 14 with a coaxial, hollow-cylindrical magnet core 15 penetrating the bottom of the pot and a cylindrical excitation coil 16 which is seated on a coil carrier 17 which surrounds the magnet core 15 in the magnet housing 14.
  • an outwardly projecting threaded connector 18 is formed with an internal thread, which is screwed to an external thread section of the hollow cylindrical magnetic core 15.
  • the magnetic core 15 can thus be axially displaced by rotating it in the magnet housing 14 for adjustment purposes.
  • the magnetic core 15 is aligned with the inflow nozzle 11, so that the volatilized fuel flowing in here flows directly through the magnetic core 15.
  • the edge of the magnet housing 14 is angled outwards to form an annular support flange 20, on which a valve seat body 22, which forms the yoke or annular gap yoke of the electromagnet 13, lies and which covers the magnet housing 14.
  • the valve seat body 22 is mounted in a damped manner in the housing part 101 and the housing part 102 via damping elements 53, which consist for example of rubber, and is damped by damping elements 52, 53, which enclose it at the edge, and the cap-shaped housing part 102 is pressed onto the support flange 20.
  • damping elements 52, 53 also fulfill a sealing function.
  • valve openings 25 for example in the form of a circular segment, are arranged, which are arranged by means of a valve seat body 22 forming the yoke and the magnetic core 15.
  • Valve closing member 27 are closable.
  • an axial passage opening 28 is provided centrally in the valve closing member 27 coaxial with the hollow cylindrical magnetic core 15, through which volatilized fuel coming from the inflow nozzle 11 can reach the outflow nozzle 12 when the valve openings 25 of the valve seat body 22 are open ,
  • valve closing member 27 made of magnetically conductive material is acted upon by a restoring means in the form of a valve closing spring 31 in the valve closing direction in the direction of the outflow connector 12.
  • the valve closing spring 31 is supported on the one hand on the valve closing member 27 and on the other hand on a sleeve-shaped end of the magnetic core 15.
  • FIGS. 2 to 5 there are two further openings 29 in the valve closing member 27 arranged, which essentially have the elongated, partially annular shape of the valve openings 25 formed in the valve seat body 22, but are larger than these.
  • an elastomeric damping element is vulcanized, for example in the form of a sealing rubber 60, which extends through the further openings 29 and which on the second end face of the valve closing member 27 facing the electromagnet 15 is raised - Kerför ig formed sealing surface 62 which at least partially follows a boundary line of the further openings 29.
  • the protrusion of the bump-shaped sealing surface 62 over the second end face of the valve closing member 27 is designed such that the magnetic force after the valve closing member 27 has impinged on the magnetic core 15 "overpresses" the bump-shaped sealing surface 62 and the valve closing member 27 is in metallic contact comes to rest on the magnetic core 15.
  • the damping element 60 which is made, for example, of rubber, can be very thin-walled in the exemplary embodiment described above, which is necessary when it is exposed to fuel in order to avoid excessive swelling in sealing operation.

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)
  • Magnetically Actuated Valves (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne une soupape permettant d'introduire du carburant volatil provenant du réservoir de carburant d'un moteur à combustion interne, dans le canal d'aspiration d'un moteur à combustion. Cette soupape comprend un élément de fermeture (27) disposé entre le corps de siège de soupape (22) et le noyau magnétique (15) d'un électro-aimant (13). Ledit élément de fermeture présente au moins une ouverture de passage (28) et est sollicité dans le sens de fermeture de la soupape par un élément de rappel (31) et peut être actionné dans le sens d'ouverture de la soupape par un électro-aimant (13). Ladite soupape comprend également un élément amortisseur (60) monté sur son élément de fermeture (27), qui traverse et fait saillie de l'élément de fermeture (27) dans le sens axial. Cette soupape se caractérise en ce qu'une ouverture (29) pratiquée dans l'élément de fermeture (27) fait face à l'ouverture pratiquée dans la soupape (25) (au moins au nombre de une) pratiquée dans le corps du siège de soupape (22). Cette ouverture (29) est sensiblement de la même forme que l'ouverture pratiquée dans la soupape (25) (au moins au nombre de une), tout en étant plus grande et est recouverte sur sa face tournée vers le corps de siège de soupape (22) par l'élément amortisseur (60).
EP00951247A 1999-07-27 2000-06-24 Soupape pour introduire de maniere dosee du carburant volatil dans le canal d'aspiration d'un moteur a combustion interne Expired - Lifetime EP1115969B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19935261A DE19935261A1 (de) 1999-07-27 1999-07-27 Ventil zum dosierten Einleiten von verflüchtigtem Brennstoff in einen Ansaugkanal einer Brennkraftmaschine
DE19935261 1999-07-27
PCT/DE2000/002057 WO2001007775A1 (fr) 1999-07-27 2000-06-24 Soupape pour introduire de maniere dosee du carburant volatil dans le canal d'aspiration d'un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1115969A1 true EP1115969A1 (fr) 2001-07-18
EP1115969B1 EP1115969B1 (fr) 2004-05-19

Family

ID=7916226

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00951247A Expired - Lifetime EP1115969B1 (fr) 1999-07-27 2000-06-24 Soupape pour introduire de maniere dosee du carburant volatil dans le canal d'aspiration d'un moteur a combustion interne

Country Status (5)

Country Link
US (1) US6530558B1 (fr)
EP (1) EP1115969B1 (fr)
JP (1) JP2003505643A (fr)
DE (2) DE19935261A1 (fr)
WO (1) WO2001007775A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10148874C2 (de) 2001-10-04 2003-12-24 Siemens Ag Düseneinrichtung, insbesondere zur Kraftstoffeinspritzung
GB0216115D0 (en) * 2002-07-11 2002-08-21 Parker Hannifin U K Ltd Self-venting solenoid drain valves
DE102004033280A1 (de) * 2004-07-09 2006-02-02 Robert Bosch Gmbh Einspritzventil zur Kraftstoffeinspritzung
US20080000456A1 (en) * 2006-06-30 2008-01-03 Siemens Canada Limited Cost-optimized canister purge valve
JP2008075827A (ja) * 2006-09-25 2008-04-03 Denso Corp 流体制御弁
US8261741B2 (en) * 2007-11-05 2012-09-11 Resmed Limited Method and apparatus for backspill prevention
JP6427071B2 (ja) * 2015-06-10 2018-11-21 愛三工業株式会社 燃料供給装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4023044A1 (de) * 1990-07-20 1992-01-23 Bosch Gmbh Robert Ventil zum dosierten zumischen von verfluechtigtem kraftstoff zum kraftstoffluftgemisch einer brennkraftmaschine
US5374029A (en) * 1992-06-26 1994-12-20 Wright Components, Inc. Solenoid flow control valve and frictionless plunger assembly
DE4244113A1 (de) * 1992-12-24 1994-06-30 Bosch Gmbh Robert Ventil zum dosierten Einleiten von verflüchtigtem Brennstoff in einen Ansaugkanal einer Brennkraftmaschine
US5467961A (en) * 1993-05-06 1995-11-21 Firma Carl Freudenberg Electromagnetically actuated valve
DE4322564A1 (de) * 1993-07-07 1995-01-12 Pierburg Gmbh Elektromagnetisches Umschaltventil
DE19721562A1 (de) * 1997-05-23 1998-11-26 Bosch Gmbh Robert Ventil zum dosierten Einleiten von verflüchtigtem Brennstoff
DE19740580C2 (de) * 1997-09-16 2001-06-13 Pierburg Ag Elektromagnetisches Schaltventil
DE19839476A1 (de) * 1998-08-29 2000-03-02 Bosch Gmbh Robert Ventil zum dosierten Einleiten von verflüchtigtem Brennstoff
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0107775A1 *

Also Published As

Publication number Publication date
DE19935261A9 (de) 2005-11-03
EP1115969B1 (fr) 2004-05-19
DE19935261A1 (de) 2001-02-01
US6530558B1 (en) 2003-03-11
DE50006479D1 (de) 2004-06-24
JP2003505643A (ja) 2003-02-12
WO2001007775A1 (fr) 2001-02-01

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