EP2859216B1 - Soupape de régulation de pression - Google Patents

Soupape de régulation de pression Download PDF

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Publication number
EP2859216B1
EP2859216B1 EP13721721.2A EP13721721A EP2859216B1 EP 2859216 B1 EP2859216 B1 EP 2859216B1 EP 13721721 A EP13721721 A EP 13721721A EP 2859216 B1 EP2859216 B1 EP 2859216B1
Authority
EP
European Patent Office
Prior art keywords
opening
armature
pressure
armature plate
regulating valve
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
EP13721721.2A
Other languages
German (de)
English (en)
Other versions
EP2859216A1 (fr
Inventor
Pierre-Marie Rochas
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 EP2859216A1 publication Critical patent/EP2859216A1/fr
Application granted granted Critical
Publication of EP2859216B1 publication Critical patent/EP2859216B1/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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0073—Pressure balanced valves
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/023—Means for varying pressure in common rails
    • F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure
    • F02M63/025—Means for varying pressure in common rails by bleeding fuel pressure from the common rail
    • 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
    • F02M2200/07—Fuel-injection apparatus having means for avoiding sticking of valve or armature, e.g. preventing hydraulic or magnetic sticking of parts

Definitions

  • the invention relates to a pressure regulating valve according to the preamble of claim 1.
  • a pressure control valve in which at standstill of the internal combustion engine, the pressure control valve is open, that is, that a connection from the high pressure accumulator is released in a low pressure line from a closing element.
  • the pressure regulating valve has a magnetic actuator with a magnetic core and a magnetic tanker, the magnetic actuator being energized to close the closing element, in which a magnetic armature places the closing element in its valve seat.
  • a spring element is provided, which moves the magnet armature in the opening direction against the magnetic force of the magnetic actuator, whereby the closing element lifts off from the valve seat and a hydraulic return connection between the high pressure accumulator and the low pressure line is released.
  • the magnet armature has an armature plate, which is arranged in an armature space formed above the magnetic core.
  • a magnetic coil is accommodated with dimensionally stablemaschineieriten, wherein the Victorier202e have at the magnetic core end face perpendicular in the direction of the armature space.
  • the pressure control valve according to the invention with the characterizing features of the claim has the advantage that a better flow for the pressure compensation is created by the formation of a radial extension of the further implementation in the residual air gap.
  • the further implementation in the residual air gap disk manufacturing technology is easy to manufacture and leads to no significant additional manufacturing costs in the production of the pressure control valve.
  • the pressure compensation channel ensures that pressure fluctuations in the return line have no effect on the armature and that during the opening phase of the closing element, an attenuation of the armature is achieved.
  • the radial extension forms in the residual air gap disk a flow channel which extends substantially from the opening of the pressure equalization channel up to the passage formed on the anchor plate. Conveniently, the radial extension covers the opening, so that the opening of the pressure equalization channel opens into the extension.
  • the radial extension expediently has a slot-shaped form.
  • the slot shape of the radial extension is designed with a substantially constant width, wherein the width of the slot is formed by the diameter of the further implementation.
  • the slot shape of the radial extension is designed with a decreasing width, wherein the width tapers from the diameter of the further passage to the opening at least approximately to the diameter of the opening.
  • the opening of the pressure equalization channel is seconded as close as possible to the bushing.
  • the opening lies on a line that intersects the center of the residual air gap disk and the center of the further feedthrough.
  • FIG. 1 illustrated pressure control valve is inserted into a housing 21 of a high-pressure accumulator chamber 22 of a fuel injection device of an internal combustion engine.
  • the pressure regulating valve has a solenoid actuator 10 and a valve element 11, wherein the solenoid actuator 10 actuates the valve element 11.
  • the solenoid actuator 10 is arranged in a valve housing 12, which has a piston guide 13, a valve piece receptacle 14 and a connection-side receptacle 15.
  • the valve element 11 comprises a valve piston 16 with a closing element 17 in the form of a ball.
  • valve piece 18 is formed with a valve seat 19 for the closing element 17, the closing element 17 acting on the valve seat 19.
  • the valve member 18 defines a spacer ring via a valve chamber 23 into which a throttle bore 25 leads, which connects the valve chamber 23 with the high-pressure accumulator chamber 22 when the closing element 17 is open.
  • the valve chamber 23 continue to open, for example, two lateral hydraulic connections 26 which are connected to a low pressure line 27, which in turn lead to a return system.
  • the magnetic actuator 10 comprises a magnetic core 30 with a magnetic coil 32 and a magnet armature 33, the magnetic coil 32 acting on the armature 33 via the magnetic core 30.
  • the armature 33 has an anchor plate 34 and an anchor bolt 35, wherein the anchor bolt 35 is fixedly connected to the anchor plate 34.
  • the anchor bolt 35 simultaneously forms the valve piston 16, so that the armature 33 acts on the closing element 17 by means of the anchor bolt 35.
  • the anchor bolt 35 is guided axially displaceably in the piston guide 13, wherein the piston guide 13 is guided axially through the valve housing 12.
  • the magnetic core 30 has, facing the armature plate 34, a magnetic core end face 31, which is also called a pole face.
  • An armature surface 36 is formed on the armature plate 34, wherein the armature surface 36 forms the underside or the lower front side of the armature plate 34.
  • a residual air gap disc 50 is arranged between the magnetic core 30 and the anchor plate 34.
  • a spring chamber 28 is further introduced to the magnetic core end face 31, in which a compression spring 29 is arranged, which acts in the opening direction on the magenta tank 33.
  • a cover 40 is used hydraulically tight.
  • the end cover 40 surrounds the armature plate 34 of the armature 33 and forms around the armature plate 34 around an armature space 44 from.
  • the anchor plate 34 is arranged axially movable.
  • the magnetic coil 30 is for electrical contacting with a first dimensionally stablemaschineierloch 41 a and a second dimensionally stablemaschineierloch 41b carried out, which lead out substantially perpendicularly from the magnetic core end face 34 and are each surrounded by an insulating sleeve 42a, 42b.
  • the armature plate 32 has a first passage 43a for the continuation of the first contact pin 41a and a second passage 43b for the continuation of the second contact pin 41b.
  • the passages 43a, 43b are designed such that a gap 45a, 45b is formed between the insulating sleeves 42a and 42b and the passages 43a, 43b. The function of the gap 45a, 45b will be discussed later.
  • the contacting pins 41a, 41b are guided by means of the insulating sleeves 42a, 42b into an electrically insulating encapsulation 46 arranged above the end cap 40, where the contacting pins 41a, 41b are electrically contacted. For tight reception of the contact pins 41a, 41b, these are enclosed on the end faces of the insulating sleeves 42a, 42b each with an O-ring 47 in the end cover 40.
  • valve space 23 and the armature space 44 are hydraulically connected to each other via a pressure equalization channel 60.
  • the pressure equalization channel 60 opens at the magnetic core end face 31 with an opening 61 into the armature space 44.
  • the gaps 45a, 45b formed on the armature plate 34 pass between the insulating sleeves 42a and 42b and the passages 43a, 43b as a passage used by fuel for pressure equalization.
  • at least the passages 43b located in the vicinity of the opening 61 may have a larger diameter or a widening.
  • a transverse flow channel 56 is formed, which ensures a hydraulic connection between the opening 61 and the gap 45b. It is not necessary that the radial extension 54 extends to the spring chamber space 28.
  • the shortest possible radial extent of the flow channel 56 is achieved if the opening 61 of the pressure compensation channel 60 to be arranged in the vicinity of one of the passages 43 b.
  • the easiest way to choose the position is by the opening 61 in accordance with FIGS. 2 and 3 is aligned on a line 48 which intersects the center of the residual air gap disc 50 and the center of the further passage 53b.
  • the proximity of the opening 61 to the insulating sleeve 42a, 42b is limited, however, because the pressure equalizing channel 60 can not be passed through an annular magnetic coil receptacle 38 in which the magnetic coil 32 is molded with an insulating compound.
  • the extension 54 is formed by a slot shape with a constant width, wherein the width of the slot is formed by the diameter of the further passage 53b.
  • the extension 54 is formed by a slot shape with a decreasing width to the opening 61, which tapers from the diameter of the further passage 53b to the opening 61 substantially to the diameter of the opening 61.

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)

Claims (6)

  1. Soupape de régulation de la pression pour un accumulateur haute pression (22), en particulier pour un dispositif d'injection d'un moteur à combustion interne, comprenant un actionneur magnétique (10) qui présente un noyau magnétique (30) avec des broches de contact (41a, 41b) et un induit magnétique (33) avec une plaque d'induit (34), les broches de contact (41a, 41b) faisant saillie depuis une face frontale du noyau magnétique (31) et venant en prise à travers des passages (43a, 43b) réalisés dans la plaque d'induit (34), la plaque d'induit (34) étant disposée de manière déplaçable dans un espace d'induit (44) qui est connecté hydrauliquement par le biais d'un canal d'équilibrage de la pression (60) à une chambre de soupape (23) raccordée à une basse pression, le canal d'équilibrage de la pression (60) présentant, au niveau de la surface frontale du noyau magnétique (31), une ouverture (61) par laquelle le canal d'équilibrage de la pression (60) débouche dans l'espace d'induit (44), un passage pour le carburant depuis un côté frontal de la plaque d'induit (34) jusqu'à l'autre côté frontal de la plaque d'induit (34) étant prévu pour l'équilibrage de la pression, lequel est formé par au moins l'un des passages (43a, 43b) dans la plaque d'induit (34), et une rondelle de fente d'air résiduel (50) étant disposée entre le noyau magnétique (30) et la plaque d'induit (43), laquelle présente, de manière correspondant aux passages (43a, 43b), d'autres passages (53a, 53b) pour les broches de contact (41a, 41b), caractérisée en ce que le passage supplémentaire (53b) situé à proximité de l'ouverture (61) dans la rondelle de fente d'air résiduel (50) présente un élargissement radial (54) s'étendant dans la direction de l'ouverture (61).
  2. Soupape de régulation de la pression selon la revendication 1, caractérisée en ce que l'élargissement radial (54) constitue un canal d'écoulement (56) qui s'étend essentiellement depuis l'ouverture (61) jusqu'au passage (43b) réalisé au niveau de la plaque d'induit (34).
  3. Soupape de régulation de la pression selon la revendication 1 ou 2, caractérisée en ce que l'élargissement radial (54) recouvre l'ouverture (61) de telle sorte que l'ouverture (61) débouche dans l'élargissement (54).
  4. Soupape de régulation de la pression selon la revendication 3, caractérisée en ce que l'élargissement radial (54) présente une forme de trou oblong avec une largeur essentiellement constante, la largeur de la forme de trou oblong étant formée par le diamètre du passage supplémentaire (53b).
  5. Soupape de régulation de la pression selon la revendication 3, caractérisée en ce que l'élargissement radial (54) présente une forme de trou oblong avec une largeur diminuant, la largeur diminuant depuis le diamètre du passage supplémentaire (53b) jusqu'à l'ouverture (61) au moins approximativement jusqu'au diamètre de l'ouverture (61).
  6. Soupape de régulation de la pression selon l'une quelconque des revendications 1 à 5, caractérisée en ce que l'ouverture (61) est située sur une droite (48) qui coupe le centre de la rondelle de fente d'air résiduel (50) et le centre du passage supplémentaire (53b).
EP13721721.2A 2012-06-08 2013-05-07 Soupape de régulation de pression Not-in-force EP2859216B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1255351A FR2991727B1 (fr) 2012-06-08 2012-06-08 Soupape de regulation de pression d'accumulateur haute pression de carburant
PCT/EP2013/059518 WO2013182366A1 (fr) 2012-06-08 2013-05-07 Soupape de régulation de pression

Publications (2)

Publication Number Publication Date
EP2859216A1 EP2859216A1 (fr) 2015-04-15
EP2859216B1 true EP2859216B1 (fr) 2017-02-01

Family

ID=46963836

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13721721.2A Not-in-force EP2859216B1 (fr) 2012-06-08 2013-05-07 Soupape de régulation de pression

Country Status (7)

Country Link
US (1) US9410522B2 (fr)
EP (1) EP2859216B1 (fr)
JP (1) JP5989955B2 (fr)
CN (1) CN104334868B (fr)
FR (1) FR2991727B1 (fr)
IN (1) IN2014DN10005A (fr)
WO (1) WO2013182366A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3061935A1 (fr) * 2017-01-18 2018-07-20 Robert Bosch Gmbh Regulateur de pression pour une rampe commune d'une installation d'injection haute pression
DE102017204834B4 (de) 2017-03-22 2021-11-18 Zf Friedrichshafen Ag Elektromagnetische Betätigungsvorrichtung für ein Schaltelement
US11466652B2 (en) * 2017-06-14 2022-10-11 Cummins Inc. Fuel injector having a self-contained replaceable pilot valve assembly
WO2023133034A1 (fr) * 2022-01-05 2023-07-13 Cummins Inc. Injecteur de carburant, joint d'aiguille et système d'injecteur de carburant

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Also Published As

Publication number Publication date
CN104334868B (zh) 2017-03-22
FR2991727B1 (fr) 2014-07-04
FR2991727A1 (fr) 2013-12-13
WO2013182366A1 (fr) 2013-12-12
IN2014DN10005A (fr) 2015-08-14
JP5989955B2 (ja) 2016-09-07
EP2859216A1 (fr) 2015-04-15
CN104334868A (zh) 2015-02-04
JP2015522742A (ja) 2015-08-06
US9410522B2 (en) 2016-08-09
US20150152827A1 (en) 2015-06-04

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