EP2507498A1 - Ensemble soupape pour moteur à combustion interne - Google Patents

Ensemble soupape pour moteur à combustion interne

Info

Publication number
EP2507498A1
EP2507498A1 EP10781694A EP10781694A EP2507498A1 EP 2507498 A1 EP2507498 A1 EP 2507498A1 EP 10781694 A EP10781694 A EP 10781694A EP 10781694 A EP10781694 A EP 10781694A EP 2507498 A1 EP2507498 A1 EP 2507498A1
Authority
EP
European Patent Office
Prior art keywords
gear
internal combustion
combustion engine
engine according
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.)
Granted
Application number
EP10781694A
Other languages
German (de)
English (en)
Other versions
EP2507498B1 (fr
Inventor
Martin Nowak
Andreas Köster
Andres Tönnesmann
Heinrich Dismon
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.)
Pierburg GmbH
Original Assignee
Pierburg 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 Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP2507498A1 publication Critical patent/EP2507498A1/fr
Application granted granted Critical
Publication of EP2507498B1 publication Critical patent/EP2507498B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/67—Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
    • F02M26/54—Rotary actuators, e.g. step motors

Definitions

  • Such valve devices are used in particular as exhaust gas recirculation valves.
  • a gear unit is rotated, which has a Kopp! Ungse! Ement, via which the rotational movement of the gears is converted into a translational movement of the valve stem.
  • an exhaust gas flow which is attributed from the exhaust manifold to the intake manifold for the reduction of pollutant emissions, regulated over a wide range.
  • the electric motor driven valves with the intermediate gearbox have a high Regeigenaumaschinetechnik. Exhaust gas recirculation valves are, however, exposed in the exhaust area of a high thermal load and progressive pollution.
  • EP 0 887 540 B1 discloses an exhaust gas recirculation valve in which a gear transmission is driven via an electric motor.
  • the ripped transmission gear has a guide opening into which a bolt projects, which is fixedly connected to the valve rod and extending perpendicular to this.
  • the bolt moves in the guide opening, wherein a guided by the housing translational movement of a valve actuating rod follows. Ingress of blow-by gases into the gear compartment is prevented by dividing the valve rod into two axially superimposed sections, which are connected to one another via a fastening member, wherein a membrane is arranged on the outside of the fastening member.
  • the housing consists of a cup-shaped motor housing part, a gear housing part, in in which the gear box is formed and in which the axes of rotation of the gears are fixed, and a valve housing part in which the inlet and the outlet are formed with the valve seat.
  • a particularly advantageous form of transmission results when using a spur gear, wherein the gear unit consists of a Antriebritzei, which meshes with the larger gear of a double gear whose smaller gear meshes with the output gear, soft is designed as a gear segment.
  • Such a transmission requires only a small space and is easy to install with a large translation.
  • valve device which is largely insensitive to contamination in particular by blow-by gases and thermal stress and at the same time with high Steugenautechnik iediglieh has a low space requirement and thus is inexpensive to produce.
  • valve device An embodiment of a valve device according to the invention is shown in the figures and will be described below.
  • Figure 1 shows a side view of a valve device according to the invention in a sectional Darsander.
  • Figure 2 shows a perspective view of the valve assembly.
  • Figure 3 shows a perspective view of the gear unit and the drive unit of the valve device according to the invention of Figure 1, wherein parts of the gear unit are shown as an exploded view.
  • the valve device shown in Figure 1 consists of a multi-part housing 2, which is composed of a cup-shaped motor housing part 4, a gear housing part 6 and a valve housing part 8.
  • the gear housing part 6 has on its first side an annular projection 10, on the outer circumference with Eiseniage a seal 12, the motor housing part 4 is fixed and the inner periphery forms a receptacle 14, in which a serving as a drive unit 16 electric motor is inserted.
  • the electric motor 16 is largely closed at its end facing the gear housing part 6 by an engine cap 18, so that an engine compartment 20 is separated from the gear housing part 6. Only a drive shaft 22, on which a drive pinion 24 of a gear unit 26 is arranged rotationally fixed and two motor connection contacts, not shown, protrude through corresponding openings of the motor cap 18th
  • the gear unit 26 is arranged and stored in a gear chamber 28. It consists of the drive pinion 24, which meshes with a larger gear 30 of a Doppeiyakrades 32, the smaller gear 34 meshes with an output gear 36, which is designed as a gear segment, which can be seen in particular in Figure 3.
  • the double gear 32 as well as the driven gear 36 are each mounted on a pivot axis 38, 40 serving as the axle bolt, which is fixed in the gear housing part 6.
  • an axis 48 is disposed outside the axis of rotation 40, which extends parallel to the axis of rotation 40 and is moved on rotation of the output gear 36 on a circular arc about the axis of rotation 40.
  • This axle 48 can both be overmolded in the production of the driven gear 36 as well as integrally made with this or otherwise secured to the gear 36. Accordingly, the driven gear 36 simultaneously acts as an eccentric 37, so that can be dispensed with an additional Exzenterbauteil.
  • the axis 48 extends through a likewise part-circular arc-shaped opening 50 of a cover 52 which according to the invention separates the gear chamber 28 from a valve rod movement chamber 54 into which the axle 48 projects.
  • the cover 52 is formed substantially as a flat plate 56 from which outer edges 58 extend at an angle of 90 ° to the plate. These outer edges 58 abut against suitably trained izofizzen 60 of the gear housing part 6, whereby a positive attachment in the gear housing part 6 is formed without having to use additional fasteners. Further, this elongated abutment surface increases the leaktightness of the gear compartment 28, which is separated from its surroundings to the first side by the motor cap 18 and to the opposite side by the cover 52. A Connection exists only through the openings 50, through which the shafts 22 or axes 48 project from the drive or into the gear chamber 28.
  • a roller 62 is arranged on the shaft 48, which is guided in a link 64 of a coupling element 66. which in turn is firmly connected to a Ventüstange 68 of the valve device.
  • the gate 64 which can be seen in Figure 2, it may have a curved shape to represent specific required power stroke courses.
  • the valve rod 68 protrudes through a corresponding opening of the Ventiigephaseuseteils 8, in which a soft guide element 70 is arranged, via which the Ventüstange 68 is mounted so that only a pure lifting movement is possible.
  • a sealing element 72 is arranged in the valve housing part 8, which surrounds the valve rod 68 and significantly reduces a Biow-by gas flow entering the valve rod movement space 54 along the valve rod 68.
  • a shielding member 74 is arranged, which dissolves deposits on the Ventüstange 68 and also improves the seal on the valve stem 68.
  • a support member 84 is attached to the coupling element 66 beyond the coupling element 66, soft, with the valve rod 68 is moved.
  • This carrier element 84 has a ceramic insulating body 86 which extends over the cross section of the support member 84, so that a thermal separation between the optionally thermally highly loaded valve rod and the beyond the insulating body 86 arranged part of the support member 84 is formed.
  • the carrier element 84 has an opening in which a permanent magnet 88 is attached. This communicates with a non-contact sensor 90, which is encapsulated in the gear housing part 6, paralle! to the direction of movement of the support member 84 arranged next to this est.
  • the sensor 90 is connected via a punched grid 92 with a plug 94, the Anschiusspins 96 are formed by the ends of the punched grid 92. Further lines of the stamped grid 92 form motor terminals, which are plugged together with the motor contacts, so that both the control of the drive unit 16 as well as the Lügurmeidung the valve device can be done via the plug 94.
  • the stamped grid 92 is inserted and molded in the production in the injection mold of the gear housing part 6, so that a release of the electrical contacts is reliably prevented.
  • a control unit will provide a required voltage via the connection pins 96 of the plug 94 of the drive unit 16.
  • the gear unit 26 is rotated and thus the driven gear 36.
  • the axis 48 is rotated on a circular arc about the rotation axis 40, so that the roller 62 runs in the link 64.
  • valve closing body 76 is reported back on the sensor 90 by the movement of the permanent magnet 88 with the Sueiement 84 changing magnetic field in a known manner via the plug 94, so that upon reaching the required position, the drive unit 16 is turned off.
  • this valve device requires only a small space.
  • the assembly is simple, whereby the number of components has also been minimized, so that significant cost advantages are achieved with extended life.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Abstract

La présente invention concerne des ensembles soupapes comprenant une unité d'entraînement (16), un ensemble engrenage (26), un excentrique (37) pouvant être entraîné par l'intermédiaire de l'ensemble engrenage (26), et une tige de soupape mobile en translation (68) à laquelle est fixé un élément d'accouplement (66) par l'intermédiaire duquel le mouvement de l'excentrique (68) peut être converti en un mouvement de translation de la tige de soupape (68). Les ensembles soupapes connus sont sujets à l'encrassement au niveau de l'ensemble engrenage en raison des gaz de fuite. Pour pallier ce problème, l'invention propose de placer entre l'excentrique (37) et l'élément de couplage (66) un couvercle (52) constituant une séparation entre la chambre de l'ensemble engrenage (28) et la chambre de déplacement de la tige de soupape (54).
EP10781694.4A 2009-12-01 2010-11-23 Système de vanne pour moteur à combustion interne Active EP2507498B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009056251.6A DE102009056251B4 (de) 2009-12-01 2009-12-01 Ventilvorrichtung für eine Verbrennungskraftmaschine
PCT/EP2010/068019 WO2011067138A1 (fr) 2009-12-01 2010-11-23 Ensemble soupape pour moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP2507498A1 true EP2507498A1 (fr) 2012-10-10
EP2507498B1 EP2507498B1 (fr) 2013-09-25

Family

ID=43599176

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10781694.4A Active EP2507498B1 (fr) 2009-12-01 2010-11-23 Système de vanne pour moteur à combustion interne

Country Status (5)

Country Link
US (1) US9016266B2 (fr)
EP (1) EP2507498B1 (fr)
DE (1) DE102009056251B4 (fr)
ES (1) ES2440772T3 (fr)
WO (1) WO2011067138A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011004018A1 (de) * 2011-02-14 2012-08-16 Robert Bosch Gmbh Stellantrieb, Strömungsventil, Abgasturbolader
DE102014106513A1 (de) * 2014-05-09 2015-11-12 Pierburg Gmbh Abgasturbolader mit einem Waste-Gate-Ventil
DE102014106515A1 (de) 2014-05-09 2015-11-12 Pierburg Gmbh Abgasturbolader mit einem Waste-Gate-Ventil
DE102014106517A1 (de) 2014-05-09 2015-11-12 Pierburg Gmbh Abgasturbolader mit einem Waste-Gate-Ventil
FR3021819B1 (fr) 2014-06-03 2016-06-03 Mmt Sa Actionneur lineaire reversible auto commute a commande bifilaire
KR101704495B1 (ko) * 2015-09-17 2017-02-08 주식회사 현대케피코 모터실, 밸브실, 및 양측지지구조의 기어실이 일체적으로 형성된 하우징을 가지는 전자식 egr밸브
FR3079983B1 (fr) 2018-04-09 2020-04-10 Moving Magnet Technologies Procede de commande d’un moteur polyphase

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5937835A (en) * 1997-06-24 1999-08-17 Eaton Corporation EGR system and improved actuator therefor
EP1091112B1 (fr) 1999-10-05 2004-04-21 Pierburg GmbH Soupape, conduit d'admission d'air et unité de recirculation de gaz d'échappement pour moteurs à combustion
US6443135B1 (en) * 1999-10-05 2002-09-03 Pierburg Aktiengesellschaft Assembly of a valve unit, a combustion air intake and an exhaust gas recirculation unit for an internal combustion engine
DE10221711A1 (de) * 2002-05-16 2003-11-27 Pierburg Gmbh Ventilsystem
DE102006009153A1 (de) 2006-02-24 2007-08-30 Mahle International Gmbh Abgasrückführeinrichtung
DE102006031028A1 (de) * 2006-07-05 2008-01-10 Gustav Wahler Gmbh U. Co. Kg Betätigungseinrichtung eines Ventils, insbesondere eines Abasrückführventil
ATE443806T1 (de) * 2006-07-06 2009-10-15 Cooper Standard Automotive D Abgasrückführventil
FR2926114B1 (fr) * 2008-01-03 2012-12-14 Valeo Sys Controle Moteur Sas Boucle egr d'un moteur a combustion interne d'un vehicule automobile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011067138A1 *

Also Published As

Publication number Publication date
ES2440772T3 (es) 2014-01-30
DE102009056251B4 (de) 2014-01-09
US9016266B2 (en) 2015-04-28
EP2507498B1 (fr) 2013-09-25
WO2011067138A1 (fr) 2011-06-09
US20120285411A1 (en) 2012-11-15
DE102009056251A1 (de) 2011-06-09

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