EP3014090A1 - Système à clapet pour moteur à combustion interne - Google Patents

Système à clapet pour moteur à combustion interne

Info

Publication number
EP3014090A1
EP3014090A1 EP14715631.9A EP14715631A EP3014090A1 EP 3014090 A1 EP3014090 A1 EP 3014090A1 EP 14715631 A EP14715631 A EP 14715631A EP 3014090 A1 EP3014090 A1 EP 3014090A1
Authority
EP
European Patent Office
Prior art keywords
flap
internal combustion
combustion engine
engine according
flaps
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Withdrawn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
EP14715631.9A
Other languages
German (de)
English (en)
Inventor
Alpay CAPAN
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 EP3014090A1 publication Critical patent/EP3014090A1/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Withdrawn legal-status Critical Current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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1035—Details of the valve housing
    • F02D9/106—Sealing of the valve shaft in the housing, e.g. details of the bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/109—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps having two or more flaps
    • F02D9/1095—Rotating on a common axis, e.g. having a common shaft
    • 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
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/223—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves with a plurality of valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/224—Details of bearings for the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2268—Sealing means for the axis of rotation

Definitions

  • the flap device should be inexpensive to manufacture and easy to install.
  • the thrust washer against a radial peripheral edge of the flow channel dominating, centrally mounted flap.
  • These flaps produce uniform thermal expansion due to their symmetry.
  • the contact surfaces for the thrust washers are perpendicular to the control shaft, so that the flat contact of the thrust washers is maintained in all operating conditions.
  • the spring element rests with its axial end facing away from the thrust washer against the bearing bush, whereby the space requirement is minimized. Additional contact surfaces for supporting the spring force are not required. Furthermore, it is advantageous if the thrust washer protrudes axially into the flow channel, as a thermal expansion of the flap is compensated in the axial direction by the movable thrust washer without jamming of the flap in the channel is to be feared or sufficient tightness of the flap in the Channel occlusive state must be waived.
  • the spring element consists of several superimposed corrugated springs or disc springs. These can simply be plugged onto the control shaft and generate a constant contact force over the circumference.
  • a shoulder on the inner wall of the flow channel is formed in the flow housing on the two sides of the actuating shaft against which one half of the divided by the actuating shaft flap in the closed state axially abuts, wherein the flap arranged radially spaced from the inner wall is.
  • a second bore is formed in the flow housing, in which a second bearing bush, in which an opposite second end of the steep shaft is mounted, is attached. Accordingly, the flap is mounted on both sides, which reduces the force acting on the first bearing and the adjustment forces necessary for adjustment.
  • the flow housing has a second flow channel, in which a second flap is arranged, which is fastened on the first control shaft, so that two flaps can be actuated via an actuator.
  • a second flap is arranged, which is fastened on the first control shaft, so that two flaps can be actuated via an actuator.
  • a third bore is arranged between the flaps in the flow housing, in which a third bearing bush is fixed, in which the control shaft is mounted. This again improves the bearing of the control shaft and reduces the necessary restoring forces. A bending of the control shaft is reliably prevented.
  • the axial ends of the third bearing bush or on both sides against the bearing bush fitting shims project into the two flow channels and bear against the flaps.
  • a solid contact surface is created in the channel at the opposite side to the spring element, which increases the tightness when heat expansions occur.
  • a symmetrical position of the two flaps is ensured to each other, by which a jamming is prevented.
  • the three bushings are press-fitted into the holes, so that fixed to the spring elements Investment surfaces are available without having to use additional components.
  • a circular support surface is formed on the radial 5 peripheral edge of the flaps opposite the thrust washers and shims, abut against the thrust washers and shims and from the radial peripheral edge an annular projection extends axially the thrust washers and shims over an axial portion This results in an additional reduction of the leakage along the control shaft in the direction of the holes.
  • a flap device for an internal combustion engine which is sufficiently leak-tight to the outside and internally has only small leaks. This tightness is maintained even with changing thermal loads, since both component and assembly tolerances and thermal expansion are compensated by the axially flexible spring elements and thrust washers without the sealing effect is impaired. There is also a permanent centering of the flaps in the channels. Due to the small number of components and the simple structure manufacturing and assembly costs are reduced.
  • the figure shows a side view of a flap device according to the invention in a sectional view.
  • the flap device consists of a flow housing 10 in which a first and a second flow channel 12, 14 through which exhaust gas flows, for example, are formed.
  • the flow channels 12, 14 are divided into two halves in cross-section by a control shaft 16, wherein on the control shaft 16 both in the first flow channel 12 and in the second flow channel 14 each have a 5 flap 18, 20 is fastened by means of screws 22 which by turning the Adjusting shaft 16 are rotated in the flow channels 12, 14 and thus regulate the free flow cross-sections in the flow channels 12, 14.
  • the control shaft 16 is mounted in the flow housing 10 via three bushings 24, 26, 28, of which the first bearing bush 24 is pressed in a first bore 30, through which the actuating shaft 16 protrudes from the flow housing 10 to the outside and the second bearing bush 26 on opposite end of the adjusting shaft 16 in a second bore 32 beyond the two flaps 18, 20 is pressed.
  • the second bore 32 is also open to the outside, but this opening is closed by a plug 34.
  • the third bearing bush 28 is pressed between the two flow channels 12, 14 in a third bore 36 which is arranged on an axis with the first and the second bore 30, 32.
  • the spring elements 40, 42 are formed in the present embodiment as Wellfederbyte, each of three superimposed Corrugated springs 48, which surround the control shaft 16 radially.
  • the spring elements 40, 42 are arranged biased in their installation positions, wherein a first axial end of the first spring element 40 bears against the first bearing bush 24 and the opposite axial end abuts against the first axially movable thrust washer 44 and a first axial end of the second spring element 42 against the second bearing bush 26 abuts and abuts the opposite axial end against the second axially movable thrust washer 46.
  • the bias of the spring elements 40, 42 is maintained by the fact that the thrust washers 44, 46 respectively abut with their facing away from the spring elements 40, 42 axial ends against a radial peripheral edge 54 of the flaps 18, 20, in the region of the contact surfaces of the thrust washers 44th , 46 is flattened, so that a flat edition arises. Accordingly, the thrust washers 44, 46 protrude with their abutting against the flaps 18, 20 sides in the flow channels 12, 14. A flow of exhaust along the control shaft 16 is by this steadily biased support of the axially movable thrust washers 44, 46 against the flaps 18, 20 significantly reduced.
  • shims 50, 52 are arranged in the third bore 36, which in each case lie flat against the flaps 18, 20 and project into the flow channels 12, 14 from the side opposite the thrust washers 44, 46. These shims 50, 52 are also axially movable and are pressed by the spring elements 40, 42 via the thrust washers 44, 46 and the flaps 18, 20 from both sides against the third bearing bush 28.
  • This effect is additionally improved if the flaps 18, 20 have a circular bearing surface on their peripheral edges 54 facing the thrust washers 44, 46 or the shims 50, 52, so that the thrust washers 44, 46 and shims 50, 52 over the entire surface against the flaps 18, 20 abut.
  • This sealing effect can be further improved in that the circular bearing surfaces of the flaps 18,20 have a diameter which is slightly larger than the diameter of the thrust washers 44, 46 and the shims 50, 52 and that from the peripheral edge of the circular bearing surfaces an annular projection extends axially, which surrounds the thrust washers 44, 46 and the shims 50, 52 partially radially.
  • 10 not shown paragraphs are formed on the inner walls of the flow housing, which serve as a valve seat.
  • a centering of the flaps 18, 20 in the flow channels 12, 14 closing position does not lead to a separation of the sealing parts due to this axial backlash compensation by the prestressed spring elements 40, 42 and the sealing thrust washers 44, 46th gaps between the flap 18, 20th and the bore 30, 32 sealing thrust washer 44, 46 are prevented by the spring elements 40, 42.
  • An optional radial expansion of the flaps 18, 20 is also possible, without jamming is to be feared, since a distance from the channel wall is present, whereby a radial concern of the flap 18, 20 on the inner wall of the flow channel 12, 14 is prevented.
  • the simultaneous centering due to the spring elements 40, 42 ensures a steadily existing tightness even at high thermal loads.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lift Valve (AREA)
  • Exhaust Silencers (AREA)

Abstract

L'invention concerne un système à clapet, destiné à un moteur à combustion interne, qui comprend un boîtier d'écoulement (10) dans lequel est formé un premier conduit d'écoulement (12), un arbre de réglage (16), un premier clapet (18) qui est disposé sur l'arbre de réglage (16) dans le premier conduit d'écoulement (12), un premier trou (30) dans le boîtier d'écoulement (10) à travers lequel une première extrémité de l'arbre de réglage (16) dépasse vers l'extérieur, un premier coussinet (24) dans lequel est monté l'arbre de réglage (16) et qui est disposé dans le premier trou (30), et des moyens d'étanchéité (38) qui entourent l'arbre de réglage (16) dans le sens radial et possèdent au moins un premier élément à ressort (40). Selon l'invention, pour garantir une étanchéité suffisante même lorsqu'il se produit des dilatations thermiques, l'élément à ressort (40) repose avec une précontrainte contre une rondelle de butée (44) qui entoure l'arbre de réglage dans le sens radial, qui est mobile au moins dans le sens axial et dont le côté axialement opposé repose contre le clapet (18).
EP14715631.9A 2013-06-25 2014-04-08 Système à clapet pour moteur à combustion interne Withdrawn EP3014090A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013106627.5A DE102013106627B4 (de) 2013-06-25 2013-06-25 Klappenvorrichtung für eine Verbrennungskraftmaschine
PCT/EP2014/057038 WO2014206593A1 (fr) 2013-06-25 2014-04-08 Système à clapet pour moteur à combustion interne

Publications (1)

Publication Number Publication Date
EP3014090A1 true EP3014090A1 (fr) 2016-05-04

Family

ID=50440676

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14715631.9A Withdrawn EP3014090A1 (fr) 2013-06-25 2014-04-08 Système à clapet pour moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP3014090A1 (fr)
DE (1) DE102013106627B4 (fr)
WO (1) WO2014206593A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD251387A5 (de) * 1985-02-26 1987-11-11 �����@�K�K�Kk�� Drosselklappenventil
GB2495220A (en) * 2011-09-30 2013-04-03 Gt Group Ltd Exhaust control valve drive sealing
WO2014166593A1 (fr) * 2013-04-12 2014-10-16 Mtu Friedrichshafen Gmbh Système de soupape

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
DE1179049B (de) * 1959-07-16 1964-10-01 Zahnradfabrik Friedrichshafen Auspuffmotorbremse, bestehend aus einer Bremsklappe, die eine durchgehende Bohrung zur Aufnahme einer Klappenwelle aufweist, und aus einem ungeteilten Gehaeuse
EP0644982B1 (fr) * 1992-06-10 1996-01-31 Siemens Electric Limited Soupape de commande d'echappement dans un moteur a combustion interne
DE4305123C2 (de) * 1993-02-19 1995-01-26 Pierburg Gmbh Anordnung einer Drosselklappe
US5630571A (en) * 1995-10-16 1997-05-20 General Motors Corporation Exhaust flow control valve
DE29716937U1 (de) * 1997-09-20 1997-10-30 Klubert + Schmidt GmbH, 91278 Pottenstein Doppelklappenvorrichtung für eine zweiflutige Abgasleitung
DE10006795A1 (de) * 1999-08-05 2001-02-08 Pierburg Ag Anordnung einer Drosselklappe
DE10009874B4 (de) * 2000-03-01 2013-03-07 Pierburg Gmbh Drosselklappenvorrichtung für ein Abgasleitungssystem
JP2001323815A (ja) * 2000-03-10 2001-11-22 Bosch Braking Systems Co Ltd 排気管開閉弁装置
JP4469637B2 (ja) * 2004-03-12 2010-05-26 愛三工業株式会社 内燃機関の排気制御装置
GB0806401D0 (en) * 2008-04-09 2008-05-14 Cummins Turbo Tech Ltd Butterfly valve
DE202008005992U1 (de) * 2008-04-30 2008-08-14 Friedrich Boysen Gmbh & Co. Kg Klappenventil
DE102012111810B4 (de) * 2012-12-05 2015-02-05 Pierburg Gmbh Klappenvorrichtung für eine Verbrennungskraftmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD251387A5 (de) * 1985-02-26 1987-11-11 �����@�K�K�Kk�� Drosselklappenventil
GB2495220A (en) * 2011-09-30 2013-04-03 Gt Group Ltd Exhaust control valve drive sealing
WO2014166593A1 (fr) * 2013-04-12 2014-10-16 Mtu Friedrichshafen Gmbh Système de soupape

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2014206593A1 *

Also Published As

Publication number Publication date
WO2014206593A1 (fr) 2014-12-31
DE102013106627B4 (de) 2015-02-05
DE102013106627A1 (de) 2015-01-08

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