WO1995006809A1 - Dispositif d'etranglement - Google Patents

Dispositif d'etranglement Download PDF

Info

Publication number
WO1995006809A1
WO1995006809A1 PCT/EP1994/002880 EP9402880W WO9506809A1 WO 1995006809 A1 WO1995006809 A1 WO 1995006809A1 EP 9402880 W EP9402880 W EP 9402880W WO 9506809 A1 WO9506809 A1 WO 9506809A1
Authority
WO
WIPO (PCT)
Prior art keywords
throttle valve
throttle
throttle device
housing
sealing
Prior art date
Application number
PCT/EP1994/002880
Other languages
German (de)
English (en)
Inventor
Otto Altmann
Gerhard Brenner
Original Assignee
Filterwerk Mann & Hummel 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 Filterwerk Mann & Hummel Gmbh filed Critical Filterwerk Mann & Hummel Gmbh
Publication of WO1995006809A1 publication Critical patent/WO1995006809A1/fr

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
    • F02D9/08—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
    • F02D9/1005—Details of the flap
    • F02D9/101—Special flap shapes, ribs, bores or the like
    • F02D9/1015—Details of the edge of the flap, e.g. for lowering flow noise or improving flow sealing in closed flap position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1676—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part
    • 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
    • F02D9/1005—Details of the flap
    • F02D9/101—Special flap shapes, ribs, bores or the like
    • 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
    • F02D9/104—Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing
    • 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
    • F02D9/104—Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing
    • F02D9/1045—Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing for sealing of the flow in closed flap position, e.g. the housing forming a valve seat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/748—Machines or parts thereof not otherwise provided for
    • B29L2031/7506—Valves
    • 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
    • F02D9/107—Manufacturing or mounting details

Definitions

  • the invention relates to a throttle device according to the preamble of the main claim.
  • a throttle valve is known for example from EP 498 933 A1. This is integrated in a housing that can be attached to a carrier body.
  • the housing is designed in the manner of a throttle valve connector, that is, the connector is fixed on the one hand to the carrier body and on the other hand to the intake system of an internal combustion engine.
  • the invention has for its object to provide a throttle device that can be produced economically and a reliable effective seal of the throttle cross section he ögl icht.
  • An important advantage of the invention is that the consistent use of plastic in the intake tract of an internal combustion engine is largely taken into account. Because of the low modulus of elasticity, plastic in particular results in a much lower specific material stress, e.g. with Hertzian surface pressure due to the greatly enlarged contact surface due to the deformation than with steel pairings. In combination with an elastomer seal, the throttle cross-section is optimally sealed and thus extremely low leakage rates.
  • Another advantage of the invention is that a sealing bead is provided on the housing of the throttle device, on which the throttle valve rests, so that the sealing surface can be defined.
  • the elastomer seal is integrated in the sealing surfaces in a two-component process.
  • the base body is first injected in an injection mold, then gap openings are opened inside the injection mold in the areas in which the elastomer seal must be arranged, and these openings are filled with the elastomer sealing compound. After the manufactured part has cooled, it can be used in the tool be removed.
  • a small radial gap is provided between the throttle valve and the housing surrounding the throttle valve, that is to say, for example, the throttle valve connector. This ensures that out-of-roundness, as can occur, for example, due to warping, does not lead to the throttle valve jamming.
  • the idle air control can be integrated into the design of the throttle valve or the entire throttle device.
  • the wall of the housing runs within a certain angular range of the throttle valve in the manner of an idling gap curve, i.e.
  • the throttle valve opens, the gap between the throttle valve and the housing, which is initially close to zero, becomes progressively larger; from a certain angular position of the throttle valve, the idle air gap changes into the normal throttle valve opening.
  • the throttle valve can be controlled within this idle air gap area, so that complex idle air control with additional valves, bypasses and the like. . can be avoided.
  • the housing of the throttle device using the plastic injection molding process. It is also possible to manufacture the housing using extrusion technology, by pressing, rotary centrifugal technology or other processes. Basically, the entire working range of the throttle valve is 90 degrees, with the control taking place in the entire range with a high degree of accuracy. It is advantageous to the saddle, ie the support for the Throttle valve, which simultaneously exerts the sealing effect, to be connected directly to the housing, ie to produce the saddle and housing in a single injection mold.
  • a further embodiment of the throttle device provides for a so-called relaxation process to be used for optimum sealing between the throttle valve neck and the throttle valve. This means that the throttle valve experiences a reduction in elasticity, which is advantageously done by tempering.
  • the temperature control is in the zero position, i.e. made in the position in which the throttle valve rests on the throttle valve connector or the sealing shoulder of the throttle valve connector.
  • This relaxation process causes the plastic of the throttle valve to creep or flow and thus to adapt this throttle valve to the shape of the throttle neck.
  • the process is interrupted as soon as the throttle valve has reached its optimal shape, i.e. as soon as the sealing behavior corresponds to the specified value.
  • Figure 1 is a throttle valve installed in a throttle valve in the 0 degree position
  • FIG. 1a shows a detail from FIG. 2
  • FIG. 1b shows a further detailed representation from FIG. 1
  • Figure 1c shows a variant of Figure 1a
  • Figure 2 shows an injection molding tool for producing a throttle valve in 2K technology
  • FIG. 3 shows the function of the idle gap setting in a throttle valve
  • FIG. 3a shows a detail from FIG. 3,
  • FIG. 5a, b throttle clamps 1 types of agers
  • FIG. 6 shows a throttle valve with a Venturi nozzle for feeding in additional air
  • FIG. 7 shows a detailed illustration of a throttle valve
  • FIG. 8 shows the seal of the throttle valve
  • FIG. 9 shows a shaft seal, in particular a throttle valve shaft seal
  • Figure 11 shows the detail of a throttle valve with tolerance compensation.
  • the throttle device according to FIG. 1 consists of a throttle valve connector 10, in which the throttle valve 12 is mounted via a throttle valve shaft 11.
  • the throttle valve has an opening angle of 90 degrees and reliably seals the cross-section of the throttle valve in the rest position shown here.
  • the seal between the sealing saddle 13 of the throttle valve assembly 10 and the throttle valve 12 can be implemented in different ways.
  • FIG. 1 the sealing area between the throttle valve assembly 10 and the throttle valve 12 is shown in an enlarged detail.
  • the throttle valve 12 is provided on the sealing surface with an elastomer seal 14. This elastomer seal rests on the sealing saddle 13 of the throttle valve connector 10 when the throttle valve is closed.
  • FIG. 1c shows, in a further detailed illustration, one possibility for producing the sealing saddle 13.
  • This sealing saddle 13 can be produced by an embossing tool 16, which acts on the throttle valve connector and subsequently thermally deforms it.
  • the outer diameter of the throttle valve 12 is slightly smaller than the inner diameter of the throttle valve body 10, so that a gap S (0.1 to 0.5 mm) is formed, which is selected in this way that out-of-roundness, such as might occur due to shrinkage or warpage, is not a problem.
  • FIG. 2 shows an injection mold for producing a throttle valve in 2K technology.
  • the injection mold consists of an upper part 17 and a lower part 18.
  • a slide 19, 20 is arranged in each of the upper and lower part, which forms two different cavities in connection with the injection mold.
  • the tool is closed and the slides 19, 20 are moved into the starting position. This starting position is represented by the slide 20.
  • the first cavity is filled with thermoplastic.
  • the slides 19, 20 are then pulled back into the position represented by the slider 19 and the second cavity that is formed is filled with an elastomer sealing compound 21. It is possible to inject the throttle valve shaft into the throttle valve in a next operation. After opening the tool, a complete throttle valve can be removed.
  • the elastomer seal can also be clamped between an upper throttle valve part and a throttle valve part 1.
  • FIG. 3 shows the function of the idle gap setting, which is shown again in Figure 3a in an enlarged view is.
  • the throttle valve essentially corresponds to that shown in FIG. 1.
  • the throttle valve connector 10 is designed in its wall such that it represents a tightly fitting shape in the rest position of the throttle valve 12 and takes into account a corresponding gap S as a tolerance gap.
  • the gap 22 between the throttle valve and throttle valve connector increases slightly as the throttle valve opens until the throttle valve leaves the wall area of the throttle valve connector 10 and is turned into the open position.
  • the dimensioning of the gap 22 is chosen so that an idle control of an internal combustion engine is possible, i.e. the throttle valve will move within the angle Alpha L when idling. It is only when accelerating from idle that the throttle valve is opened further, leaves the idling range and changes to the progressive opening range.
  • Plastic throttle bodies and plastic throttle bodies are particularly suitable due to their simple Manufacture 1 process, several functions, such as to combine the integration of the sealing elements and combination with an idle gap setting.
  • FIG. 4a shows a throttle valve 12 in cross section, which consists of a thermoplastic plastic in its core and which is completely surrounded by an elastomer 23.
  • a throttle valve is manufactured using the 2K process.
  • FIG. 4b shows a variant.
  • a throttle valve is shown, which is also completely covered by an elastomer.
  • the thermoplastic inner part 1 there is a metal core 24. By inserting a metal core, the throttle valve can be reduced in volume without fear of loss of strength.
  • 5a and b show the bearing points of throttle valves, sealing lips 25, 26 being provided in each case, which are also formed by the elastomer coating 23 and provide reliable sealing of the throttle valve on the throttle valve shafts 11.
  • FIG. 6 shows a throttle valve 12 installed in a T-piece 28 of an intake system. This is opened by a Bowden cable according to arrow 27, not shown here.
  • a connection in the form of a Venturi tube 29 is arranged on the right-hand tube wall of the T-piece 28. This can be used to supply additional fresh air or exhaust gas. Of course, this venturi tube is only effective when the drosel flap is open.
  • FIG. 1 A detailed illustration of a throttle valve 12 is shown in FIG. This rotates around the axis center of the shaft 11 and closes off the throttle valve connector 10 in the rest position. As shown in FIG. 8, sealing takes place via a sealing edge 30 on the throttle valve connector 10. The throttle valve 12 with its elastomer seal 14 rests on this sealing edge.
  • FIG. 1 Three position phases of the throttle valve are shown in FIG. Starting from the zero position (0 °) to a position I (4 °), the throttle valve is closed. Only from this intermediate position I and position II (9 °) is the idle control range. It is in this area Throttle valve during the idling phase. This eliminates the need for a separate idle air duct. This idling range is progressive and goes into the full load range up to the 90 ° position of the throttle valve in phase three.
  • FIG. 9 shows a sealing measure for additional leakage air sealing, in particular in the case of a throttle valve storage.
  • the throttle valve shaft 11 consists of a two-component material.
  • the core of the throttle valve shaft in particular a PPS plastic, is provided with an elastomer coating 31. This elastomer coating has the shape shown in the area of the seal.
  • the throttle valve shaft is rotatably mounted within the throttle valve neck 10, in particular via a ball bearing 32.
  • a PUR seal 33 is located between the ball bearing and the elastomer coating of the throttle valve shaft.
  • a copper wire winding 34 is arranged on the throttle valve shaft 11. This serves for resistance welding and heats the shaft 11 and a sealing ring located on the shaft, which optimally contacts the shaft 11 by melting and thus ensures reliable leakage air sealing.
  • FIG. 10a A detail of a throttle valve 114 is shown in FIG. 10a. This is arranged in a clean air pipe 110. A sealing surface 116 is provided on the clean air tube 110, on which the throttle valve rests. An elastomer seal 122 is integrated into the throttle valve 114 for reliable sealing.
  • the outer contour of the throttle valve in the area of the surface 123 has a slightly smaller diameter than the inner diameter of the clean air tube 110.
  • the throttle valve is one
  • a force F is generated according to arrow 124 in FIG. 10b.
  • This force F is in essentially formed by pivoting the throttle valve about the pivot point of the throttle valve shaft 115. Due to this force and the temperature control process, a resulting movement along the arrow SR will occur until the surface 123 of the throttle valve on the lower edge has adapted to the inner contour of the throttle valve body.
  • this relaxation process can also be achieved by other means, e.g. by ultrasound or other elasticity-reducing measures. It is crucial that the throttle valve is adapted to the existing contour.
  • FIG. 11 shows a further detailed illustration of a throttle valve.
  • an elastomeric element 122 is arranged as a sealing element in this throttle valve.
  • this throttle valve has an additional element 125.
  • This has the task of decoupling the throttle valve region 126 from the throttle valve region 127.
  • the element 125 can be an elastomer or a plastic with special flow properties. During the relaxation process, this decoupling element contributes to a better adaptation of the throttle valve contour to the contour of the clean air connector or the throttle valve connector, which is not shown in this drawing.
  • Element 125 can also be produced in a two-step process using the two-component plastic injection molding process together with the throttle valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

L'invention concerne un dispositif d'étranglement (12), notamment un papillon des gaz (12) placé dans le canal d'admission d'un moteur à combustion interne, qui comporte un arbre de papillon des gaz (11) qui s'étend de manière concentrique par rapport à un axe médian. Le papillon des gaz (12) ainsi que le carter (10) qui l'entoure comportent des surfaces d'étanchéité. Ces surfaces d'étanchéité sont pourvues d'au moins une garniture d'étanchéité élastomère.
PCT/EP1994/002880 1993-09-02 1994-08-31 Dispositif d'etranglement WO1995006809A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934329526 DE4329526A1 (de) 1993-09-02 1993-09-02 Drosseleinrichtung
DEP4329526.6 1993-09-02

Publications (1)

Publication Number Publication Date
WO1995006809A1 true WO1995006809A1 (fr) 1995-03-09

Family

ID=6496590

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1994/002880 WO1995006809A1 (fr) 1993-09-02 1994-08-31 Dispositif d'etranglement

Country Status (2)

Country Link
DE (1) DE4329526A1 (fr)
WO (1) WO1995006809A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180038290A1 (en) * 2015-03-30 2018-02-08 Mitsubishi Heavy Industries, Ltd. Turbine supercharger and two-stage supercharging system
US10844778B2 (en) * 2015-03-30 2020-11-24 Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. Exhaust-flow-rate control valve, and two-stage supercharging system provided with same

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996035866A2 (fr) * 1995-05-09 1996-11-14 Filterwerk Mann & Hummel Gmbh Papillon des gaz permettant de reguler la quantite d'air aspire dans un moteur a combustion interne et son procede de fabrication
DE19615438A1 (de) * 1995-07-17 1997-01-23 Mann & Hummel Filter Ventil
KR100305692B1 (ko) * 1995-12-19 2001-12-17 가나이 쓰도무 내연기관의교축밸브제어장치
DE19848440A1 (de) * 1998-10-21 2000-04-27 Mann & Hummel Filter Klappenmechanismus
ITBO20020303A1 (it) * 2002-05-17 2003-11-17 Magneti Marelli Powertrain Spa Nuovi otturatori per valvole a farfalla
DE10255339A1 (de) * 2002-11-27 2004-06-09 Siemens Ag Verfahren zur Herstellung einer Drosselklappe
DE102006009155A1 (de) * 2006-02-24 2007-08-30 Mahle International Gmbh Schaltventil und zugehöriges Herstellungsverfahren
JP4885105B2 (ja) * 2007-10-11 2012-02-29 三菱重工業株式会社 流体切換弁装置とこれを備えた排気ガス制御バルブ及びウェストゲートバルブ
DE102016110998A1 (de) * 2016-06-15 2017-12-21 Fischer Rohrtechnik Gmbh Drosselklappenanordnung und Verfahren zur Herstellung einer Drosselklappenanordnung
ES2711752T3 (es) * 2015-12-16 2019-05-07 Fischer Rohrtechnik Gmbh Carcasa de válvula de mariposa para una disposición de válvula de mariposa para un motor de combustión interna

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EP0494344A1 (fr) * 1991-01-09 1992-07-15 Firma Carl Freudenberg Système d'étanchéité pour la construction d'un papillon avec un axe massif

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Publication number Priority date Publication date Assignee Title
US4243000A (en) * 1978-03-15 1981-01-06 Yamaha Hatsukoki Kabushiki Kaisha Induction system of multi-cylinder engine
WO1991013245A2 (fr) * 1990-02-16 1991-09-05 Siemens Aktiengesellschaft Lame de fermeture hermetique d'etrangleurs de moteurs
EP0494344A1 (fr) * 1991-01-09 1992-07-15 Firma Carl Freudenberg Système d'étanchéité pour la construction d'un papillon avec un axe massif

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180038290A1 (en) * 2015-03-30 2018-02-08 Mitsubishi Heavy Industries, Ltd. Turbine supercharger and two-stage supercharging system
US10697377B2 (en) * 2015-03-30 2020-06-30 Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. Turbine supercharger and two-stage supercharging system
US10844778B2 (en) * 2015-03-30 2020-11-24 Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. Exhaust-flow-rate control valve, and two-stage supercharging system provided with same

Also Published As

Publication number Publication date
DE4329526A1 (de) 1995-03-09

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