EP1036265B1 - Corps papillon a papillon auto-centre - Google Patents

Corps papillon a papillon auto-centre Download PDF

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Publication number
EP1036265B1
EP1036265B1 EP98956976A EP98956976A EP1036265B1 EP 1036265 B1 EP1036265 B1 EP 1036265B1 EP 98956976 A EP98956976 A EP 98956976A EP 98956976 A EP98956976 A EP 98956976A EP 1036265 B1 EP1036265 B1 EP 1036265B1
Authority
EP
European Patent Office
Prior art keywords
throttle valve
conduit
reliefs
downstream
valve body
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.)
Expired - Lifetime
Application number
EP98956976A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1036265A1 (fr
Inventor
Jean-Pierre Joigneau
Claude Pajard
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.)
Marelli France SAS
Original Assignee
Magneti Marelli France SAS
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 Magneti Marelli France SAS filed Critical Magneti Marelli France SAS
Publication of EP1036265A1 publication Critical patent/EP1036265A1/fr
Application granted granted Critical
Publication of EP1036265B1 publication Critical patent/EP1036265B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02D9/1035—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

Definitions

  • the present invention aims to facilitate the centering of the butterfly inside the duct and this, by simple, effective and inexpensive means.
  • Another object of the present invention is to ensure, even in the event of a breakdown, a minimum safety air flow in the duct, downstream of the butterfly.
  • the throttle body of the aforementioned type is essentially characterized in that the self-centering means include first reliefs in protruding towards the inside of the duct, and the edge of the butterfly includes second reliefs projecting towards the wall of the duct, the first and second reliefs being substantially complementary in shape.
  • FIG. 1 represents a butterfly body 1 which has a housing 2 in which is formed a conduit intake 3, longitudinal axis X-X. Box 2 is manufactured by molding in a synthetic material such as thermoplastic material and obtained in its final form without additional machining or deburring.
  • a pivot 5 of axis Y-Y, perpendicular to the longitudinal axis X-X of the conduit 3, and intersecting this axis X-X, is mounted swirling, and constitutes a median axis of rotation for a butterfly 6 in the form of disc of constant thickness, approximately shaped circular and which will be further described with regard to Figures 2 to 4.
  • the median axis of rotation 5 is mounted swirling at a central section 7 located substantially at mid-height of conduit 3 and dividing this conduit into a section upstream 8, and in a downstream section 9.
  • the butterfly 6 shown in Figures 2 to 4 is advantageously made of synthetic material such as thermoplastic material. It consists of a disc 10 of substantially circular or slightly elliptical in shape, of generally constant thickness, so that it has a section 11 of constant height over the entire periphery of the disc.
  • the butterfly 6 pivots around its median axis of rotation 5 in the direction of arrow F shown in Figure 3, between a minimum opening position such that that shown in Figure 2 and an open position maximum for which the butterfly plane is oriented substantially parallel to the axis X-X of the conduit air intake 3.
  • This butterfly can thus be considered as consisting of two half-discs 12 and 13, the half-disc 12 turning towards the upstream part 8 of the conduit 3 and the downstream half-disc 13 rotating towards the downstream part 9 of the conduit 3.
  • the wall 4 of this conduit comprises means self-centering 15 which cooperate with the unit 11 of the butterfly 6.
  • These self-centering means 15 include first reliefs 16 projecting from the wall 4 of the conduit 3 and directed towards the interior of this leads. These first reliefs 16 cooperate, in the position minimum opening of the butterfly, with second reliefs 17 projecting from edge 11 of the butterfly and directed towards the wall 4 of the conduit 3. These first 16 and second 17 reliefs are substantially in shape complementary in order to center the butterfly by corner.
  • the first reliefs 16 and the second reliefs 17 are substantially convergent in shape and the first reliefs 16 extend in a plane substantially perpendicular to the longitudinal axis X-X of conduit 3, at level of minimum throttle opening position 6.
  • the first reliefs 16 are conical and the second reliefs 17 are of frustoconical shape.
  • the conical shape of the first reliefs 16 is of slope less than the slope of the form frustoconical of the second reliefs 17. These slopes are respectively of the order of 3 and 5 degrees.
  • the first reliefs 16 are located on two spherical caps 20 and 21 which are inscribed in a sphere whose center imaginary is located at the intersection of the longitudinal axis X-X of the duct 3 and the Y-Y axis of rotation of the butterfly 6. These two spherical caps 20 and 21 came in one piece with the wall 4 of the conduit 3 and projecting inside this conduit 3.
  • the spherical cap 20 extends over the upstream part 8 of duct 3, from the minimum open position of the butterfly 6, while the spherical cap 21 extends on the downstream part 9 of the conduit 3, from the position minimum opening of said butterfly 6.
  • the first reliefs 16 are located respectively in the lower part and in the upper part of the spherical caps 20 and 21.
  • Each of these spherical caps 20 and 21 is symmetrical about a plane perpendicular to the axis median Y-Y of rotation of the butterfly 6 and passing through the axis longitudinal X-X of the duct 3.
  • the spherical cap 20 has two recesses 23 and the spherical cap 21 has two recesses 24.
  • the recesses 23 extend in the lower part of the cap spherical 20 from the median axis Y-Y while the recesses 24 of the spherical cap 21 extend in upper part of this cap, from the median axis of rotation Y-Y.
  • Each of the spherical caps 20 and 21 thus has respectively a central part 25, 26 and two arms 27, 28.
  • the spherical cap 20 has an upstream edge 29 and the spherical cap 21 has a downstream edge 30, the shape is adapted to the amount of air to be admitted in the downstream section 9 of the conduit 3 as a function of the angle butterfly opening 6.
  • the upstream part 8 communicates with the downstream part 9 by the recesses 23 and 24 formed in the spherical caps 20 and 21.
  • This position is the position in butterfly backup mode which corresponds to point I of the graph of figure 5.
  • the quantity of air admitted into the downstream section 9 is weak.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Lift Valve (AREA)
EP98956976A 1997-12-01 1998-11-27 Corps papillon a papillon auto-centre Expired - Lifetime EP1036265B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9715078 1997-12-01
FR9715078A FR2771777B1 (fr) 1997-12-01 1997-12-01 Corps papillon a papillon auto-centre
PCT/FR1998/002557 WO1999028609A1 (fr) 1997-12-01 1998-11-27 Corps papillon a papillon auto-centre

Publications (2)

Publication Number Publication Date
EP1036265A1 EP1036265A1 (fr) 2000-09-20
EP1036265B1 true EP1036265B1 (fr) 2002-01-16

Family

ID=9513995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98956976A Expired - Lifetime EP1036265B1 (fr) 1997-12-01 1998-11-27 Corps papillon a papillon auto-centre

Country Status (6)

Country Link
EP (1) EP1036265B1 (es)
BR (1) BR9814716A (es)
DE (1) DE69803226T2 (es)
ES (1) ES2171313T3 (es)
FR (1) FR2771777B1 (es)
WO (1) WO1999028609A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1375871B1 (en) * 1999-11-01 2004-12-29 Denso Corporation Method for assembling a valve for intake air controller for internal combustion engine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1600880A1 (de) * 1951-01-28 1971-09-16 Pierburg Kg A Drosselklappe
US4356801A (en) * 1981-02-02 1982-11-02 Chrysler Corporation Throttle body fuel injection
US4860706A (en) * 1987-09-14 1989-08-29 Aisan Kogyo Kabushiki Kaisha Throttle body
FR2650360B1 (fr) * 1989-07-28 1991-11-29 Peugeot Vanne a papillon
JP2863876B2 (ja) * 1991-03-01 1999-03-03 愛三工業株式会社 スロツトルバルブ組付装置
JPH05296067A (ja) * 1992-04-20 1993-11-09 Aisan Ind Co Ltd 内燃機関用吸気制御装置
FR2729729B1 (fr) * 1995-01-20 1997-04-04 Magneti Marelli France Organe d'etranglement de forme elliptique, son procede de fabrication et vanne, telle que corps papillon, le comportant

Also Published As

Publication number Publication date
FR2771777B1 (fr) 2000-01-28
FR2771777A1 (fr) 1999-06-04
WO1999028609A1 (fr) 1999-06-10
BR9814716A (pt) 2000-10-03
EP1036265A1 (fr) 2000-09-20
DE69803226D1 (de) 2002-02-21
ES2171313T3 (es) 2002-09-01
DE69803226T2 (de) 2002-09-19

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