EP0507652B1 - Herstellungsverfahren für eine Drosselklappe in einer Kraftstoff-Versorgungseinrichtung - Google Patents

Herstellungsverfahren für eine Drosselklappe in einer Kraftstoff-Versorgungseinrichtung Download PDF

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Publication number
EP0507652B1
EP0507652B1 EP19920400807 EP92400807A EP0507652B1 EP 0507652 B1 EP0507652 B1 EP 0507652B1 EP 19920400807 EP19920400807 EP 19920400807 EP 92400807 A EP92400807 A EP 92400807A EP 0507652 B1 EP0507652 B1 EP 0507652B1
Authority
EP
European Patent Office
Prior art keywords
valve
butterfly
zones
thickness
manufacturing
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
EP19920400807
Other languages
English (en)
French (fr)
Other versions
EP0507652A1 (de
Inventor
Bruno Bressan
Gilles Sertillange
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.)
Solex SA
Original Assignee
Solex SA
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 Solex SA filed Critical Solex SA
Publication of EP0507652A1 publication Critical patent/EP0507652A1/de
Application granted granted Critical
Publication of EP0507652B1 publication Critical patent/EP0507652B1/de
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
    • F02D9/107—Manufacturing or mounting details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/06—Making more than one part out of the same blank; Scrapless working

Definitions

  • the present invention relates to a method of manufacturing a throttle valve intended to be fixed to a rotary shaft passing through a passage so as to control an air flow in the passage. It finds a particularly important application in supply installations for an internal combustion engine having a carburetor or a body comprising a throttle which is used to regulate the air flow admitted to the engine.
  • the shaft allows the butterfly to rotate between a fully open position, where it is oriented parallel to the axis of the passage, and a closed position, where it is applied against the wall of the passage and where, in general, it makes an angle of a few degrees with the plane perpendicular to the axis of the passage.
  • butterfly is mounted in a slot crossing the rotary shaft: in this case the axis of rotation of the butterfly is merged with a diameter of the butterfly and a diameter of the conduit.
  • the butterfly can then be manufactured in a simple way, because its shape is that of a slice cut obliquely from a straight cylinder. It then suffices to cut out butterfly blanks with a press, to stack them while maintaining them in the appropriate orientation using a spindle and shims, and to machine the cylinder thus formed.
  • Butterflies are also used fixed, for example by screws, on a flat machined on the rotary shaft.
  • a flat machined on the rotary shaft When the diameter of the rotary shaft is large, one can practice a flattened depth such that the plane of the butterfly practically contains the axis of rotation.
  • the rotary shaft When the passage is of small section, the rotary shaft has a diameter too small for it to be possible to machine a deep flat there.
  • the throttle valve is offset from the axis of rotation: this situation is encountered in particular in many single-point injection supply systems for internal combustion engines.
  • FIG. 1 shows very schematically, by way of example, a throttle body 10 having a housing 12 in which is formed a passage 14 of cylindrical shape.
  • the housing is traversed by a rotary shaft 16, controlled by the driver.
  • a flat 17 against which is applied the butterfly 20 is formed.
  • the flat being shallow, the butterfly is largely offset from the axis of rotation.
  • FIG. 1 shows such indentations 22 which constitute in the butterfly thinned peripheral zones limited by a step in the form of an arc of a circle.
  • the present invention aims to provide a butterfly manufacturing process of the above defined type avoiding the need for an additional machining operation performed individually on each butterfly.
  • the invention proposes in particular a manufacturing method according to claim 1.
  • throttle butterflies having peripheral zones thinned by the formation of a circumferential step on at least one face (the operation can however be carried out on both sides, for example for applications where the cross section of the passage varies along its axis).
  • the butterfly 20 shown in FIGS. 2 and 3 has a disc shape comprising two thinned zones 22, having for example 0.5 mm thickness when the thickness of the rest of the butterfly is 1.5 mm and the angle of the butterfly with the cross section, in the closed position, is approximately 5 °.
  • In the butterfly are pierced two holes 24 for receiving fixing screws on the rotary shaft.
  • Two notches 26 are provided in the butterfly shown in Figures 2 and 3, to allow the mounting of sealing elements not shown.
  • the thinned zones 22 can be provided over an entire half of the butterfly, except for a central angle a of approximately 40 °.
  • a locating hole 34 is drilled, in the zone which will subsequently correspond to the central part of the butterfly, in order to allow locating once the zones which contain the holes 28 have been eliminated.
  • stage IV the periphery of the butterfly in its indented part is formed.
  • stage V the other half is formed, which eliminates the zones containing the locating holes 28.
  • step VI the two holes 24 for the passage of the screws are formed by the press.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)
  • Punching Or Piercing (AREA)

Claims (4)

  1. Herstellungsverfahren für eine Drosselklappe (20), die am Umfang dünne Zonen (22) durch Bildung einer Stufe am Umfang auf wenigstens einer Seite aufweist,
    dadurch gekennzeichnet,
    daß man vor der maschinellen Bearbeitung, um den Drosselklappen (20) einen Rand in Form einer schiefen Scheibe eines geraden Zylinders zu erteilen, Rohlinge der Drosselklappe fertigt, indem man ein Metallband an aufeinanderfolgenden Bearbeitungsstationen für die Formgebung vorbeiführt, wobei man bogenförmige Aussparungen (30) auf die Art ausschneidet, daß ihr innerer Rand im wesentlichen der Form der endgültigen Drosselklappe entspricht, wobei man die Umfangszonen, um ihre Dicke zu reduzieren, preßt und man die äußere Form der Drosselklappe quer zu den Zonen reduzierter Dicke und quer zu dem Band, das seine ursprüngliche Dicke beibehält, schneidet.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man die Umfangszonen auf die Art preßt, daß man das Metall in den Raum, der durch die Aussparungen gebildet ist, fließen läßt.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß man in der Presse zuerst seitliche Löcher (28) für die Positionierung jeder Plazierung eines Rohlings stanzt, dann ein Loch (34) für die Positionierung nahe der Mitte der fertigen Drosselklappe stanzt, bevor die äußere Form des Rohlings der Drosselklappe ausgeschnitten wird.
  4. Verfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß man nacheinander, in zwei aufeinanderfolgenden Bearbeitungsstationen, den Teil der Drosselklappe, der die dünnen Zonen umfaßt, ausschneidet und den Rest der Drosselklappe ausschneidet.
EP19920400807 1991-03-27 1992-03-25 Herstellungsverfahren für eine Drosselklappe in einer Kraftstoff-Versorgungseinrichtung Expired - Lifetime EP0507652B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9103716 1991-03-27
FR9103716A FR2674600B1 (fr) 1991-03-27 1991-03-27 Procede de fabrication de papillon d'etranglement utilisable dans une installation d'alimentation en combustible.

Publications (2)

Publication Number Publication Date
EP0507652A1 EP0507652A1 (de) 1992-10-07
EP0507652B1 true EP0507652B1 (de) 1995-04-26

Family

ID=9411190

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920400807 Expired - Lifetime EP0507652B1 (de) 1991-03-27 1992-03-25 Herstellungsverfahren für eine Drosselklappe in einer Kraftstoff-Versorgungseinrichtung

Country Status (3)

Country Link
EP (1) EP0507652B1 (de)
DE (1) DE69202190D1 (de)
FR (1) FR2674600B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE10150516A1 (de) * 2001-10-12 2003-04-17 Pierburg Gmbh Drosselklappenanordnung für Brennkraftmaschinen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2105343A (en) * 1936-09-16 1938-01-11 Briggs & Stratton Corp Butterfly valve
US3566660A (en) * 1968-02-28 1971-03-02 Burroughs Corp Manufacturing method to produce printing type
JPS5349332A (en) * 1976-10-16 1978-05-04 Kubota Ltd Butterfly valve
JPS56101437U (de) * 1979-12-29 1981-08-10

Also Published As

Publication number Publication date
FR2674600B1 (fr) 1993-07-09
FR2674600A1 (fr) 1992-10-02
EP0507652A1 (de) 1992-10-07
DE69202190D1 (de) 1995-06-01

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