EP0433518A1 - Vorrichtungen zum Steuern eines Fluiddurchflusses - Google Patents

Vorrichtungen zum Steuern eines Fluiddurchflusses Download PDF

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Publication number
EP0433518A1
EP0433518A1 EP89440141A EP89440141A EP0433518A1 EP 0433518 A1 EP0433518 A1 EP 0433518A1 EP 89440141 A EP89440141 A EP 89440141A EP 89440141 A EP89440141 A EP 89440141A EP 0433518 A1 EP0433518 A1 EP 0433518A1
Authority
EP
European Patent Office
Prior art keywords
axis
plate
housing
rotation
casing
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Withdrawn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
EP89440141A
Other languages
English (en)
French (fr)
Inventor
Didier Theron
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.)
Mecaplast SAM
Original Assignee
Mecaplast SAM
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 Mecaplast SAM filed Critical Mecaplast SAM
Priority to EP89440141A priority Critical patent/EP0433518A1/de
Publication of EP0433518A1 publication Critical patent/EP0433518A1/de
Withdrawn legal-status Critical Current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 relates to improvements to devices intended for regulating the flow rate of fluids and in particular, but not exclusively, the air intake flow rate in internal combustion engines equipped with injection systems.
  • the present invention seeks improvements to these devices aimed at enabling them to overcome these drawbacks and these constraints.
  • the butterfly is molded from a thermoplastic material with low thermal inertia and a low coefficient of friction, such as, for example, polytetrafluoroethylene (TEFLON) or the like, and it is in a planar shape with a generally elliptical shape.
  • TEFLON polytetrafluoroethylene
  • the term "ellipse” or “elliptical” will be used here to define this shape, it being understood that the precise shape of said butterfly, as well as, as will be seen further on, that of the housing, which correspond, must be adapted to the specificity of the progressiveness desired for the acceleration of the engine, and consequently that of the vehicle.
  • said butterfly has the shape of an ellipse, and it is mounted tilting about an axis arranged in the major axis of said ellipse, in a housing whose central volume is delimited by two curved surfaces eccentric each by relative to the area swept by the two half-ellipses located on each side of said axis, so that the rotation of the butterfly around its axis determines the opening (or closing) of two passages with the desired progressiveness, even in the case brutal operation of the accelerator.
  • the barrel or casing is molded from a thermoplastic material, preferably of the polyamide or polyimide type, which is both very light and very resistant, this molding making it possible to create a shape of substantially elliptical section (as defined above). ), comprising, at the level of the butterfly, rounded walls eccentric with respect to the surfaces swept by the two sides of the butterfly.
  • the butterfly instead of being made of brass, as in the past, in order to be able to withstand the high pressures (or depression) at closing, which involved a complicated mechanical assembly, consists of a simple piece of material without thermal inertia, directly molded on the axis, of elliptical shape corresponding to that of the housing, said axis being along the major axis of said ellipse, the two faces of said butterfly having at most only the length of the minor axis of l 'ellipse, which gives it better stiffness. Furthermore, the use of the proposed materials considerably reduces the icing effects, taking into account the low thermal inertia of the components, thereby compensating for the difference in elastic modulus of the proposed material compared to those of metal.
  • the device according to the invention consists, in known manner, of a casing or barrel 1 of generally cylindrical appearance and of a butterfly 2 rotating around an axis 3, perpendicular to the axis of symmetry of the barrel 1.
  • the cross section of the barrel 1 is an ellipse, that is to say that it was in the general shape of a cylinder with elliptical generator, and the butterfly 2 also has the shape of an ellipse, the axis 3 being mounted along the long axis of this ellipse.
  • the barrel in the pivoting zone of the butterfly, has two rounded surfaces 4-4 ′, eccentric with respect to the surfaces 5-5 ′, swept by the two extreme edges 6-6 ′ of the butterfly 2.
  • L 'space between the pairs of surfaces 5/6, 5 ′ / 6 ′ represents the passage offered to the air according to the angle of inclination of the butterfly 2 ′, determined by the degree of depression of the accelerator.
  • the elliptical butterfly 2 is of decreasing thickness from the center towards the edges, and that the edges 6-6 ′ undergoing the most brutal forces are those which are the least distant from the axis 3, which ensures a satisfactory stiffness in the butterfly.
  • the invention is not limited to air intake boxes in internal combustion engines, but can be applied with all its advantages to all devices for adjusting the flow rate of any fluid.
  • the proposed device allows a setting at closing of about 8 ° to 10 ° relative to the horizontal, which further reduces the effects that would cause slight icing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)
EP89440141A 1989-12-21 1989-12-21 Vorrichtungen zum Steuern eines Fluiddurchflusses Withdrawn EP0433518A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP89440141A EP0433518A1 (de) 1989-12-21 1989-12-21 Vorrichtungen zum Steuern eines Fluiddurchflusses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89440141A EP0433518A1 (de) 1989-12-21 1989-12-21 Vorrichtungen zum Steuern eines Fluiddurchflusses

Publications (1)

Publication Number Publication Date
EP0433518A1 true EP0433518A1 (de) 1991-06-26

Family

ID=8203043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89440141A Withdrawn EP0433518A1 (de) 1989-12-21 1989-12-21 Vorrichtungen zum Steuern eines Fluiddurchflusses

Country Status (1)

Country Link
EP (1) EP0433518A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2694963A1 (fr) * 1992-08-21 1994-02-25 Solex Corps de papillon à conduit d'admission de forme évolutive et procédé de fabrication d'un tel corps.
WO1994012781A1 (de) * 1992-11-28 1994-06-09 Robert Bosch Gmbh Drosselvorrichtung für eine brennkraftmaschine und verfahren zur herstellung von dosierwandungen in der drosselvorrichtung
EP1065360A3 (de) * 1999-06-29 2001-08-29 Siemens Canada limited Kunststoff-Drosselklappenstutzen
US6764062B1 (en) 1999-06-29 2004-07-20 Siemens Vdo Automotive, Inc. Plastic throttle body
EP2184468A1 (de) * 2008-11-11 2010-05-12 Honda Motor Co., Ltd Einlasssystem für Verbrennungsmotoren

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3857406A (en) * 1973-01-02 1974-12-31 Ferro Mfg Corp Valve
DE2558272A1 (de) * 1975-12-23 1977-07-07 Elco Oel & Gasbrenner Drosselklappe
EP0023133A1 (de) * 1979-07-19 1981-01-28 Kerotest Manufacturing Corporation Klappenventil aus Kunststoff
EP0109792A1 (de) * 1982-11-22 1984-05-30 General Motors Corporation Ventilzusammensetzung und Verfahren zur Bearbeitung
DE3432766A1 (de) * 1984-09-06 1986-03-13 Robert Bosch Gmbh, 7000 Stuttgart Drosselklappe
FR2575518A1 (fr) * 1984-12-28 1986-07-04 Inst Francais Du Petrole Ensemble logement et papillon d'un dispositif de controle de debit de gaz
JPS6220639A (ja) * 1985-07-19 1987-01-29 Keihin Seiki Mfg Co Ltd 多バルブエンジン用バタフライ型気化器
US4786031A (en) * 1987-11-13 1988-11-22 Phillips Petroleum Company Fiber reinforced thermoplastic butterfly valve element

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3857406A (en) * 1973-01-02 1974-12-31 Ferro Mfg Corp Valve
DE2558272A1 (de) * 1975-12-23 1977-07-07 Elco Oel & Gasbrenner Drosselklappe
EP0023133A1 (de) * 1979-07-19 1981-01-28 Kerotest Manufacturing Corporation Klappenventil aus Kunststoff
EP0109792A1 (de) * 1982-11-22 1984-05-30 General Motors Corporation Ventilzusammensetzung und Verfahren zur Bearbeitung
DE3432766A1 (de) * 1984-09-06 1986-03-13 Robert Bosch Gmbh, 7000 Stuttgart Drosselklappe
FR2575518A1 (fr) * 1984-12-28 1986-07-04 Inst Francais Du Petrole Ensemble logement et papillon d'un dispositif de controle de debit de gaz
JPS6220639A (ja) * 1985-07-19 1987-01-29 Keihin Seiki Mfg Co Ltd 多バルブエンジン用バタフライ型気化器
US4786031A (en) * 1987-11-13 1988-11-22 Phillips Petroleum Company Fiber reinforced thermoplastic butterfly valve element

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 196 (M-601)(2643) 24 juin 1987, & JP-A-62 20639 (KEIHIN SEIKI MFG CO LTD) 29 janvier 1987, *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2694963A1 (fr) * 1992-08-21 1994-02-25 Solex Corps de papillon à conduit d'admission de forme évolutive et procédé de fabrication d'un tel corps.
EP0589733A1 (de) * 1992-08-21 1994-03-30 Magneti Marelli France Drosselklappengehäuse mit erweiterbarer Einlassleitung und Verfahren
US5374031A (en) * 1992-08-21 1994-12-20 Solex Butterfly-valve assembly having an admission passage of progressively-changing shape, and method of manufacturing same
WO1994012781A1 (de) * 1992-11-28 1994-06-09 Robert Bosch Gmbh Drosselvorrichtung für eine brennkraftmaschine und verfahren zur herstellung von dosierwandungen in der drosselvorrichtung
US5465696A (en) * 1992-11-28 1995-11-14 Robert Bosch Gmbh Throttle appliance for an internal combustion engine and method of manufacturing metering walls in the throttle appliance
EP1065360A3 (de) * 1999-06-29 2001-08-29 Siemens Canada limited Kunststoff-Drosselklappenstutzen
US6764062B1 (en) 1999-06-29 2004-07-20 Siemens Vdo Automotive, Inc. Plastic throttle body
EP2184468A1 (de) * 2008-11-11 2010-05-12 Honda Motor Co., Ltd Einlasssystem für Verbrennungsmotoren

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