Elément d'étranglement rotatif pour moteur à combustion à allumage commandé

Drehschieber für Ottobrennkraftmaschine

Rotary-body type throttle for spark ignition internal combustion engine

Abstract

The invention makes vortices generated at the time opening a valve with the intermediate degree of opening small in a rotary-body type throttle valve of a spark ignition internal combustion engine so as to reduce the flow resistance. A rotary-body type throttle valve for a spark ignition internal combustion engine in which the valve comprises a valve casing 11 in the inside of which an intake passage 12a, 12b is formed with a rotary-body recess portion 12d which adopts a line intersecting a central axis 12c of the intake passage as an axis thereof being formed in the midst of the intake passage 12a, 12b, and a valve element 13 in a rotary-body shape which is rotatably fitted into the rotary-body recess portion 12d of the valve casing 11, and a communication passage 15 which makes'an upstream intake passage 12a and a downstream intake passage 12b sandwiching the rotary-body recess portion 12d of the valve casing 11 communicate with each other is formed in the valve element 13. A through hole 18 which is directed from the communication passage 15 of the valve element 13 in a direction intersecting a central axis 15a of the communication passage 15 and reaches only one of rotary outer surfaces of the valve element 13 is formed in the valve element 13.

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Patent Citations (5)

    Publication numberPublication dateAssigneeTitle
    JP-H10274062-AOctober 13, 1998Nissan Diesel Motor Co Ltd, 日産ディーゼル工業株式会社排気ブレーキ装置
    JP-H11141402-AMay 25, 1999Nippon Uoruburoo:Kk, 株式会社日本ウォルブロー膜型気化器
    US-4271096-AJune 02, 1981Walbro Far East, Inc.Carburetor
    US-5275373-AJanuary 04, 1994Robert Bosch GmbhRotary actuator
    US-5749335-AMay 12, 1998Ford Global Technologies, Inc.Barrel throttle valve

NO-Patent Citations (2)

    Title
    PATENT ABSTRACTS OF JAPAN vol. 1999, no. 01, 29 January 1999 (1999-01-29) & JP 10 274062 A (NISSAN DIESEL MOTOR CO LTD), 13 October 1998 (1998-10-13)
    PATENT ABSTRACTS OF JAPAN vol. 1999, no. 10, 31 August 1999 (1999-08-31) & JP 11 141402 A (NIPPON UORUBUROO:KK), 25 May 1999 (1999-05-25)

Cited By (3)

    Publication numberPublication dateAssigneeTitle
    EP-1371887-A1December 17, 2003Silfra S.P.A.Hahn mit Zeitschaltwerk
    EP-1388652-A2February 11, 2004Pierburg GmbHAnsaugkanalsystem
    EP-1388652-A3July 20, 2005Pierburg GmbHSystème de conduit d'admission