PROBLEM TO BE SOLVED: To provide a simple-structured, negative pressure supply mechanism of a negative pressure type booster that can supply negative pressure to a brake booster mechanism, regardless of a supercharged state of a supercharger.SOLUTION: A negative pressure supply mechanism of a negative pressure type booster comprises: an intake path for supplying intake air from an intake air inlet port to a suction port via a supercharger and a throttle valve; and a negative pressure transmission path branching from the intake path between the throttle valve and the suction port, and supplying intake air negative pressure to a brake booster. The negative pressure supply mechanism of the negative pressure type booster is provided with: a diffuser for generating negative pressure by introducing intake air of positive pressure supercharged by the supercharger, from a downstream side beyond the throttle valve; a recirculation path for recirculating passing gas of the diffuser to a downstream side of the intake air inlet port; a recirculation path check valve for blocking ventilation to the diffuser from the downstream side of the intake air inlet port, in the middle of the recirculation path; a coupling path connecting the negative pressure transmission path to the diffuser; and a coupling path check valve for blocking ventilation from the diffuser to the negative pressure transmission path, in the middle of the coupling path.SELECTED DRAWING: Figure 1

    【課題】簡易な構成にて、過給機の過給状態に関わらず、ブレーキ倍力機構に負圧を供給できる負圧式倍力装置の負圧供給機構を提供する。【解決手段】吸気取込口から過給機及びスロットルバルブを介して吸気ポートに吸気を供給する吸気経路と、スロットルバルブと吸気ポートとの間の吸気経路から分岐され、ブレーキ倍力装置に吸気負圧を供給する負圧伝達路とを備える負圧式倍力装置の負圧供給機構である。過給機で過給された正圧の吸気がスロットルバルブよりも下流から導入されることで負圧を生成するデフューザと、デフューザの通過気体を吸気取込口の下流に還流させる還流路と、還流路の途中で、吸気取込口の下流からデフューザへの通気を阻止する還流路用逆止弁と、負圧伝達路とデフューザとの間を繋ぐ連結路と、連結路の途中で、デフューザから負圧伝達路への通気を阻止する連結路用逆止弁とを備える。【選択図】図1


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    NEGATIVE PRESSURE SUPPLY MECHANISM OF NEGATIVE PRESSURE TYPE BOOSTER


    Weitere Titelangaben:

    負圧式倍力装置の負圧供給機構


    Beteiligte:
    KUWATA MASASHI (Autor:in)

    Erscheinungsdatum :

    2018-11-08


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF



    NEGATIVE PRESSURE TYPE BOOSTER

    AWAJI MASAHIRO | Europäisches Patentamt | 2020

    Freier Zugriff

    NEGATIVE-PRESSURE-TYPE BOOSTER

    ISHIKAWA KENTA | Europäisches Patentamt | 2019

    Freier Zugriff

    NEGATIVE PRESSURE TYPE BOOSTER

    HATTORI MASABUMI / TANE DAIKI / AWAJI MASAHIRO | Europäisches Patentamt | 2021

    Freier Zugriff

    NEGATIVE-PRESSURE TYPE BOOSTER

    SAKAI TOMOYASU / OYAMA HIROSHI / AZUMA NAOKI | Europäisches Patentamt | 2016

    Freier Zugriff

    NEGATIVE PRESSURE TYPE BOOSTER

    HIROTA NORIYUKI / HATTORI MASABUMI | Europäisches Patentamt | 2018

    Freier Zugriff