The invention relates to a pneumatic brake assistance arrangement (1) with a mechanical combustion-engine-driven vacuum pump (10) and a vacuum brake assistance unit (40), whereby the brake assistance unit (40) comprises a vacuum chamber (42) which is connected with a suction port (17) of the pumping unit (18). The vacuum pump (10) comprises : an input shaft (20) which is directly driven by the combustion engine (12), a pumping unit (18) with a pump rotor (19) and the suction port (17), and a magneto-rheo!ogical clutch (16) being arranged between the input shaft (20) and the pump rotor (19), the clutch (16) comprising an input clutch body (24) and an output clutch body (22), a closed clutch liquid gap (26) between the two clutch bodies (22,24), the clutch liquid gap (26) being filled with a magneto-rheological clutch liquid (28), a shiftable permanent magnet element (30) being shiftable between an engaged position wherein the permanent magnet element's magnetic field penetrates the clutch liquid gap (26) with high magnetic flux and a disengaged position wherein the magnet element's magnetic field penetration flux in the clutch liquid gap (26) is less than in the engaged position, and a pneumatic control circuit for moving the permanent magnet element (30) between its engaged and its disengaged position, the pneumatic control circuit comprising a pneumatic actuation chamber (50) which is connected to the vacuum chamber (42) of the brake assistance unit (40) via a pneumatic conduit (46) and comprising a piston means (52) in the actuation chamber (50), whereby the piston means (52) directly shifts the permanent magnet element (30) into its engaged position when relatively high pressure is present in the vacuum chamber (42), and whereby the piston means (52) is pretensioned by a passive pretension element (44) into the disengaged or engaged position.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Pneumatic brake assistance arrangement


    Beteiligte:
    SQUARCINI RAFFAELE (Autor:in) / BARTALESI ELISA (Autor:in) / SQUARCINI (Autor:in)

    Erscheinungsdatum :

    2015-07-29


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen



    PNEUMATIC BRAKE ASSISTANCE ARRANGEMENT

    SQUARCINI RAFFAELE / BARTALESI ELISA / BUCCHI FRANCESCO | Europäisches Patentamt | 2015

    Freier Zugriff

    Pneumatic brake assistance arrangement

    SQUARCINI RAFFAELE / BARTALESI ELISA / BUCCHI FRANCESCO | Europäisches Patentamt | 2016

    Freier Zugriff


    BRAKE ASSISTANCE SYSTEM AND BRAKE ASSISTANCE METHOD

    KIM SUK HYUN / HONG JU PYO / RYU MYUNG JAE | Europäisches Patentamt | 2023

    Freier Zugriff

    PNEUMATIC BRAKE SYSTEM

    TANAKA KATSUNORI / OTA YUSUKE | Europäisches Patentamt | 2022

    Freier Zugriff