In complying with a customer demand for improving low-speed maneuverability of commercial vehicles in narrow streets, a medium-duty truck with a mechanical linkage type four-wheel steering system with a hydraulic assist and a steering lock device is developed. A mode select gearbox allows a driver to select one of three rear-wheel steering modes; 2WS, same-phase 4WS, and opposite-phase 4WS. The steering lock device is locked during 2WS operation for preventing rear-wheel steering. An electronic control system is applied for easier mode selection, synchronization of locking and unlocking the steering lock device with a mode select operation, and vehicle speed limitation during 4WS operation. We made efforts particularly to suppress vehicle yaw motion when the vehicle is running in the same-phase 4WS mode. Several innovative new mechanisms are incorporated on this vehicle. This paper deals with these mechanisms and these functions.


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    Titel :

    Development of a Medium-Duty Truck with a Mechanical Linkage Type Four-Wheel Steering System


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Katoh, Hideo (Autor:in) / Minami, Kiyoshi (Autor:in) / Hata, Nohuo (Autor:in) / Torizuka, Takayoshi (Autor:in) / Watanabe, Yoshito (Autor:in)

    Kongress:

    International Truck & Bus Meeting & Exposition ; 1990



    Erscheinungsdatum :

    01.10.1990




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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