This paper outlines the shift-by-wire system and details its major technological development items. In today's motorized society, various automotive technologies continue to evolve every day. Amid this trend, a new concept with respect to automatic transaxle gearshifting has been developed. In order to materialize a new concept for shifting operation with a universal design in mind, a system has been developed: a shift-by-wire system developed specifically for hybrid vehicles. The shift-by-wire system consists of the following main components: the gear selection module, hybride Electronic Control Unit (ECU), parking control ECU, power supply ECU, parking actuator, hybride transxale, and shift position indicator light. The greatest advantage of this new system is the lack of constraints associated with the conventional mechanical linkage to the transaxle. This allows freedom of design for the gear selection module. A revolutionary improvement in the ease of shifting has been realized by taking full advantage of this design freedom. In addition, this system contributes to an innovative design. For improved ease of operation, the operation force of the shift lever of this system has been dramatically reduced. For parking, the driver can engage the parking mechanism of the transaxle at the touch of a switch. Furthermore, the shift lever is compactly housed in the instrument panel, harmonizing with the advanced design atmosphere in the cockpit. A brief description of the countermeasures against human error will be given, in which a combination of the shift-by-wire system and the momentary type gear selection, module is brought into full play. With the conventional shift lever, countermeasures against human error are taken on the hardware, such as a shift lock mechanism or a shift select button on the lever, or a shift control mechanism in the transaxle. In the shift-by-wire system, the combination of features with the momentary type gear selection module is brought into full play in order to provide countermeasures against human error solely through ECU control. Thus, it does not require any hardware-based countermeasures at the gear selection module. Unlike the conventional shift lever, which is linked mechanically to the shift selection mechanism in the transaxle and directly transmits an in-proper shift operation, with the shift-by-wire system the ECU can pass judgement to take a countermeasure. Specifically, if the hybrid ECU determines that an improper shift operation has been made, it controls the shifting to the safe side and alerts the driver


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    Titel :

    Toyota's new shift-by-wire system for hybrid vehicles


    Weitere Titelangaben:

    Toyotas neue elektronische Getriebeschaltung für Hybridfahrzeuge


    Beteiligte:
    Kobiki, Y. (Autor:in) / Inoue, Y. (Autor:in) / Sekiguchi, S. (Autor:in) / Itoh, T. (Autor:in) / Kamio, S. (Autor:in)


    Erscheinungsdatum :

    2004


    Format / Umfang :

    6 Seiten, 12 Bilder




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Toyota's New Shift-by-Wire System for Hybrid Vehicles

    Kobiki, Y. / Inoue, Y. / Sekiguchi, S. et al. | British Library Conference Proceedings | 2004


    Toyota's New Shift-by-Wire System for Hybrid Vehicles

    Kamio, Shigeru / Sekiguchi, Sumiko / Itoh, Taku et al. | SAE Technical Papers | 2004


    Toyota's New Shift-by-Wire System for Hybrid Vehicles

    Kobiki, Y. / Inoue, Y. / Sekiguchi, S. et al. | British Library Conference Proceedings | 2004



    Development of Toyota's Transaxle for Mini-Van Hybrid Vehicles

    Umeyama, Mitsuhiro / Ozeki, Tatsuya | SAE Technical Papers | 2002