The world's first Variable Cylinder Management (VCM) system for large motorcycles, which will achieve both high power and low fuel consumption, has been developed. The system uses a mass production in-line four-cylinder engine which has a displacement of 1137 cm₃ as the base engine. The VCM system is capable of increasing and decreasing the number of working cylinders between 2-cylinder, 3-cylinder and 4-cylinder operations by modifying some parts of the base engine. Utilizing throttle valves installed on each cylinder, the throttle valves for continuously operating the regularly working cylinders and the on-demand working cylinders are controlled by three motors, which divide them into three independent lines. In order to improve fuel consumption by reducing the pumping loss of the non-working cylinders, the engine is equipped with hydraulically operated intake and exhaust valve deactivating mechanisms. It is very important for the posture control of the moving motorcycle to prevent abrupt changes of engine power output when the number of working cylinders is changed. In order to prevent such abrupt changes, the newly developed VCM system controls engine power output using the harmonized control of the three-system-independent Throttle-by-Wire (TBW) and the intake and exhaust valve deactivating system. Also, the fuel consumption in New European Driving Cycle (NEDC) mode is improved by approximately 46% as compared with the base motorcycle while clearing the EURO3 exhaust emission regulation values. Power output characteristics equivalent to those of the base engine are achieved. In this paper, the outline of the VCM system, the effective way of reducing output change when switching the number of working cylinders, and the effects of the improvement in fuel consumption are described.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Development of Variable Cylinder Management System for Large Motorcycles- An Effective Way of Reducing Output Change at Switching of the Number of Working Cylinders


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Maehara, Hayato (Autor:in) / Saito, Shinji (Autor:in) / Kitawaki, Shunsuke (Autor:in) / Tsukui, Takaaki (Autor:in) / Abe, Takeru (Autor:in)

    Kongress:

    Small Engine Technology Conference & Exposition ; 2010



    Erscheinungsdatum :

    28.09.2010




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Development of Variable Cylinder Management System for Large Motorcycles

    Maehara, Hayato / Saito, Shinji / Tsukui, Takaaki et al. | SAE Technical Papers | 2009


    Development of variable cylinder management system for large motorcycles

    Maehara,H. / Saito,S. / Abe,T. et al. | Kraftfahrwesen | 2009


    Development of Advanced Plating System for Cylinder Bores of Motorcycles

    Kato, Hidezumi / Muramatsu, Hitoshi / Takahashi, Naoyuki et al. | SAE Technical Papers | 2003


    Motorcycles Engine Management System

    Dell Orto, P. / Colombo, P. / Chiavazzo, E. et al. | British Library Conference Proceedings | 2005


    Motorcycles engine management system

    Dell'Orto, Pierluigi / Colombo, Paolo / Chiavazzo, Eliodoro et al. | Tema Archiv | 2005