Based on the results of the research carried out for ABS and CBS a new brake system which combines these two systems (hereinafter referred to as CBS-ABS) has been studied and installed on a touring type motorcycle with engine displacement of 1100 cm3 for the first time. In this paper, the construction and function of this CBS-ABS will be first explained, and then the results of deceleration tests and motorcycle behavior during ABS actuation will be discussed. Tests were carried out with two HONDA ST1100 motorcycles. The first one is equipped with CBS-ABS as it is produced from 1996 and the other one has the solenoid controlled ABS as it was in production from 1992 to 1995. The results can be summerized als following: first, the use of a motor driven ABS contributed to reductions in brake system mass by 1.2 kg (-22 %) and volume by 375 cm3 (-21 %). These reductions in mass and volume, combined with another reduction in the mass of 0.8kg, made it possible to better realize a CBS-ABS which can be mounted on a motorcycle. Second, higher deceleration was obtained throughout the entire range of input force and road surface friction levels with both hand and foot operations. With hand input the maximum generated deceleration increased from 7.5 m/s2 to 9.3 m/s2 and with foot input increased from 3.9 m/s2 to 9.1 m/s2 compared to the conventional solenoid controlled ABS. Third, as for motorcycle behavior during ABS actuation with hand input, pitch rate was minimized for all road surface friction levels due to appropriate distribution of brake force by CBS-ABS to the rear wheel and smooth control of hydraulic pressure by motor driven ABS. Fourth, in addition to these improvements (1-3) which were investigated in this paper and expressed in numerical results the CBS-ABS offers essential additional benefits which can be summarized as ,easy and simple operation'. The rider is released from the demanding task ot brake distribution and does not need to be concerned about wheel lock in different road conditions. Furthermore no special operation is required so that no change ot braking operation or particular adaptation to the system is necessary.


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    Title :

    Combination of antilock brake system (ABS) and combined brake system (CBS) for motorcycles


    Contributors:
    Thiem, M. (author) / Kato, M. (author) / Matsuto, T. (author) / Tanaka, K. (author) / Ishihara, H. (author) / Hayashi, T. (author)


    Publication date :

    1996


    Size :

    12 Seiten, 13 Bilder, 1 Tabelle, 9 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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