The authors studied two algorithms for road slope estimation to avoid needless shifting when vehicles with automatic transmissions are running uphill and downhill. One algorithm makes an estimation using a longitudinal acceleration sensor and the other makes an estimation using estimated vehicle output torque. The former is expected to estimate road slope more accurately than the latter, but the former is more expensive because an additional acceleration sensor is needed. The two algorithms were implemented on the transmission control unit and compared experimentally. The authors found the latter could estimate road slope accurately enough to avoid needless shifting.


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    Title :

    A study on road slope estimation for automatic transmission control


    Additional title:

    Verfahren zur Steigungserkennung für die Steuerung von Automatgetrieben


    Contributors:
    Ohnishi, H. (author) / Ishii, J. (author) / Kayano, M. (author) / Katayama, H. (author)

    Published in:

    JSAE Review ; 21 , 2 ; 235-240


    Publication date :

    2000


    Size :

    6 Seiten, 13 Bilder, 1 Tabelle, 6 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    A study on road slope estimation for automatic transmission control

    Ohnishi,H. / Ishii,J. / Kayano,M. et al. | Automotive engineering | 2000



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