This paper describes a dual-track magnetic crankshaft and camshaft position sensor configuration. It uses semiconductor sensors such as magnetoresistors to pick up the magnetic flux modulation created by a toothed wheel rotating across a permanent magnet. This sen-sor's magnetic configuration, with a complementary geometry, enhances the accuracy and repeatability of the position pulses. This is critical in obtaining the engine-velocity measurement precision necessary to detect engine misfires as mandated by the OBD-II legislation. The complementary geometry also makes for a more robust design. Finally, the concept can be used for cam-shaft position sensing, with power-on capability.


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    Title :

    Magnetic Crankshaft and Camshaft Position Sensors with a Complementary Geometry


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1998



    Publication date :

    1998-02-23




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Magnetic crankshaft and camshaft position sensors with a complementary geometry

    Lequesne,B. / Schroeder,T. / General Motors Global Res.a.Dev.Operations,US | Automotive engineering | 1998


    Magnetic Crankshaft and Camshaft Position Sensors with a Complementary Geometry

    Lequesne, B. / Schroeder, T. / Society of Automotive Engineers | British Library Conference Proceedings | 1998