Generation mechanism and characteristics of idling rattle are systematized analytically by experiments on vehicle and digital simulation of nonlinear torsional vibration system for an inline four-cylinder four-cycle compact diesel engine.Jumping and hysteresis of the noise level are caused by both decreasing engine torque fluctuations while engine rotating velocity increases, and clutch-disc torsional characteristics of two-staged hardening spring. An improved clutch disc with a decreased noise level of 5 dB (A) was developed clarifying the optimum combination of disc characteristics, and permitting engine rotating velocity, where jumping occurs, below idling rotating velocity.


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    Title :

    Research on Idling Rattle of Manual Transmission


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE Surface Vehicle Noise and Vibration Conference ; 1985



    Publication date :

    1985-05-15




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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