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某乘用车加速异响问题的排查及改进
邢维者
2021, 46(17):
47-50.
DOI: 10.16638/j.cnki.1671-7988.2021.017.013
Taking the abnormal acceleration noise of a passenger vehicle as an example, the problem is checked and
improved by means of test. First of all, the phenomenon of the problem point and the occurrence condition were evaluated
subjectively and tested objectively, and 350 Hz~450 Hz was identified as abnormal sound frequency band. Secondly,testing
the vibration on the powertrain and dismantling the parts, the correlation between the acceleration abnormal noise and the
torsional vibration of the crankshaft is confirmed. Finally, by testing the torsional vibration of the crankshaft on the vehicle
and improving the working frequency of the torsional vibration damper, the amplitude of the torsional vibration of the
crankshaft is reduced and the abnormal acceleration noise is eliminated.
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