Interior Sound Quality Refinement Base on Mechanism Study of Crankshaft Impact Noise GAC Automotive Engineering Institute

Format:

Book

Conference/Event

Author/Creator:

Su, Su, author.

Contributor:

Cao, Xuelu

Chen, Hanshuang

Kong, Dandan

Xing, Weizhe

Xu, Yanghui

Yang, Qi

Conference Name:

WCX SAE World Congress Experience (2019-04-09 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2019

Summary:

AbstractA rumbling noise is audible in a vehicle passenger compartment during acceleration. Mechanism detail of the rumbling noise is studied. A series of preliminary transfer path experiments investigation on chassis dynamometer shows that the interior rumbling noise is mainly induced by abnormal crankshaft impact at particular crank angle. Spectrum analysis indicates that high level half order harmonic components significantly affects the rumbling noise. Multi-body dynamics model of the powertrain is developed to further investigate the root cause of the abnormal crankshaft impact. Experiment results are used to verify the numeric model. High deviation of main bearing forces at the crank angle 0° to 180° after the Fire Top Dead Center of the numbersl cylinder is considered to fundamentally induces the high level half order components. The force ripple coupled with the crankshaft resonance induces the crankshaft rumbling. Sensitivities analysis of various bearing seat structure, crankshaft structural parameters were carried out. The ladder frame, a stiffened crankshaft with bigger overlap and shortened the front end offset distance seem effectively reduce the rumbling impact and improve interior sound quality

Notes:

Vendor supplied data

Publisher Number:

2019-01-0772

Access Restriction:

Restricted for use by site license