Title: An assessment of in-cabin noise and vibration transfer in a hatchback

Authors: Chinnasamy Lakshmikanthan; Nikhil Ramesh; Omkar Sane; Aravindhakshan Lakshminarasimhan; Shyam Purusoth Parthasarathy

Addresses: Department of Mechanical Engineering, Amrita Automotive Research and Technology Center, Amrita University, Coimbatore, India ' Department of Mechanical Engineering, Amrita Automotive Research and Technology Center, Amrita University, Coimbatore, India ' Department of Mechanical Engineering, Amrita Automotive Research and Technology Center, Amrita University, Coimbatore, India ' Department of Mechanical Engineering, Amrita Automotive Research and Technology Center, Amrita University, Coimbatore, India ' Department of Mechanical Engineering, Amrita Automotive Research and Technology Center, Amrita University, Coimbatore, India

Abstract: India, being the fastest growing economy, has an ever increasing demand for transportation leading to increased competition between the manufacturers. Boundaries of the various parameters were pushed for saving time to market and cost. Among these parameters, the in-cabin noise level plays a major role in defining the comfort of the passengers. This article assesses the in-cabin noise levels of one of the entry level vehicles from a manufacturer. The whole study was conducted in two parts. The first part involving overall measurement of the noise levels in the vehicle and the second part is to study the major noise transfer mechanism. An acceleration test was first conducted to study the overall noise level. Various test conditions are designed to predict the major contributor of the in-cabin noise as part of the second step. The major contributing factors are engine noise and road and tyre interaction noise. Tests were repeated to eliminate the road noise. Noise levels measured in the cabin show that the airborne noise is the major contributor.

Keywords: in-cabin noise; transfer mechanism; engine noise; road-tyre interaction noise; airborne noise; vehicle noise; vibration transfer; vehicle vibration; hatchbacks; passenger comfort; road noise.

DOI: 10.1504/IJVNV.2016.081823

International Journal of Vehicle Noise and Vibration, 2016 Vol.12 No.4, pp.292 - 301

Available online: 25 Jan 2017 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article