Study of Turbocharger Whistle Noise and Its Reduction Into Passenger Cabin General Motors Tech. Centre India Pvt Limited

Format:

Conference/Event

Author/Creator:

Gupta, Gupta, author.

Contributor:

Manta, Eugenio

Vikram, MR

Conference Name:

Symposium on International Automotive Technology 2015 (2015-01-21 : Pune, India)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2015

Summary:

AbstractA turbocharger unit mainly consists of a centrifugal compressor and a turbine coupled together by a solid shaft. This is employed to boost the charge air pressure of the engine. Turbocharging in modern diesel and gasoline engines have become a common and essential operation to result higher power outputs, lower emissions, improved efficiency and refinements from a similar capacity of naturally aspirated engines.The automotive turbocharger system is a source of synchronous and asynchronous noises that should be eliminated or reduced for passenger comfort. Subjectively, a high whistle noise was audible in the passenger cabin during in a mid-rpm range drive in all gears in a 4 cylinder diesel vehicle. Objective noise and vibration data confirm the issue as unbalance whistle.A detailed study has been carried out to identify the source and radiating part of the unbalance whistle noise generated in a 4 cylinder diesel engine running a passenger car. This paper presents the work carried out to reduce unbalance whistle in passenger cabin. The paper is categorized in three segments. First section describes the NVH aspects of turbocharger. Second section describes the root-cause analysis and concept formulation for the noise problem. The final section describes the solution which reduces the whistle noise in passenger cabin

Notes:

Vendor supplied data

Publisher Number:

2015-26-0129

Access Restriction:

Restricted for use by site license