Assessment of Combustion Mechanical Noise Separation Techniques on a V8 Engine Siemens Industry Software

Format:

Conference/Event

Author/Creator:

Bianciardi, Bianciardi, author.

Contributor:

Delvecchio, Simone

Gryllias, Konstantinos

Janssens, Karl

Manna, Claudio

Conference Name:

Noise and Vibration Conference and Exhibition (2017-06-12 : Grand Rapids, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2017

Summary:

AbstractThe noise radiated by an ICE engine results from a mixture of various complex sources such as combustion, injection, piston slap, turbocharger, et cetera Some of these have been categorized as combustion related noise and others as mechanical noise. Of great concern is the assessment of combustion noise which, under some operating conditions, is likely to predominate over the other sources of noise. The residual noise, produced by various other sources, is commonly referred to as mechanical noise. Being able to extract combustion and mechanical noise is of prime interest in the development phase of the engine and also for diagnostic purposes.This paper presents the application of combustion mechanical noise separation techniques on a V8 engine. Three techniques, namely the multi regression analysis, the classical Wiener filter and the cyclostationary (synchronous) Wiener filter, have been investigated. The techniques have been applied to microphone recordings measured at one meter distance from an engine running on a test bench. Reference in-cylinder pressure sensors have been instrumented and synchronously acquired together with the microphones. Strengths and weaknesses of the techniques are assessed and presented in the paper.Finally a source separation technique is applied as a pre-processing step to the sound recordings measured on a microphone array. Sound source localization then allows to localize and quantify the combustion and mechanical sources of noise on the engine. This is illustrated with an application example

Notes:

Vendor supplied data

Publisher Number:

2017-01-1846

Access Restriction:

Restricted for use by site license