Identification of Internal Noise Sources in Diesel Engines Current Affiliation: Dept. of Mechanical Engrg. Auburn Univ

Format:

Conference/Event

Author/Creator:

Yawata, Yoichiro, author.

Conference Name:

1983 SAE International Off-Highway and Powerplant Congress and Exposition (1983-09-12 : Milwaukee, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1983

Summary:

In order to identify noise sources in a diesel engine, specifically exciting forces such as combustion and piston slap, the so-called coherence method which utilizes relationships between the auto and cross spectra of cylinder pressure, cylinder liner acceleration and engine noise has been examined. Also, as an alternative, a multivariable regression analysis in one-third octave band auto spectra of each signal mentioned above has been made.It was shown that the simple coherence model studied does not seem useful for this particular type of noise source identification problem. However, the multivariable regression approach has yielded fairly reasonable results, though some problems have been found in accuracy.From this research, it was found that combustion noise is predominant for heavier engine load conditions, though at lower load and high speed conditions, piston slap noise becomes appreciable

Notes:

Vendor supplied data

Publisher Number:

831330

Access Restriction:

Restricted for use by site license