1991-11-01

Measurement of Structural Attenuation of a Diesel Engine and its Applications for Reduction of Noise and Vibration 912710

Structural attenuation of a running diesel engine measured by a new technique showed a constant value regardless of engine speeds. It was verified by this result that structural attenuation is a physical quantity unique to the structure of each engine and, therefore, a good indicator for evaluation of low noise engine structure. In addition, a hydraulic excitation test rig was devised to measure structural attenuation directly and to make effective use of it for noise reduction. Based on the accurate measurements by the excitation test rig, modal analysis and system simulation were conducted for implementation of countermeasures against noise.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Development and Validation of an Acoustic Encapsulation to Reduce Diesel Engine Noise

2007-01-2375

View Details

TECHNICAL PAPER

Engine Exhaust Noise Test Facility

730427

View Details

JOURNAL ARTICLE

Design and Evaluation of Output Profile Shaping of an Internal Combustion Engine for Noise & Vibration Improvement

2014-01-1683

View Details

X