Browse Publications Technical Papers 2019-01-1591
2019-06-05

Numerical Prediction and Verification of Noise Radiation Characteristics of Diesel Engine Block 2019-01-1591

To assess the contribution of structure-borne noise from an engine, it is critical to characterize the dynamic and vibro-acoustic properties of the engine components and assembly. In this paper, a component level study of a three-cylinder diesel engine block is presented. Virtual analysis was done to predict the natural frequencies and mode shapes of an engine block in the first step. Then, these results were used to decide the optimum test locations and an experimental modal test was conducted on the engine block. The initial virtual model results for the natural frequencies and mode shapes were correlated with the results from test. Then, the virtual model was updated with the damping derived from experimental modal test to match the vibration frequency response functions. Further, the virtual model was used for prediction of vibro-acoustic transfer functions. The vibro-acoustic transfer functions were also obtained from test. The results of transfer function were correlated with the test. In future, we plan to use this approach for prediction of the vibration and vibro-acoustic transfer functions for sub-assembly and eventually entire engine assembly to be able to use the models to predict the structure-borne noise from an engine.

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 of a Technique for Using Oil Viscosity to Reduce Noise Radiated from the Oil Pan

1999-01-1759

View Details

TECHNICAL PAPER

56 Development of two-cylinder liquid-cooled utility gasoline engine models with twin balancer shafts

2002-32-1825

View Details

TECHNICAL PAPER

Measurement of Fuel Injection Pump Sound Power Using Acoustic Intensity Techniques

930200

View Details

X