Experimental Determination of an Engine's Inertial Properties DaimlerChrysler Corporation

Format:

Conference/Event

Author/Creator:

Liu, C. Q., author.

Conference Name:

SAE 2007 Noise and Vibration Conference and Exhibition (2007-05-15 : St. Charles, Illinois, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2007

Summary:

Determination of an engine's inertial properties is critical during vehicle dynamic analysis and the early stages of engine mounting system design. Traditionally, the inertia tensor can be determined by torsional pendulum method with a reasonable precision, while the center of gravity can be determined by placing it in a stable position on three scales with less accuracy. Other common experimental approaches include the use of frequency response functions. The difficulty of this method is to align the directions of the transducers mounted on various positions on the engine. In this paper, an experimental method to estimate an engine's inertia tensor and center of gravity is presented. The method utilizes the traditional torsional pendulum method, but with additional measurement data. With this method, the inertia tensor and center of gravity are estimated in a least squares sense. To validate this method, a uniform rectangular box was used as a test sample, of which the inertial properties are known. The experimental results have a difference of less than 2% compared with the theoretical results. A through discussion and test procedure is presented

Notes:

Vendor supplied data

Publisher Number:

2007-01-2291

Access Restriction:

Restricted for use by site license