Title: In situ identification of vehicle engine inertia properties

Authors: O. Vahid, A. Khajepour, F. Ismail, C.R. Urbaniak

Addresses: Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada. ' Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada. ' Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada. ' Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada

Abstract: A direct system identification method for vehicle engine rigid body inertia properties based on in situ measurements is presented in this work. One of the advantages of this method is the use of acceleration response measurements obtained from standard NVH tests performed on a vehicle. Since there is no need to separate the engine, there will be a considerable reduction in time required for experiment setup and execution. In addition, an alternative identification formulation is presented for cases where engine mount dynamic rates are not available. The proposed method has been applied to a pickup truck and the identified and actual results are presented and compared.

Keywords: rigid body interia; inertia properties; direct system identification; frequency response functions; vehicle engine inertia; acceleration response measurements; NVH; vehicle noise; vehicle vibration; harshness; pickup trucks.

DOI: 10.1504/IJVNV.2007.014398

International Journal of Vehicle Noise and Vibration, 2007 Vol.3 No.1, pp.46 - 69

Available online: 04 Jul 2007 *

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