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Design and Optimization of Engine Mount

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Engine is consider as one of the main source in producing noise and vibration in vehicle. Engine mount is used between chasis and body to control engine vibration. The goal of the paper is introducing optimization method to find optimum value for engine mount specification based on random vibration method. Changing design parameters such as: location of engine mount, angle of instal, stiffness and damping coefficient of engine mount causes to change Natural frequency and vibration transmissibility ratio of system. For this purpose, full vehicle finite element model include chasis, body, suspension system, tires, seats, glosses and engine of typical van vehicle is provided and the effect of engine unbalances harmonic is applied on the model as a Power Spectral Density (PSD) form. Finally, driver seat PSD acceleration in three direction (longitudinal, lateral and vertical) is obtained. Design parameters (location, stiffness, damping coefficient of engine mount) change in specific range to find best system response. Final result shows that driver seat PSD acceleration can be considered as an optimum choice.
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Engine Mount Optimization; Stiffness; Damping; Location

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Yunhe Yu, Nagi G. Naganathan, Rao V. Dukkipati, “A literature review of automotive vehicle engine mounting systems”, Mechanism and machine theory 36, 123-142, 2001.

Thomas D. Gillespie, Fundamentals of Vehicle Dynamics (1 st edition, SAE, 1992).

J.Christopherson, G.Nakhaie Jazar, Dynamic behavior comparison of passive hydraulic engine mounts. part 2: Finite element analysis, Journal of sound and vibration 290, 1071-1090, 2006.

J.Christopherson, G.Nakhaie Jazar, Dynamic behavior comparison of passive hydraulic engine mounts.part 1: Mathematical analysis, Journal of sound and vibration 290, 1071-1090, 2006.

Li-Rong Wang, Jia-Cai Wang, Ichiro Hagiwara, An integrated characterestic simulation method for hyraulically damped Rubber mount of vehicle engine, journal of sound and vibration 286, 673-696, 2005.

Nak Kyu Lee, Heon Y. Kim, Joong Jae Kim, Design of Engine Mount Using Finite Element Method and Optimization Technique, SAE 980379.

A.Geisberger, A. Khajepour, F.Golnaraghi, Non-Linear modeling of hydraulic Mounts: theory and experiment, Journal of sound and vibration 249, 371-397, 2002.

L. J. Howell, Power Spectral Density Analysis of Vehicle Vibration using the Nastran Computer Program, SAE 740328.

D. E. Newland, An Introuduction to Random Vibration and Spectral Analysis ,Longman Publishing, ISBN 0 582 30530 6.

W. T. Thomson, Theory of Vibration with Application, ( 2nd edition, George Allen & Uniwin Ltd, 1993).

J. Bretl, Optimization of Engine Mount Systems to Minimize Vehicle Vibration, SAE 931322.

A. E. Duncan, Application of Modelling and Mount System Optimization to Light Duty Truck Ride Analysis, SAE 811313.

J. M. Baum and J. A. Bennett & T. G. Carne, Truck Ride Improvement using Analytical and Optimization Method, SAE paper No. 770609.

T.Jeong, R.Singh, Inclusion of measured frequency – AND Amplitude-Dependent mount properties in vehicle or machinery models, Journal of sound and vibration 245(3) ,385-415, 2001.

Tongue, Benson H., Yang, yean _Tzong, Platoon Collision Dynamics and Emergency Manueurering Iv: Intetra_platoon Collision Behavior and new Control Approch for platoon Operation Duning Vehicle Exit/Entry-Final Report, path research report UCB_ITS_PRR_94_25, University of California at Berekley, 1994.

Jhun-Sou Lin, K. Sunny Yim, Application of Random Vibration Test Methods for Automotive Subsystems Using Power Spectral Density (PSD), SAE 2000.


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