Title: Vibration suppression of a car engine frame via tuned vibration absorber design

Authors: Jun Wei Sam; Hock Khuen Cheow; Jee-Hou Ho; Hoon Kiat Ng; Ai Bao Chai

Addresses: Faculty of Science and Engineering, Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia ' Inoque Engineering (M) Sdn. Bhd., 19, Jalan 51a/223, Seksyen 51a, 46100, Petaling Jaya, Selangor Darul Ehsan, Malaysia ' Faculty of Science and Engineering, Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia ' Faculty of Science and Engineering, Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia ' Faculty of Science and Engineering, Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia

Abstract: Whole body vibration degrades passengers' ride comfort which significantly affects their perception towards overall vehicle quality and induces health concerning issues under long term exposure. Motivated by the qualitative perception of whole body vibration experienced by the users during vehicle ride, this paper focuses on the vibration characterisation of a car engine frame and proposes a design and implementation of a tuned vibration absorber (TVA) as the vibration attenuation solution in addressing the vertical vibrations which are most perceived at the idling condition. TVA with frequency intentionally detuned to avoid exciting the 2nd structural resonance throughout the nominal engine idle operating frequency results in a vibration acceleration amplitude reduction of 30.3% at the 2nd order. The result shows that TVA is effective in attenuating tonal vibration at a particular troublesome frequency such as the 2nd order tonal vibration commonly experienced by conventional inline 4-cylinder engines.

Keywords: vibration analysis; vibration attenuation; TVA; tuned vibration absorber; inertia sensor; numerical simulation; MATLAB; resonance; car engine; short-time Fourier transform.

DOI: 10.1504/IJVNV.2020.112429

International Journal of Vehicle Noise and Vibration, 2020 Vol.16 No.1/2, pp.13 - 29

Received: 25 Jul 2019
Accepted: 02 Sep 2019
Published online: 15 Jan 2021 *

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