Title: Optimum design of crank balance for reducing engine vibrations of scooter motorcycles

Authors: Hong-Sen Yan, Fu-Chen Chen

Addresses: Department of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan 70101, ROC. ' Department of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan 70101, ROC

Abstract: This work presents an approach for reducing engine vibrations of scooter motorcycles based on the optimum design of the engine balance mass to minimize the forces transmitted to the chassis. The balance of the slider-crank mechanism is introduced first. Then, based on vector loop method, kinematic coefficients, and power equation, we derived kinematic and kinetic equations for the system. A numerical example is given to illustrate the application of this optimum design technique based on Augmented Lagrange Multiplier algorithm.

Keywords: centre of percussion; chassis; dynamic analysis; kinematic coefficient; kinematic energy; moment of inertia; potential energy; resonant frequency; slider-crank mechanism; engine vibration; optimum design; crank balance; scooters; motorcycles; kinematics; kinetics.

DOI: 10.1504/IJVD.1994.061899

International Journal of Vehicle Design, 1994 Vol.15 No.6, pp.626 - 638

Published online: 28 May 2014 *

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