Optimization of Engine Mount Characteristics Using Experimental/Numerical Analysis

Abstract

In this paper an experimental/numerical technique is developed for engine mount optimization. The method is general and can be applied to optimize active and passive vibration isolators or absorbers in any mechanical systems or civil structures. Engine mount optimization techniques mostly rely on an accurate mathematical model of the whole vehicle, which in most cases is not available or is too difficult to develop. As a result, the current approach for selecting engine mounts for a vehicle is based upon trial and error which is very time-consuming and expensive. The proposed technique counts upon experimental data for optimization and does not require any mathematical model of the vehicle or its components. The required experiments are similar to the current trial-and-error based experiments performed on a vehicle for mounts selection. The method is evaluated experimentally using a quarter car model and the results corroborate the proposed optimization method.

Modelling and verification of three dof engine mount system

“…3 to 11 show the acceleration response of the simulated model as compared to the experimental result. As being indicated in Table 1 (Foumani et al, 2003). Precisely, the cyclic motion of crankshaft is the main reason of the phenomenon which will result in high-frequency, small-amplitude vibrations transmitting to the chassis (Fakhari et al, 2015).…”

Computational model of conventional engine mounts for commercial vehicles: validation and application

“…Moreover, various research works on modelling and analysis of engine mounts have been presented [15][16][17]. Also, Foumani et al [18], Alkhatib et al [19], Arzanpour et al [20], Ahn et al [21], Vahid et al [22] have carried out research on optimisation of the passive engine mount models. Although there is a substantial body of published literature in the area of vibration isolation, most of it focuses on the isolation problems in cars, trains and aircraft applications.…”

Dynamic model of a two-cylinder four-stroke internal combustion engine and vibration treatment

“…However, since the development of such a model would take a long time and considerable effort, the engine and chassis are treated separately. 14–16 Even a dynamic model, including the fundamental dynamic components of the engine beside the mounts, is too complicated. Therefore, the engine mounts are mostly designed via a simplified model named a rigid-body model.…”