NVH Analysis of Engine Mount Bracket

Abstract

Noise, vibration and harshness are a vital part of automobile industry. Engine excitations are considered one of the dominant vibration sources in off-road vehicles. Current engine mounts are acceptable for vibration isolation but with the advent of the new design, it is important to analysis new design of engine mounts. Air Filter Bracket is used for engine mounting. This bracket is constrained on the top of the engine. Bracket is excited due to engine. Excitation is in time domain with Y-axis as acceleration in m/s2. The purpose of the present work is to reduce displacement and change natural frequency to avoid resonance. The air filter bracket is constrained and meshed to carry out FEA and frequency response is obtained to study resonance. The design changes for air filter bracket is carried out to keep the natural frequency away from the resonance.