Optimization of noise and vibration in passenger car cabin

Vibration and sound in the comfort of the interior of the car are all factors which are normally considered by the customer to buy a vehicle. Basically a vehicle with a lot of vibration and noise has to be comfortable not adversely affect the comfort optimum for the vehicle acoustical comfort index (VACI) in the interior of the car. With reference to the relationship between the VACI the VDV is dependent while driving. Normally, the sound produced by the motor system can cause damage to human hearing system, stress, harassment and sometimes can reduce the concentration of driving that will result in a road accident. Since the vibration is a major contributor to noise levels, a study was conducted to obtain the vibration dose value (VDV) is on engine speed, a mathematical model was constructed to find the optimum value for the VDV to gain VACI better value by satisfying all the equations and constraints are identified based on the characteristics of the noise and vibration. By using optimization model is generated, automotive researchers will be able to make a benchmark for the vibration dose value for the index the better acoustic comfort in the interior of the vehicle.