Four Wheeler’s Health Monitoring by Sound Level Measurement: A Case Study

Sound level emitted by vehicle components is having great importance in monitoring their health condition. Higher sound level from a vehicle than the specified not only signifies the sign of fault in the main component of automobile but also dangerous to the pedestrians. Over the time, moving parts of vehicle deteriorates and causes the higher level of sound is merely a guess. In this case study, attempt has been made to check the deterioration level of four different Honda city (diesel variant) cars on the basis of their emitted sound levels measured from various components and conditions. The cars were tested for mainly two conditions idle and moving and sound levels were recorded inside and outside the cabin. The cars have been classified on the basis of odometer reading and tested just after their regular service to remove the conditions of service lag. The measured levels of sound clearly state that the car started emitting the high level of sound over the time and can be said deteriorates with its use. The measured sound levels were also proven to be capable of detecting faults in some of the significant components of the vehicle.