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Modern day customer awareness on noise and comfort is extremely increasing, which demands OEM manufacturers to focus on NVH attributes and to meet environmental legislative requirements. Noise generation mechanism in Air Intake System (AIS) is one of the major sources for vehicle interior noise and it occurs mainly because of air column oscillation by sharp pressure pulsation from opening and closing of valves in engine cylinders. Air intake system designer has immense challenges to attenuate intake noise during design stage, in order to meet the vehicle interior noise requirements by using multiple resonators to tune the desired broad band frequencies and to choose the optimum number of resonators. The placement of resonator on both the clean duct and dirty sides is also a key challenge for better noise reduction from air intake system.

Noise Pollution has become one of the major environmental concerns for global automotive industry in the current era. Air Induction System (AIS) plays an important role in engine performance and vehicle noise. An ideal design of AIS provides debris free air for combustion and also reduces the engine noise heard at snorkel. Acoustic engineers always face challenges for achieving optimized AIS design with packaging space constraints. Conventionally, AIS optimization is an iterative procedure. This paper emphasizes a one dimensional (1D) approach for optimization of AIS to meet the functional requirements for flow and acoustics. Air flows from the snorkel to the intake manifold whereas the sound propagates in the opposite direction. Suitable design of ducts, air box and resonators are required to attenuate the snorkel noise (SN) to meet the required sound pressure levels.