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Fast Acoustic Simulation of Downsized IC Engines
Published October 12, 2011 by Society of Automotive Engineers of Japan in Japan
Acoustic performance of downsized vehicle engines is a challenge for powertrain engineers. As engines become greener, their sizes become smaller and new high frequency noise sources become more apparent. In order to validate the engine's acoustic performance upfront, fast acoustic simulation techniques are required. With fast simulation techniques, higher frequencies can be addressed and more design iterations can be explored.
This paper presents some of the recent modeling and solver improvements in Boundary Element Methods (BEM) and Finite Element Methods (FEM) for powertrain acoustic simulation. The solutions are compared using simulation examples of turbocharger noise, engine noise and injector noise.