Flow Acoustics Analysis of Downsizing-Concepts
The reduction of the mass and cubic capacity while maintaining the performance is called Downsizing. This can be implemented for example by reducing the number of cylinders and turbo charging. The reduction in the number of cylinders and optimized combustion processes, in combination with turbo charging, changes the NVH behavior of the entire vehicle decisively. It requires new methods and technologies for downsizing concepts with suitable vibration comfort and acoustic behavior. The acoustics of intake and exhaust systems represent an important aspect in the context of Downsizing. A core competency in the field of Flow Acoustics at the VIRTUAL VEHICLE is the accurate prediction of the intake and exhaust noise of turbocharged engines based on improved simulation methods for the individual components such as turbocharger, muffler and exhaust after-treatment.