Abstract

Tenneco is one of the world's leading designers, manufacturers, and marketers of automotive products for original equipment and aftermarket customers worldwide. Through our four business groups, DRiV, Performance Solutions, Clean Air and Powertrain, Tenneco is driving advancements in global mobility by delivering technology solutions for light vehicles, commercial trucks, off-highway, industrial, motorsport and the aftermarket. (Tenneco Web Page)

Engineering teams at Clean Air business group supply exhaust systems for both gasoline and diesel engines to meet both emissions and acoustic related regulations.

Exhaust systems are primarily divided into two subsystems: the hot end and the cold end. The hot end part of exhaust system includes components like manifolds, turbochargers, catalytic converters, DOC, DPF and SCR systems with dosing module and mixers. The cold end part of the exhaust system includes resonators, mufflers, tailpipes, and other devices for attenuating engine and flow noise. This presentation will focus on the computational method used at Tenneco for developing and validating cold end system to meet overall flow noise targets. Examples of exhaust system modeling for different components will be presented and, in some cases, test results and correlation will be discussed.

Slide animations

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Presenter Bio - Figen Lacin

Figen Lacin is manager of CFD team at Tenneco. She leads engineering team working on thermal, fluid and acoustics modeling to develop exhaust aftertreatment systems and in house software tool development. She has been working at Tenneco over 22 years. She has her PhD in Mechanical Engineering and B.Sc. in Aeronautical Engineering.