Exhaust Silencers (Mufflers) Design
Design of Reactive and Dissipative Exhaust Silencers
17 - 18 Mar 2025, Online (Zoom)
15 - 16 Sep 2025, Online (Zoom) About this Course: |
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This two (2) days training program uses the knowledge of industrial noise control and acoustics to put the rules to design reactive and absorptive (dissipative) exhaust mufflers. Reactive mufflers use reflections of sound energy at the discontinuities in the exhaust mufflers to attenuate the exhaust sound, while absorptive mufflers use an absorptive material that absorb sound. In diesel engine exhaust system sound is normally higher at lower frequency than at the higher frequencies. The design of the exhaust mufflers must consider these facts.
This training concentrate on the methodology of design and how to optimize them by using combined reactive and absorptive type together supported with exercises
This training concentrate on the methodology of design and how to optimize them by using combined reactive and absorptive type together supported with exercises
Learning Objectives:
- To qualify the designers and manufacturers to design and manufacture exhaust silencers
- Understand the diesel engines exhaust sound characteristics
- Understand expansion chambers and sound wave reflections
- Understand the Reactive Mufflers Design and Insertion Loss
- Understand the Dissipative Mufflers Design and Insertion Loss
- Understand the Combined Reactive/Dissipative Mufflers Design and Insertion Loss
- Using NEC Developed ExSound Muffler Design Tool
- Understand the pressure drop calculation of Reactive and Dissipative Mufflers
- Understand the Testing & Certification of Exhaust Mufflers in accordance to international standards.
Course Contents:
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Day-1
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Day-2
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Free License of NEC ExTuner (R) Design Tool is provided to all participants in the course
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