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Air Quality/Vehicle silencer

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Expert: - 5/2/2005


Question
How does a vehicle silencer work?

Answer
If by the term silencer you mean an exhaust muffler, it is a chamber and pipe system for creating back pressure on the exhaust side of the engine.  By creating the back pressure, the explosions from the pistons's exhaust is evened out and reducing the overall noise level.  The greater the exhaust backpressure the lower the overall exhaust noise.  But sound reduction comes with a reduction in engine efficiency.

Air Quality

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Volunteer

Dave Russell

Expertise

I can answer questions on industrial practice, emissions, and impacts of air pollutants. I`m also good on regulatory and policy questions, but have an admitted anti-regulatory bias.

Experience

I've been in consulting engineering for over 30 years.

Organizations
Am. Inst. of Chemical Engineers., Water Environment Federation

Publications
Too many to list here. I'm currently writing an editorial piece for PollutionOnLine.com once monthly on industrial perspectives on pollution control.

Education/Credentials
BS & MS in Environmental Engineering, Instructor for Am. Inst. of Chemical Engineers

Awards and Honors
Who's Who in Engineering

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