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Which is the major drawback of the baffle type of muffler?

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+1 vote
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in Automotive Engine Design by (137k points)
Which is the major drawback of the baffle type of muffler?

(a) Restriction of exhaust gas

(b) Free flow of exhaust gas

(c) Wave cancellation

(d) Reduced noise

This question was addressed to me in an online interview.

The origin of the question is Exhaust System in chapter Exhaust System & Petrol Engine Fuel Supply System of Automotive Engine Design

1 Answer

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Best answer
Correct option is (a) Restriction of exhaust gas

To elaborate: The major drawback of the baffle muffler is their low efficiency. Because of the restriction provided to the flow by the baffles, the backpressure is increased thus causing a loss in engine power.

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