Functions of Exhaust Resonator

Functions of Exhaust Resonator The Resonator is designed to work best in the frequency range where the engine makes the most noise even though if the frequency is not exactly what the resonator was tuned for, it will still produce some destructive interference.

The sound coming from the engine is a mixture of many different frequencies of sound, and since many of those frequencies depend on the engine speed. In luxury cars where quiet operation is a key feature, have another component in the exhaust that looks like a muffler, but is called a Resonator. This device works just like the Resonator chamber in the muffler, the dimensions are calculated so that the waves reflected help to cancel out frequencies of sound from the exhaust system.

In the Exhaust Resonator length of this chamber is calculated so that this wave leaves the Resonator chamber just after the next wave reflects off the outside of the chamber, the highpressure part of the wave that came from the chamber will line up with the low-pressure part of the wave that was reflected off the outside of the chamber wall, and the two waves will eventually cancel each other out.

The body of the muffler is constructed in three layers: Two thin layers of metal with a thicker, slightly insulated layer between them which allows the body of the muffler to absorb some of the pressure pulses. The inlet and outlet pipes going into the main chamber are perforated with holes similar, this allows thousands of tiny pressure pulses to bounce around in the main chamber, cancelling each other out to some extent in addition to being absorbed by the muffler’s housing.

The major cause of exhaust system deterioration is corrosion.

For each gallon of gasoline burned, about a gallon of acid- bearing water is created by the engine. If your driving consists mostly of short trips, the exhaust system will not have a chance to heat up much, and those corrosive liquids will condense inside the muffler and pipes. There, they will eat away at the metal. Mufflers can get corroded because of their complex innerstructures. Most contain drain holes to let condensed acidic water out. Top- quality mufflers are designed to resist combat acidic corrosion, using specially coated metals.

Other signs of the need for exhaust system service are rattles from underneath the car. Nine times out often, under-car rattles are caused by loose joints or broken hangers that let a tailpipe or muffler bang against some other part of the car. Broken hangers put a great strain on the flanking hangers, often breaking them too. Eventually, the whole exhaust system may drop off.

Exhaust service is needed when the system develops hisses, throbs, and other unusual noises that denote leaks. The mileage you can expect from an exhaust system varies widely depending on use. Dual exhausts rust out in faster pace because they warm up slower.

Any change you try to modify in the breathing system of your engine can create problems elsewhere in the system. There have been complaints of premature valve burning to higher fuel usage. If you change one thing, you may have to reset or tune the rest of the engine. Many problems can occur when you change the factory’s back pressure and exhaust gas velocity.

However you need to be aware of various symptoms of a bad Exhaust Resonator, to diagnose the problem accurately. Troubleshooting of Exhaust Resonator system is usually beyond the abilities of a do-it-yourself because it often requires specialized training and tools & could mess up your hands. In case, you are not confident about pulling off this procedure, take the help from a Car mechanic.

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