From there, the catalytic converter , aptly named for its function, uses a catalyst to convert the dangerous emissions into carbon dioxide and water vapor. While the emissions emitted are still considered harmful to the environment, they are much less harmful than what the engine produces. In some cases, the exhaust system makes the fumes that are expelled much cleaner to help reduce emissions and protect the environment. The tailpipe is the last piece of the exhaust system that directs the exhaust gases out and away from the vehicle.
Mufflers are soundproofing devices that reduce the sound of the engine utilizing acoustic sound muffling. Made up of chambers or pipe, with holes in them, that is capable of producing a wave that removes certain sound frequencies. The exhaust gases, along with the sound waves, enter the center tube and bounce off the rear wall of the muffler and are reproduced through a hole within the main body of the muffler.
Lastly, they pass through a set of holes into a second chamber, where they are then released through the last pipe and out of the muffler, entirely. While reducing sound is the key assignment for this part, it is challenged with maximizing air flow simultaneously. A better flow rate equals a better performance for the vehicle. The balance between airflow and volume changes drastically when the muffler develops leaks; it is essential to repair or replace the muffler when leaks are detected.
The resonator is similar to the muffler in that it changes the vibrations from the engine within the exhaust system. This component is used to organize, and tune vibration sounds, as well as increase the effectiveness of exhaust flow which helps increase performance and improve fuel efficiency. Muffler and exhaust difference is easy to understand when you know that the muffler is actually part of the exhaust system.
The catalytic converter does the reduction and oxidation of harmful gases to convert them into harmless products like CO2, water, N2, etc.
Read also: How is power transmitted from the engine to wheels? Save my name, email, and website in this browser for the next time I comment. What is muffler? Share on:. The exhaust emissions test checks for the absence of a converter or a malfunctioning one during an inspection.
It's illegal in some states and localities to remove a factory-installed catalytic converter. A mechanic can sometimes temporarily remove it and replace the catalytic converter with a test pipe, but the rules on this can vary from place to place.
So how do you know for sure if your catalytic converter has failed? Get the answer on the next page. There really is no "inspection port" for the consumer or mechanic to see an actual clog in a converter. Often, the only way to tell if a catalytic converter is malfunctioning plugged is to remove it and check the change in engine performance.
When a clogged converter is suspected, some mechanics temporarily remove the O2 sensor from the exhaust pipe ahead of the catalytic converter and look for a change in performance. A catalytic converter relies on receiving the proper mix of exhaust gases at the proper temperature. Any additives or malfunctions that cause the mixture or the temperature of the exhaust gases to change reduce the effectiveness and life of the catalytic converter.
Leaded gasoline and the over-use of certain fuel additives can shorten the life of a catalytic converter. Also, there usually is a noticeable drop in gas mileage associated with a clogged catalytic converter. A partially clogged converter often acts like an engine governor, limiting the actual RPMs to a fast idle.
A totally clogged converter causes the engine to quit after a few minutes because of all the increased exhaust back pressure. The catalytic converter, like the rest of the emissions system, typically has a warranty length that exceeds the term of the warranty for the rest of a typical U. Here is a safety reminder: Do not park your car over tall grass or piles of dry leaves.
0コメント