To transport the waste materials from th e car's engine to the tailpipe is the main function of the Chevy Exhaust System. The tailpipe is found on the rear portion of the system in which exhaust materials are brought out in the atmosphere. For older models, exhaust has catalytic converter, one or two exhaust manifold and mufflers. Manifolds are mounted on the cylinder head of the engine which serves as the path of the gas from the exhaust ports on the cylinder head to the catalytic converter. A car's muffler is a component of the exhaust system that reduces the sound produced as the car's exhaust is vented into the atmosphere. Highly efficient mufflers provide easy passage of exhaust gases although it may produce louder sounds.
Straight through muffler and reverse-flow muffler are just two of the varied muffler types. Reverse-flow mufflers are oval in shape with multiple pipes and chambers. Muffling of the exhaust sound needs four chambers and one double jacket. Exhaust gas produced is carried to the third chamber, directed back to the first chamber and thrown out into the tailpipe. Straight through mufflers are made up of a central tube with several openings that directs the gas into the outside chamber lined-up with insulating materials to trap the noise.
Latest car models use high-performance exhaust system with one or two mufflers and tailpipes called cat-back exhaust or dual exhaust system. Improved breathing capacity is improved using this type which also leads to greater horsepower production. Added piping, mufflers and tailpipes are used which makes it easier for the exhaust to flow freely, decreases backpressure and enhances the vehicle's driving mechanism. Due to improved breathing capacity, less exhaust gases is left on the engine after every exhaust stroke. Thus there is better space for extra air and fuel mixture to power the system.
The car's exhaust system burns petrol or diesel to keep the vehicle running; however, it can produce dangerous gases that can harm the environment. Unburned hydrocarbons and carbon monoxide are the common end result pollutants of older petrol fuelled vehicles. Latest studies identified certain microscopic particles produced during combustion process that can cause big negative effects on health. Ozone is also one of the most harmful pollutants that results from the reaction of sunlight and other polluted chemicals. Exhaust pollutants only become harmful when it exceeded the standard level. The most common air pollutants are Nitrogen Oxides, Carbon Monoxide, Sulphur Dioxide, and Ozone.