An exhaust system directs gases produced by the engine toward the rear of the vehicle.
The back portion of something, including a building or vehicle, is called the rear. [...] The back portion of something, including a building or vehicle, is called the rear.
In an engine or stove, an exhaust system is used to direct reaction exhaust gases away from a controlled combustion. The complete system, which may comprise one or more exhaust pipes, transports burned gases from the engine.
Your exhaust has four major purposes: to reduce noise, to keep exhaust fumes away from passengers, to enhance engine performance, and to reduce fuel consumption. Your vehicle's exhaust system may be configured differently depending on the brand, model, and number of engine valves it has.
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