Engine noise and exhaust noise come from different parts of a vehicle and have distinct characteristics:
Engine Noise:
Source: Comes from the internal components of the engine such as pistons, valves, and the crankshaft.
Characteristics: Often described as a rhythmic or mechanical sound, which can vary based on engine speed (RPM), load, and type of engine (e.g., V6, inline-four). It includes noises like knocking, ticking, or rumbling.
Control: Can be affected by engine condition, maintenance, and design. Proper tuning and maintenance can reduce unwanted noise.
Exhaust Noise:
Source: Produced by the exhaust gases exiting through the exhaust system, including components like the muffler, resonator, and exhaust pipes.
Characteristics: Typically a more consistent sound compared to engine noise, characterized by a growling, rumbling, or booming noise. It’s influenced by the design and condition of the exhaust system.
Control: Can be managed by changing the exhaust system components, such as adding or modifying mufflers and resonators.
In summary, engine noise comes from the engine's internal processes, while exhaust noise is related to the exhaust system's handling of exhaust gases.