What Causes Excessive Engine Noise?

[MiguelFitz]

Excessive engine noise can be attributed to the following reasons: 1. Excessive carbon buildup in the engine; 2. Use of inappropriate or dirty engine oil; 3. Coolant temperature being too low; 4. Engine knocking or detonation. An engine is a machine capable of converting other forms of energy into mechanical energy, including internal combustion engines, external combustion engines, jet engines, and electric motors. The engine serves as the power-providing device for a vehicle, acting as its heart. Its function is to convert the thermal energy of gasoline (or diesel) into mechanical energy by burning the fuel in a sealed cylinder, causing the gas to expand and push the piston to perform work. Depending on the power source, automotive engines can be categorized into diesel engines, gasoline engines, electric vehicle motors, and hybrid engines, among others.