What Are the Reasons for Increased Engine Noise?

[JessicaLee]

There are several reasons for increased engine noise: 1. Insufficient engine oil or cold engine oil that hasn't warmed up, leading to inadequate oil pressure; 2. Excessive impurities or dirt in the engine oil, preventing effective regulation of oil pressure; 3. Mechanical interference in the engine or blockage in the lubrication oil passage. An engine is a machine that converts one form of energy into another, typically transforming chemical energy into mechanical energy. Its function is to convert the thermal energy of gasoline into mechanical energy by burning it in a sealed cylinder, where expanding gases push the piston to perform work, thereby providing power to the vehicle. Solutions to reduce increased engine noise include: 1. Installing high-quality sound-absorbing foam materials on the engine cover to suppress vibrations caused by the hood; 2. Inspecting and possibly replacing the intake and exhaust pipes; 3. Using heat-insulating pistons to increase the temperature of the combustion chamber walls, shorten the ignition delay period, and reduce combustion noise in direct-injection diesel engines with space-atomized combustion systems.