Why is the car engine buzzing?

[LeBeckett]

The buzzing noise from a car engine may be caused by worn or loose wheel bearings or uneven tire wear. Below is an introduction to engines: 1. Introduction: An engine is a machine that converts non-mechanical energy into mechanical energy. 2. Classification: Engines include internal combustion engines (reciprocating piston engines), external combustion engines (such as Stirling engines, steam engines, etc.), jet engines, electric motors, etc. 3. External combustion engine: An external combustion engine refers to an engine where the fuel is burned outside the engine. 4. Internal combustion engine: An internal combustion engine, also known as a reciprocating piston engine, differs from an external combustion engine in that the fuel is burned inside the engine. There are many types of internal combustion engines, with gasoline engines and diesel engines being the most common examples.