What are the manifestations of excessive engine wear?
2 Answers
The manifestations of engine wear include insufficient power and increased fuel consumption. Introduction to engines: An engine is a machine capable of converting other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc. For example, internal combustion engines typically convert chemical energy into mechanical energy. The term engine can refer to either the power-generating device or the entire machine including the power device (e.g., gasoline engines, aircraft engines). The engine was first developed in the UK, so the concept of the engine also originates from English, with its original meaning referring to "a mechanical device that generates power." Classification of engines: Engines are divided into external combustion engines, internal combustion engines, gas turbines, and jet engines.
I used to drive an old car that experienced engine wear issues. When starting, there was a harsh ticking sound, and during acceleration, there was a heavy knocking sensation with noticeably insufficient power—even climbing a slope was a struggle. Fuel consumption soared to nearly double. Checking the engine oil always revealed a dark, murky color with poor viscosity and tiny metal particles mixed in, and the oil level dropped extremely fast. Blue smoke from the exhaust was particularly noticeable, especially during cold starts, indicating that oil was being burned. The engine temperature also tended to rise easily, with the needle fluctuating up and down, making the engine feel hot as if it were about to overload. At idle, the car shook violently, and the steering wheel vibrated noticeably. All these signs were warnings of excessive wear—getting it repaired early could save trouble, but delaying would lead to much higher repair costs.
