What is the working principle of an engine?
2 Answers
Engine working principle is the conversion of internal energy into mechanical energy, which is a machine that can convert other forms of energy into mechanical energy. The following are specific introductions about engines: 1. Types of engines: internal combustion engines, external combustion engines, steam engines, jet engines, and electric motors. 2. Device: An engine refers to a mechanical device that generates power. It is applicable to both power generation devices and can include the entire machine of the power device. Internal combustion engines, also known as reciprocating piston engines, differ most from external combustion engines in that the fuel is inside them. The most common internal combustion engines are gasoline engines and diesel engines. The engine block forms the skeleton of the engine and serves as the installation base for various mechanisms and systems. All major components and accessories of the engine are installed inside and outside the block, which must have sufficient strength.
I remember being curious about how an engine works the first time I drove a car. Essentially, it's a process that converts fuel into power. Simply put, there are four steps: first, during the intake stroke, air and gasoline mix and enter the cylinder; second, the piston compresses this mixture, making it hotter and denser; third, the spark plug ignites the mixture, causing an explosion that pushes the piston downward—this is the core part where the engine generates power; fourth, during the exhaust stroke, the piston moves upward to expel the burned gases. This cycle repeats continuously, making the car move. I've also noticed while driving that this process affects fuel consumption at different RPMs—maintaining a steady speed saves fuel. In short, understanding these principles has made me more careful about engine maintenance, like changing the oil regularly to extend its lifespan and avoiding aggressive acceleration at low speeds.
