What Does Compression Ignition Engine Mean?

[MacGideon]

Compression ignition engine refers to an engine that does not rely on spark plugs to ignite the combustible mixture in the cylinder. This type of engine ignites the combustible mixture through the high temperature and pressure generated at the end of the compression stroke. All diesel engines are compression ignition engines, which feature high compression ratios, stronger power, and higher efficiency. The cylinder is where the mixture of fuel and air combusts and where the thermal energy released from the combustion is converted into mechanical energy. The cylinder is cylindrical in shape with a very smooth inner surface, almost mirror-like. When the mixture in the cylinder combusts and expands, it generates high pressure that acts on the top of the piston, pushing it downward. Through the crankshaft connecting rod mechanism, the crankshaft is rotated, driving the propeller to spin and generating thrust to propel the aircraft forward. When the engine is running, the piston moves back and forth at high speed within the cylinder.