uniflow engine

A uniflow engine is a type of steam engine where steam enters through admission valves at the cylinder ends and exits through exhaust ports uncovered by the piston near the end of its stroke. This design aims for efficiency by allowing steam to flow in one direction.1

A steam engine is a machine that uses steam power to perform mechanical work by converting heat energy into motion. Typically, steam from a boiler expands under pressure, pushing a piston in a cylinder to create rotary motion. Early steam engines were developed for pumping water and later adapted for transportation, such as locomotives and steamboats. While largely replaced by internal combustion engines for vehicles, steam engines remain crucial for generating large amounts of electric power, particularly through steam turbines.2