FIELD: engines and pumps.
SUBSTANCE: four-stroke internal combustion engine (ICE) comprises a cylinder, a piston, valve valves and inlet and outlet channels. According to the invention, a square metal plate is arranged in the cylinder lower part on the outer side, which serves as a base for placing an additional valve body, which one surface is processed along the radius equal to the outer radius of cylinder liner and is soldered to the outer surface of the cylinder liner; and through port is cut in the cylinder liner and a plate. The body is attached to the plate, and the valve and the spring are arranged inside the body. The body inner space simultaneously serves as an outlet channel; when the engine is in non-operating state the spring closes the valve, and opens the valve to counteract the spring by means of the cylinder excess pressure.
EFFECT: improved cylinder cleaning from combustion products.
3 dwg
