Two-stroke engine has first and second channels that lead into wall of cylinder, and that are connected to each other via pocket in piston when piston is in certain position

摘要

The engine has a first channel (10) for sucking in fuel-air mixture, second channel (30) linked to the first channel, third channel linked to the second channel, and fourth channel (50) for sucking clean air into a crank case. The first and second channels lead into the wall of a cylinder (1), and are connected to each other via a pocket (25) in a piston (4) when the piston is in a certain position. The movable piston is arranged in the cylinder. The crank case is attached to the cylinder. A crankshaft (7) is operated by the piston in the crank case. The first channel sucks fuel-air mixture using the high pressure generated in the crank case. One end of the second channel is connected to the first channel while its other end is connected to the crank case. The third channel is linked to the second channel, such that the fuel-air mixture is pressed from the second and third channel into a combustion chamber (20) using the high pressure generated in the crank case. The fourth channel sucks clean air using the low pressure generated in the crank case.