A: (1) the upper and lower ends are covered with copper leather, with nylon, steel wire, etc., and the edges of the copper leather around the edges of the cylinder and water holes are strengthened, and some of them are also trimmed with nickel sheets; (2)made of metal sheet; (3) made of latex and high quality steel wire and other materials, suitable for high compression ratio of the engine, its use of five layers of thin steel superposition, Put an end to the defect of easy burning through the cylinder, and can be used to increase or decrease the cylinder cushion method to adjust compression ratio.
