Abstract: A cylinder linkage method for a multi-cylinder internal-combustion engine comprising connecting piston rods (27) and pistons (28) of four or more linkage combustion and compression reversible cylinder blocks (14A, 14B, 14C, 14D, 30A, 30B, 30C, 30D) and of reversible precompression cylinder blocks (3, 8) simultaneously by one linkage rod (26), such that the linkage rod (26) is able to drive the linkage pistons (28) to move in the same direction simultaneously and to arrive at a top dead center or a bottom dead center or any same stroke position between the two dead centers of all the linkage cylinder blocks simultaneously. The cylinder linkage method for a multi-cylinder internal-combustion engine can be used to manufacture a multi-cylinder linkage compound internal-combustion engine, and further used to manufacture internal-combustion engines such as gasoline internal-combustion engine, diesel internal-combustion engine, natural gas internal-combustion engine etc.

Abstract: A cylinder linkage method for a multi-cylinder internal-combustion engine comprising connecting piston rods (27) and pistons (28) of four or more linkage combustion and compression reversible cylinder blocks (14A, 14B, 14C, 14D, 30A, 30B, 30C, 30D) and of reversible precompression cylinder blocks (3, 8) simultaneously by one linkage rod (26), such that the linkage rod (26) is able to drive the linkage pistons (28) to move in the same direction simultaneously and to arrive at a top dead center or a bottom dead center or any same stroke position between the two dead centers of all the linkage cylinder blocks simultaneously. The cylinder linkage method for a multi-cylinder internal-combustion engine can be used to manufacture a multi-cylinder linkage compound internal-combustion engine, and further used to manufacture internal-combustion engines such as gasoline internal-combustion engine, diesel internal-combustion engine, natural gas internal-combustion engine etc.