Abstract: Energy engine number two is made to convert the motion of devices that operate with a push pull motion such as hydraulic cylinders into a rotary motion. The engine is composed of units, to increase the power more units are added, one behind the other. First I have a frame to which four double action hydraulic cylinders are mounted. On the end of each piston of the hydraulic cylinders is mounted a bar with one way chain connectors on each end. Two chains are used, one on each side of the cylinders the chains are kept in position by guide sprockets. The chains are connected to the power shaft assembly. When the cylinders are activated the pistons move out from the cylinders and connect the chains on the right of the cylinders. When the pistons are fully extended they activate electric switches that reverse the direction of there movement. When the pistons are fully retracted they again activate electric switchs and reverse there direction.