The new embodiment of a highly efficient internal combustion hydraulic engine with a vane torquing device herein being provided, is designed to: a).—Maximize to the maximum extent possible the power and pressure produced by each combustion and convert it into mechanical use, and b).—To fit the engine snugly into all size trucks, pick-ups, heavy equipment, large and mid-size vehicles, snowmobiles, boats, buses, by placing the torquing device just below the cylinders. This new embodiment uses three electromagnetic actuators and one mechanical cam actuator to operate. It also has the following two additional features: first, an internal check valve located inside the block, which will make the engine more versatile, adaptable and supple to various road conditions. And second, a flexible longitudinal metal pin between the cam and the blind-type check-out-valve, to make the functioning of the engine more smooth and durable.