Electric power generating system

An electric power generating system adapted for use in a vehicle including at least one electric generator and one battery, comprising at least one energy converter for receiving superfluous movement of the vehicle and producing pressure fluid flow from such movement, and power transmitting means for receiving and changing the fluid flow into rotational power, and transmitting rotational power to the electric generator when stored rotational power reaches a predetermined level, said power transmitting means comprising two power cylinders, each power cylinder having a power piston therein and a power piston rod extending outwardly from the power cylinder, said power piston being actuated by the pressure fluid flow transferred from the energy converter, coupling means engaged with said power piston rod of the power cylinder for changing reciprocal movement of the power piston into rotational movement, a speed converter disposed between said coupling means and said electric generator, and a two way valve for selectively transmitting said pressure fluid flow into one of said two power cylinders to alternately operate said power cylinders for continuously rotating said speed converter, whereby the generator is operated by superfluous movement of the vehicle to generate electricity.