Abstract: A fuel supplying system of a gas-engine is comprised of a gas-engine, an intake manifold, a mixer communicated with the gas-engine via the intake manifold, a fuel passage, a gas tank communicated with the mixer via the fuel passage, an air passage, an air cleaner communicated with the mixer via the air passage, and a governor inserted in the fuel passage. The governor is comprised of a first gas room, a second gas room, an opening between the first gas room and the second gas room, and an atmospheric pressure room defined in the second gas room by a first diaphragm. The opening between the first gas room and the second gas room is open and closed by a valve. A lever is fixed to the valve and a first spring urges the valve to close the opening. An apparatus is supplied for varying the urging force of the spring.

Abstract: A temperature controller for controlling the tube wall temperature of a heater for absorbing heat during Stirling engine operation includes an operator circuit setting a pre-set temperature based on the pressure of the high pressure working medium. Such preset temperature is transmitted to an air-fuel rate controller for controlling the temperature at the heater to keep an optimal working condition of the engine.