REFORMING SYSTEM AND ENGINE SYSTEM

A reforming system includes a vaporizer configured to vaporize liquid fuel to produce fuel gas; a reformer configured to reform the fuel gas produced by the vaporizer to produce a reformed gas containing hydrogen; an air supplier configured to supply air to the reformer; a fuel gas supplier configured to supply the fuel gas to the reformer; a heater configured to increase a temperature of the reformer; a reformed gas flow passage through which the reformed gas produced by the reformer flows; a cooler disposed in the reformed gas flow passage and configured to cool the reformed gas; a circulation passage connecting the vaporizer with the cooler and through which refrigerant flows through the vaporizer and the cooler; and a circulation pump disposed in the circulation passage and configured to circulate the refrigerant through the circulation passage.