apparatus for vaporizing liquids to be burned in an internal combustion engine or furnace for the purpose of increasing fuel efficiency , improving cold weather starting and reducing pollution . the device may also be used in non combustion processes such as heating coating or disbursing . a three dimensionally porous electric heating element constructed of a ptc ceramic is utilized in combination with a liquid injection apparatus for the purpose of vaporizing liquid injected into it . the ptc ceramic is resistantly heated by electrical power leads a temperature at which the injected liquid vaporizes and diffuses through its pores . the porous ptc ceramic is designed to auto - stabilize its temperature at a point for the optimum vaporization of the desired liquid .