LOW PRESSURE GAS VAPORIZER AND METHOD OF OPERATION

摘要

A fuel vaporizer and method of fuel vaporization are discribed for use with a fuel such as propane, that is know to tend to liquefy at low temperatures and to vapor ize at high temperatures. The vaporizer and method described pertain to a series of inte rnal walls and cavities which promote heat-exchange and transfers heat from a flu id engine coolant to the fuel. The transfer of heat and vaporization of fluid o ccurs by virtue of movement of the fuel through a series of countercurrent passages c reated by the walls and cavities, with increasing cross-sectional dimensions in the passages to accomodate the expansion of fuel from the liquid to the gaseous state. Th e heat is transferred by conduction across a metallic interface which forms part of th e vaporizer and which separates the fuel from the coolant.