Full Title

Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture (carburettors with heating, cooling or thermal insulating means for combustion-air, fuel or fuel-air mixture F02M15/00; apparatus for de-liquefying non-liquid fuels by heating F02M21/06; apparatus having heating means for non-gaseous fuels with low melting point F02M21/10; apparatus characterised by adding hot secondary air to fuel-air mixture F02M23/14; fuel-injection apparatus characterised by having heating, cooling or thermally insulating means F02M53/00)