IMPROVEMENTS IN FUEL BURNERS TO PREHEAT THE INLET AIR OF INTERNAL COMBUSTION ENGINES

摘要

A fuel burner for producing a highly stable flame and predictable heat output for use within an environment subject to disruptive pressure changes and ambient air current flow such as the intake manifold of an internal combustion engine. The burner includes a nozzle 42 for forming a cone shaped fuel spray 48 and a flame surrounding shroud 30 having a combustion gas outlet 33 wherein the shroud is shaped to cause a toroidal pattern 60 of recirculating combustion gases to be formed within the shroud. A circumferential lip 35 surrounding the combustion gas outlet creates a low pressure zone 63 within the shroud to cause a counterflow 64 of ambient air into the shroud through the outlet in a cylindrical pattern coaxial with the exiting combustion gases. IMAGE