Redox catalysis of NOx in internal combustion engines

摘要

Internal combustion engine with reduced N oxide emissions comprises: (a) a piston and cylinder assembly having walls defining an enclosed variable displacement chamber which has a max. vol. when the piston is at bottom dead centre and a min. vol. when the piston is at top dead centre; (b) a device for admitting air into the chamber; (c) a compact pot formed in a wall of the chamber and having a surface which partially defines a boundary or the chamber) (d) a device for injecting fuel into the pot when the piston is near top dead centre to cause ignition and combustion of the air and fuel mixt.; (e) whisker-like protuberances extending outwardly from the surface of the pot; and (f) an effective amt. of a catalyst applied to the surface of the pot and to the protuberances for reducing N oxides formed in the combustion gases.