Nitrogen oxides are removed from an exhaust gas containing nitrogen oxides and oxygen in an amount larger than its stoichiometric amount relative to unburned components in the exhaust gas, by (i) disposing an exhaust gas cleaner in a flow path of the exhaust gas, the exhaust gas cleaner comprising...http://www.google.es/patents/US5772973?utm_source=gb-gplus-sharePatente US5772973 - Exhaust gas cleaner and method for removing nitrogen oxides
Exhaust gas cleaner and method for removing nitrogen oxides
