F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
F02D 41/40 (2006.01) F02B 23/06 (2006.01) F02F 1/38 (2006.01) F02M 45/02 (2006.01) F02B 3/06 (2006.01) F02D 41/38 (2006.01) F02F 1/24 (2006.01)
Patent
CA 2318941
The invention relates to a method for producing NO x reductants by injecting hydrocarbon into a diesel engine's combustion chamber during the expansion cycle. The secondary injected hydrocarbon is formed, under appropriate conditions, into oxygenates and olefins that are suitable for reducing NO2 species in the presence of conventional exhaust catalysts. The appropriate injection timing is obtained by referring to a calibration obtained by direct engine measurements.
L'invention porte sur de consistant à injecter des hydrocarbures dans la chambre de combustion d'un moteur diesel au cours de la détente. L'hydrocarbure injecté en second se transforme dans des conditions appropriées en composés oxygénés et en oléfines réduisant les constituants de NOx en présence des catalyseurs usuels d'échappement. L'avance à l'injection idoine est fournie par référence à un étalonnage fourni par des mesures directes sur le moteur.
Dean Anthony Marion
Hershkowitz Frank
Pink Harry Stuard
Weissman Walter
Borden Ladner Gervais Llp
Exxonmobil Research And Engineering Company
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