초록 ▼

The present invention relates to an exhaust denitration device for a diesel engine, which can sufficiently clean NOx under a wide-range of engine operating conditions. To this end, a diesel engine fuel is used as a reducing agent, and a plurality of supply means (5, 6) for supplying the reducing age

The present invention relates to an exhaust denitration device for a diesel engine, which can sufficiently clean NOx under a wide-range of engine operating conditions. To this end, a diesel engine fuel is used as a reducing agent, and a plurality of supply means (5, 6) for supplying the reducing agent fuel are provided at locations between the cylinders of the diesel engine (1) and a catalyst bed (4). In addition, in the case of the diesel engine (1) with an exhaust turbocharger, the first supply means (5) is disposed between an exhaust valve of the diesel engine (1) and an inlet of a turbine (3) of the exhaust turbocharger, and the second supply means (6) is disposed between an outlet of the turbine (3) and the catalyst bed (4).

대표청구항 ▼

[ I claim:] [1.] Apparatus comprising:a diesel engine having at least one cylinder;a catalyst bed;an exhaust pipe connecting the at least one cylinder of said diesel engine to said catalyst bed for receiving exhaust gases from said at least one cylinder and for passing the thus received exhaust gase

[ I claim:] [1.] Apparatus comprising:a diesel engine having at least one cylinder;a catalyst bed;an exhaust pipe connecting the at least one cylinder of said diesel engine to said catalyst bed for receiving exhaust gases from said at least one cylinder and for passing the thus received exhaust gases through said catalyst bed; andfirst and second reducing agent supply devices positioned at spaced apart locations along said exhaust pipe between said at least one cylinder of said diesel engine and said catalyst bed for supplying a reducing agent into the exhaust gases in said exhaust pipe,wherein said reducing agent is supplied only from one of said first and second reducing agent supply devices at any point in time,wherein said first and second reducing agent supply devices are positioned such that a temperature of the exhaust gases passing said first reducing agent supply device is substantially different from the temperature of the exhaust gases passing said second reducing agent supply device, andwhereby the catalyst bed utilizes the thus supplied reducing agent to reduce NOx contained in the exhaust gases.