| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust cleaning device of an internal combustion engine capable of sufficiently adsorbing ammonia even to an exhaust downstream side area in a cleaning catalyst.SOLUTION: A turbocharger 11 provided with an urea water supply mechanism 200 which adds urea water to an exhaust path 26, an SCR catalyst 41 which adsorbs urea water added from the urea water supply mechanism 200 and a nozzle vane 11v is disposed on an engine 1. A control device 80 increases an exhaust flow rate by changing the nozzle vane 11v to the minimum degree of opening when adding the urea water upon the velocity reduction of the engine 1. |
