| 摘要 |
PROBLEM TO BE SOLVED: To perform pulverization and effective adoption of catalyst when urea water is injected.SOLUTION: A tractor having a Diesel engine and a urea selective catalyst reduction system installed therein has a feature that there are provided a urea water tank storing urea water and a pressure tank for storing a part of exhaust gas. When urea water in the urea water tank is injected from the urea selective catalyst reduction urea injection nozzle, the exhaust gas in the pressure tank is merged with the urea water at the upstream side of the urea injection nozzle. In addition, the Diesel engine is provided with a supercharger and an exhaust pressure taking-out pipe is fixed between the supercharger and the exhaust manifold, and the exhaust pressure taking-out pipe and the pressure tank are connected.SELECTED DRAWING: Figure 9 |
