| 摘要 |
PROBLEM TO BE SOLVED: To easily install a duct which connects a urea water tank, a urea water pump, and an NOx cleaning device together, and to keep urea water at a proper temperature.SOLUTION: A fuel tank 12 is arranged, side by side in a right/left direction, outside a hydraulic oil tank 11 arranged in front of an oil pressure pump 10, and a urea water tank 13 which reserves urea water is provided above the fuel tank 12. The fuel tank 12 is provided with a urea water pump 17 which projects to above the oil pressure pump 10 and supplies the urea water in the urea water tank 13 to a urea water injection valve 25, and a post-treatment unit 19 is provided above an engine 8 adjacently to the urea water pump 17, and also provided with a urea selective reducing catalyst 28 which removes nitrogen oxide in an exhaust gas and the urea water injection valve 25. Then the urea water tank 13, urea water pump 17, and urea water injection valve 25 are connected together using a urea water duct 30. |
