| 摘要 |
<P>PROBLEM TO BE SOLVED: To cool urea water sent into a urea water supply valve. <P>SOLUTION: This exhaust emission control device has the urea water supply valve 10 arranged in an exhaust pipe 7 for supplying NOx reducing urea water, and a urea water tank 12 storing the urea water to be supplied from the urea water supply valve 10. The urea water is supplied to the urea water supply valve 10 from the urea water tank 12 via a urea water supply pipe 11, and a cooling system 13 for cooling the urea water is arranged in this urea water supply pipe 11. <P>COPYRIGHT: (C)2009,JPO&INPIT |
