UREA SOLUTION INJECTION DEVICE
- 专利权人:
- YANMAR CO., LTD.;JAPAN SHIPS MACHINERY & EQUIPMENT ASSOCIATION
- 发明人:
- INOUE TSUYOSHI
- 申请号：
- EP20130806650
- 公开号：
- EP2878779(A1)
- 申请日:
- 2013.06.12
- 申请国别(地区):
- 欧洲专利局
- 年份:
- 2015
- 代理人:
- 摘要：
The purpose of the present invention is to provide an exhaust purification device (1) that is capable of adding an appropriate amount of urea solution without the need to directly measure the NOx emissions amount using an NOx measuring means. The exhaust purification device (1) uses urea solution as a reducing agent for reducing nitrogen oxides within exhaust, and is provided with a temperature sensor (12), a humidity sensor (13), and a control device (14). A map (M) is stored in the control device (14), and in said map (M) the real NOx emissions amount (Nr) for each rotation speed and each load of an engine (20) occurring at a predetermined air temperature and a predetermined absolute humidity are converted using a correction formula (F) into a reference NOx emissions amount (Ns) for each rotation speed and each load of the engine (20) while in a standard state. Using the map (M), the control device (14) calculates a reference NOx emissions amount (Ns) that corresponds to the rotation speed (R) detected b
- 来源网站：
- 中国工程科技知识中心
