发明名称 |
APPARATUS FOR DISTINGUISHING LIQUID REDUCING AGENT |
摘要 |
<p>An apparatus for distinguishing a liquid reducing agent which judges empty with a higher precision than heretofore is provided. The apparatus for distinguishing a liquid reducing agent is provided with a concentration sensor and a liquid-level sensor in a storage tank of liquid reducing agent, and is characterized in that empty is judged by utilizing the liquid-level based on the liquid-level sensor in addition to the concentration based on the concentration sensor (step 3 and step 5). Even if a bubble is adhering to the concentration sensor and an erroneous signal indicative of empty is output although the residual quantity of liquid reducing agent is sufficient, the liquid-level sensor does not output a signal indicative of empty. Consequently, erroneous judgment is prevented and accurate judgment can be made as compared to heretofore.</p> |
申请公布号 |
EP2136045(A1) |
申请公布日期 |
2009.12.23 |
申请号 |
EP20080703873 |
申请日期 |
2008.01.25 |
申请人 |
NISSAN DIESEL MOTOR CO., LTD.;NGK SPARKPLUG CO., LTD. |
发明人 |
MATSUNAGA, HIDEKI;SATOU, YOSHIKUNI;YAMAMOTO, TAKASHI;SASANUMA, TAKEO |
分类号 |
F01N3/18;B01D53/86;B01D53/94;F01N3/08;F01N3/20;F01N11/00 |
主分类号 |
F01N3/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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