发明名称 |
Methods and apparatus for measuring NOx gas concentration, for detecting exhaust gas concentration and for calibrating and controlling gas sensor |
摘要 |
A method for detecting the concentration of a specific gas (NOx) in an engine exhaust gas using a gas sensor and a process of correcting the gas sensor. According to the correcting process, the amount of moisture in the exhaust gas is estimated, then a a gas concentration detection signal output by the gas sensor on the basis of an estimated amount of moisture is corrected. Finally, the effect of the amount of moisture in the exhaust gas is removed or reduced from the detected value of gas concentration.
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申请公布号 |
US2002130053(A1) |
申请公布日期 |
2002.09.19 |
申请号 |
US20020066684 |
申请日期 |
2002.02.06 |
申请人 |
NGK SPARK PLUG CO., LTD. |
发明人 |
ANDO MASASHI;ISHIDA NOBORU;SUGAYA SATOSHI;OSHIMA TAKAFUMI;NADANAMI NORIHIKO;OTSUKA TAKAKI;SATO YOSHIKUNI;OKUMURA TATSUO;KUZUYA YASUHISA |
分类号 |
F01N3/08;F01N3/20;F01N11/00;F02D41/14;F02D41/24;G01N27/417;G01N27/419;G01N33/00;(IPC1-7):G01N27/407 |
主分类号 |
F01N3/08 |
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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