Invention Grant
US06743352B2 Method and apparatus for correcting a gas sensor response for moisture in exhaust gas
有权
用于校正废气中的湿气的气体传感器响应的方法和装置
- Patent Title: Method and apparatus for correcting a gas sensor response for moisture in exhaust gas
- Patent Title (中): 用于校正废气中的湿气的气体传感器响应的方法和装置
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Application No.: US10066684Application Date: 2002-02-06
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Publication No.: US06743352B2Publication Date: 2004-06-01
- Inventor: Masashi Ando , Noboru Ishida , Satoshi Sugaya , Takafumi Oshima , Norihiko Nadanami , Takaki Otsuka , Yoshikuni Sato , Tatsuo Okumura , Yasuhisa Kuzuya
- Applicant: Masashi Ando , Noboru Ishida , Satoshi Sugaya , Takafumi Oshima , Norihiko Nadanami , Takaki Otsuka , Yoshikuni Sato , Tatsuo Okumura , Yasuhisa Kuzuya
- Priority: JP9-87361 19970321; JP9-130354 19970502; JP9-224225 19970806; JP9-264972 19970911
- Main IPC: G01N27407
- IPC: G01N27407
Abstract:
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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