发明名称 |
Apparatus for correcting output of cylinder internal pressure sensor, and cylinder internal pressure detection apparatus including the same |
摘要 |
An output correction apparatus that corrects offset drift of a cylinder internal pressure sensor, and a cylinder internal pressure detection apparatus that accurately detects cylinder internal pressure of an internal combustion engine through use of the output correction apparatus. The cylinder internal pressure detection apparatus includes a detection circuit section which detects a change in the resistance of a piezoresistor element as an electrical signal; an amplification circuit section which amplifies and outputs the electrical signal (output value); and a correction circuit section which corrects the output value. The correction circuit section includes a reset control section which resets the output value of the amplification circuit section to a reference value, and a reset timing detection section which determines a timing of the resetting.
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申请公布号 |
US8413495(B2) |
申请公布日期 |
2013.04.09 |
申请号 |
US20080734659 |
申请日期 |
2008.07.29 |
申请人 |
HIGUCHI YUZO;TSUJIMURA YOSHINORI;NGK SPARK PLUS CO., LTD. |
发明人 |
HIGUCHI YUZO;TSUJIMURA YOSHINORI |
分类号 |
G01M15/04 |
主分类号 |
G01M15/04 |
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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