发明名称 |
Automobile oil deterioration diagnosing apparatus |
摘要 |
An oil deterioration diagnosing method and an apparatus for carrying out the same uses an optical sensor capable of determining a degree of deterioration of oil on the basis of transmission losses of near-infrared rays of two different wavelengths and the transmission loss difference between the transmission losses. The degree of deterioration of the oil can be determined without being affected by variable measuring temperature and the original color of the oil. |
申请公布号 |
US2003060984(A1) |
申请公布日期 |
2003.03.27 |
申请号 |
US20020271718 |
申请日期 |
2002.10.17 |
申请人 |
HITACHI, LTD. |
发明人 |
TAKEZAWA YOSHITAKA;ITO YUZO;KATAGIRI JUNICHI |
分类号 |
G01N21/31;G01N21/35;G01N33/28;(IPC1-7):G06F19/00;G01N31/00 |
主分类号 |
G01N21/31 |
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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