Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yoshikuni Kurashima0
Shin Yamauchi0
Toshio Hori0
Yoichi Iihoshi0
Date of Patent
July 13, 2010
0Patent Application Number
117676540
Date Filed
June 25, 2007
0Patent Citations Received
Patent Primary Examiner
Patent abstract
In a diagnosis apparatus for an internal combustion engine which determines the abnormality of a linear A/F sensor which is disposed on the upstream side of a catalyst of the engine and detects the A/F of exhaust gas, the apparatus includes a response/gain deterioration detection unit that separately detects the response deterioration in which the response of the linear A/F sensor is delayed and the gain deterioration in which the detection sensitivity of the linear A/F sensor is abnormal.
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