Abnormality determination device for air-fuel ratio sensor

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United States of America Patent

PATENT NO 8794056
APP PUB NO 20120192634A1
SERIAL NO

13312998

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Abstract

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An abnormality determination device for an air-fuel ratio sensor includes a differential value calculator and an abnormality determiner. The differential value calculator is configured to calculate a differential value of an output value of the air-fuel ratio sensor which is configured to detect an air-fuel ratio of exhaust gas. The abnormality determiner is configured to determine abnormality of the air-fuel ratio sensor based on a result of comparison between a reference output value of the air-fuel ratio sensor and a predetermined threshold. The reference output value is obtained by the air-fuel ratio sensor when the differential value calculated by the differential value calculator becomes a predetermined value.

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Patent Owner(s)

  • HONDA MOTOR CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ando, Hiroyuki Wako, JP 106 1008
Aoki, Takeshi Wako, JP 256 2614
Miyauchi, Atsuhiro Wako, JP 18 133
Tani, Michinori Wako, JP 15 27

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