Exhaust gas purification apparatus for an internal combustion engine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10190457
APP PUB NO 20180023437A1
SERIAL NO

15650284

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Abstract

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A lean control, in which a target air fuel ratio is made to vary to a lean air fuel ratio and a rich air fuel ratio across a lean air fuel ratio, and a rich control, in which the target air fuel ratio is made to vary to a lean air fuel ratio and a rich air fuel ratio across a rich air fuel ratio, are alternately carried out, wherein when carrying out the lean control, a period per one time in which the target air fuel ratio becomes the lean air fuel ratio is made longer than a period per one time in which the target air fuel ratio becomes the rich air fuel ratio, and a deviation of the lean air fuel ratio from the lean air fuel ratio is made smaller than a deviation of the rich air fuel ratio from the lean air fuel ratio.

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Patent Owner(s)

  • TOYOTA JIDOSHA KABUSHIKI KAISHA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kawai, Takashi Susono, JP 180 1682
Miyoshi, Yuji Susono, JP 70 223
Suzuki, Kazuya Susono, JP 180 1627

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