Straddled vehicle engine unit and straddled vehicle

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11536215
SERIAL NO

17473908

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A straddled vehicle engine unit including an internal combustion engine and a misfire detection device. The internal combustion engine has a crankshaft, and a crank angle signal output unit that periodically outputs a crank angle signal in accordance with rotation of the crankshaft. The internal combustion engine is configured to repeat at least two kinds of strokes on a cycle of every 720-degree rotation of the crankshaft. The misfire detection device includes a crankshaft rotation speed fluctuation physical quantity acquisition unit configured to acquire a physical quantity related to an amount of fluctuation in a rotation speed of the crankshaft in one kind of stroke, out of the at least two kinds of strokes, based on the crank angle signal from the crank angle signal output unit, and a misfire determination unit configured to perform a misfire determination in response to each acquisition of the crankshaft rotation speed fluctuation physical quantity.

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Patent Owner(s)

  • YAMAHA HATSUDOKI KABUSHIKI KAISHA; DENSO CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hotta, Minoru Aichi, JP 15 212
Iwamoto, Kazuteru Shizuoka, JP 11 19
Kawashima, Nobuyuki Shizuoka, JP 15 106
Kinoshita, Hisatoshi Shizuoka, JP 18 43
Nonogaki, Yoshihiko Aichi, JP 9 20

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