Engine system for vessel propulsion device and vessel including the same

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United States of America Patent

PATENT NO 9745945
SERIAL NO

14452631

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Abstract

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An engine system for a vessel propulsion device includes an engine including an intake amount adjusting unit and an ignition plug, and configured to generate a drive force for the vessel propulsion device. The engine system includes an ignition timing control unit, a knocking detecting unit, a knocking retard control unit that retards the ignition timing of the ignition plug by a unit retard amount when the knocking detecting unit detects knocking, an abnormality judging unit that, when a state where the knocking detecting unit detects knocking at intervals within a predetermined time continues, judges that an abnormality has occurred based on a continued state of knocking detection, and an intake amount limiting unit that limits the intake amount of the engine based on judgment of an abnormality made by the abnormality judging unit.

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Patent Owner(s)

Patent OwnerAddress
YAMAHA HATSUDOKI KABUSHIKI KAISHA2500 SHINGAI IWATA-SHI SHIZUOKA-KEN 438-8501

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kinoshita, Yoshimasa Shizuoka, JP 46 407

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