ENGINE SYSTEM FOR VESSEL PROPULSION DEVICE AND VESSEL INCLUDING THE SAME

摘要

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.

主权项

1. An engine system for a vessel propulsion device, the engine comprising:
an engine including an intake amount adjusting unit configured to adjust an intake amount to be sucked into a cylinder and an ignition plug configured to ignite a gas mixture inside the cylinder, the engine being configured to generate a drive force for the vessel propulsion device to generate thrust of a vessel; an ignition timing control unit configured and programmed to control an ignition timing of the ignition plug; a knocking detecting unit configured to detect knocking in the engine; a knocking retard control unit configured and programmed to cause the ignition timing control unit to retard the ignition timing of the ignition plug by a unit retard amount when the knocking detecting unit detects knocking; an abnormality judging unit configured and programmed to, when a state in which the knocking detecting unit detects knocking at intervals within a predetermined time continues, judge that an abnormality has occurred based on a continued state of knocking detection; and an intake amount limiting unit configured and programmed to limit the intake amount of the engine by controlling the intake amount adjusting unit based on a judgment of an abnormality made by the abnormality judging unit.