IGNITION CONTROL DEVICE FOR SHIP PROPELLER

摘要

PURPOSE: To perform control of a misfire so that water is prevented from reverse flow from the exhaust side and to perform proper control of ignition according to the state of an engine for a ship propeller. CONSTITUTION: An ignition control device for a ship propeller is provided with a four-cycle engine and a plurality of cylinders 21 24 are vertically arranged at the four-cycle engine. Exhaust gas from a plurality of the cylinders 2-24 is collected in an exhaust gas collection passage. An ignition control device for a ship propeller comprises an ignition device 40 to ignite an engine 14 when the exhaust gas in the exhaust gas collecting passage is exhausted in water through an exhaust passage formed in a propulsion casing arranged below the four-cycle engine; an abnormality detecting means 41 to detect abnormality of the engine 14; and an ignition control means 42 to control the ignition device 40 based on detection of the abnormality and increase the number of misfire times of at least a topmost stage cylinder of a plurality of cylinders for a given time to a value more than that of at least one cylinder of other cylinders.