| 摘要 |
PURPOSE:To stabilize the rotation of an engine, by relating the degree of opening of a throttle valve to the revolution speed of the engine and changing the ignition time. CONSTITUTION:In acceleration, a throttle valve opening degree switch 18 is turned off. Below a set rotational frequency, ignition is caused by a delayed pulse 15. When an engine exceeds the set rotational frequency, an advanced pulse Pa becomes higher than a gate voltage so that ignition is caused by the advanced pulse Pa. When the degree of opening of a throttle valve is lower than a set level in deceleration, the throttle valve opening degree switch 18 is turned on. For that reason, triggering is caused by the delayed pulse 15 even if the rotational frequency of the engine is higher than the set level. According to this constitution, the rotation of the engine is stabilized not only in trawling but also in slow navigation. Quiet and comfortable navigation is thus enabled. |
