Control system for marine engine

摘要

A marine engine has an air intake device that includes an air regulator (e.g., a throttle valve) and fuel injectors. A control system controls an actuator of the air regulator. A first sensor detects an intake pressure in the intake device. A second sensor detects a state of the actuator. A third sensor detects an engine speed of the engine. A control device controls an amount of fuel sprayed by the fuel injectors relative to an amount of the intake air. The control device controls the amount of the fuel based upon a signal of the third sensor and a signal of the first sensor in a first actuation range of the actuator in which the intake pressure is variable. The control device controls the amount of the fuel based upon a signal of the third sensor and a signal of the second sensor in a second actuation range of the actuator in which the intake pressure is invariable.