Fuel injection control for marine engine

A method of controlling a marine engine associated with a watercraft, the method comprising sensing a first engine speed, comparing the first sensed engine speed with a first predetermined speed, reducing fuel supply to the engine by a first delivery amount if the first sensed engine speed is above the first predetermined engine speed, sensing a second engine speed after reducing fuel delivery by a first fuel amount, restoring fuel delivery by the first fuel amount if the second sensed engine speed is below a second predetermined engine speed that is greater than the first predetermined engine speed.

A method of controlling a marine engine associated with a watercraft, the method comprising sensing a first engine speed, comparing the sensed engine speed with a first predetermined speed, reducing a power output of the engine by a first degree if the first sensed engine speed is above the first predetermined engine speed, sensing a second engine speed after reducing the power output of the engine by the first degree, restoring the power output of the engine by the first degree if the second sensed engine speed is below a second predetermined engine speed that is greater than the first predetermined engine speed.

A method of controlling an engine of a planning-type watercraft that jumps out of the water, the method comprising sensing an engine speed, activating an engine speed limiting mode if the sensed engine speed is above a first predetermined speed, determining if a magnitude of a jump executed by the watercraft is of a first magnitude, a second magnitude that is greater than the first magnitude, or a third magnitude that is greater than the second magnitude, and an engine speed limiting means step which allows the engine to operate at a speed above the first predetermined speed during a jump of the second magnitude by increasing a power output of the engine.

A watercraft comprising a hull, an engine disposed within the hull, the engine comprising an engine body defining plural cylinders, an engine speed sensor configured to detect a speed of the engine, and a controller connected to the engine speed sensor and configured to control a power output of the engine, the controller being configured to detect a first engine speed, reduce the power output of the engine if the first engine speed is greater than a first predetermined engine speed, detect a second engine speed, and restore the power output of the engine if the second engine speed is less than a second predetermined engine speed that is greater than the first predetermined engine speed.

A watercraft comprising a hull, an engine disposed within the hull, the engine comprising an engine body defining plural cylinders, an engine speed sensor configured to detect a speed of the engine, and means for detecting a first engine speed, reducing the power output of the engine if the first engine speed is greater than a first predetermined engine speed, detecting a second engine speed, and restoring the power output of the engine if the second engine speed is less than a second predetermined engine speed that is greater than the first predetermined engine speed.