Method and apparatus of controlling an engine at start-up, and a personal watercraft
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorSatoru Watabe
Life of this patent
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Abstract
A method and apparatus of controlling an engine at the time of first combustion during start-up in which an increase in an engine speed can be regulated, and thus noises and vibrations of the engine are reduced, and a personal watercraft which does not unintentionally start moving at start-up. The method comprising the steps of detecting the start-up of the engine; detecting a warm-up condition of the engine; and controlling the engine to inhibit combustion of at least one of the cylinders of the engine according to the warm-up condition upon the detection of the start-up.
Claims14
A method of controlling an engine speed of a multi-cylinder engine to regulate an increase of the engine speed at a start-up of the engine, comprising the steps of:
- detecting the start-up of the engine;
- detecting a warm-up condition of the engine;
- and
- controlling the engine to inhibit combustion of at least one of the cylinders of the engine, according to the warm-up condition upon the detection of the start-up.
An apparatus for controlling an engine speed of a multi-cylinder engine to regulate an increase of the engine speed at a start-up of the engine, comprising:
- a start-up detector for detecting the start-up of the engine;
- a warm-up condition detector for detecting a warm-up condition of the engine;
- and
- a controller for controlling the engine to inhibit combustion of at least one of the cylinders of the engine according to the warm-up condition detected by the warm-up condition detector upon the detection of the start-up by the start-up detector.
A personal watercraft comprising:
- a multi-cylinder engine;
- a water jet pump with which an input shaft thereof is connected rotatably full-time with an output shaft of the engine;
- and
- an apparatus for controlling an engine speed of the engine to regulate an increase of the engine speed at a start-up of the engine, the apparatus including:
- a start-up detector for detecting the start-up of the engine;
- a warm-up condition detector for detecting a warm-up condition of the engine;
- and
- a controller for controlling the engine to inhibit combustion of at least one of the cylinders of the engine according to the warm-up condition detected by the warm-up condition detector upon the detection of the start-up by the start-up detector.
Dependencies are inferred from the claim text.