MARINE ENGINE CONTROL SYSTEM AND METHOD

PROBLEM TO BE SOLVED: To improve fuel economy by correcting a number-of-rotations command according to disturbance.SOLUTION: The actual number of rotations Nof a main shaft 14 connected to a main engine 12 is detected. A PID operation is performed on the difference between a number-of-rotations comm...

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Bibliographische Detailangaben
Hauptverfasser:	TSUJI YASUYUKI, MIYATA JUNYA, INAMI SHOICHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MARINE PROPULSION OR STEERING MECHANICAL ENGINEERING PERFORMING OPERATIONS RELATED EQUIPMENT SHIPS OR OTHER WATERBORNE VESSELS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve fuel economy by correcting a number-of-rotations command according to disturbance.SOLUTION: The actual number of rotations Nof a main shaft 14 connected to a main engine 12 is detected. A PID operation is performed on the difference between a number-of-rotations command Nand an actual number of rotations Nin a control operation unit 17. A governor command obtained by the PID operation is output to a governor 13 to control the fuel quantity to be supplied to the main engine 12. Further, the governor command and the actual number of rotations Nare input to an observer 18 of a control subject S to estimate the propeller inflow velocity variation. In an operation unit 19, the number-of-rotations command Nis corrected by multiplying the propeller inflow velocity variation by a predetermined gain and adding the result to the number-of-rotations command N.