SHIP MANEUVERING DEVICE - YANMAR CO LTD

Title:

SHIP MANEUVERING DEVICE

Document Type and Number:

WIPO Patent Application WO/2013/001874

Kind Code:

A1

Abstract:

The objective of the present invention is to provide a ship maneuvering device that can easily maneuver a ship by rotating a propeller at a lower rotational frequency than the rotational frequency of the minimum idling speed of an engine. A control device (4) has a crawling speed navigation mode; a crawling speed navigation mode button (28) that selects whether or not to execute the crawling speed navigation mode is connected to the control device (4); when the execution of the crawling speed navigation mode is selected, when the amount of operation of a joystick lever (20) is at or beneath a baseline amount of operation (Ms), the control device (4) causes the rotational frequency (N) of the engine to be the rotational frequency (Nlow) of the minimum idling speed, and in accordance with the amount of operation of the joystick lever (20), varies the duty ratio (D), which is the fraction of time (T1) that a main clutch (23) is engaged in a predetermined cycle (T), within a range of no greater than 100%.

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Inventors:

HITACHI JUNICHI (JP)
HARA NAOHIRO (JP)
NAKANISHI TAKAO (JP)

Application Number:

PCT/JP2012/058428

Publication Date:

January 03, 2013

Filing Date:

March 29, 2012

Export Citation:

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Assignee:

YANMAR CO LTD (JP)
HITACHI JUNICHI (JP)
HARA NAOHIRO (JP)
NAKANISHI TAKAO (JP)

International Classes:

B63H21/21; B63H23/30; B63H25/42

Foreign References:

JP2009202778A	2009-09-10
JP2005145439A	2005-06-09
JPH01285486A	1989-11-16

Other References: