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Method for operating marine vessel comprising plurality of propulsion units

A technology for propulsion units and ships, which is applied in the direction of steering and steering with propulsion components, ship propulsion, propulsion components, etc. It can solve the problems of increasing and reducing the total thrust of the ship, and achieve the effects of reducing noise, stable combined thrust, and continuous combined thrust

Active Publication Date: 2019-08-27
VOLVO PENTA AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Air pockets can lead to reduced propeller 'grip' in water
[0004] It is known to use the middle propulsion unit in sway maneuvers of ships with three propulsion unit arrangements to increase the reverse thrust, thereby limiting the rotational speed of the engine for the propulsion unit in reverse gear so that the cavitation effect is limited , and at the same time allows higher thrust on the forward propulsion unit, thus increasing the overall thrust of the ship

Method used

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  • Method for operating marine vessel comprising plurality of propulsion units
  • Method for operating marine vessel comprising plurality of propulsion units
  • Method for operating marine vessel comprising plurality of propulsion units

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Embodiment Construction

[0041] figure 1 A perspective view of a watercraft 1 in the form of a small motorboat is shown, in which an embodiment of the invention is used. In general, marine propulsion control systems according to embodiments of the present inventive concepts may be used in any type of surface vessel, such as large commercial vessels, boats for transporting cargo and / or personnel, recreational boats, and other types of surface vessels.

[0042] Such as figure 1 As further schematically shown in FIG. 1 , a ship 1 has a hull 2 ​​with a bow 3 and a stern 4 . The vessel has two symmetrical sections on opposite sides of a longitudinal centerline extending from bow 3 to stern 4 and said two symmetrical sections are parallel to the intended straight-line direction of travel of the vessel.

[0043] In the stern 4, three propulsion units 106, 107, 108 in the form of outboard motors are installed. More precisely, the vessel 1 is provided with a first propulsion unit 106 arranged towards the po...

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Abstract

The invention provides a method for operating a marine vessel (1) comprising a plurality of propulsion units (106, 107, 108, 206, 207, 208), each being arranged to deliver thrust to water in which thevessel (1) is floating, the thrust delivery levels of the propulsion units (106, 7, 108, 206, 207, 208) being individually controllable, the method comprising controlling (S2) a first (106, 207) of the propulsion units so as to deliver a thrust in a direction (T106, T207) which has a component in a first direction (F) of the vessel, simultaneously controlling (S2) a second (107, 208) of the propulsion units so as to deliver less thrust than the first propulsion unit (106, 207), and subsequently increasing (S4) the thrust delivered by the 10 second propulsion unit (107, 208) in a direction (T107, T208) which has a component in the first direction (F), the method further comprising simultaneously with increasing the thrust delivered by the second propulsion unit (107, 208) decreasing (S5) the thrust delivered by the first propulsion unit (106, 207).

Description

technical field [0001] The invention relates to a method of operating a vessel comprising a plurality of propulsion units, each propulsion unit being arranged to transmit thrust into water in which the vessel floats. The invention also relates to a computer program, a computer readable medium, a control unit, a ship propulsion control system and a ship. [0002] The present invention is not limited to any particular type of vessel. Rather, the invention may be used with any type and size of watercraft, surface craft and submarines. Background technique [0003] In marine propulsion control systems for controlling a set of propulsion units carried by the hull of a vessel, cavitation typically occurs on the propulsion units with reverse gear engaged. For example, in a roll maneuver (where one propulsion unit is in forward gear and the other is in reverse gear), the engine for the reverse propulsion unit may need to be controlled at a relatively high speed to match that of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H20/00B63H25/42
CPCB63H20/00B63H20/007B63H20/20B63H25/42B63H2020/003B63B34/05B63H5/125
Inventor 塞巴斯蒂安·尼尔森
Owner VOLVO PENTA AB