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Patent Searching and Data


Title:
SHIP ENGINE CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2010/113652
Kind Code:
A1
Abstract:
A main engine is operated at an efficient rotational frequency to match fluctuations in propeller inflow velocity, and fuel efficiency is increased. The divergence between a rotational frequency command and measured variations in rotational frequency (NE) of a main axle (13) or the main engine (12) is inputted into a proportional-integral-derivative (PID) computation unit (16), and feedback control is performed on the quantity of fuel supplied from a fuel injection device (15) to the main engine (12). The propeller inflow velocity of a propeller (14) is detected and inputted into a computation unit (17). The rotational frequency command is adjusted such that the control point moves along an efficiency curve in response to fluctuations in propeller inflow velocity.

Inventors:
INAMI Shouichi (1-1, Tama 3-chome, Tamano-sh, Okayama 51, 〒7068651, JP)
稲見昭一 (〒51 岡山県玉野市玉3丁目1番1号 三井造船株式会社 玉野事業所内 Okayama, 〒7068651, JP)
Application Number:
JP2010/054633
Publication Date:
October 07, 2010
Filing Date:
March 18, 2010
Export Citation:
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Assignee:
MITSUI ENGINEERING & SHIPBUILDING CO., LTD. (6-4 Tsukiji 5-chome, Chuo-ku Tokyo, 39, 〒1048439, JP)
三井造船株式会社 (〒39 東京都中央区築地5丁目6番4号 Tokyo, 〒1048439, JP)
INAMI Shouichi (1-1, Tama 3-chome, Tamano-sh, Okayama 51, 〒7068651, JP)
International Classes:
F02D29/02; B63H5/07; B63H21/12
Foreign References:
JPS58143144A
JPH09158761A
JPS5756639A
JP2006009601A
JPH03100600U
Attorney, Agent or Firm:
MATSUURA Takashi (Fuji Bldg. #418, 2-3 Marunouchi 3-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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