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1. (WO2013146824) SHIP, FUEL GAS SUPPLY APPARATUS, AND FUEL GAS SUPPLY METHOD

Pub. No.:    WO/2013/146824    International Application No.:    PCT/JP2013/058872
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Wed Mar 27 00:59:59 CET 2013
IPC: F02B 43/00
B63B 25/16
B63H 21/14
B63H 21/38
F02M 21/02
Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD.
三菱重工業株式会社
Inventors: OKA, Masaru
岡 勝
Title: SHIP, FUEL GAS SUPPLY APPARATUS, AND FUEL GAS SUPPLY METHOD
Abstract:
In order to achieve both absorption of CNG pulsation and high response of pressure supply to a diesel engine, a ship is provided with: a main pipe (7) that guides CNG whose pressure is increased by an LNG pump to the engine; a pressure sensor (32) that measures the pressure of CNG supplied to the engine; a pressure adjustment valve (10) that adjusts the pressure of the CNG to a set pressure in accordance with engine load; a differential pressure sensor (36) that measures a differential pressure before and after the pressure adjustment valve (10); and a buffer tank (14) that absorbs a variable pressure of the CNG in the main pipe (7). The discharge pressure of the LNG pump is controlled such that, when the pressure obtained by the pressure sensor (32) is low, the differential pressure obtained by the differential pressure sensor (36) is increased while when the pressure obtained by the pressure sensor (32) is high, the differential pressure obtained by the differential pressure sensor (36) is decreased.