INTERNAL COMBUSTION ENGINE CONTROLLING FUEL GAS INJECTION PRESSURE

Japanese Patent JP2015057548

A

PROBLEM TO BE SOLVED: To optimize efficiency of an internal engine when the internal engine operates with fuel gas at a changing energy density of a liquefied natural gas carrier.SOLUTION: A two-stroke crosshead diesel engine comprises: a fuel gas supply system 19; cylinders 11 provided with fuel gas injectors 14 for injecting fuel gas directly into combustion chambers of the cylinders 11; and at least one engine control unit 17 controlling the amount of fuel gas injected into the combustion chambers according to an applied fuel index for achieving a desired engine speed at a given engine load, the amount of fuel gas injected being controlled by adjusting a duration of a fuel gas injection period on the basis of the fuel index. A sensor device 40 is provided to measure an engine load during operation, and the at least one engine control unit 17 controls the injection pressure of the fuel gas injected into the combustion chambers in response to a change in an energy density of the fuel gas so that the applied fuel index can correspond to a reference fuel index.

JENS RANE BAUNGAARD

JP2014211815A

March 26, 2015

October 16, 2014

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MAN DIESEL & TURBO DEUTSCHLAND

F02D41/04; B63B25/16; B63H21/14; B63H21/38; F02B43/00; F02B61/04; F02B69/04; F02D13/02; F02D19/06; F02D43/00; F02D45/00; F02M21/02

JPH09209788A	1997-08-12
JP2004346911A	2004-12-09
JP2000170581A	2000-06-20
JPH1193776A	1999-04-06
JP2010248968A	2010-11-04

Masatoshi Kurata
Toshihiro Fukuhara
Nobuhisa Nogawa
Peak Takashi
Naoki Kono
Sunagawa 克
Iseki Mamoru 3
Tatsushi Sato
Okada Kishi
Mihoko Horiuchi

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