FUEL INJECTION SYSTEM OF GAS INJECTION ENGINE

Japanese Patent JP2015190328

A

PROBLEM TO BE SOLVED: To improve heat efficiency without injecting a gas fuel at a pressure higher than a present pressure, and suppressing production of NOx, so that environmental conservation and cost reduction can be achieved.SOLUTION: A fuel injection system of a gas injection engine, includes: a main gas fuel injection valve 5 for injecting a gas fuel into a cylinder 1 at a high pressure; a pilot fuel injection valve 6 for pilot-injecting a diesel fuel into the cylinder; a main gas fuel supply device 8 for supplying the high pressure gas fuel to the main gas fuel injection valve; an auxiliary gas fuel injection valve 7 for further injecting the gas fuel into the cylinder; and an auxiliary gas fuel supply device 10 for supplying the gas fuel into the auxiliary gas fuel injection valve. The auxiliary gas fuel injection valve performs pre-injection into the cylinder while a part of the gas fuel necessary for combustion is supplied from the auxiliary gas fuel supply device, before the diesel fuel is pilot-injected from the pilot fuel injection valve, and the main gas fuel injection valve injects the remaining part of the gas fuel into the cylinder at a high pressure after the pilot injection.

OTSU MASAKI

JP2014065973A

November 02, 2015

March 27, 2014

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MITSUI SHIPBUILDING ENG

F02D19/08; F02B7/08; F02B15/00; F02B23/02; F02B43/02; F02D19/02; F02M21/02; F02M61/14

JPS6295151U	1987-06-17
JP2006501395A	2006-01-12
JPH0185453U	1989-06-06
JP2013253529A	2013-12-19
JP2013217334A	2013-10-24
JP2013007320A	2013-01-10
JP2014118858A	2014-06-30
JP2012036780A	2012-02-23

Yoshinori Hagishima

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