A large-sized 2-stroke exhaust turbosupercharging type compression ignition type internal combustion engine provided with an emission-gas-purification system

Japanese Patent JP6235653

B2

Disclosed is a crosshead type large two-stroke turbocharge compression ignition internal combustion engine. The engine includes: a turbocharger including an exhaust gas operating turbine connected with a compressor to deliver pressurizing swamp gas; a plurality of cylinders connected with an exhaust gas storage part and a swamp gas storage part; a selective catalyst reducing reactor including an inlet connected with an outlet of the exhaust gas storage part; an exhaust duct connecting an outlet of the selective catalyst reducing reactor to an inlet of the turbine; a swamp gas duct connecting an outlet of the compressor to an inlet of the swamp gas storage part through a swamp gas cooler; a sub ventilator in the swamp gas duct, assisting the compressor in a low load condition of the engine; a controllable bypass duct extended from a predetermined position in the swamp gas duct to a predetermined position in the exhaust duct in order to bypass the cylinders; an electronically controllable bypass ventilator assisting the flow of the swamp gas flowing from the swamp gas duct to the exhaust duct; and an electronic control device connected with the electronically controllable bypass ventilator to be operable. The electronic control device is formed to control the flow of the swamp gas flowing from the swamp gas duct to the exhaust duct through the controllable bypass duct.

Pieda schorjeya

JP2016112431A

November 22, 2017

June 06, 2016

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MNA Diesel and Turbo Filial Aff MNA Diesel and Turbo STI Tskrand

F01N3/08; F01N3/20; F01N3/24; F02B25/26; F02B37/00; F02B37/04

JP2011236892A
JP3242414A
JP200365121A
JP57010735A
JP2005042672A
JP2010121596A
JP2013160182A

Kawamori Mitsunori

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