METHOD FOR SUPPLYING FUEL FOR HIGH PRESSURE NATURAL GAS INJECTION ENGINE

摘要

PURPOSE: A fuel supply method for a high-pressure natural gas injection engine is provided for surplus BOG to be used in a dual fuel engine as the BOG is directly compressed at 4~8bara in a LNG storage tank. CONSTITUTION: A fuel supply method for a high-pressure natural gas injection engine comprises following steps. The Bog generated in a storage tank is compressed, and liquefied. LBOG(Liquefied Boil Off Gas) is compressed at high pressure, and vaporized. The vaporized BOG is supplied to the high-pressure natural gas injection engine. Re-liquefaction temperature is 0.5~3°C lower than the saturation temperature of the correspondent pressure. [Reference numerals] (AA) Saving the energy for re-liquefaction; (BB) Storage tank; (CC) Evaporated gas compressor; (DD) Heavy boil off gas; (EE) Re-liquefying apparatus; (FF) Fuel gas supply system; (GG) High pressure liquid boil off gas; (HH) ME-GI engine