System for supplying fuel gas for megi engine and method thereof

The present invention relates to a fuel gas supply system and method of supplying the MEGI engine, and the high-pressure pump, which is installed from the LNG storage tank, LNG is to be supplied by compressing the LNG to the feed line and the supply line to be supplied to the MEGI engine, the high-pressure pump and the vaporizer, which is installed in the supply line so as to vaporize the compressed LNG by, and a pressure control valve which is installed at the rear end of the vaporizer in the supply line, a pressure control valve of a pressure keeping to maintain a constant pressure difference between the front end and the rear end that the fuel gas supply system of the MEGI engine, characterized in that there is provided, including. According to the invention, it has to inefficiently to increase the pressure in the low MEGI engine load of eliminating saving energy and, going bring a constant pressure difference between the front end and rear end of the path to which fuel gas is supplied to the temperature of the feed gas and so as to remain constant without any action, the supply of the heating medium in an excess amount to the vaporizer regardless of temperature change it can be kept constant at all times the temperature of the fuel gas.