| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel gas supply device easy in maintenance capable of enhancing the pressure boosting efficiency of liquid fuel with a liquid pump.SOLUTION: A fuel gas supply device for supplying fuel gas into a combustion chamber of a marine vessel diesel engine, comprises: a liquid fuel tank for accumulating liquid fuel prepared by liquefying the fuel gas; a liquid pump for pressure boosting the liquid fuel supplied from the liquid fuel tank; a carburetor for evaporating the liquid fuel supplied from the liquid pump so as to supply it to the combustion chamber; a hydraulic motor for driving the liquid pump; a hydraulic pump for driving the hydraulic motor; an airtight supply pipeline directly connecting the hydraulic motor to the hydraulic pump for supplying the entire hydraulic fluid discharged from the hydraulic pump to the hydraulic motor; an airtight discharging pipeline directly connecting the hydraulic motor to the hydraulic pump for returning the entire hydraulic fluid discharged from the hydraulic motor to the hydraulic pump; an electric motor for driving the hydraulic pump; and a control part for controlling the number of rotation of the hydraulic pump by speed-controlling the electric motor. |
