| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection device for a liquified gas engine having structure in which oil accumulated in a governor chamber of a high pressure pump is circulated to a cam chamber. SOLUTION: The fuel injection device comprises: a high pressure pump 5 increasing pressure of fuel gas by driving a plunger by a cam housed in the cam chamber storing the oil, and discharging fuel gas leaked to the cam chamber 54 from a clearance between the plunger and a sliding wall around the plunger; a liquifying pump 7 in which a cylinder is projected from an outer periphery of the cam chamber 54, a piston rod penetrates a chamber wall of the cam chamber 54 and is driven by the cam of the inside, and the fuel gas discharged from the governor chamber 56 is liquified again; an oil return pipe 10 connecting a space in the cylinder of the liquifying pump 7 with a lower part of the governor chamber 56; and a check valve 11 disposed to the oil return pipe 10. COPYRIGHT: (C)2009,JPO&INPIT
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