| 摘要 |
PROBLEM TO BE SOLVED: To prevent a leakage of a fuel from respective injection holes by maintaining the injection holes of respective fuel injector to an approximately atmospheric pressure at the time of stopping of an engine in the engine using a liquefied gas fuel. SOLUTION: A high pressure route closing valve 11 is provided on a high pressure fuel feeding passage S at an upstream side of a common rail 4 and a return route switch valve 12 and a pressure adjuster 7 are provided on a fuel return route at a downstream side of the common rail 4 to constitute a separation part K between both valves 11, 12. A by-path route P through the pressure adjuster 7 is provided between the separation part K and the fuel return route R and a by-path route closing valve 23, a multi-winding capturing pipe 10 and a compressor 11 are provided thereon. Pressure sensors 31, 32 are provided at the separation part K and the multi-winding capturing pipe 10. The respective valves or the like are controlled at the time of stopping of the engine, and a pressure in the separation part K is reduced. COPYRIGHT: (C)2003,JPO
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