| 摘要 |
<P>PROBLEM TO BE SOLVED: To shorten the time required for recovering DME (dimethyl ether) fuel in an injection system to a fuel tank after stopping a diesel engine in a DME fuel supply device of the diesel engine. <P>SOLUTION: A low pressure tank 17 reduces in internal pressure by being sucked by a compressor 16. The inside of the low pressure tank 17 is put in a constant low pressure state by maintaining the oil separator 13 side under constant pressure by a check valve 14. A purge pipe opening-closing solenoid valve 18 is turned on when stopping the diesel engine in a state of maintaining the inside of the low pressure tank 17 in a constant low pressure state, and when communicating the low pressure tank 17 with an overflow fuel pipe 81, a part of the DME fuel remaining in the overflow fuel pipe 81 is sucked in the low pressure tank 17 by negative pressure in the low pressure tank 17. <P>COPYRIGHT: (C)2004,JPO |
