| 摘要 |
<P>PROBLEM TO BE SOLVED: To inject volatile fuel such as LPG in an always stable liquid condition and reduce electric power consumption of a fuel pump. <P>SOLUTION: Two fuel pumps 7, 8 are provided in series in a supply conduit 2 from a fuel tank 1 to a fuel injection valve 4 and a return conduit 9 of surplus fuel is connected to an inlet side of the second stage fuel pump 8. Liquid fuel F pressurized by the second stage fuel pump 8 during normal operation is sent to the fuel injection valve 4 and surplus fuel is circulated and injection fuel quantity is filled up through the first stage fuel pump 7. The first stage fuel pump 7 is temporally operated at high delivery pressure to increase fuel injection pressure in high temperature restarting. Consequently, injection is carried out always in liquid condition and electric power consumption can be reduced. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
