| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection pump which can be manufactured without an increase in the manufacturing cost and which is configured so that the sealing performance of a solenoid spill valve can be maintained with minimum maintenance cost. <P>SOLUTION: A solenoid spill valve 20 includes: a housing 21 in which an insert piece insertion hole 21e is formed; an insert piece 22 which is formed into a substantially hollow cylindrical shape having a valve seat 22b on the inner peripheral surface thereof and which is removably mounted in the insert piece insertion hole 21e; a spill valve element 23 which is formed in a substantially solid cylindrical shape having on the outer peripheral surface thereof a seal surface 23b facing the valve seat 22b and which is slidably inserted in the insert piece 22 so that the seal surface 23b is seated on the valve seat 22b; a stopper 24 which can be in contact with the spill valve element 23 when the spill valve element 23 is slid to the left side of the insert piece 22 in the axial direction; a solenoid 25 which can slide the spill valve element 23 to the right side in the axial direction; and a spill valve spring 23e which is the pressing member for pressing the spill valve element 23 to the left side in the axial direction. <P>COPYRIGHT: (C)2011,JPO&INPIT |
