| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a reciprocating pump that can feed fuel with high efficiency by reducing dead volume in a plunger chamber, and reducing internal leakage and driving torque. SOLUTION: A pair of plates 9, 10 are pressure-fixed through a barrel 17 so as to reduce leakage from the discharge passage 12 side to an intake passage 11 side. A base end of a plunger 26 is fixed to a base 25 of a bellows 23, and the plunger 26 is moved back by pressure difference generated between the inside and outside of the bellows 23 and restoring force of the bellows 23 so as to disuse a coil spring between the plate 10 and the plunger 26.</p> |
