| 摘要 |
<p>PURPOSE:To prevent the occurrence of wear between a plunger and a cylinder and between a shaft and a rotor, by a method wherein the axis of the cylinder is inclined in the advancing direction of the rotor, and the inner peripheral part of a cylinder hole is disposed near the side in the advancing direction of the rotor than the axis of the cylinder. CONSTITUTION:When a rotor 30 is rotated on the outer periphery of a shaft 20, a plunger 40 is reciprocated in a cylinder 31 as it is slid over the inner surface of a cam ring 50. In which case, fuel is fed through a suction control opening 21 to a delivery control opening 22. In this constitution, an axis 32 of the cylinder 31 is inclined in the rotation direction of the rotor 30 at a given angle with a line for interconnecting the center of the shaft 20 and a reference point 42 of the plunger 40. The inner peripheral part of a cylinder hole 33 for intercommunicating the interior of the cylinder 31 and each of the openings 21 and 22 is positioned further near the side in the advancing direction of the rotor 30 than the axis 32 of the cylinder 31. The direction of resultant forces, generated between the interior of the cylinder 31 and the shaft 20 or the rotor 30 and pressing the rotor 30, are coincided with each other in a reverse direction to each other.</p> |
