| 摘要 |
PROBLEM TO BE SOLVED: To provide a variable capacity type oil pump which can properly supply oil into a clearance between a slider guide and an outer rotor, can thereby elongate a life, and can improve efficiency.SOLUTION: A variable capacity type oil pump 1 comprises: a slider guide 5 which slide-contacts with an external peripheral face of an outer rotor 6 at its internal peripheral face, is movably arranged in a housing 4 together with the outer rotor 6, and changes a discharge amount of oil to a discharge port 4c by varying an eccentric amount of an inner rotor 7 with respect to the outer rotor 6 by moving together with the outer rotor 6; and a first hydraulic pressure chamber 4d which is arranged in a region on the discharge port 4c side in the housing 4, and supplied with hydraulic pressure for driving the slider guide 5. The hydraulic pressure supplied to the first hydraulic pressure chamber 4d is controlled according to the discharge pressure of the oil discharged to the discharge port 4c. |
