Abstract: An oil pump includes: an inner rotor including external teeth; an outer rotor including internal teeth; a housing configured to accommodate the inner and outer rotors; an inlet port formed in the housing and configured to guide oil into a pump chamber between the external and internal teeth; an outlet port formed in the housing and configured to guide the oil to the outside of the pump chamber; and a discharge hole formed in the housing and configured to guide bubbles in the oil to the outside of the pump chamber. The discharge hole communicates with the pump chamber earlier than a timing when the pump chamber and the outlet port communicate with each other. The outlet port communicates with the pump chamber later than a timing when the pump chamber has a maximum volume.

Abstract: A variable valve timing control device includes a driving side rotation member, a driven side rotation member, a fluid pressure chamber, a first flow path and a second flow path allowing a flow of an operation fluid into and out of the fluid pressure chamber, an intermediate member being provided between an inner circumferential surface of the driven side rotation member and an outer circumferential surface of a camshaft, and a contact portion where the intermediate member and the driven side rotation member come in contact with each other at a position between the first flow path and the second flow path when mounting the intermediate member to the camshaft.