VALVE TIMING CONTROL APPARATUS

摘要

A resin member may include a first side wall, which is placed between a first housing and a laminated body, and a second side wall, which is placed between a second housing and the laminated body. A vane rotor may include a pressing oil passage that is configured to guide hydraulic oil to a first seal member and a second seal member to exert a pressing force, which radially outwardly and axially urge the first seal member and the second seal member.

主权项

1. A valve timing control apparatus, which controls opening timing and closing timing of one of an intake valve and an exhaust valve of an internal combustion engine, which is driven by a driven-side shaft of the internal combustion engine, through changing of a rotational phase between a driving-side shaft of the internal combustion engine and the driven-side shaft, the valve timing control apparatus comprising:
a first housing that is rotatable integrally with one of the driving-side shaft and the driven-side shaft; a second housing that is fixed to the first housing and forms a plurality of pressurization compartments in cooperation with the first housing; a vane rotor that includes:
a boss portion that is rotatable integrally with the other one of the driving-side shaft and the driven-side shaft and is placed in one of the first housing and the second housing; anda plurality of vanes, each of which radially extends from the boss portion to partition a corresponding one of the plurality of pressurization compartments into an advancing chamber and a retarding chamber; a first seal member that is placed between the first housing and the vane rotor and is radially and axially movable relative to the vane rotor; and a second seal member that is placed between the second housing and the vane rotor and is radially and axially movable relative to the vane rotor and the first seal member, wherein: the vane rotor includes a pressing oil passage that opens in a contact surface of the vane rotor, which is abuttable against the first seal member, and also opens in a contact surface of the vane rotor, which is abuttable against the second seal member; and the pressing oil passage is configured to guide hydraulic oil, which is received from an outside of the valve timing control apparatus, to the first seal member and the second seal member without passing through the advancing chambers and the retarding chambers of the plurality of pressurization compartment to exert a pressing force, which radially outwardly and axially urge the first seal member and the second seal member.