Patent ID: 9046014
Filing Date: 2015-06-02
Classification: F01L

Abstract:
1. A valve timing control system for an internal combustion engine, comprising: brushes; slip rings which slide with the brushes; an intake air side valve timing control device main frame and an exhaust side valve timing control device main frame, both of which are rotated on a basis of a rotational force transmitted from a crankshaft and constitute electrically driven valve timing control devices that modify valve timings by performing a feed of an electric power using the brushes and the slip rings, the electrically driven valve timing control devices being disposed on both of an intake air side camshaft and an exhaust side camshaft; an intake air side cover member and an exhaust side cover member, both of which are fixed to the internal combustion engine and each of which houses a corresponding one of the intake air side device main frame and exhaust side device main frame in an inner peripheral side of a corresponding one of the intake air side and exhaust side cover members; and seal members which seal between an outer periphery of each of the intake air side and the exhaust side device main frames and an inner periphery of each of the intake air side and the exhaust side cover members, wherein the brushes and the slip rings are disposed within a space formed between each of the intake air side and exhaust side device main frames and each of the intake air side and the exhaust side cover members and partitioned by means of the respective seal members and the respective cover members are configured to enable radial directional position adjustments by a predetermined quantity and are fixed to the internal combustion engine in a state in which the radial directional position adjustments of the respective cover members have been made.