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1. (WO2018101155) VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Pub. No.:    WO/2018/101155    International Application No.:    PCT/JP2017/042126
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Sat Nov 25 00:59:59 CET 2017
IPC: F01L 1/356
Applicants: HITACHI AUTOMOTIVE SYSTEMS, LTD.
日立オートモティブシステムズ株式会社
Inventors: WATANABE, Kotaro
渡辺 孝太郎
Title: VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Abstract:
In this valve timing control device for an internal combustion engine, a communication groove which is disposed in a vane rotor provided with a locking mechanism and which provides communication between a back-pressure chamber, which has disposed therein a biasing member for biasing a locking member, and the outside of the housing is formed such that the cross-sectional area of an opening part opening to the back-pressure chamber is smaller than the cross-sectional area of the communication groove on the outer side of the housing.