Patent ID: 6311654
Filing Date: 2001-11-06
Classification: F01L

Abstract:
A valve timing adjusting device for an internal combustion engine having a drive shaft, an intake valve, an exhaust valve and a driven shaft which opens and closes at least one of the intake valve and the exhaust valve, comprising:a housing which rotates together with the drive shaft, said housing having a housing chamber defined therein;a chain sprocket mounted to at least one of the drive shaft and the housing for rotating together therewith, said chain sprocket having a chain sprocket space defined therein;a vane housed in said housing chamber to rotate together with the driven shaft relative to said housing within a predetermined rotational phase difference;an advance angle fluid pressure chamber for rotating said vane relative to said housing in an advancing direction by a fluid pressure;a retard angle fluid pressure chamber for rotating said vane relative to said housing in a retarding direction by said fluid pressure;a hydraulic pump for supplying a working fluid to said advance angle fluid pressure chamber and to said retard angle fluid pressure chamber;first bias means housed in said chain sprocket space for biasing said vane in an advancing direction of the driven shaft relative to the drive shaft; anda partition member provided between said housing and said chain sprocket for separating said housing chamber from said chain sprocket space,wherein said partition member comprises a seal that prevents fluid from leaking out from said housing chamber or said chain sprocket space to an outside thereof.