Patent ID: 6457447
Filing Date: 2002-10-01
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 one of the drive shaft and the driven shaft; a housing chamber formed in said housing; a vane housed in said housing chamber to rotate together with the other one of the drive shaft and the driven shaft relative to said housing within a predetermined rotational phase difference, said vane dividing said housing chamber into an advance angle pressure chamber and a retard angle pressure chamber; and first bias means for biasing said vane in an advancing direction of the driven shaft relative to the drive shaft, wherein; a biasing force of said first bias means is between 10% of an average torque in an idling rotation range of the driven shaft and a maximum torque in an inertial rotation range of the driven shaft.