VALVE TIMING CONTROL DEVICE

摘要

In order to achieve excellent control responsiveness of the relative rotation phase and easy work fluid flow passage formation, this valve timing control device comprises: a drive-side rotating body; a driven-side rotating body; a cylindrical member inside of the driven-side rotating body; a cylindrical bolt which links a camshaft and the driven-side rotating body inside of the cylindrical member; an introduction path which is disposed in the bolt and/or the cylindrical member and circulates the work fluid in the direction of the rotational axis; an introduction communication passage which is provided in the bolt and circulates the work fluid in the introduction path into the inside of the bolt; an advanced angle communication passage and a retard angle communication passage in different positions in the longitudinal direction of the rotational axis; and a control valve body which reciprocates inside of the bolt in the direction of the rotational axis and supplies the work fluid to the advanced angle communication passage or the retard angle communication passage.