VALVE OPENING AND CLOSING TIMING CONTROL APPARATUS

摘要

A valve opening and closing timing control apparatus includes a driving-side rotation member, a driven-side rotation member, a tubular member provided at an inner portion of the driven-side rotation member, a bolt in a tubular form provided at an inner side of the tubular member, an introduction passage provided at least at one of the bolt and the tubular member between the bolt and the tubular member and bringing a working fluid to flow in the rotation axis direction, an introduction communication passage provided at the bolt to bring the working fluid at the introduction passage to flow to an inner side of the bolt, an advanced angle communication passage and a retarded angle communication passage provided at different positions from each other in a longitudinal direction of the rotation axis, and a control valve body provided at the inner side of the bolt.

主权项

1. A valve opening and closing timing control apparatus comprising
a driving-side rotation member synchronously rotating with a drive shaft of an internal combustion engine; a driven-side rotation member supported at an inner side of the driving-side rotation member to be rotatable at a rotation axis serving as a common rotation axis between the driven-side rotation member and the driving-side rotation member, the driven-side rotation member integrally rotating with a camshaft for opening and closing a valve of the internal combustion engine; a tubular member provided at an inner portion of the driven-side rotation member; a bolt in a tubular form provided at an inner side of the tubular member to connect the driven-side rotation member and the camshaft to each other; an advanced angle chamber and a retarded angle chamber defined and provided between the driving-side rotation member and the driven-side rotation member; an advanced angle flow passage and a retarded angle flow passage provided at the driven-side rotation member, the advanced angle flow passage being in communication with the advanced angle chamber, the retarded angle flow passage being in communication with the retarded angle chamber; an introduction passage provided at least at one of the bolt and the tubular member between the bolt and the tubular member, the introduction passage bringing a working fluid supplied from an outside to flow along a longitudinal direction of the rotation axis; an introduction communication passage provided at the bolt to bring the working fluid at the introduction passage to flow to an inner side of the bolt; an advanced angle communication passage and a retarded angle communication passage provided at different positions from each other along the longitudinal direction of the rotation axis of the bolt; and a control valve body provided at the inner side of the bolt to reciprocate along the rotation axis, the control valve body supplying the working fluid from the introduction communication passage to one of the advanced angle communication passage and the retarded angle communication passage.