VARIABLE VALVE DEVICE

摘要

A variable valve operating apparatus is provided, which can change a rotational speed of a driven cam lobe for an interval in which a drive camshaft makes one rotation, without complicating an apparatus configuration as much as possible, in the case of using a configuration which drives the drive camshaft by a rotational force of a crankshaft. A drive camshaft (12) that is rotationally driven by the rotational force of the crankshaft, and a driven cam lobe (18a) that is rotatably supported by the drive camshaft (12) are included. A guide member (36) that has a raceway surface (36a1) formed so as to surround the drive camshaft (12) is included. A link mechanism (35) that is connected to each of the drive camshaft (12) and the driven cam lobe (18a), and has a control roller (32) which is in contact with the raceway surface (36a1) is included. A link plate (34) and holding rollers (38) that maintain contact between the raceway surface (36a1) and the control roller (32) while the drive camshaft (12) makes one rotation are included. An actuator (42) that drives the guide member (36) is included.