VALVE ROTATION DEVICE

摘要

A valve rotation includes: a first sheet member that extends toward a surrounding of a valve stem under a condition that a rotation action of the first sheet member is suppressed with respect to a cylinder head, and a second sheet member that faces to the first sheet member, that is capable of rotating with respect to the first sheet member and is subjected to a load for opening the valve; a force conversion structure that converts the load for opening the valve applied to the second sheet member into a rotation force.

主权项

1. A valve rotation device that rotates a valve fixed to an internal combustion engine, comprising:
a first sheet member that extends toward a surrounding of a valve stem of the valve under a condition that a rotation action of the first sheet member is suppressed with respect to a cylinder head of the internal combustion engine; a second sheet member that faces to the first sheet member, is capable of rotating with respect to the first sheet member and is subjected to a load for opening the valve; a force conversion structure that converts the load for opening the valve applied to the second sheet member into a rotation force in a direction around the valve stem of the second sheet member; and an elastic body that accumulates an elastic energy when the valve is opened and the load for opening the valve rotates the second sheet member via the force conversion structure, and rotates the second sheet member by a storing force caused by the elastic energy when a phase of the valve gets closer to a valve-closed phase and the load for opening the valve is reduced, wherein the valve rotates together with the rotation of the second sheet member.