Valve actuator for internal combustion engine
A valve actuating mechanism is described for an overhead valve and overhead cam type internal combustion engine in which the camshaft is positioned above and between the valve and a cam follower seat member in a cylinder head of the engine. The cam follower seat member is threadedly mounted in the cylinder head and has a semi-spherical recess facing upwardly. A cam follower has an adjustable bolt threadedly received in one end of the cam follower. The adjustable bolt has a spherical fulcrum engaging the semispherical recess of the seat member. The cam follower also has a downwardly facing means on the other end for engaging the valve and an upwardly facing slipper face for sliding engagement with a cam on the camshaft. The cam is adapted to rotate across the slipper face in the direction of the valve. The slipper face has a surface shape for engaging the cam at the start of valve-lifting movement of the cam follower at a point through which a line tangent to the slipper face is substantially parallel to a line through contact points between the cam follower. The seat member and valve for minimizing the lateral forces are imposed on the cam follower by the cam at the start of the valve-lifting movement.
- Assignee:
- Honda Giken Kogyo Kabushiki
- Patent Number(s):
- US 4672927
- OSTI ID:
- 6169581
- Resource Relation:
- Patent File Date: Filed date 27 Jan 1985
- Country of Publication:
- United States
- Language:
- English
Similar Records
Variable valve lift/timing mechanism
Rocker arm spring for a valve actuating mechanism of an internal combustion engine