Stamped roller-type cam followers with added height

Details Stamped roller-type cam followers with added height Stamped roller-type cam followers with added height

1997-05-15

1998-10-13

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Rocker

123 9039, 123 9042, 123 9046, 74519, 74559, F01L 118, F01L 124

Patent

active

058196943

ABSTRACT:
The invention provides a new roller-type cam follower for transmitting valve-opening impulses from an overhead camshaft of an internal combustion engine. The follower has an integral, one-piece cold-formed cam follower body with a U-shaped, cam-facing cross-section at a support end of the follower which rides on a valve lifter post. Added height is provided by the combination of an inverted U-shaped cross-section of the movable, valve-engaging end of the follower with a separate insert secured into its section. The insert can be arcuate or spring-like and can be attached to a movable end of the cam follower or can be a cup-like insert attached to a support end of the follower. A cam follower with novel oiling structure is also disclosed.

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