ROCKER ARM ASSEMBLY AND COMPONENTS THEREFOR

摘要

A method of precision manufacture of an outer arm of a rocker arm assembly is performed by determining structures of a rough outer arm that would require precision processing and locations to support the structures as they are processed. Starting with at least one structure requiring precision processing, locations on the outer arm close to the structure to hold the outer arm during processing are determined that would cause minimal distortion of the outer arm during processing. The outer arm is then provided with clamping lobes at these locations. The clamping lobes of the outer arm are clamping into a fixture for manufacturing. The slider pad may now be precision ground while the outer arm is clamped in the fixture with minimal risk of distortion of the outer arm.

主权项

1. A lash-controlled switching rocker arm system for controlling an engine valve, comprising:
at least one first cam and a second cam; a rocker assembly having a first end mounted on a fulcrum, and a second end attached to said engine valve, the rocker assembly comprising:
a first arm having a first end and a second end with a roller between the first and second ends riding on the first cam;a second arm having a first end and a second end and at least one slider pad for riding on the second cam;wherein the first arm and second arm are pivotally attached to each other at their first ends; and a latch for preventing pivoting of the first arm relative to the second arm when latched, wherein the roller is designed to wear and decrease lash at the same rate that the at least one slider pad and the latch wear and increase lash to provide substantially constant lash over the lifetime of the rocker assembly.