Latchable rocker arm mounting

Details Latchable rocker arm mounting Latchable rocker arm mounting

1995-12-20

1996-12-17

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Rocker

123 9041, 123198F, F01L 118, F02D 1306

Patent

active

055842674

ABSTRACT:
An improved mounting for a latchable rocker arm assembly. A pivot bar is received transversely through a first rocker arm and is engageable with the output member of a hydraulic lash adjuster or other pivot member. The pivot bar has a convex arcuate upper surface engageable with a concave bearing surface formed on the second arm and a spherical socket formed in its bottom surface, the spherical socket being engageable with a spherical end formed on the pivot member. In accordance with other aspects of the invention the pivot bar serves as an anchor point for ends of a torsion spring biasing the rocker arm assembly in a latched position and has a hole formed therein which in combination with a hole formed in the second rocker arm and an oil port formed in the pivot member provides a conduit directing lubricating oil to an area of the second rocker arm which receives a roller bearing assembly.

REFERENCES:
patent: 5203289 (1993-04-01), Hara et al.
patent: 5386806 (1995-02-01), Allen et al.
patent: 5413071 (1995-05-01), Paul et al.
patent: 5435276 (1995-07-01), Nakamura et al.

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