Valve train assembly for internal combustion engine

Details Valve train assembly for internal combustion engine Valve train assembly for internal combustion engine

1994-04-22

1995-08-29

Wolfe, Willis R.

Internal-combustion engines

Poppet valve operating mechanism

Overhead camshaft

123 9041, 123 9042, 123 9043, F01L 118, F01L 120

Patent

active

054451183

ABSTRACT:
In order to eliminate components in an internal combustion engine, and to thereby reduce the cost and weight while enhancing compactness in a rigid yet quiet arrangement, a valve train assembly is disclosed. The internal combustion engine has a valve with an integral valve stem, a valve lifter in engagement with a cam, and a rocker arm in engagement with the valve stem. The valve train assembly is such that the rocker arm is in engagement with the valve lifter at a first point along its length and is in engagement with the valve stem at a second point along its length. The rocker arm has a recess at the first point along its length for receiving and engaging the valve lifter therein. The valve train assembly is also such that the rocker arm has a surface at the second point along its length to thereby move the valve in response to movement of the valve lifter. The internal combustion engine also includes a mounting for the rocker arm at a point intermediate the first and second points along its length for pivotal movement thereof. With these features, the valve train assembly is such that movement of the valve lifter is imparted through the rocker arm to the valve stem in a most highly efficient and compact manner in a quiet internal combustion engine.

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patent: 4333426 (1982-06-01), Gavasso et al.
patent: 4505236 (1985-03-01), Nakamura
patent: 4671222 (1987-06-01), Gallot et al.
patent: 4979475 (1990-12-01), Mills

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