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US 6,439,177 B2Granted
Low friction variable valve actuation device
AssigneeDelphi Technologies, Inc.
InventorRonald J. Pierik
Life of this patent
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AssigneeDelphi Technologies, Inc.
InventorRonald J. Pierik
Estimating the term…
A variable valve train device for use on an internal combustion engine having a rotary camshaft with adjacent valve-opening and valve-closing lobes. The device is mounted on the engine head and is pivotable about the camshaft to alter the timing and lift of a fuel intake valve. A command link controls the rotational position of the apparatus with respect to the camshaft and is rotationally supported by a cylindrical shell bearing mounted on the engine head coaxial with the camshaft. The shell bearing is supported by an hydraulic lash adjuster or an adjustable ball joint to minimize mechanical lash in the device. The command link includes a ring gear which meshes with a control shaft gear for advancing or retarding the valve timing. The command link pivotably supports a rocker assembly for following the rotary motion of the valve-opening and valve-closing cam lobes. The rocker assembly is linked to an output cam disposed between the camshaft and a roller finger follower for actuating the valve.
A variable valve train device for cooperating with an input camshaft to vary the action of a cylinder valve in a head of an internal combustion engine, wherein said camshaft is provided with a valve-opening lobe and a valve-closing lobe, the device comprising:
An internal combustion engine, comprising:
Dependencies are inferred from the claim text.