System and method for actuating an engine valve of an internal combustion engine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10746063
APP PUB NO 20190162085A1
SERIAL NO

16110517

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Abstract

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An actuating system of an engine valve comprises a movable member, for example, in the form of a master piston controlled by a cam of a camshaft. A slave piston is hydraulically controlled by the master piston by means of a volume of pressurized fluid, to open said engine valve against the action of a return spring. The system also comprises an auxiliary device for applying an additional force to the engine valve to keep the engine valve in a closed position. The auxiliary device is configured or controlled in such a way that the total force tending to keep the engine valve in its closed position varies during each rotation cycle of the cam. The total force is higher at least in one part of the rotation cycle of the cam wherein the engine valve must remain in its closed position, and is, instead, reduced at least in one part of the rotation cycle of the cam wherein the engine valve is not in its closed position.

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Patent Owner(s)

Patent OwnerAddress
C R F SOCIETA CONSORTILE PER AZIONI10043 ORBASSANO (TORINO)

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
De, Michele Onofrio Castellana Grotte, IT 42 175
Gargano, Marcello Torre a Mare, IT 24 74
Ricco, Raffaele Casamassima, IT 51 216
Stucchi, Sergio Valenzano, IT 47 197

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