Internal-combustion engine having a system for variable actuation of the intake valves, provided with three-way solenoid valves

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United States of America Patent

PATENT NO 8844480
APP PUB NO 20130133596A1
SERIAL NO

13591886

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Abstract

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An internal-combustion engine with two intake valves for each cylinder is provided with a system for variable actuation of the intake valves, comprising a single solenoid valve for each cylinder that controls communication of the pressurized-fluid chamber of the system with an exhaust channel. The solenoid valve is a three-way, three-position solenoid valve, comprising an inlet permanently communicating with the pressurized-fluid chamber and with the hydraulic actuator of an intake valve, and two outlets communicating, respectively, with the actuator of the other intake valve and with said exhaust channel. The solenoid valve has a first position, in which the inlet communicates with both of the outlets, a second position, in which the inlet communicates only with the aforesaid outlet connected to the actuator of an intake valve and does not communicate, instead, with the outlet connected to the exhaust channel, and a third position, in which the inlet does not communicate with any of the two outlets.

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Patent Owner(s)

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

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
De, Michele Onofrio Orbassano, IT 42 175
Gargano, Marcello Orbassano, IT 24 74
Lepore, Domenico Orbassano, IT 19 77
Ricco, Raffael Orbassano, IT 1 6
Stucchi, Sergio Orbassano, IT 47 197
Vattaneo, Francesco Orbassano, IT 34 222

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