公开(公告)号：US10151221B2

公开(公告)日：2018-12-11

申请号：US15366727

申请日：2016-12-01

Applicant: C.R.F. Societa Consortile per Azioni

Inventor： Sergio Stucchi ,  Raffaele Ricco ,  Marcello Gargano ,  Onofrio De Michele ,  Chiara Altamura ,  Domenico Lepore

IPC: F01L1/34 ,  F01L1/24 ,  F01L1/047 ,  F01L1/46 ,  F16H25/10 ,  F16H25/14 ,  F01L9/02

Abstract: A system for variable actuation of an engine valve of an engine includes a master piston driven by a cam of a camshaft. A slave piston is driven by the master piston by a volume of pressurized fluid. The slave piston causes the engine valve to open, against the action of a spring. A control valve controls a communication between pressurized fluid and an environment at lower pressure, with which a fluid accumulator is in communication. A control unit is programmed for controlling the control valve according to one or more different valve modes. When one of these valve modes is actuated, the control valve opens the communication in advance with respect to the end of the lift cycle of the cam, and not after closing of the engine valve to prevent or reduce a decrease in pressure in the volume of pressurized fluid after closing of the engine valve.

公开(公告)号：US11466598B2

公开(公告)日：2022-10-11

申请号：US17108188

申请日：2020-12-01

Applicant: C.R.F. SOCIETA CONSORTILE PER AZIONI

Inventor： Raffaele Ricco ,  Sergio Stucchi ,  Marcello Gargano ,  Domenico Lepore ,  Chiara Altamura

IPC: F01L9/20 ,  F01L1/047 ,  F01L1/14 ,  F01L1/46 ,  F02B23/10 ,  F02D13/02

Abstract: In an internal combustion engine provided with an electro-hydraulic system for variable actuation of the intake valves of the engine, each cylinder has two intake valves, which are associated with two intake conduits and are controlled by a single cam of a camshaft through a single hydraulic circuit. The communication of the hydraulic actuators of the two intake valves with a discharge channel is controlled by two electrically-actuated control valves, both of an on/off two-position type, arranged in series with each other along a hydraulic line for communication between the a pressure volume and the discharge channel.

公开(公告)号：US09494248B2

公开(公告)日：2016-11-15

申请号：US14334881

申请日：2014-07-18

Applicant: C.R.F. Societa Consortile per Azioni

Inventor： Sergio Stucchi ,  Raffaele Ricco ,  Onofrio De Michele ,  Marcello Gargano ,  Domenico Lepore

IPC: F16K31/06 ,  F16K11/07 ,  F16K31/00 ,  F16K1/52

CPC classification number: F16K31/0613 ,  F16K1/52 ,  F16K11/0716 ,  F16K31/004 ,  F16K31/0655 ,  Y10T137/8671

Abstract: An electrically actuated valve includes a first working way and a second working way and a poppet configured for providing a seal on a valve seat set hydraulically between the first working way and the second working way. The poppet includes a first operating position, a second operating position, and a third operating position, and is displaceable by an electrical-actuation device In the first operating position, a passage area for a hydraulic fluid defined between said valve seat and said poppet has a maximum value In the second operating position, the passage area is partialized and has a value lower than said maximum value In the third operating position, the poppet is in contact with the valve seat, and the passage area has a substantially zero value, so that the first working way is isolated from the second working way.

公开(公告)号：US09127576B2

公开(公告)日：2015-09-08

申请号：US14271782

申请日：2014-05-07

Applicant: C.R.F. Societa Consortile per Azioni

Inventor： Sergio Stucchi ,  Raffaele Ricco ,  Onofrio De Michele ,  Marcello Gargano ,  Mitzi Puccio ,  Domenico Lepore

IPC: F01L9/02 ,  F01L13/00

CPC classification number: F01L13/0015 ,  F01L9/025 ,  F01L13/0005

Abstract: An internal-combustion engine includes a three-way, three-position control valve with an inlet communicating with a pressurized-fluid chamber and with a 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 control 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 outlet connected to the actuator of an intake valve and does not communicate, with the outlet connected to the exhaust channel, and a third position, in which the inlet does not communicate with the two outlets. The control valve has an electric actuator supplied only at three different values of electric current to bring the valve into the three positions.

Abstract translation: 内燃机包括三通三位控制阀，其具有与加压流体室连通的入口以及进气阀的液压致动器，以及两个出口，分别与另一进气口的致动器连通 阀门和所述排气通道。 控制阀具有第一位置，其中入口与两个出口连通，第二位置，其中入口仅与连接到进气门的致动器的出口连通并且不连通，出口连接到 排气通道和第三位置，其中入口不与两个出口连通。 控制阀具有仅在三个不同电流值下提供的电致动器，以使阀进入三个位置。

公开(公告)号：US09791055B2

公开(公告)日：2017-10-17

申请号：US14285220

申请日：2014-05-22

Applicant: C.R.F. Societa Consortile per Azioni

Inventor： Sergio Stucchi ,  Raffaele Ricco ,  Onofrio De Michele ,  Marcello Gargano ,  Domenico Lepore ,  Chiara Altamura

IPC: F02M51/00 ,  F16K11/044 ,  F16K11/10 ,  F16K31/00 ,  F16K31/06 ,  F02M61/04 ,  F02M63/00 ,  F02M47/04

CPC classification number: F16K11/044 ,  F02M47/043 ,  F02M47/046 ,  F02M61/04 ,  F02M63/0007 ,  F02M63/0026 ,  F02M63/0045 ,  F02M63/0049 ,  F02M2200/21 ,  F16K11/10 ,  F16K31/007 ,  F16K31/008 ,  F16K31/061 ,  F16K31/0624 ,  Y10T137/86919

Abstract: An electrically actuated control valve has three mouths and three operating positions, in which the three mouths includes a first mouth for inlet of a working fluid, and a second mouth and a third mouth for outlet of the working fluid. The three operating positions include a first operating position in which a passage of fluid from the first mouth to the second mouth and the third mouth is enabled, a second operating position in which a passage of fluid from the first mouth to only one of said second and third mouths is enabled, and a third operating position in which the passage of fluid from the first to the second mouth and the third mouth is disabled. The control valve includes an electric or electromagnetic actuator for controlling the passage of fluid from the first mouth to the second and third mouths providing the aforesaid three operating positions.