公开(公告)号：US20210164368A1

公开(公告)日：2021-06-03

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: F01L9/04 ,  F01L1/46 ,  F01L1/047 ,  F01L1/14 ,  F02D13/02 ,  F02B23/10

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：US20150034193A1

公开(公告)日：2015-02-05

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 ,  F16K31/00 ,  F16K11/07

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.

Abstract translation: 电动阀包括第一工作方式和第二工作方式以及提升阀，其构造成用于在第一工作方式和第二工作方式之间液压地在阀座组上提供密封。 提升阀包括第一操作位置，第二操作位置和第三操作位置，并且可由电致动装置移动。 在第一操作位置，限定在所述阀座和所述提升阀之间的用于液压流体的通道区域具有最大值。 在第二操作位置，通道区域是偏向的并且具有低于所述最大值的值。 在第三操作位置，提升阀与阀座接触，并且通道区域具有基本上为零的值，使得第一工作方式与第二工作方式隔离。

公开(公告)号：US20140331948A1

公开(公告)日：2014-11-13

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 PICCIO ,  Domenico LEPORE

IPC: 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。 控制阀具有供电的电动执行器，只有三个不同的电流值才能使阀门进入三个位置。

公开(公告)号：US20140033997A1

公开(公告)日：2014-02-06

申请号：US13891520

申请日：2013-05-10

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

Inventor： Sergio STUCCHI ,  Onofrio DE MICHELE ,  Raffaele RICCO ,  Marcello GARGANO ,  Francesco VATTANEO ,  Domenico LEPORE

IPC: F02D43/04

CPC classification number: F02D43/04 ,  F01L1/267 ,  F01L9/025

Abstract: An internal-combustion engine with two intake valves for each cylinder is provided with a system for variable actuation of the intake valves, including a single solenoid valve for each cylinder that controls communication of a pressurized-fluid chamber of the system with an exhaust channel. The solenoid valve is a three-way, three-position solenoid valve, including 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 the 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 aforementioned 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.

Abstract translation: 具有用于每个气缸的两个进气阀的内燃机设置有用于可变地致动进气门的系统，包括用于每个气缸的单个电磁阀，其控制系统的加压流体室与排气通道的连通。 电磁阀是三通三位电磁阀，其包括与加压流体室永久连通的入口和进气阀的液压致动器，以及分别与另一个进气口的致动器连通的两个出口 阀门和排气通道。 电磁阀具有第一位置，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阀的致动器的上述出口连通，而不是与 出口连接到排气通道，第三位置，其中入口不与两个出口中的任何一个连通。

公开(公告)号：US20170175592A1

公开(公告)日：2017-06-22

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: F01L1/24 ,  F16H25/14 ,  F16H25/10 ,  F01L1/047 ,  F01L1/46

CPC classification number: F01L1/24 ,  F01L1/047 ,  F01L1/462 ,  F01L9/023 ,  F01L9/025 ,  F01L2001/2444 ,  F01L2800/19 ,  F16H25/10 ,  F16H25/14

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：US20140346258A1

公开(公告)日：2014-11-27

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: F16K11/044 ,  F16K31/06 ,  F02M61/04 ,  F16K31/00

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.

Abstract translation: 电动控制阀具有三个口和三个操作位置，其中三个口包括用于工作流体入口的第一口，以及用于工作流体出口的第二口和第三口。 三个操作位置包括第一操作位置，在该第一操作位置中，流体从第一口到第二口和第三口能够通过;第二操作位置，其中流体从第一口到所述第二口中的一个通过 并且第三口被启用，并且第三操作位置，其中流体从第一口到第二口和第三口的通过被禁用。 控制阀包括电动或电磁致动器，用于控制流体从第一口到达第二和第三口的通道，从而提供上述三个操作位置。