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公开(公告)号：US11466598B2
公开(公告)日：2022-10-11
申请号：US17108188
申请日：2020-12-01
摘要： 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.
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公开(公告)号：US10151221B2
公开(公告)日：2018-12-11
申请号：US15366727
申请日：2016-12-01
发明人： Sergio Stucchi , Raffaele Ricco , Marcello Gargano , Onofrio De Michele , Chiara Altamura , Domenico Lepore
摘要： 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.
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公开(公告)号：US09791055B2
公开(公告)日：2017-10-17
申请号：US14285220
申请日：2014-05-22
发明人： Sergio Stucchi , Raffaele Ricco , Onofrio De Michele , Marcello Gargano , Domenico Lepore , Chiara Altamura
IPC分类号： F02M51/00 , F16K11/044 , F16K11/10 , F16K31/00 , F16K31/06 , F02M61/04 , F02M63/00 , F02M47/04
CPC分类号： 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
摘要： 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.
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4.发明授权Internal-combustion engine having a system for variable actuation of the intake values, provided with three-way solenoid valves, and method for controlling said engine in “single-lift” mode 有权具有用于可变地致动进气阀的系统的内燃机，具有三通电磁阀，以及用于以“单升”模式控制所述发动机的方法公开(公告)号：US09441509B2
公开(公告)日：2016-09-13
申请号：US14259189
申请日：2014-04-23
发明人： Sergio Stucchi , Raffaele Ricco , Onofrio De Michele , Marcello Gargano , Chiara Altamura , Carlo Mazzarella
CPC分类号： F01L13/0015 , F01L9/025 , F01L13/0005 , F01L2001/3443 , F01L2800/05
摘要： An internal-combustion engine includes a three-way, three-position solenoid valve, having an inlet communicating with a pressurized-fluid chamber and with a hydraulic actuator of an intake valve, and two outlets communicating with an actuator of another intake valve of a cylinder and the exhaust channel. The solenoid valve has a first position, in which the inlet communicates with both outlets, a second position, in which the inlet communicates only with the outlet connected to the actuator of the intake valve and a third position, in which the inlet does not communicate with any of the two outlets. During at least part of an active stroke of a tappet, the solenoid valve is kept in the third position to render the first intake valve active. During the active stroke of the tappet, the solenoid valve is never brought into the second position so that the second intake valve always remains closed.
摘要翻译： 内燃机包括三通三位置电磁阀，其具有与加压流体室连通的入口和与进气阀的液压致动器连接的两个出口，以及与另一个进气阀的致动器连通的两个出口 气缸和排气通道。 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门的致动器的出口连通，并且第三位置，入口不连通 与任何两个出口。 在挺杆的主动行程的至少一部分期间，电磁阀保持在第三位置以使第一进气阀起作用。 在挺杆的主动行程期间，电磁阀不会进入第二位置，使得第二进气门总是保持关闭。
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公开(公告)号：US09416691B2
公开(公告)日：2016-08-16
申请号：US14334955
申请日：2014-07-18
发明人： Sergio Stucchi , Raffaele Ricco , Onofrio De Michele , Marcello Gargano , Carlo Mazzarella , Chiara Altamura
CPC分类号： F01L13/0031 , F01L1/14 , F01L9/025 , F01L2001/3443 , F16K31/0655
摘要： An internal-combustion engine includes a system for variable actuation of intake valves, including a control valve for each cylinder, which controls communication of a pressurized-fluid chamber with a discharge channel. The control valve has at least three different positions, namely, a first completely open position, a second partially open position, and a third completely closed position. Electronic control means are programmed for keeping the control valve in its closed position in operating stages in which the intake valve must remain coupled to the respective cam and for bringing the control valve from its completely closed position to its partially open position or to its completely open position in operating stages in which the intake valve must be uncoupled from the respective cam, selection between the first position and said second position of the control valve being made as a function of one or more operating parameters of the engine.
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