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公开(公告)号：US09970397B2
公开(公告)日：2018-05-15
申请号：US14518626
申请日：2014-10-20
CPC分类号： F02M51/0603 , F02M61/08 , F02M61/12 , F02M63/0073 , F02M2200/703 , F02M2200/705
摘要： A fuel electro-injector for a fuel injection system for an internal combustion engine, having an atomizer equipped with a nozzle and a valve needle defining a discharge section that is annular and has a width that continuously increases as the opening stroke of the valve needle proceeds. The opening stroke is directed outwards and is caused, in a proportional manner, by the operation of an electric actuator. The electro-injector has a high-pressure environment with an annular passageway around the lateral outer surface of the valve needle to supply fuel to the discharge section, and a low-pressure environment, which communicates with a fuel outlet and is separated from the high-pressure environment by a dynamic seal between the valve needle and the nozzle. The electro-injector is provided with a hydraulic connection between the electric actuator and the valve needle, with a pressure chamber axially delimited, on one side, by the valve needle and, in use, is filled with fuel that, once compressed, axially pushes the valve needle along the opening stroke. The hydraulic connection is placed in the low-pressure environment, so that the pressure chamber only communicates with this environment.
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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：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：US09494248B2
公开(公告)日：2016-11-15
申请号：US14334881
申请日：2014-07-18
CPC分类号： F16K31/0613 , F16K1/52 , F16K11/0716 , F16K31/004 , F16K31/0655 , Y10T137/8671
摘要： 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.
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5.发明授权Internal-combustion engine, with system for variable actuation of the intake valves provided with a three-way electric valve having three levels of supply current, and method for controlling said engine 有权内燃机，具有用于可变致动的系统，其具有设有三电平供电电流的三通电动阀，以及用于控制所述发动机的方法公开(公告)号：US09127576B2
公开(公告)日：2015-09-08
申请号：US14271782
申请日：2014-05-07
发明人： Sergio Stucchi , Raffaele Ricco , Onofrio De Michele , Marcello Gargano , Mitzi Puccio , Domenico Lepore
CPC分类号： F01L13/0015 , F01L9/025 , F01L13/0005
摘要： 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.
摘要翻译： 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。
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6.发明申请FUEL ELECTRO-INJECTOR FOR A FUEL INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE 有权用于内燃机燃油喷射系统的燃油电喷射器公开(公告)号：US20150108246A1
公开(公告)日：2015-04-23
申请号：US14518626
申请日：2014-10-20
IPC分类号： F02M51/06
CPC分类号： F02M51/0603 , F02M61/08 , F02M61/12 , F02M63/0073 , F02M2200/703 , F02M2200/705
摘要： A fuel electro-injector for a fuel injection system for an internal combustion engine, having an atomizer equipped with a nozzle and a valve needle defining a discharge section that is annular and has a width that continuously increases as the opening stroke of the valve needle proceeds. The opening stroke is directed outwards and is caused, in a proportional manner, by the operation of an electric actuator. The electro-injector has a high-pressure environment with an annular passageway around the lateral outer surface of the valve needle to supply fuel to the discharge section, and a low-pressure environment, which communicates with a fuel outlet and is separated from the high-pressure environment by a dynamic seal between the valve needle and the nozzle. The electro-injector is provided with a hydraulic connection between the electric actuator and the valve needle, with a pressure chamber axially delimited, on one side, by the valve needle and, in use, is filled with fuel that, once compressed, axially pushes the valve needle along the opening stroke. The hydraulic connection is placed in the low-pressure environment, so that the pressure chamber only communicates with this environment.
摘要翻译： 一种用于内燃机的燃料喷射系统的燃料电动注射器，具有装有喷嘴的雾化器和限定排气部的阀针，所述排气部是环状的并且随着阀针的打开行程的进行而具有连续增加的宽度 。 打开行程被向外引导，并且以比例的方式通过电致动器的操作而引起。 电喷射器具有高压环境，其环形通道围绕阀针的外侧表面供应到排出部分，以及低压环境，其与燃料出口连通并与高压分离 压力环境通过阀针和喷嘴之间的动态密封。 电喷射器在电动致动器和阀针之间设置有液压连接，压力室在一侧上由阀针轴向限定，并且在使用中充满了一旦被压缩的轴向推动的燃料 阀针沿着打开行程。 液压连接被放置在低压环境中，使得压力室仅与该环境相通。
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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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8.发明授权Fuel injector equipped with a metering servovalve for an internal combustion engine 有权燃油喷射器配备有用于内燃机的计量伺服阀公开(公告)号：US09464613B2
公开(公告)日：2016-10-11
申请号：US13708963
申请日：2012-12-08
CPC分类号： F02M63/0031 , F02M47/027 , F02M63/004 , F02M63/0042 , F02M63/007 , F02M63/008 , F02M2200/16 , F02M2200/27 , F02M2200/28 , F02M2547/003
摘要： A fuel injector has an injector body and a control rod, which is movable in the injector body along an axis to control the opening/closing of a nozzle that injects fuel into a cylinder of the engine; the injector body houses a metering servovalve having a control chamber, which is axially delimited by the control rod and communicates with an inlet and with a discharge channel; the metering servovalve is provided with a shutter, which slides axially on an axial guide, from which the discharge channel exits, to open and close the discharge channel and, in consequence, vary the pressure in the control chamber; the discharge channel has three restrictions having calibrated passage sections and arranged in series with each other to divide the pressure drop along the discharge channel.
摘要翻译： 燃料喷射器具有喷射器主体和控制杆，其可以沿着轴线在喷射器主体中移动，以控制将燃料喷射到发动机气缸中的喷嘴的打开/关闭; 注射器主体容纳具有控制室的计量伺服阀，该控制室由控制杆轴向限定并与入口和排放通道连通; 计量伺服阀设有挡板，其在轴向引导件上轴向滑动，排放通道从该导向器滑出，以打开和关闭排放通道，并因此改变控制室中的压力; 排出通道具有三个限制，具有校准的通道部分并且彼此串联布置以沿着排出通道分开压降。
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9.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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