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    Internal-combustion engine having a system for variable actuation of the intake valves, provided with three-way solenoid valves
    1.
    发明授权
    Internal-combustion engine having a system for variable actuation of the intake valves, provided with three-way solenoid valves 有权
    内燃机具有用于可变地致动进气门的系统，其具有三通电磁阀

    公开(公告)号：US08844480B2

    公开(公告)日：2014-09-30

    申请号：US13591886

    申请日：2012-08-22

    申请人： Sergio Stucchi ,  Onofrio De Michele ,  Raffael Ricco ,  Marcello Gargano ,  Francesco Vattaneo ,  Domenico Lepore

    发明人： Sergio Stucchi ,  Onofrio De Michele ,  Raffael Ricco ,  Marcello Gargano ,  Francesco Vattaneo ,  Domenico Lepore

    IPC分类号： F01L9/02 ,  F01L1/34 ,  F01L1/25

    CPC分类号： F01L1/25 ,  F01L9/021 ,  F01L13/00 ,  F16K31/0624

    摘要： 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.

    摘要翻译： 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，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，以及分别与另一进气口的致动器连通的两个出口 阀门和所述排气通道。 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，而不与第二位置通信 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。

    Fuel injector with balanced metering servovalve for an internal-combustion engine
    4.
    发明授权
    Fuel injector with balanced metering servovalve for an internal-combustion engine 有权
    燃油喷射器，配有内燃机的平衡计量伺服阀

    公开(公告)号：US08037869B2

    公开(公告)日：2011-10-18

    申请号：US12491329

    申请日：2009-06-25

    申请人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Onofrio De Michele ,  Marcello Gargano ,  Domenico Lepore ,  Carlo Mazzarella

    发明人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Onofrio De Michele ,  Marcello Gargano ,  Domenico Lepore ,  Carlo Mazzarella

    IPC分类号： F02M51/00

    CPC分类号： F02M63/0024 ,  F02M47/027 ,  F02M63/0075 ,  F02M63/008 ,  F02M2200/07 ,  F02M2200/306 ,  F02M2200/9069

    摘要： The injector comprises a balanced metering servovalve for controlling a rod for opening/closing a nebulizer. The servovalve has a valve body having a control chamber provided with an outlet passage that is opened/closed by an axially mobile open/close element. The open/close element is made of a single piece with a bushing separate from an armature plate of an electromagnet. The bushing is coupled to a stem in an axially slidable way for closing an exhaust duct in communication with the outlet passage The open/close element is kept in a closed position by a spring that acts upon the bushing through an intermediate body connected thereto. The armature plate can be displaced with respect to the bushing between a flange of the intermediate body and a shoulder of the bushing, for eliminating the rebounds of the open/close element upon closing of the servovalve.

    摘要翻译： 喷射器包括用于控制用于打开/关闭雾化器的杆的平衡计量伺服阀。 伺服阀具有阀体，该阀体具有设置有通过轴向移动的开/关元件打开/关闭的出口通道的控制室。 打开/关闭元件由具有与电磁体的电枢板分开的衬套的单件制成。 衬套以可轴向滑动的方式联接到杆上，用于关闭与出口通道连通的排气管道。打开/关闭元件通过弹簧保持在关闭位置，弹簧通过连接到衬套的中间体作用在衬套上。 衔铁板可以在中间体的凸缘和套管的肩部之间相对于衬套移位，以在关闭伺服阀时消除打开/关闭元件的反弹。

    FUEL INJECTION SYSTEM WITH HIGH REPEATABILITY AND STABILITY OF OPERATION FOR AN INTERNAL-COMBUSTION ENGINE
    7.
    发明申请
    FUEL INJECTION SYSTEM WITH HIGH REPEATABILITY AND STABILITY OF OPERATION FOR AN INTERNAL-COMBUSTION ENGINE 审中-公开
    具有高重复性和内燃机运行稳定性的燃油喷射系统

    公开(公告)号：US20100162992A1

    公开(公告)日：2010-07-01

    申请号：US12493009

    申请日：2009-06-26

    申请人： Mario Ricco ,  Sergio Stucchi ,  Raffaele Ricco ,  Onofrio De Michele ,  Chiara Altamura ,  Domenico Lepore

    发明人： Mario Ricco ,  Sergio Stucchi ,  Raffaele Ricco ,  Onofrio De Michele ,  Chiara Altamura ,  Domenico Lepore

    IPC分类号： F02B3/00 ,  F02M51/00

    CPC分类号： F02M47/027 ,  F02D41/20 ,  F02D41/403 ,  F02M45/08 ,  F02M63/0024 ,  F02M63/004 ,  F02M63/007 ,  F02M63/0075 ,  F02M63/008 ,  F02M2200/306 ,  F02M2547/003

    摘要： The system comprises an injector controlled by commands of a control unit. The injector comprises a dosing servo valve having a control chamber provided with an outlet passage that is opened/closed by an open/close element that is axially movable. The open/close element is carried by an axial guide element that is separate from an anchor of an electromagnet. The open/close element is held in the closing position by a spring acting through an intermediate body. Preferably, the strokes of the open/close element and of the anchor are chosen so as to eliminate, upon closing of the solenoid valve, the rebounds of the open/close element subsequent to the first rebound. The control unit controls an injection comprising a pre-injection and a main injection, via two distinct electrical commands, which are spaced apart by a dwell time such as to occur in an area of reduced variation of the amount of injected fuel; therefore, the stability of operation of the system increases as said dwell time varies.

    摘要翻译： 该系统包括由控制单元的命令控制的喷射器。 喷射器包括配量伺服阀，其具有控制室，该控制室设置有通过可轴向移动的打开/关闭元件打开/关闭的出口通道。 开/关元件由与电磁体的锚固件分离的轴向引导元件承载。 打开/关闭元件通过作用在中间体上的弹簧保持在关闭位置。 优选地，选择打开/关闭元件和锚固件的冲程，以便在关闭电磁阀时消除在第一回弹之后的打开/关闭元件的反弹。 控制单元经由两个不同的电气命令控制包括预喷射和主喷射的喷射，其间隔开停留时间，例如发生在减少的喷射量的变化量的区域中; 因此，系统的运行稳定性随着停留时间的变化而增加。

    Fuel-injection system for an internal-combustion engine
    8.
    发明授权
    Fuel-injection system for an internal-combustion engine 有权
    内燃机燃油喷射系统

    公开(公告)号：US07380541B1

    公开(公告)日：2008-06-03

    申请号：US11619967

    申请日：2007-01-04

    申请人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Onofrio De Michele ,  Antonio Gravina ,  Domenico Lepore

    发明人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Onofrio De Michele ,  Antonio Gravina ,  Domenico Lepore

    IPC分类号： F02M37/06

    CPC分类号： F02M37/00 ,  F02M53/00 ,  F02M59/366 ,  F02M63/0001 ,  F02M63/0225 ,  F02M63/023 ,  F02M63/0265

    摘要： The injection system comprises a high-pressure pump with variable flowrate, having at least one pumping element provided with an intake valve in communication with an intake pipe and a delivery valve in communication with a delivery pipe. A pressure regulator is set on the intake pipe downstream of a metering solenoid valve designed to meter the flowrate of the pump according to the operating conditions of the engine. The pressure regulator is designed to discharge the excess fuel into a compartment of a crankcase for lubricating the usual actuation mechanism of the pumping element. Set between an inlet of the solenoid valve and an inlet of the pressure regulator is a control volume designed to contain an amount of fuel such as to guarantee an adequate flow of fuel in an area corresponding to the inlet of the solenoid valve.

    摘要翻译： 注射系统包括具有可变流量的高压泵，具有至少一个泵送元件，其具有与进气管连通的进气阀和与输送管连通的输送阀。 压力调节器设置在计量电磁阀下游的进气管上，该计量电磁阀设计成根据发动机的运行条件来计量泵的流量。 压力调节器被设计成将多余的燃料排放到曲轴箱的隔室中，用于润滑泵送元件的通常的致动机构。 设置在电磁阀的入口和压力调节器的入口之间的是控制体积，设计成容纳一定量的燃料，以保证在对应于电磁阀的入口的区域中具有足够的燃料流。

    FUEL INJECTION SYSTEM WITH HIGH REPEATABILITY AND STABILITY OF OPERATION FOR AN INTERNAL-COMBUSTION ENGINE
    9.
    发明申请
    FUEL INJECTION SYSTEM WITH HIGH REPEATABILITY AND STABILITY OF OPERATION FOR AN INTERNAL-COMBUSTION ENGINE 有权
    具有高重复性和内燃机运行稳定性的燃油喷射系统

    公开(公告)号：US20100186708A1

    公开(公告)日：2010-07-29

    申请号：US12624200

    申请日：2009-11-23

    申请人： Mario Ricco ,  Sergio Stucchi ,  Raffaele Ricco ,  Onofrio De Michele ,  Chiara Altamura ,  Domenico Lepore

    发明人： Mario Ricco ,  Sergio Stucchi ,  Raffaele Ricco ,  Onofrio De Michele ,  Chiara Altamura ,  Domenico Lepore

    IPC分类号： F02B3/00 ,  F02M51/00

    CPC分类号： F02M47/027 ,  F02D41/20 ,  F02D41/403 ,  F02M45/08 ,  F02M63/0024 ,  F02M63/004 ,  F02M63/007 ,  F02M63/0075 ,  F02M63/008 ,  F02M2200/306 ,  F02M2547/003

    摘要： The fuel injection system comprises a fuel injector controlled by commands of a control unit. The fuel injector comprises a metering servo valve having a control chamber provided with an outlet passage that is opened/closed by an open/close element that is axially movable. The open/close element is carried by an axial guide element that is separate from an armature of an electromagnet. The open/close element is held in the closing position by a spring acting through an intermediate body. In some instances, the strokes of the open/close element and of the armature are chosen so as to eliminate, upon closing of the servo valve, the rebounds of the open/close element subsequent to the first rebound. The control unit controls a fuel injection comprising a pilot fuel injection and a main fuel injection, via two distinct electrical commands, which are spaced apart by a dwell time such as to occur in an area of reduced variation of the amount of injected fuel. Therefore, the stability of operation of the fuel injection system increases as the dwell time varies.

    摘要翻译： 燃料喷射系统包括由控制单元的命令控制的燃料喷射器。 燃料喷射器包括计量伺服阀，其具有控制室，该控制室设置有通过可轴向移动的打开/关闭元件打开/关闭的出口通道。 开/关元件由与电磁体的电枢分离的轴向引导元件承载。 打开/关闭元件通过作用在中间体上的弹簧保持在关闭位置。 在某些情况下，选择打开/关闭元件和电枢的冲程，以便在关闭伺服阀时消除在第一次回弹之后的打开/关闭元件的反弹。 控制单元经由两个不同的电气指令来控制包括先导燃料喷射和主燃料喷射的燃料喷射，其间隔开停留时间，以便发生在喷射燃料量的变化量减小的区域中。 因此，燃料喷射系统的运行稳定性随着停留时间的变化而增加。

    Fuel injection system with high repeatability and stability of operation for an internal-combustion engine
    10.
    发明授权
    Fuel injection system with high repeatability and stability of operation for an internal-combustion engine 有权
    具有高内燃机重复性和稳定性的燃油喷射系统

    公开(公告)号：US09140223B2

    公开(公告)日：2015-09-22

    申请号：US12624200

    申请日：2009-11-23

    申请人： Mario Ricco ,  Sergio Stucchi ,  Raffaele Ricco ,  Onofrio De Michele ,  Chiara Altamura ,  Domenico Lepore

    发明人： Mario Ricco ,  Sergio Stucchi ,  Raffaele Ricco ,  Onofrio De Michele ,  Chiara Altamura ,  Domenico Lepore

    IPC分类号： F02M45/08 ,  F02M47/02 ,  F02M63/00 ,  F02D41/20 ,  F02D41/40

    CPC分类号： F02M47/027 ,  F02D41/20 ,  F02D41/403 ,  F02M45/08 ,  F02M63/0024 ,  F02M63/004 ,  F02M63/007 ,  F02M63/0075 ,  F02M63/008 ,  F02M2200/306 ,  F02M2547/003

    摘要： The fuel injection system comprises a fuel injector controlled by commands of a control unit. The fuel injector comprises a metering servo valve having a control chamber provided with an outlet passage that is opened/closed by an open/close element that is axially movable. The open/close element is carried by an axial guide element that is separate from an armature of an electromagnet. The open/close element is held in the closing position by a spring acting through an intermediate body. In some instances, the strokes of the open/close element and of the armature are chosen so as to eliminate, upon closing of the servo valve, the rebounds of the open/close element subsequent to the first rebound. The control unit controls a fuel injection comprising a pilot fuel injection and a main fuel injection, via two distinct electrical commands, which are spaced apart by a dwell time such as to occur in an area of reduced variation of the amount of injected fuel. Therefore, the stability of operation of the fuel injection system increases as the dwell time varies.

    摘要翻译： 燃料喷射系统包括由控制单元的命令控制的燃料喷射器。 燃料喷射器包括计量伺服阀，其具有控制室，该控制室设置有通过可轴向移动的打开/关闭元件打开/关闭的出口通道。 开/关元件由与电磁体的电枢分离的轴向引导元件承载。 打开/关闭元件通过作用在中间体上的弹簧保持在关闭位置。 在某些情况下，选择打开/关闭元件和电枢的行程，以便在关闭伺服阀时消除在第一次回弹之后的打开/关闭元件的反弹。 控制单元经由两个不同的电气指令来控制包括先导燃料喷射和主燃料喷射的燃料喷射，其间隔开停留时间，以便发生在喷射燃料量的变化量减小的区域中。 因此，燃料喷射系统的运行稳定性随着停留时间的变化而增加。