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    Fuel Injector with Balanced Metering Servovalve, for an Internal Combustion Engine
    1.
    发明申请
    Fuel Injector with Balanced Metering Servovalve, for an Internal Combustion Engine 有权
    具有平衡计量伺服阀的燃油喷射器，用于内燃机

    公开(公告)号：US20080257989A1

    公开(公告)日：2008-10-23

    申请号：US12021531

    申请日：2008-01-29

    申请人： Mario Ricco ,  Raffaele Ricco ,  Antonio Gravina ,  Marcello Gargano ,  Sergio Stucchi ,  Onofrio De Michele

    发明人： Mario Ricco ,  Raffaele Ricco ,  Antonio Gravina ,  Marcello Gargano ,  Sergio Stucchi ,  Onofrio De Michele

    IPC分类号： F02M61/16

    CPC分类号： F02M47/027 ,  F02M63/004 ,  F02M63/007 ,  F02M63/008 ,  F02M2200/28 ,  F02M2547/003

    摘要： The injector comprises a balanced metering servovalve to control a rod for the opening/closing of a nozzle. La servovalve has a valve body with a control chamber radially delimited by a tubular portion and fitted with an outlet passage that is opened/closed by an axially movable shutter. The servovalve is also integral with an axial stem, provided with a lateral surface, through which the outlet channel exits. The shutter is coupled to the stem in an axially sliding manner and, when it closes the outlet passage, it is subjected to substantially null axial fuel pressure. The outlet passage has a calibrated segment distanced from the shutter and close to a bottom wall of the control chamber. The calibrated segment is carried by an element fixed to the valve body in correspondence to an axial segment of the outlet passage.

    摘要翻译： 喷射器包括平衡计量伺服阀，用于控制用于打开/关闭喷嘴的杆。 La伺服阀具有阀体，其具有由管状部分径向限定的控制室，并且装配有由可轴向移动的闸板打开/关闭的出口通道。 伺服阀还与轴向杆成一体，轴向杆具有侧面，出口通道通过该侧面离开。 快门以轴向滑动方式联接到杆上，并且当其关闭出口通道时，其受到基本上无效的轴向燃料压力。 出口通道具有远离闸门并靠近控制室的底壁的校准段。 校准段由与出口通道的轴向段对应的固定到阀体的元件承载。

    Fuel injector with balanced metering servovalve, for an internal combustion engine
    2.
    发明授权
    Fuel injector with balanced metering servovalve, for an internal combustion engine 有权
    燃油喷射器具有平衡计量伺服阀，用于内燃机

    公开(公告)号：US07954787B2

    公开(公告)日：2011-06-07

    申请号：US12021531

    申请日：2008-01-29

    申请人： Mario Ricco ,  Raffaele Ricco ,  Antonio Gravina ,  Marcello Gargano ,  Sergio Stucchi ,  Onofrio De Michele

    发明人： Mario Ricco ,  Raffaele Ricco ,  Antonio Gravina ,  Marcello Gargano ,  Sergio Stucchi ,  Onofrio De Michele

    IPC分类号： F16K31/02

    CPC分类号： F02M47/027 ,  F02M63/004 ,  F02M63/007 ,  F02M63/008 ,  F02M2200/28 ,  F02M2547/003

    摘要： The injector comprises a balanced metering servovalve to control a rod for the opening/closing of a nozzle. La servovalve has a valve body with a control chamber radially delimited by a tubular portion and fitted with an outlet passage that is opened/closed by an axially movable shutter. The servovalve is also integral with an axial stem, provided with a lateral surface, through which the outlet channel exits. The shutter is coupled to the stem in an axially sliding manner and, when it closes the outlet passage, it is subjected to substantially null axial fuel pressure. The outlet passage has a calibrated segment distanced from the shutter and close to a bottom wall of the control chamber. The calibrated segment is carried by an element fixed to the valve body in correspondence to an axial segment of the outlet passage.

    摘要翻译： 喷射器包括平衡计量伺服阀，用于控制用于打开/关闭喷嘴的杆。 La伺服阀具有阀体，其具有由管状部分径向限定的控制室，并且装配有由可轴向移动的快门打开/关闭的出口通道。 伺服阀还与轴向杆成一体，轴向杆具有侧面，出口通道通过该侧面离开。 快门以轴向滑动方式联接到杆上，并且当其关闭出口通道时，其受到基本上无效的轴向燃料压力。 出口通道具有远离闸门并靠近控制室的底壁的校准段。 校准段由与出口通道的轴向段对应的固定到阀体的元件承载。

    Fuel injector with high stability of operation for an internal-combustion engine
    3.
    发明授权
    Fuel injector with high stability of operation for an internal-combustion engine 有权
    内燃机操作稳定性高的燃油喷射器

    公开(公告)号：US07963270B2

    公开(公告)日：2011-06-21

    申请号：US12491345

    申请日：2009-06-25

    申请人： Mario Ricco ,  Sergio Stucchi ,  Raffaele Ricco ,  Onofrio De Michele ,  Marcello Gargano ,  Antonio Gravina

    发明人： Mario Ricco ,  Sergio Stucchi ,  Raffaele Ricco ,  Onofrio De Michele ,  Marcello Gargano ,  Antonio Gravina

    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 metering servo valve for controlling a rod for opening/closing a nebulizer. The servo valve has a valve body 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 separate from an armature of an electromagnet, and is slidable on an axial guide element for closing the outlet passage. The open/close element is held in the closing position by a spring acting through an intermediate body. The armature can be displaced with respect to the axial guide element between a flange of the intermediate body and a projection element of the guide member, for eliminating the rebounds of the open/close element upon closing of the solenoid valve.

    摘要翻译： 喷射器包括用于控制用于打开/关闭喷雾器的杆的计量伺服阀。 伺服阀具有阀体，该阀体具有控制室，该控制室具有通过可轴向移动的打开/关闭元件打开/关闭的出口通道。 打开/关闭元件与电磁体的电枢分离，并且可在轴向引导元件上滑动以闭合出口通道。 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。 电枢可以相对于中间体的凸缘与引导构件的突出元件之间的轴向引导元件移位，以在闭合电磁阀时消除打开/关闭元件的反弹。

    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 for an internal-combustion engine
    9.
    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。

    Metering servovalve and fuel injector for an internal combustion engine
    10.
    发明授权
    Metering servovalve and fuel injector for an internal combustion engine 有权
    用于内燃机的计量伺服阀和燃油喷射器

    公开(公告)号：US07954729B2

    公开(公告)日：2011-06-07

    申请号：US12023766

    申请日：2008-01-31

    申请人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Antonio Gravina ,  Chiara Altamura ,  Marcello Gargano

    发明人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Antonio Gravina ,  Chiara Altamura ,  Marcello Gargano

    IPC分类号： F02M41/16

    CPC分类号： F02M63/004 ,  F02M47/027 ,  F02M63/0015 ,  F02M63/0043 ,  F02M63/008 ,  F02M2200/16 ,  F02M2200/26 ,  F02M2547/003

    摘要： A metering servovalve for a fuel injector of an internal combustion engine has an electro-actuator and a fixed valve body, which defines a control chamber communicating with an inlet and with an outlet channel. The outlet channel has at least one calibrated restriction and exits through the lateral surface of an axial stem, on which a sleeve slides, in a substantially fluid-tight manner, to open/close the outlet channel and so vary the pressure in the control chamber. The outlet channel is closed by an end portion of the sleeve that is elastically deformable in a radially outward direction, under the thrust of the fuel pressure, to increase the diameter at which the seal against the valve body is formed, with respect to a non-deformed state, and to generate an axial unbalancing force on the sleeve upon opening when the outlet channel is closed.

    摘要翻译： 用于内燃机的燃料喷射器的计量伺服阀具有电致动器和固定阀体，其限定了与入口和出口通道连通的控制室。 出口通道具有至少一个校准的限制并且通过轴向杆的侧表面离开，套管以基本上流体密封的方式滑动在其上，以打开/关闭出口通道，从而改变控制室中的压力 。 出口通道由套筒的端部封闭，该端部可在燃料压力的推力下沿径向向外的方向弹性变形，以增加形成关于阀体的密封件的直径， 变形状态，并且当出口通道关闭时在打开时产生轴向不平衡力。