公开(公告)号：US20140158797A1

公开(公告)日：2014-06-12

申请号：US13708963

申请日：2012-12-08

申请人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Onofrio De Michele

发明人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Onofrio De Michele

IPC分类号： F02M63/00

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。

公开(公告)号：US08640675B2

公开(公告)日：2014-02-04

申请号：US12491656

申请日：2009-06-25

申请人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Onofrio De Michele

发明人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Onofrio De Michele

IPC分类号： B05B1/30 ,  F02M45/10 ,  F02M51/00 ,  B05B1/34

CPC分类号： F02M47/027 ,  F02M63/004 ,  F02M63/0042 ,  F02M63/007 ,  F02M63/008 ,  F02M2200/16 ,  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 for controlling opening/closing of a nozzle that injects fuel in an engine cylinder; the injector body houses a metering servovalve, provided with a control chamber and with an open/close element of a balanced type, axial sliding of which causes a variation in pressure in the control chamber; the metering servovalve comprises a valve body made of two pieces coaxially coupled to one another via a deformable ring, which defines also a gasket for guaranteeing fluid tightness between the two pieces and maintains in a fixed position a disk on which a calibrated restriction is made.

摘要翻译： 燃料喷射器具有喷射器主体和控制杆，该喷射器主体和控制杆可沿喷射器主体沿轴线移动，用于控制在发动机气缸中喷射燃料的喷嘴的打开/关闭; 注射器主体容纳计量伺服阀，其具有控制室和平衡型开/关元件，其轴向滑动导致控制室中的压力变化; 计量伺服阀包括由两个通过可变形环同轴联接的两个阀体构成的阀体，该可变形环还限定了用于保证两个部件之间的流体密封性的垫圈，并且在固定位置上保持在其上进行了校准限制的盘。

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。

公开(公告)号：US07784711B2

公开(公告)日：2010-08-31

申请号：US12023793

申请日：2008-01-31

申请人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Domenico Lepore ,  Carlo Mazzarella

发明人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Domenico Lepore ,  Carlo Mazzarella

IPC分类号： F02M47/00

CPC分类号： F02M47/027 ,  F02M63/004 ,  F02M63/008 ,  F02M2200/07 ,  F02M2200/9069 ,  F02M2547/003 ,  Y10S239/19

摘要： A fuel injector and servovalve for an internal combustion engine. In one embodiment, the fuel injector comprises a casing; a balanced metering servovalve in the casing that controls movement of an injection control rod along an axial cavity; said servovalve having; a valve body comprising a control chamber; an axial stem comprising a discharge channel having at least one radial segment that runs to a lateral surface of said axial stem; a calibrated inlet passage in communication with said control chamber; and an outlet passage in communication with said control chamber and the discharge channel; a sleeve having a shutter, said axial stem extending into said sleeve in a fluid tight manner and so that said sleeve that can axially slide along said axial stem between a closed position and an open position of said at least one radial segment, thereby controlling said movement of said injection control rod along said axial cavity; an electro-actuator having an armature that controls said axial sliding of said sleeve along said axial stem; an elastic member that exerts a force upon said armature that maintains said sleeve in said closed position, said electro-actuator being able to control said armature to overcome said force of said elastic member; and said armature being separate from said sleeve.

摘要翻译： 燃油喷射器和内燃机的伺服阀。 在一个实施例中，燃料喷射器包括壳体; 壳体中的平衡计量伺服阀控制注射控制杆沿轴向腔的运动; 所述伺服阀具有; 阀体，包括控制室; 轴向杆，包括具有至少一个径向段的排放通道，所述至少一个径向段延伸到所述轴向杆的侧表面; 与所述控制室连通的校准入口通道; 以及与所述控制室和所述排出通道连通的出口通道; 具有快门的套筒，所述轴向杆以流体密封的方式延伸到所述套筒中，并且使得所述套筒可沿着所述轴向轴线在所述至少一个径向段的关闭位置和打开位置之间轴向滑动，从而控制所述 所述注射控制杆沿所述轴向腔的运动; 电致动器，其具有控制所述套筒沿着所述轴杆的所述轴向滑动的电枢; 弹性构件，其将所述电枢施加力保持在所述闭合位置，所述电致动器能够控制所述电枢克服所述弹性构件的所述力; 并且所述电枢与所述套筒分离。

公开(公告)号：US07513445B2

公开(公告)日：2009-04-07

申请号：US11668637

申请日：2007-01-30

申请人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Onofrio De Michele ,  Chiara Altamura ,  Antonio Gravina ,  Carlo Mazzarella

发明人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Onofrio De Michele ,  Chiara Altamura ,  Antonio Gravina ,  Carlo Mazzarella

IPC分类号： F02M51/00

CPC分类号： F02M63/004 ,  F02M47/027 ,  F02M61/168 ,  F02M63/0043 ,  F02M63/008 ,  F02M2200/16 ,  F02M2200/28 ,  F02M2200/8053 ,  F02M2200/8076 ,  F02M2200/8092 ,  F02M2547/003

摘要： The metering servo valve comprises a valve body, an open/close element, and an electromagnet, and is housed in a shell of the injector. The electromagnet actuates a mobile armature for a travel defined by an arrest element, carried by the electromagnet, which is housed in a casing, fixed in the shell by means of a threaded ring nut. Said ring nut is screwed with a pre-set tightening torque on a thread of the shell. The casing has a resting surface designed to engage a shoulder of the shell. The surface is carried by an area of the casing designed to undergo deformation as a function of the tightening torque of the ring nut so as to enable fine adjustment of the travel of the armature.

摘要翻译： 计量伺服阀包括阀体，打开/关闭元件和电磁体，并且容纳在注射器的外壳中。 电磁铁驱动移动电枢，由由电磁体承载的止动元件所限定的行程，该电磁体通过螺纹环形螺母固定在外壳中，该壳体被容纳在壳体中。 所述环形螺母在壳的螺纹上以预定的紧固扭矩拧紧。 壳体具有设计成接合壳的肩部的搁置表面。 该表面由设计成经受变形的壳体的区域承载，作为环形螺母的紧固扭矩的函数，以便能够精细调节电枢的行程。

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。

公开(公告)号：US07793862B2

公开(公告)日：2010-09-14

申请号：US11441641

申请日：2006-05-26

申请人： Mario Ricco ,  Raffaele Ricco ,  Annunziata Satriano ,  Sergio Stucchi ,  Onofrio De Michele

发明人： Mario Ricco ,  Raffaele Ricco ,  Annunziata Satriano ,  Sergio Stucchi ,  Onofrio De Michele

IPC分类号： F02M41/16 ,  B05B1/30 ,  F16K31/02

CPC分类号： F02M47/027 ,  F02M63/0015 ,  F02M63/004 ,  F02M63/0043 ,  F02M63/007 ,  F02M63/0071 ,  F02M63/0073 ,  F02M63/008 ,  F02M2200/04 ,  F02M2200/28 ,  F02M2547/003

摘要： A servo valve (7) for fuel control is provided with an actuator (14) and a valve body (8, 28), which is set in a fixed position and has a stem (33) that extends along a longitudinal axis (3) and defines an internal passage (26); said internal passage (26) has at least two radial channels (39), which give out into an outlet through an outer lateral surface (34) of the stem (33) and have respective first portions (43) of calibrated length and cross section; said first portions (42) are followed by respective second portions of larger diameter; the servo valve (7) is provided with an open/close element (17), which is coupled to the outer lateral surface (34) of the stem (33) substantially in a fluid-tight way and is axially movable under the action of the actuator (14) for opening/closing the internal passage (26) of the stem (33); in the closing position, the open/close element (17) is subject to a zero axial resultant force by the pressure of the fuel.

摘要翻译： 用于燃料控制的伺服阀（7）设置有致动器（14）和阀体（8,28），其被设置在固定位置并且具有沿着纵向轴线（3）延伸的杆（33） 并限定内部通道（26）; 所述内部通道（26）具有至少两个径向通道（39），所述至少两个径向通道（39）通过所述杆（33）的外侧表面（34）进入出口，并具有相应的具有校准长度和横截面的第一部分（43） ; 所述第一部分（42）之后是相应的较大直径的第二部分; 伺服阀（7）设置有开/关元件（17），其基本上以流体密封的方式联接到杆（33）的外侧表面（34），并且可在轴向移动的作用下 所述致动器（14）用于打开/关闭所述杆（33）的内部通道（26）; 在关闭位置，打开/关闭元件（17）经受燃料压力的零轴向合力。

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。

公开(公告)号：US20090320802A1

公开(公告)日：2009-12-31

申请号：US12491656

申请日：2009-06-25

申请人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Onofrio De Michele

发明人： Mario Ricco ,  Raffaele Ricco ,  Sergio Stucchi ,  Onofrio De Michele

IPC分类号： F02M51/00

CPC分类号： F02M47/027 ,  F02M63/004 ,  F02M63/0042 ,  F02M63/007 ,  F02M63/008 ,  F02M2200/16 ,  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 for controlling opening/closing of a nozzle that injects fuel in an engine cylinder; the injector body houses a metering servovalve, provided with a control chamber and with an open/close element of a balanced type, axial sliding of which causes a variation in pressure in the control chamber; the metering servovalve comprises a valve body made of two pieces coaxially coupled to one another via a deformable ring, which defines also a gasket for guaranteeing fluid tightness between the two pieces and maintains in a fixed position a disk on which a calibrated restriction is made.

摘要翻译： 燃料喷射器具有喷射器主体和控制杆，该喷射器主体和控制杆可沿喷射器主体沿轴线移动，用于控制在发动机气缸中喷射燃料的喷嘴的打开/关闭; 注射器主体容纳计量伺服阀，其具有控制室和平衡型开/关元件，其轴向滑动导致控制室中的压力变化; 计量伺服阀包括由两个通过可变形环同轴联接的两个阀体构成的阀体，该可变形环还限定了用于保证两个部件之间的流体密封性的垫圈，并且在固定位置上保持在其上进行了校准限制的盘。

公开(公告)号：US20090032620A1

公开(公告)日：2009-02-05

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： F02M61/16

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 a radial 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在套筒上产生径向不平衡力。