公开(公告)号：US20060027684A1

公开(公告)日：2006-02-09

申请号：US11171659

申请日：2005-06-30

申请人： Mario Ricco ,  Sisto De Matthaeis ,  Adriano Gorgoglione ,  Alfonso Di Meo ,  Sergio Stucchi

发明人： Mario Ricco ,  Sisto De Matthaeis ,  Adriano Gorgoglione ,  Alfonso Di Meo ,  Sergio Stucchi

IPC分类号： F02M63/00 ,  F02M51/00

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

摘要： An internal combustion engine fuel injector (1) has a rod (10) movable along an axis (3) to open/close a nozzle, and a servovalve (7) having a control chamber (23) with a discharge passage (26, 48) which is opened/closed by a shutter (17) movable axially under the control of an electro-actuator; the servovalve also has a fixed axial rod (33) having an outer lateral surface (34) through which the discharge passage (26, 48) comes out; the shutter (17) is fitted to the axial rod (33) to slide axially in substantially fluidtight manner, and, when closing the discharge passage (26, 48), is subjected to substantially zero resultant axial pressure by the fuel; and a calibrated portion (42, 52) of the discharge passage (26, 48) is formed close to the outlet of the discharge passage to produce swirl and/or cavitation in the fuel outflow near to the closing area between the shutter (17) and the axial rod (33).

摘要翻译： 一种内燃机燃料喷射器（1）具有可沿轴线（3）移动以打开/关闭喷嘴的杆（10）和具有控制室（23）的伺服阀（7），该控制室具有排出通道（26,48 ），其由在电致动器的控制下可轴向移动的活门（17）打开/关闭; 所述伺服阀还具有固定的轴向杆（33），所述轴向杆具有外侧表面（34），所述排出通道（26,48）通过所述外侧表面出来; 活门17安装在轴杆33上，以基本上流体密封的方式轴向滑动，当关闭排气通道26,48时，燃料经过基本上为零的轴向压力; 并且排出通道（26,48）的校准部分（42,42）形成在排放通道的出口附近，以在靠近快门（17）之间的关闭区域的燃料流出中产生漩涡和/或空化， 和轴向杆（33）。

公开(公告)号：US20090071005A1

公开(公告)日：2009-03-19

申请号：US12271349

申请日：2008-11-14

申请人： Mario Ricco ,  Sisto Luigi De Matthaeis ,  Adriano Gorgoglione ,  Sergio Stucchi

发明人： Mario Ricco ,  Sisto Luigi De Matthaeis ,  Adriano Gorgoglione ,  Sergio Stucchi

IPC分类号： B23P17/00 ,  H02K15/00 ,  B29C45/14

CPC分类号： F02M61/168 ,  F02M47/027 ,  F02M51/005 ,  F02M63/0015 ,  F02M2200/16 ,  F02M2200/9015 ,  Y10T29/49009 ,  Y10T29/494

摘要： A fuel injector for an internal-combustion engine comprises an injector body and an injection-control valve, which in turn comprises: an open/close element; an elastic thrust element for pushing the open/close element; and a solenoid actuator, which can be actuated for exerting an action countering the thrust exerted by the elastic element. The solenoid actuator is formed by a monolithic assembly obtained in a mould, in which there is injected, on a core and a coil coupled to one another, a plastic material, which defines, once it has solidified, a body for insulation of the core from the injector body and which forms, once it has solidified, a monolithic assembly with the core and the coil.

摘要翻译： 用于内燃机的燃料喷射器包括喷射器主体和喷射控制阀，该喷射器主体和喷射控制阀又包括开/关元件; 用于推动打开/关闭元件的弹性止推元件; 以及螺线管致动器，其可被致动以发挥抵抗由弹性元件施加的推力的作用。 螺线管致动器由在模具中获得的整体组件形成，其中注入在芯体和彼此联接的线圈上，塑料材料一旦固化就限定了用于绝缘芯体的主体 一旦它已经凝固，从注射器本体形成一个具有芯和线圈的整体式组件。

公开(公告)号：US20060032950A1

公开(公告)日：2006-02-16

申请号：US11171658

申请日：2005-06-30

申请人： Mario Ricco ,  Sisto De Matthaeis ,  Adriano Gorgoglione ,  Alfonso Di Meo ,  Sergio Stucchi

发明人： Mario Ricco ,  Sisto De Matthaeis ,  Adriano Gorgoglione ,  Alfonso Di Meo ,  Sergio Stucchi

IPC分类号： F02M51/00

CPC分类号： F02M47/027 ,  F02M61/12 ,  F02M63/0015 ,  F02M63/004 ,  F02M63/0043 ,  F02M63/007 ,  F02M63/0071 ,  F02M63/0073 ,  F02M63/008 ,  F02M2200/28 ,  F02M2547/003

摘要： An internal combustion engine fuel injector (1) has a rod (10) movable along an axis (3) to open/close a nozzle, and a servovalve (7) having a control chamber (23) with a discharge passage (26) which is opened/closed by a shutter (17) movable axially under the control of an electro-actuator (14); the servovalve (7) also has a fixed axial rod (33) having an outer lateral surface (34) through which the discharge passage (26) comes out; the shutter (17) is fitted to the axial rod (33) to slide axially in substantially fluidtight manner, and, when closing the discharge passage (26), is subjected to substantially zero resultant axial pressure by the fuel; and the control chamber (23) is bounded radially by a tubular portion (8) formed in one piece with said axial rod (33).

摘要翻译： 一种内燃机燃料喷射器（1）具有可沿轴线（3）移动以打开/关闭喷嘴的杆（10）和具有带有排放通道（26）的控制室（23）的伺服阀（7） 由在电致动器（14）的控制下可轴向移动的快门（17）打开/关闭; 伺服阀（7）还具有固定的轴向杆（33），其具有外侧表面（34），排出通道（26）从该外侧表面出来; 闸板17被安装到轴杆33上，以基本上流体密封的方式轴向滑动，并且当关闭排放通道26时，由燃料施加基本上为零的轴向压力; 并且所述控制室（23）由与所述轴向杆（33）一体形成的管状部分（8）沿径向限制。

公开(公告)号：US07464912B2

公开(公告)日：2008-12-16

申请号：US11111065

申请日：2005-04-21

申请人： Mario Ricco ,  Sisto Luigi De Matthaeis ,  Adriano Gorgoglione ,  Sergio Stucchi

发明人： Mario Ricco ,  Sisto Luigi De Matthaeis ,  Adriano Gorgoglione ,  Sergio Stucchi

IPC分类号： F16K31/02

CPC分类号： F02M61/168 ,  F02M47/027 ,  F02M51/005 ,  F02M63/0015 ,  F02M2200/16 ,  F02M2200/9015 ,  Y10T29/49009 ,  Y10T29/494

摘要： A fuel injector for an internal-combustion engine comprises an injector body and an injection-control valve, which in turn comprises: an open/close element; an elastic thrust element for pushing the open/close element; and a solenoid actuator, which can be actuated for exerting an action countering the thrust exerted by the elastic element. The solenoid actuator is formed by a monolithic assembly obtained in a mould, in which there is injected, on a core and a coil coupled to one another, a plastic material, which defines, once it has solidified, a body for insulation of the core from the injector body and which forms, once it has solidified, a monolithic assembly with the core and the coil.

摘要翻译： 用于内燃机的燃料喷射器包括喷射器主体和喷射控制阀，该喷射器主体和喷射控制阀又包括开/关元件; 用于推动打开/关闭元件的弹性止推元件; 以及螺线管致动器，其可被致动以发挥抵抗由弹性元件施加的推力的作用。 螺线管致动器由在模具中获得的整体组件形成，其中注入在芯体和彼此联接的线圈上，塑料材料一旦固化就限定了用于绝缘芯体的主体 一旦它已经凝固，从注射器本体形成一个具有芯和线圈的整体式组件。

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。

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。

公开(公告)号：US20090321542A1

公开(公告)日：2009-12-31

申请号：US12491938

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： F02M51/06

CPC分类号： F02M63/004 ,  F02M47/027 ,  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 at least two 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; 排出通道具有至少两个具有校准通道部分的限制并且彼此串联布置以沿着排出通道分开压降。

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。

公开(公告)号：US20080092855A1

公开(公告)日：2008-04-24

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：US20060266846A1

公开(公告)日：2006-11-30

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： F02M47/02

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。