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81.发明申请公开(公告)号：US20070131789A1
公开(公告)日：2007-06-14
申请号：US11391443
申请日：2006-03-29
IPC分类号： F02D1/06
CPC分类号： F02M47/027 , F02D41/20 , F02M45/08 , F02M45/12 , F02M63/008 , F02M2547/003 , Y10S239/90
摘要： A fuel-injection system in an internal-combustion engine is provided with an electroinjector (1) comprising an injection nozzle (5), and a needle (7) mobile along an opening stroke and a closing stroke for opening/closing the nozzle (5) under the control of an electroactuator device (8). The opening stroke of the needle (7) is controlled by a rod (14) pushed by the pressure of the fuel in a control chamber (15), in such a way as to keep the needle (7) normally in the position for closing the nozzle (5). The control chamber (15) is equipped with an inlet duct (18) having a pre-set diameter (D4) and with an outlet passage (24) having a diameter (D5) and controlled by a control valve (16). The method for controlling fuel injection comprises the steps of choosing the ratio (D5/D4) of the aforesaid diameters so as to determine a certain rate of displacement of the needle (7), and issuing to the device (8) a first electrical command (C1) and a second electrical command (C2) sufficiently close to one another to displace the needle (7) with a profile of motion (P) without any discontinuities in time.
摘要翻译： 在内燃机中的燃料喷射系统设置有电喷射器（1），其包括喷射喷嘴（5）和沿打开行程移动的针（7）和用于打开/关闭喷嘴（5）的关闭行程 ）在电致动器装置（8）的控制下。 针（7）的打开行程由通过控制室（15）中的燃料压力推动的杆（14）来控制，以使针（7）保持正常的位置 喷嘴（5）。 控制室（15）装备有具有预设直径（D 4 S）的入口管道（18），并且具有直径（D <5> 5）的出口通道（24） / SUB>）并由控制阀（16）控制。 用于控制燃料喷射的方法包括以下步骤：选择上述直径的比（D 5 / D 4/4），以便确定针的一定的位移速率 （7），并且向所述设备（8）发出彼此充分接近的第一电命令（C 1> 1）和第二电命令（C SUB2＆lt; 2＆gt;）以使位移 具有运动轮廓（P）的针（7）在时间上没有任何不连续性。
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公开(公告)号：US20060231077A1
公开(公告)日：2006-10-19
申请号：US11452391
申请日：2006-06-14
CPC分类号： F02D41/20 , F02D41/403 , F02D2041/2027
摘要： An electroinjector is provided for controlling fuel injection in an internal-combustion engine. The electroinjector includes an electroactuator, an injection nozzle, and a pin, which is movable along an opening stroke and a closing stroke for opening/closing the nozzle under the control of the electroactuator and according to the supply pressure of the fuel into the electroinjector. A first electrical command and at least a second electrical command, which are sufficiently close to one another as to displace the pin with a profile of motion without any discontinuity in time, and such as to cause the pin to perform a first opening displacement and, respectively, a second opening displacement, are supplied to the electroactuator. Between one injection and the next, at least one among the following quantities is varied as a function of operating parameters of the engine: duration of at least one among the electrical commands; number of the electrical commands; and distance in time between the electrical commands.
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公开(公告)号：US20060102154A1
公开(公告)日：2006-05-18
申请号：US11109789
申请日：2005-04-20
CPC分类号： F02D41/20 , F02D41/403 , F02D2041/2027
摘要： A method is provided for controlling fuel injection in an internal-combustion engine provided with an electroinjector, including an electroactuator, an injection nozzle, and a pin, which is movable along an opening stroke and a closing stroke for opening/closing the nozzle under the control of the electroactuator and according to the supply pressure of the fuel into the electroinjector. The method supplies to the electroactuator a first electrical command and at least a second electrical command, which are sufficiently close to one another as to displace the pin with a profile of motion without any discontinuity in time, and such as to cause the pin to perform a first opening displacement and, respectively, a second opening displacement. Between one injection and the next, at least one among the following quantities is varied as a function of operating parameters of the engine: duration of at least one among the electrical commands; number of the electrical commands; and distance in time between the electrical commands.
摘要翻译： 提供了一种用于控制设置有电喷射器的内燃机中的燃料喷射的方法，所述电喷射器包括可沿打开行程运动的电致动器，喷嘴和销，以及用于打开/关闭喷嘴下方的喷嘴的关闭行程 电动执行器的控制和根据燃料进入电喷射器的供应压力。 该方法向电致动器提供第一电命令和至少第二电命令，其彼此足够接近以使运动轮廓移动而没有任何时间上的不连续性，并且使得引脚执行 第一开口位移和第二开口位移。 在一次注射和下一次注射之间，以下量中的至少一个随着发动机的操作参数而变化：电气命令中的至少一个的持续时间; 电气指令数量; 和电气指令之间的时间距离。
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84.发明授权公开(公告)号：US07793862B2
公开(公告)日：2010-09-14
申请号：US11441641
申请日：2006-05-26
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。
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85.发明授权公开(公告)号：US07779815B2
公开(公告)日：2010-08-24
申请号：US12022078
申请日：2008-01-29
CPC分类号： F02M63/0225 , F02D41/3845 , F02D2250/04 , F02M59/06 , F02M59/102 , F02M59/205 , F02M59/366
摘要： An injection system includes a high-pressure pump with at least one pumping element operated in a reciprocating manner by corresponding intake and discharge strokes. Each pumping element is equipped with a corresponding intake valve in communication with an intake line, fed by a low-pressure pump. An on-off solenoid valve is positioned on the intake line of the pump and is controlled by a control unit with a frequency equal to a whole multiple or submultiple of that of the pumping action, multiplied by a factor different from 1 and/or between 0.90 and 1.10, inclusive.
摘要翻译： 喷射系统包括具有至少一个泵送元件的高压泵，该泵送元件通过相应的进气和排出冲程以往复运动方式操作。 每个泵送元件配备有与进气管路连通的相应进气阀，由进气管线供给，由低压泵供给。 一个开关电磁阀位于泵的进气管线上，并由一个控制单元控制，该控制单元的频率等于泵送动作的整数倍或更小的倍数乘以不同于1和/或/ 0.90和1.10（含）。
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86.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
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。
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87.发明申请公开(公告)号：US20090320802A1
公开(公告)日：2009-12-31
申请号：US12491656
申请日：2009-06-25
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。
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88.发明申请公开(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。
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89.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。
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公开(公告)号：US06619617B2
公开(公告)日：2003-09-16
申请号：US09725941
申请日：2000-11-30
申请人： Mario Ricco , Antonio Gravina , Sergio Stucchi
发明人： Mario Ricco , Antonio Gravina , Sergio Stucchi
IPC分类号： F02M4702
CPC分类号： F02M61/168 , F02M47/027 , F02M63/0021 , F02M63/0022 , F02M63/0075 , F02M63/022 , F02M2200/9069 , F02M2547/003
摘要： The metering valve has a shutter for a discharge conduit, and an electromagnet for controlling an armature disconnected from a relative stem and sliding along the stem by means of a sleeve. The armature is secured to the stem by a shoulder of the armature cooperating with a C-shaped ring fitted to the stem. A plate is interposed between the sleeve of the armature and a ring nut to reduce the overtravel of the armature, is locked transversely by a support of the electromagnet, and is kept resting on the ring nut by a compression spring. To secure the armature to the stem, the plate has an opening which is ineffective in reducing overtravel when the plate is moved transversely with respect to the armature.
摘要翻译： 计量阀具有用于排放管道的闸门，以及电磁铁，用于控制从相对杆断开并且通过套筒沿杆杆滑动的电枢。 电枢通过与安装在杆上的C形环配合的电枢的肩部固定到杆上。 在电枢的套筒和环形螺母之间插入板，以减小电枢的超程，由电磁体的支撑件横向锁定，并通过压缩弹簧保持在环形螺母上。 为了将衔铁固定到杆上，板具有开口，当板相对于电枢横向移动时，该开口不能减少超程。
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