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    • 15. 发明授权
    • Metering servovalve and fuel injector for an internal combustion engine
    • 用于内燃机的计量伺服阀和燃油喷射器
    • US07784711B2
    • 2010-08-31
    • US12023793
    • 2008-01-31
    • Mario RiccoRaffaele RiccoSergio StucchiDomenico LeporeCarlo Mazzarella
    • Mario RiccoRaffaele RiccoSergio StucchiDomenico LeporeCarlo Mazzarella
    • F02M47/00
    • F02M47/027F02M63/004F02M63/008F02M2200/07F02M2200/9069F02M2547/003Y10S239/19
    • 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.
    • 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。
    • 16. 发明授权
    • Internal combustion engine fuel injector
    • 内燃机燃油喷射器
    • US07740187B2
    • 2010-06-22
    • US11171659
    • 2005-06-30
    • Mario RiccoSisto Luigi De MatthaeisAdriano GorgoglioneAlfonso Di MeoSergio Stucchi
    • Mario RiccoSisto Luigi De MatthaeisAdriano GorgoglioneAlfonso Di MeoSergio Stucchi
    • F02M41/16
    • F02M63/008F02M47/027F02M63/0015F02M63/004F02M63/0043F02M63/0071F02M63/0073F02M2200/28F02M2547/003
    • 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).
    • 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),所述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)。
    • 19. 发明授权
    • Electroinjector for controlling fuel injection in an internal-combustion engine
    • 用于控制内燃机燃油喷射的电喷射器
    • US07360528B2
    • 2008-04-22
    • US11452391
    • 2006-06-14
    • Mario RiccoSisto Luigi De MatthaeisAntonio GravinaSergio Stucchi
    • Mario RiccoSisto Luigi De MatthaeisAntonio GravinaSergio Stucchi
    • F02M37/04
    • F02D41/20F02D41/403F02D2041/2027
    • 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.
    • 提供一种用于控制内燃机中的燃料喷射的电喷射器。 电喷射器包括电致动器,注射喷嘴和销,其可以在打开行程和用于在电致动器的控制下打开/关闭喷嘴的关闭行程以及根据进入电喷射器的燃料的供应压力移动。 第一电命令和至少第二电命令,其彼此足够接近,以便在没有任何时间上的不连续性的情况下以运动轮廓移位销,并且使得引脚执行第一开启位移, 分别向第二开启位移提供给电致动器。 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。
    • 20. 发明申请
    • FUEL-INJECTION SYSTEM FOR AN INTERNAL-COMBUSTION ENGINE AND CORRESPONDING METHOD FOR CONTROLLING FUEL INJECTION
    • 内燃机燃油喷射系统及控制燃油喷射的相应方法
    • US20070131789A1
    • 2007-06-14
    • US11391443
    • 2006-03-29
    • Mario RiccoSisto De MatthaeisAntonio GravinaSergio Stucchi
    • Mario RiccoSisto De MatthaeisAntonio GravinaSergio Stucchi
    • F02D1/06
    • F02M47/027F02D41/20F02M45/08F02M45/12F02M63/008F02M2547/003Y10S239/90
    • 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.
    • 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。