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公开(公告)号：US07458529B2
公开(公告)日：2008-12-02
申请号：US11356638
申请日：2006-02-17
IPC分类号： F16K31/02
CPC分类号： F02M63/0015 , F02M47/027 , F02M63/0031 , F02M63/0073 , F02M63/008
摘要： The metering servovalve (7) comprises a valve body (8, 30), an open/close element (45) and an electromagnet (15), and is housed in a casing (2) of the injector (1). The electromagnet (15) actuates a mobile armature (16) for a travel defined by a polar surface (19) of the core (18) of the electromagnet (15). This latter is fixed in the casing (2) by means of a threaded ring nut (40), with the interposition of at least one deformable adjustment shim (48). The ring nut (40) is screwed with a pre-set tightening torque on a thread (46) of the casing (2) so as to bring about an elastic deformation of the adjustment shim (48) and to prevent accidental unscrewing of the ring nut (40). The adjustment shim (48) is constituted by a metal ring with a cross section having a shape chosen between L, C, S, Z, and Σ.
摘要翻译： 计量伺服阀（7）包括阀体（8,30），开/关元件（45）和电磁体（15），并且被容纳在喷射器（1）的壳体（2）中。 电磁体（15）致动用于由电磁体（15）的磁芯（18）的极性表面（19）限定的行程的移动电枢（16）。 后者通过螺纹环形螺母（40）固定在壳体（2）中，插入至少一个可变形的调节垫片（48）。 环形螺母（40）在壳体（2）的螺纹（46）上以预先设定的紧固扭矩拧紧，从而引起调节垫片（48）的弹性变形并且防止意外地旋转环 螺母（40）。 调整垫片（48）由截面为L，C，S，Z和Sigma之间的形状的金属环构成。
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42.发明授权公开(公告)号：US07219656B2
公开(公告)日：2007-05-22
申请号：US11112772
申请日：2005-04-21
IPC分类号： F02M37/04
CPC分类号： F02M63/008 , F02M47/027 , F02M63/0015 , F02M63/004 , F02M63/0043 , F02M63/0071 , F02M63/0073 , F02M2200/28 , F02M2547/003
摘要： A control servo valve (8) is housed inside the casing of an internal combustion engine fuel injector (1), and has an actuator (9), a control chamber (13) communicating with a fuel inlet (5) and with a fuel outlet passage (22), and a shutter (35) movable along an axis (3) by the actuator (9) between a closed position and an open position to close and open the outlet passage (22) respectively; the servo valve (8) also has a fixed axial rod (29) interposed between the actuator (9) and the control chamber (13); the outlet passage (22) comes out through an outer lateral surface (30) of the axial rod (29); and the shutter (35) is defined by a sleeve which slides axially on the outer lateral surface (30), and, in the closed position, closes the outlet passage (22) so as to be subjected to a zero axial resultant force by the pressure of the fuel.
摘要翻译： 控制伺服阀（8）容纳在内燃机燃料喷射器（1）的壳体内，并具有致动器（9），与燃料入口（5）连通的控制室（13）和燃料出口 通道（22）和通过致动器（9）在关闭位置和打开位置之间可沿着轴线（3）移动的快门（35），以分别关闭和打开出口通道（22）; 伺服阀（8）还具有置于致动器（9）和控制室（13）之间的固定轴杆（29）。 出口通道（22）通过轴向杆（29）的外侧表面（30）出来; 并且挡板（35）由在外侧表面（30）上轴向滑动的套筒限定，并且在关闭位置关闭出口通道（22），以便经受零轴向合力 燃料的压力。
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43.发明申请公开(公告)号：US20060000930A1
公开(公告)日：2006-01-05
申请号：US11112812
申请日：2005-04-21
IPC分类号： F02M59/00
CPC分类号： F02M47/027 , F02M63/0026 , F02M2547/003
摘要： A control servo valve (8) is housed inside the casing (2) of an internal combustion engine fuel injector (1), and has a piezoelectric actuator (40), and a control chamber (13) having a fuel outlet passage (21); the outlet passage (21) comes out inside an annular chamber (34) defined by a fixed tubular portion (25) and by a shutter (32), which engages the tubular portion (25) in substantially fluidtight manner and is slid axially by the piezoelectric actuator (40) from a closed position, in which it closes the annular chamber (34) and is subjected to a zero axial resultant force by the fuel pressure, to an open position, in which the outlet passage (21) communicates with a discharge conduit.
摘要翻译： 控制伺服阀（8）容纳在内燃机燃料喷射器（1）的壳体（2）内，并具有压电致动器（40）和具有燃料出口通路（21）的控制室（13） ; 出口通道（21）从由固定管状部分（25）和快门（32）限定的环形室（34）内部出来，活门（32）以基本上流体密封的方式与管状部分（25）接合并且通过 压电致动器（40）从关闭位置闭合，其中闭合环形室（34）并经受燃料压力的零轴向合力到打开位置，在该打开位置，出口通道（21） 排放管道。
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公开(公告)号：US4872438A
公开(公告)日：1989-10-10
申请号：US236539
申请日：1988-08-25
CPC分类号： F02M55/00 , F02M53/00 , F02M55/002 , F02B3/06 , F02D2200/0606
摘要： A fuel injection system with controlled injectors for diesel engines includes a system for regulating the temperature of the fuel, including thermostatically-controlled preheating means associated with the fuel supply circuit and electronically-controlled cooling means associated with the fuel recycling circuit.
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45.发明授权High-pressure pump with a removable on-off valve for feeding fuel to an internal combustion engine 失效具有用于向内燃机供给燃料的可拆卸开关阀的高压泵公开(公告)号：US06406278B1
公开(公告)日：2002-06-18
申请号：US09608374
申请日：2000-06-30
IPC分类号： F04B3900
CPC分类号： F02M63/0215 , F02M55/00 , F02M59/46 , F02M63/0225 , F04B49/22 , Y10T137/7559
摘要： The pump has a body including at least a fuel compression chamber and an actuating chamber enclosing the actuating members of the pump; the on-off valve is defined by an independent operating assembly insertable in fluidtight manner inside a hole in the body; the hole connects an inlet conduit to the actuating chamber and to a feed conduit of the compression chamber; the assembly of the valve has a sleeve in turn having an opening located at the fuel feed conduit and which is closed by a shutter sliding inside the sleeve; the sleeve has two seats for two seals located on opposite sides of the opening; and the feed conduit is straight, and can be formed using a drilling tool through the hole.
摘要翻译： 泵具有至少包括燃料压缩室和包围泵的致动构件的致动室的主体; 所述开关阀由独立的操作组件限定，所述独立操作组件可以在所述主体的孔内以流体密封方式插入; 该孔将入口管道连接到致动室和压缩室的进料管道; 阀的组件具有套筒，其又具有位于燃料供给导管处的开口，并且其由在套筒内滑动的闸板封闭; 套筒具有位于开口相对两侧的两个密封件的两个座位; 并且进料管是直的，并且可以使用钻孔工具通过孔形成。
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公开(公告)号：US06510843B2
公开(公告)日：2003-01-28
申请号：US09908716
申请日：2001-07-19
IPC分类号： F02M3704
CPC分类号： F02M63/0225 , F02M59/06 , F02M59/08 , F02M69/54 , F04B1/0404 , F04B49/24
摘要： The capacity of a high-pressure pump (6) is regulated by a valve system including a variable-capacity on-off valve (23) and an overpressure valve (31). The overpressure valve has a valve body (33) having a cylindrical wall (35) forming a cavity (34) in which slides a shutter (37) having a lateral wall (51) and an end wall (52). The shutter (37) is pushed into a closed position by a calibrated spring (58). The cylindrical wall (35) has first holes (44) for allowing the passage of enough fuel to lubricate the inside of the pump (6), and second holes (47) for supplying the pump (6) via a supply conduit (68) and for draining any surplus fuel into a recirculating conduit (32). The first holes (44) and the second holes (47) are opened by different displacements of the lateral wall (51) of the shutter (37); and the end wall (52) has a calibrated air vent hole (64).
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公开(公告)号：US06558142B2
公开(公告)日：2003-05-06
申请号：US09908715
申请日：2001-07-19
IPC分类号： F04B3910
CPC分类号： F02M59/06 , F02M63/0225 , F04B1/0421 , F04B53/1022
摘要： The pump (5) has at least one cylinder (6) in which slides a piston (16) moved positively in the compression direction and elastically in the intake direction. A compression spring (26) is located between the shutter (21) of an intake valve (19) and the piston (16) to push the shutter (21) elastically into a closed position by exerting elastic force varying according to the position of the piston (16). The shutter (21) has a plate (28) cooperating with a seat (22) on the intake valve (19) and moveable parallel to the piston (16); and the compression spring (26) acts on the plate (28) to advance both opening and closing of the intake valve (19).
摘要翻译： 泵（5）具有至少一个气缸（6），其中活塞（16）在压缩方向上正向移动并在进气方向上弹性地滑动。 压缩弹簧（26）位于进气门（19）的活门（21）和活塞（16）之间，以通过施加根据所述活塞（16）的位置而变化的弹性力将活门（21）弹性地推动到关闭位置 活塞（16）。 挡板（21）具有与进气阀（19）上的座（22）配合并平行于活塞（16）运动的板（28）; 并且所述压缩弹簧（26）作用在所述板（28）上以促进所述进气门（19）的打开和关闭。
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48.发明授权Device for regulating the delivery pressure of a pump, for example, for feeding fuel to an internal combustion engine 失效用于调节泵的输送压力的装置，例如用于将燃料供给到内燃机公开(公告)号：US06408824B1
公开(公告)日：2002-06-25
申请号：US09607244
申请日：2000-06-30
IPC分类号： F02M3704
CPC分类号： F02M63/0245 , F02D2041/2027 , F02M59/366 , F02M63/0015 , F02M63/004 , F02M63/0042 , F02M63/0043 , F02M63/0052 , F02M63/0225 , F04B49/24
摘要： The device includes a solenoid valve having a supply conduit communicating with the delivery of the pump, a drain conduit, an electromagnet energizable to control an armature controlling a shutter, and reducing means for reducing disturbance in the delivery pressure of the pump when the electromagnet is energized. The reducing means include a chamber having a predetermined volume and located between the supply conduit and the drain conduit; and a fixed shield having an opening in which slides a small-diameter portion of the stem of the armature. The electromagnet is controlled by an electronic unit via a modulator for modulating the duty cycle of the control pulses, and via a circuit for selecting the frequency of the control pulses on the basis of an estimate of hydraulic disturbances depending on at least one operating parameter.
摘要翻译： 该装置包括电磁阀，该电磁阀具有与泵的输送连通的供应管道，排水管道，可激励以控制控制闸门的电枢的电磁体，以及减小装置，用于减小当电磁铁是泵时泵的输送压力的干扰 通电。 所述还原装置包括具有预定体积并且位于所述供应导管和所述排水导管之间的腔室; 以及具有开口的固定屏蔽件，其中衔铁的杆的小直径部分滑动。 电磁体由电子单元经由用于调制控制脉冲的占空比的调制器控制，并且经由用于根据至少一个操作参数的液压干扰的估计来选择控制脉冲的频率的电路来控制。
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公开(公告)号：US06595238B2
公开(公告)日：2003-07-22
申请号：US09919174
申请日：2001-07-30
IPC分类号： F16K1504
CPC分类号： F04B1/0452 , F02M59/462 , F04B53/101 , Y10T137/7927
摘要： The valve (16) has a ball shutter (18) normally pushed by a helical compression spring (24) to close a delivery conduit (11) of the pump (5). A first end (28) of the spring (24) rests against a shoulder (26) of a fastening member (21) fitted in fluidtight manner to the pump (5); a second end (31) of the spring (24) acts directly on the ball (18); the fastening member (21) has a pin (33) coaxial with the conduit (11) and of such a length as to limit the travel of the ball (18) to a predetermined value; and the second end (31) of the spring (24) has at least one small-diameter turn (34) by which to engage the ball (18).
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