公开(公告)号：WO2008066818A1

公开(公告)日：2008-06-05

申请号：PCT/US2007/024461

申请日：2007-11-28

Applicant: CATERPILLAR INC. ,  YE, Jian ,  LI, Zhenyu

Inventor： YE, Jian ,  LI, Zhenyu

IPC: F15B11/042

CPC classification number: F15B11/042 ,  F02M59/205 ,  F02M59/34 ,  F02M59/366 ,  F02M63/0017 ,  F02M63/004 ,  Y10T137/86027

Abstract: A fluid-transfer system (72) includes a pump (76), a valve member (14) for metering fluid pumped by the pump, and controls (78) that regulate the position of the valve member. The controls may include an electric actuator (52) operable to generate movement of the valve member in a first direction (50) using activation current. The controls may also include one or more springs (56) that provide resistance force that urges the valve member in a second direction (62), opposite the first direction. A spring rate of the resistance force may vary as a function of the position of the valve member in such a manner that a relationship between a flow rate of the fluid pumped through the pump and the activation current is more linear than a relationship between a position of the valve member and the activation current.

Abstract translation: 流体输送系统（72）包括泵（76），用于计量由泵泵送的流体的阀构件（14），以及调节阀构件位置的控制器（78）。 控制器可以包括电致动器（52），其可操作以使用激活电流在第一方向（50）上产生阀构件的运动。 控制器还可以包括一个或多个弹簧（56），该弹簧提供抵抗第一方向的第二方向（62）上的阀构件的阻力。 阻力的弹簧刚度可以根据阀构件的位置的函数而变化，使得通过泵泵送的流体的流量与激活电流之间的关系比位置 的阀构件和激活电流。

公开(公告)号：WO2018132643A1

公开(公告)日：2018-07-19

申请号：PCT/US2018/013458

申请日：2018-01-12

Applicant: CATERPILLAR INC.

Inventor： CAMPION, Robert ,  JOSEPH, George, Kodikulam ,  PILLARISETTI, Satya, Naga Deepak ,  LI, Zhenyu

IPC: F02M53/04 ,  F02M61/14

CPC classification number: F02M53/043 ,  F02M55/004 ,  F02M55/008 ,  F02M55/025 ,  F02M57/023 ,  F02M61/14

Abstract: A fuel injector assembly (30) for an engine system (10) includes a fuel pressurization mechanism (40), a fuel injector (32), and a flow-directing sleeve (80) positioned about the fuel injector (32) and including sealing surfaces (92, 94) for sealing with a cylinder head (16) and with an injector body (50). Slots (98, 102) are formed at least in part in the sealing surfaces (92, 94) to direct fuel from a first fuel passage (26) in the cylinder head (16) into an incoming cooling passage (58) extending to the fuel pressurization mechanism (40), and from an outgoing cooling passage (60) into a second fuel passage (28) in the cylinder head (16).

公开(公告)号：WO2013070579A1

公开(公告)日：2013-05-16

申请号：PCT/US2012/063667

申请日：2012-11-06

Applicant: CATERPILLAR INC.

Inventor： MAHMOOD, Sana ,  LI, Zhenyu ,  HERR, Michael, Curtis ,  HEFLER, Gregory, William ,  WILLIAMS, Linda, Angharad

IPC: F02M61/10 ,  F02M51/06 ,  F02M61/18

CPC classification number: F02M47/027 ,  F02M55/008 ,  F02M2200/28

Abstract: A common rail fuel injector (10) includes a needle valve member (30) that moves to open and close nozzle outlets (45) for a fuel injection event responsive to pressure in a needle control chamber (52). Between injection events, the needle control chamber (52) is fluidly connected to the fuel inlet (44) by a first pathway (61) that includes a Z orifice (66), and fluidly connected to the fuel inlet (44) by a second pathway (62) that includes an F orifice 68, an intermediate chamber (54) and an A orifice (67). During an injection event, the needle control chamber (52) is fluidly connected to a drain outlet (46) by a third pathway (63) that includes the A orifice (67), the intermediate chamber (54) an E orifice (69) and a buffer chamber (55), which may assist in avoiding cavitation erosion in a sensitive area associated with a flat control valve seat (23). Different performance characteristics are achieved by adjusting the sizes of the respective of F, A, Z and E orifices (68, 67, 66, 69).

Abstract translation: 共轨燃料喷射器（10）包括针阀构件（30），其针对针控制室（52）中的压力而移动以打开和关闭用于燃料喷射事件的喷嘴出口（45）。 在注射事件之间，针控制室52通过包括Z孔口66的第一路径61流体连接到燃料入口44，并且通过第二路径流体连接到燃料入口44。 通道（62），其包括F孔口68，中间室（54）和A孔口（67）。 在注射事件期间，针控制室（52）通过包括A孔（67），中间室（54），E孔（69）的第三路径（63）流体地连接到排水口（46） 和缓冲室（55），其可有助于避免在与平坦控制阀座（23）相关联的敏感区域中的空化侵蚀。 通过调整F，A，Z和E各自的尺寸（68,67,66,69）来实现不同的性能特征。

公开(公告)号：WO2011153119A2

公开(公告)日：2011-12-08

申请号：PCT/US2011/038488

申请日：2011-05-31

Applicant: CATERPILLAR INC. ,  SHAFER, Scott, F. ,  LI, Zhenyu ,  IBRAHIM, Daniel, R. ,  TOWER, Benjamin, R. ,  ADAMS, Kenneth, C ,  GERSTNER, Michael, D.

Inventor： SHAFER, Scott, F. ,  LI, Zhenyu ,  IBRAHIM, Daniel, R. ,  TOWER, Benjamin, R. ,  ADAMS, Kenneth, C ,  GERSTNER, Michael, D.

IPC: F02M55/02 ,  F02M61/16 ,  F02M59/44

CPC classification number: F02M55/02 ,  F02M63/005

Abstract: A common rail fuel system (10, 110) includes a reverse flow check valve (60, 160) fluidly positioned between each of a plurality of common rail fuel injectors (40) and an outlet (22, 154) of a high pressure pump (20). The reverse flow check valves (60, 160) divide the overall system fluid volume (80) into an upstream common volume (82) and a plurality of separate downstream volumes (83). The upstream common volume (82) is greater than the sum of the separate downstream volumes (83). The reverse flow check valve (60, 160) is movable between a first configuration with a large flow area (68, 168) and a second configuration with a small flow area (69, 169). The reverse flow check valve (60, 160) associated with each of the individual fuel injectors may be housed in a quill (50) that fluidly connects the fuel injectors to the high pressure common rail (30, 130).

Abstract translation: 共轨燃料系统（10,110）包括流体地定位在多个共轨燃料喷射器（40）中的每一个和高压泵的出口（22,154）之间的逆流止回阀（60,160） 20）。 逆流止回阀（60,160）将整个系统流体体积（80）划分成上游公共容积（82）和多个单独的下游容积（83）。 上游公共容积（82）大于分开的下游容积（83）的总和。 逆流止回阀（60,160）可在具有大流量区域（68,168）的第一配置和具有小流动面积（69,169）的第二配置之间移动。 与每个单独的燃料喷射器相关联的逆流止回阀（60,160）可以容纳在将燃料喷射器流体连接到高压共轨（30,130）的套筒（50）中。

公开(公告)号：WO2011109325A2

公开(公告)日：2011-09-09

申请号：PCT/US2011/026578

申请日：2011-03-01

Applicant: CATERPILLAR INC. ,  LI, Zhenyu ,  SHAFER, Scott, F.

Inventor： LI, Zhenyu ,  SHAFER, Scott, F.

CPC classification number: F02M63/0285

Abstract: A pump and rail assembly (54) includes a plurality of quills (84) that are compressed between quill seats (108, 109) on a pump (75) and an output rail (76). A rail pressure control valve (77) and a rail pressure sensor (79) are attached to respective ends of the output rail (76). An inlet throttle valve (95) is attached to a housing (100) of the pump and rail assembly (54). Depending upon the application, the output rail (76) may supply fuel to a first injection bank (70) that includes a plurality of fuel injectors (72) in a first common rail (49, 50), and a second fuel injection bank that includes a second common rail (52, 53) and a plurality of fuel injectors (72). Different engines having different numbers of cylinders (11, 16, 21, 26, 27, 33, 35, 41, 43, 48, 51, 57, 60) may use similar pump and rail assemblies that each include a plurality of quills (84), a plurality of pumping elements (94) positioned in a pump housing (100) and an output rail (76). The quills (84) for each of the different engine applications are interchangeable but differ in number. In addition, the pumping elements (94) of each of the different engine applications are also interchangeable but differ in number.

Abstract translation: 泵和轨道组件（54）包括在泵（75）和输出轨道（76）之间的套筒座（108,109）之间被压缩的多个套筒（84）。 轨道压力控制阀（77）和轨道压力传感器（79）安装在输出轨道（76）的相应末端。 入口节流阀（95）附接到泵和轨道组件（54）的壳体（100）。 根据应用，输出轨道（76）可以向包括在第一共轨（49,50）中的多个燃料喷射器（72）的第一注入组（70）供应燃料，以及第二燃料喷射组 包括第二共轨（52,53）和多个燃料喷射器（72）。 具有不同数量的气缸（11,16,21,26,27,33,35,41,43,48,51,57,60）的不同发动机可以使用类似的泵和轨道组件，其各自包括多个套筒（84 ），定位在泵壳体（100）中的多个泵送元件（94）和输出轨道（76）。 用于每个不同发动机应用的套筒（84）是可互换的，但数量不同。 此外，每个不同发动机应用的泵送元件（94）也是可互换的，但数量不同。