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    TIMING ADVANCE PISTON FOR A FUEL INJECTION PUMP
    2.
    发明授权
    TIMING ADVANCE PISTON FOR A FUEL INJECTION PUMP 有权
    喷射正时控制活塞的燃料喷射泵

    公开(公告)号：EP1218635B1

    公开(公告)日：2008-10-08

    申请号：EP00955610.1

    申请日：2000-08-16

    申请人： Stanadyne Corporation

    发明人： DUQUETTE, Mark

    IPC分类号： F02M59/30 ,  F02M57/02

    CPC分类号： F02M57/024 ,  F02M39/00 ,  F02M59/102 ,  F02M59/30

    摘要： A fuel injection pump, driven by a cam function to supply fuel to an injector for an injection event. The fuel injection pump includes a body and a pumping plunger (124) reciprocably disposed within the body and has a driven end (122). A cam follower assembly (120) is provided for engaging the cam and includes an advance piston (128) that engages the driven end (122) of the pumping plunger (124) for advancing or retarding the timing of the injection event. The advance piston (128) is movable in response to fluid pressure controlled by an advance control. A follower return spring (136) is disposed between the body and the cam follower assembly (120) and a plunger return spring (146) is mounted coaxially with the follower return spring (136) and between the body and the advance piston (128). The advance piston (128) includes a main cavity (161) and the cam follower assembly (120) includes a housing and the fuel injection pump may also include a balance spring disposed between the main cavity (161) of the advance piston (128) and the housing of the cam follower assembly.

    Fuel pump
    4.
    发明公开
    Fuel pump 审中-公开
    燃油泵

    公开(公告)号：EP1072785A3

    公开(公告)日：2002-05-08

    申请号：EP00306423.5

    申请日：2000-07-27

    申请人： Delphi Technologies, Inc.

    发明人： Williams, Anthony John

    IPC分类号： F02M45/00 ,  F02M57/02 ,  F02M59/10 ,  F02M59/30 ,  F02M45/12

    CPC分类号： F02M59/102 ,  F02M45/12 ,  F02M57/024

    摘要： A fuel pump comprising a pumping plunger (20) reciprocable within a bore (19), and a drive arrangement (25) for driving the pumping plunger (20). The drive arrangement (25) includes a compressible load transmission arrangement (29) for transmitting movement of the drive arrangement (25) to the pumping plunger (20). The load transmission arrangement (29) comprises first and second surfaces (43, 44) which define, therebetween, a chamber (37) for fluid. The fuel pump also comprises supply means (27, 35) for permitting the chamber (37) to be supplied with fluid, in use, and control means (36, 38, 39) for controlling the flow of fluid from the chamber (37).

    摘要翻译： 一种燃料泵，包括在孔（19）内往复运动的泵送活塞（20）和用于驱动泵送活塞（20）的驱动装置（25）。 驱动装置（25）包括用于将驱动装置（25）的运动传递到泵送柱塞（20）的可压缩载荷传递装置（29）。 载荷传递装置（29）包括第一和第二表面（43,44），它们之间限定了用于流体的腔室（37）。 燃料泵还包括供应装置（27,35），用于在使用中向腔室（37）供应流体，以及用于控制来自腔室（37）的流体流动的控制装置（36,38,39） 。

    HIGH PRESSURE UNIT FUEL INJECTOR WITH TIMING CHAMBER PRESSURE CONTROL VALVE
    5.
    发明授权
    HIGH PRESSURE UNIT FUEL INJECTOR WITH TIMING CHAMBER PRESSURE CONTROL VALVE 失效
    带定时室压力控制阀的高压单元燃油喷射器

    公开(公告)号：EP0548329B1

    公开(公告)日：1997-09-10

    申请号：EP92915126.4

    申请日：1992-07-10

    申请人： CUMMINS ENGINE COMPANY, INC.

    发明人： TARR, Yul, J. ,  TIKK, Laszlo

    IPC分类号： F02M59/30 ,  F02M57/02

    CPC分类号： F02M57/024 ,  F02M57/021 ,  F02M59/30 ,  F02M63/005

    摘要： A high pressure unit fuel injector (1) includes a timing chamber (26) formed between upper (13) and lower (17) plungers of the injector for controlling the timing of injection. A timing chamber relief valve (59) is provided for performing at least one of the functions of (a) draining timing fluid from the timing chamber (26) during an injection stroke responsive to pressure in the timing chamber (26) for maximizing the pressure of fuel in the injection chamber (33) under low speed operating conditions without exceeding a pressure capability of the injector under high speed operating conditions, and (b) for collapsing the timing chamber (26) in a controlled manner at termination of injection so as to prevent secondary injection from occurring. The relief valve structure (59) is wholly formed above the lower plunger (17), preferably within the upper plunger (13) above the timing chamber (26).

    摘要翻译： 高压单元燃料喷射器（1）包括在喷射器的上部（13）和下部（17）柱塞之间形成的用于控制喷射正时的正时室（26）。 提供定时腔室安全阀（59），用于执行以下功能中的至少一个：（a）响应于定时腔室（26）中的压力在注射冲程期间从定时腔室（26）排出定时流体以最大化压力 （33）中的燃料在不超过高速操作条件下的喷射器的压力能力的情况下，以及（b）在注射终止时以受控的方式压缩正时室（26），以便 以防止发生二次注射。 安全阀结构（59）整体形成在下柱塞（17）上方，优选在正时室（26）上方的上柱塞（13）内。

    Infinitely variable hydromechanical timing control
    6.
    发明公开
    Infinitely variable hydromechanical timing control 失效
    Stufenlose hydromechanische zeitliche Steuerung。

    公开(公告)号：EP0607982A1

    公开(公告)日：1994-07-27

    申请号：EP94100840.1

    申请日：1994-01-21

    申请人： CUMMINS ENGINE COMPANY, INC.

    发明人： Smith, Edward D. ,  Buchanan, David L. ,  Peters, Lester L. ,  Stroia, Bradlee J. ,  Lu, Helen F.

    IPC分类号： F02D7/00 ,  F02M59/30

    CPC分类号： F02D7/002 ,  F02D1/12 ,  F02D7/007 ,  F02M57/024

    摘要： A fuel system for fuel injectors of an internal combustion engine is provided with a hydromechanical timing valve (7) having a valve body assembly with a barrel (18) and plunger (26) arrangement. The plunger (26) is displaceable within the barrel (18) under the counterbalancing forces of rail fuel pressure (load) (3) and one or more timing valve springs (28). The relative position of the barrel (18) and plunger (26) determines the effective size of the port (22b,22c) through which timing fluid can flow. In accordance a first embodiment, the plunger (26) has a tapered head which covers and uncovers ports (22b,22c) in the barrel to a greater or lesser extent, thereby creating a variable flow-through cross section. Alternatively, in accordance with other embodiments, the barrel has ports with slot-like orifices of progressively changing widths which coact with a metering groove (34) on the spool to define a variable flow cross section through which the timing fluid must pass. Optionally, for highway motor vehicle applications, to increase fuel economy, a delayed timing advance feature can be incorporated into the timing valve. More specifically, by a controlled leakage effect, the valve plunger (26) can be caused to shift in a direction causing timing to be advanced (timing fluid supply increased) only after a predetermined period of time has elapsed. This delayed timing advance can be produced, in accordance with the invention, via a second, internal plunger, or via a second, diaphragm-operated external plunger.

    摘要翻译： 该系统包括阀芯型液压机械正时阀，其具有带有筒体和柱塞装置的阀体组件。 柱塞在轨道燃料压力（负载）和一个或多个定时阀弹簧的平衡力之下在筒内可移动。 筒和柱塞的相对位置决定了正时流体可以流过的端口的有效尺寸。 在一个实施例中，柱塞具有锥形头部，其大大或多或少地覆盖和暴露筒体中的端口，由此形成可变的流过横截面。 或者，在其他实施例中，筒具有具有逐渐变化的宽度的狭缝状孔口的端口，其与柱塞上的计量槽共同定义可变流动横截面，正时流体必须通过该横截面通过。

    KRAFTSTOFFEINSPRITZPUMPE FÜR EINE BRENNKRAFTMASCHINE
    7.
    发明授权
    KRAFTSTOFFEINSPRITZPUMPE FÜR EINE BRENNKRAFTMASCHINE 失效
    燃油喷射泵用于内燃机

    公开(公告)号：EP0302904B1

    公开(公告)日：1991-05-08

    申请号：EP88900804.1

    申请日：1988-01-25

    申请人： NOVA-WERKE AG

    发明人： FUCHS, Peter

    IPC分类号： F02M59/30 ,  F02M59/46

    CPC分类号： F02M59/30 ,  F02M59/361 ,  F02M59/46 ,  F02M2200/30

    摘要： A fuel injection pump has a housing (3) with a flange (5) and a bore (40) in which are arranged a cylinder liner (2) and a pump piston (1). A valve body (4) with an inner hollow space (20) is located in the upper part of the cylinder liner (2). The valve body (4) has at both its extremities (11, 12) a hydraulic dampening means. In the zone of the top dead centre of the pump piston (1), its head (13) cooperates directly with the lower end (11) of the valve body (4), actuating a valve seat (27). This valve seat (27) located between the valve body (4) and the cylinder liner (2) acts as a fuel intake and overflow valve for the feeding system. A pneumatic spring including the cylinder space (42) and the additional piston (44), as well as an actuating means (19), are arranged at the lower end of the pump piston (1). The actuating means (19) is linked with a driving means.

    Zweipunkt-Spritzversteller
    8.
    发明公开
    Zweipunkt-Spritzversteller 失效
    Zweipunkt-Spritzversteller。

    公开(公告)号：EP0323591A2

    公开(公告)日：1989-07-12

    申请号：EP88120941.5

    申请日：1988-12-15

    申请人： Klöckner-Humboldt-Deutz Aktiengesellschaft

    发明人： Nolte, Albert ,  Kleinschmidt, Toni

    IPC分类号： F02M59/30

    CPC分类号： F01L1/245 ,  F01L1/267 ,  F02B3/06 ,  F02D1/183 ,  F02M59/30

    摘要： Bekannte Zweipunkt-Spritzversteller, auf dem Prinzip eines steuerbaren Hydrostößels beruhend, haben den Nachteil, daß der Arbeitskolben im Hydrostößel häufig bewegt wird und deshalb verschleißt. Vorliegende Erfindung soll diesen Verschleiß vermeiden, ohne auf eine Spritzverstellung von Hub zu Hub verzichten zu müssen.
    Die Lösung der Aufgabe besteht in einem Steuerkolben (6) dessen Fortsatz (21) das Rückschlagventil (19) aufstößt, sobald der Steueröldruck in der Ölleitung (16) abfällt. Dadurch wird der Arbeitskolben 3 des Hydrostößels 1 beim nächsten Einspritzhub auf den Anschlag (24) gedrückt, wo er bis zum Ansteigen des Steueröldrucks verbleibt. Dadurch werden schnelle Reaktionen des Hydrostößels mit geringstmöglicher Bewegung des Arbeitskolbens (3) verwirklicht.
    Der erfindungsgemäße Hydrostößel eignet sich vor allem für Industriedieselmotoren mit Einzeleinspritzpumpen.

    摘要翻译： 基于可控液压挺杆原理的已知双点定时装置具有液压挺杆中的工作活塞经常移动并因此磨损的缺点。 本发明旨在防止这种磨损，而不必放弃从行程到冲程的喷射正时。 问题的解决方案是一旦油管（16）中的控制油压下降，其控制活塞（6）的延伸部（21）撞击止回阀（19）。 结果，在下一个喷射冲程中，液压挺杆（1）的工作活塞（3）被推靠在停止部分（24）上，直到控制油压力上升。 以这种方式，通过工作活塞（3）的最小可能运动实现液压挺杆的快速反应。 根据本发明的液压挺杆特别适合于具有单独的注射泵的工业柴油发动机。

    High pressure unit fuel injector
    9.
    发明公开
    High pressure unit fuel injector 失效
    Hochdruckpump-Düseneinheit。

    公开(公告)号：EP0260720A2

    公开(公告)日：1988-03-23

    申请号：EP87113749.3

    申请日：1987-09-19

    申请人： CUMMINS ENGINE COMPANY, INC.

    发明人： Perr, Julius P.

    IPC分类号： F02M59/30 ,  F02M57/02

    CPC分类号： F02M59/30 ,  F02M57/021 ,  F02M57/023 ,  F02M57/024

    摘要： A fuel injector of the open nozzle type, which is capable of achieving SAC pressures (i.e. the pressure of the fuel in the injection chamber just in front of the injector spray holes) in excess of 30,000 psi during injection. The injector assembly (11) of the preferred embodiments includes a plunger assembly (7) having three plungers (9,11,13) arranged to form a hydraulic, variable timing fluid chamber between upper (13) and intermediate (11) plungers and an injection chamber below a lower plunger (9). To prevent leakage from the injection chamber, the fuel supply passage (31) is provided, along with the injection chamber, within a one-piece injector cup (5) and a predetermined minimum seal length, at commencement of injection, between a land portion (9b) of an injection plunger (9) and a wall surface defined by a bore (6) of the injector within which it reciprocates is coordinated to the dimensions of the bore below the land and a predetermined maximum solid fuel height for the injector to result in the minimum seal length being at least one-half of the maximum solid fuel height. To obtain an increase in SAC pressures under low speed operating conditions without exceeding pressure capabilities under high speed conditions, some embodiments have valve arrangements for draining timing fluid from the timing chamber whenever the pressure of the timing fluid therein exceeds a predetermined value.

    摘要翻译： 能够在注射期间达到超过30,000psi的SAC压力（即喷射器喷射孔前方的喷射室中的燃料的压力）的开放喷嘴型燃料喷射器。 优选实施例的喷射器组件（11）包括具有三个柱塞（9,11,13）的柱塞组件（7），其布置成在上部（13）和中间（11）柱塞之间形成液压可变定时流体室， 注射室位于下部柱塞（9）下方。 为了防止从注射室泄漏，在喷射开始时，燃料供给通道（31）与注射室一起设置在单件式注射器杯（5）内和预定的最小密封长度之间， （9）的喷嘴（9b）和由喷射器的孔（6）限定的壁表面，所述喷射器在其中往复运动的孔与所述凹槽下方的孔的尺寸协调，并且将喷射器的预定最大固体燃料高度 导致最小密封长度为最大固体燃料高度的至少一半。 为了在低速操作条件下获得SAC压力的增加而在高速条件下不超过压力能力，一些实施例具有阀门装置，用于当定时流体在其中的压力超过预定值时从定时室排出定时流体。