公开(公告)号：WO2008108953A1

公开(公告)日：2008-09-12

申请号：PCT/US2008/002572

申请日：2008-02-27

Applicant: CATERPILLAR INC. ,  MUELLER, Jeffrey, J. ,  YACOUB, Victor, I. ,  LEWIS, Stephen, R. ,  COLDREN, Dana, R.

Inventor： MUELLER, Jeffrey, J. ,  YACOUB, Victor, I. ,  LEWIS, Stephen, R. ,  COLDREN, Dana, R.

IPC: F02M57/02 ,  F02M59/36 ,  F02M63/00 ,  F02M61/16 ,  F02M65/00

CPC classification number: F02M57/023 ,  F02M59/366 ,  F02M61/168 ,  F02M63/0015 ,  F02M63/0031 ,  F02M65/00 ,  F02M2200/04 ,  F02M2200/80 ,  F02M2200/8076

Abstract: A mechanically actuated electronically controlled unit injector includes an electronically controlled spill valve (22) to precisely control timing of fuel pressurization within a fuel pressurization chamber (17). Cavitation bubbles may be generated in the region of the valve seat when the spill valve member (25, 125) is closed to raise fuel pressure in the fuel injector. This cavitation can cause erosion on the spill valve member (25, 125) and the surrounding injector body (11). In order to preempt cavitation damage, the valve member (25, 125) may be modified to include a compound annulus (26) that includes a small annulus (45) that corresponds to an identified cavitation damage pattern. Although the generation of cavitation bubbles may continue after such a strategy, cavitation erosion, and the associated liberation of metallic particles into the fuel system can be reduced, and maybe eliminated, by the preemptive cavitation reduction strategy.

Abstract translation: 机械致动的电子控制单元喷射器包括电子控制的溢流阀（22），以精确地控制燃料加压室（17）内的燃料加压定时。 当溢流阀构件（25,125）关闭以在燃料喷射器中升高燃料压力时，可能在阀座的区域中产生气蚀气泡。 这种气蚀可能导致溢流阀构件（25,125）和周围喷射器主体（11）的侵蚀。 为了抢救气蚀损伤，阀构件（25,125）可以被修改为包括复合环（26），其包括对应于所识别的空化损伤模式的小环（45）。 虽然在这样的策略之后产生气蚀气泡可能会持续，但可以通过先发制人的空化减少策略来减少气蚀侵蚀和相关的金属颗粒向燃料系统的释放。

公开(公告)号：WO2008088746A1

公开(公告)日：2008-07-24

申请号：PCT/US2008/000408

申请日：2008-01-11

Applicant: CATERPILLAR INC. ,  JOHANSON, Amy ,  MUELLER, Jeffrey ,  ROGERS, Eric, L. ,  LEWIS, Stephen, R. ,  COLDREN, Dana, R.

Inventor： JOHANSON, Amy ,  MUELLER, Jeffrey ,  ROGERS, Eric, L. ,  LEWIS, Stephen, R. ,  COLDREN, Dana, R.

IPC: F02M63/00 ,  F16K31/06

CPC classification number: F02M63/0015 ,  F02M47/027 ,  F02M57/023 ,  F02M61/205 ,  F02M63/004 ,  F02M63/0043 ,  F02M63/0049 ,  F02M63/0064 ,  F02M63/007 ,  F02M2200/8053 ,  Y10T29/49826 ,  Y10T137/0491 ,  Y10T137/6065

Abstract: A relatively inexpensive robust attachment strategy that insures good perpendicularity between a valve member (50) and an armature (52) utilizes an intervening nut (51) between the armature (52) and valve member (50). A valve member (50) is received in a guide bore (56) of a valve body (38). A nut (51) is threaded onto one end of a valve member (50). The armature (52) is press fit onto a orientation neutral interface (75) of the nut (51), and a fixture is utilized to set near perfect perpendicularity between an air gap plane (64) of the armature (52) and a centerline of the valve member (50). The armature (52) is then welded to the valve member (50). The weld (80) may be accomplished via laser welding while the valve assembly (40) is firmly held in an appropriate position within the fixture (90). The valve assembly (40) may be then incorporated into a fuel injector stack of components (17) in a conventional manner.

Abstract translation: 确保阀构件（50）和电枢（52）之间的良好垂直度的相对便宜的鲁棒附接策略利用电枢（52）和阀构件（50）之间的中间螺母（51）。 阀构件（50）被容纳在阀体（38）的引导孔（56）中。 螺母（51）被拧到阀构件（50）的一端上。 电枢（52）被压配合到螺母（51）的定向中性界面（75）上，并且固定装置用于设定电枢（52）的气隙平面（64）和中心线 的阀构件（50）。 然后将电枢（52）焊接到阀构件（50）。 焊接（80）可以通过激光焊接实现，同时阀组件（40）牢固地保持在固定装置（90）内的适当位置。 然后可以以常规方式将阀组件（40）结合到组件（17）的燃料喷射器组件中。

公开(公告)号：WO2010008882A2

公开(公告)日：2010-01-21

申请号：PCT/US2009/048447

申请日：2009-06-24

Applicant: CATERPILLAR INC. ,  COLDREN, Dana, R. ,  LI, Yongxiang ,  YACOUB, Victor, I.

Inventor： COLDREN, Dana, R. ,  LI, Yongxiang ,  YACOUB, Victor, I.

IPC: F02D41/30 ,  F02M51/06 ,  F02M61/10 ,  F02M61/16

CPC classification number: F02M47/027 ,  F02M57/021

Abstract: A mechanically actuated electronically controlled fuel injector (10) includes a first electrical actuator (21) that controls the position of a spill valve (22), and a second electrical actuator (31) to control pressure on a closing hydraulic surface (34) associated with a nozzle check valve (32). The fuel injector (10) is actuated via rotation of a cam (9) to move a plunger (15) to displace fuel from a fuel pressurization chamber (17) either to a spill passage (20) or at high pressure out of a nozzle outlet (12) of the fuel injector (10) for an injection event. Pressure in the fuel injector (10) is moderated when the plunger (15) is moving and the nozzle check valve (32) is in a closed position by briefly cracking open the spill valve (22) to relieve some pressure during the dwell (D) between injection events, such as between a large main injection event (51) and a small close coupled post injection event (52). This strategy allows for longer dwell times between injection events as well as smaller injection quantities in the post-injection.

Abstract translation: 机械致动的电子控制燃料喷射器（10）包括控制溢流阀（22）的位置的第一电致动器（21）和用于控制关闭的关闭液压表面（34）上的压力的第二电致动器（31） 配有喷嘴止回阀（32）。 燃料喷射器（10）通过凸轮（9）的旋转被致动以移动柱塞（15），以将来自燃料加压室（17）的燃料移至溢流通道（20）或高压出喷嘴 用于喷射事件的燃料喷射器（10）的出口（12）。 当柱塞（15）移动并且喷嘴止回阀（32）处于关闭位置时，燃料喷射器（10）中的压力缓和，通过短暂地打开泄漏阀（22）以在停留期间减轻一些压力（D ），例如在大的主喷射事件（51）和小的紧密耦合的喷射后事件（52）之间。 该策略允许注射事件之间更长的停留时间以及后注射中较小的注射量。

公开(公告)号：WO2016122826A1

公开(公告)日：2016-08-04

申请号：PCT/US2015/068254

申请日：2015-12-31

Applicant: CATERPILLAR INC.

Inventor： STEFFEN, Joshua, W. ,  COLDREN, Dana, R. ,  STOCKNER, Alan, R. ,  MAHMOOD, Sana ,  CAMPION, Robert, M. ,  BEAN, Sunil Jefferey

IPC: F02M21/02 ,  F04B1/16 ,  F04B15/08

CPC classification number: F04B1/143 ,  F04B1/16 ,  F04B15/08 ,  F04B2015/081

Abstract: A pumping mechanism (300) includes a barrel assembly (310) having a plunger bore (320). The plunger bore (320) has a longitudinal axis. The pumping mechanism (300) also includes a plunger (330) configured to slide within the plunger bore (320) parallel to the longitudinal axis. The pumping mechanism (300) further includes a push rod (114) separate from the plunger (330). The push rod (114) is configured to move away from the plunger (330) to be spaced from the plunger (330), and the push rod (114) is further configured to move within the plunger bore (320) to push the plunger (330).

Abstract translation: 泵送机构（300）包括具有柱塞孔（320）的筒组件（310）。 柱塞孔（320）具有纵向轴线。 泵送机构（300）还包括柱塞（330），其被构造成在柱塞孔（320）内平行于纵向轴线滑动。 泵送机构（300）还包括与柱塞（330）分离的推杆（114）。 推杆（114）构造成远离柱塞（330）移动以与柱塞（330）间隔开，并且推杆（114）进一步构造成在柱塞孔（320）内移动以推动柱塞 （330）。

公开(公告)号：WO2013048926A3

公开(公告)日：2013-04-04

申请号：PCT/US2012/056820

申请日：2012-09-24

Applicant: CATERPILLAR INC. ,  COLDREN, Dana, R.

Inventor： COLDREN, Dana, R.

IPC: F02M43/04 ,  F02M61/18 ,  F02M61/16

Abstract: Fuel injectors are disclosed that are capable of simultaneously delivering liquid and gaseous fuels to the combustion chamber (33) of a compression ignition engine. The fuels are delivered to the needle control valve cavity (32) sequentially via separate passageways. The delivery of the pressurized liquid fuel is actuated by the single actuator that is provided for each fuel injector (10). A liquid fuel check valve (34), in combination with the actuator, controls the delivery of the pilot liquid fuel to the needle control valve cavity (32). The gaseous fuel is supplied at a lower pressure than the liquid fuel, after the liquid fuel is delivered to the needle control valve cavity (32) and the gaseous fuel is supplied to the fuel injector (10) without a separate actuator. A check valve (34) in the gaseous fuel passage (28) closes the supply (27) of gaseous fuel when the pressure in the needle control valve cavity (32) rises to a predetermined level as liquid fuel is charged to the cavity (32) after an injection event.

公开(公告)号：WO2012006141A2

公开(公告)日：2012-01-12

申请号：PCT/US2011/042303

申请日：2011-06-29

Applicant: CATERPILLAR INC. ,  COLDREN, Dana, R. ,  ROGERS, Eric, L. ,  O'SHEA, Fergal, M. ,  WANG, Lifeng ,  JOSHI, Mandar, A.

Inventor： COLDREN, Dana, R. ,  ROGERS, Eric, L. ,  O'SHEA, Fergal, M. ,  WANG, Lifeng ,  JOSHI, Mandar, A.

IPC: F02M53/04 ,  F02M61/16 ,  F02M61/10 ,  F01P3/16

CPC classification number: F02M53/043 ,  F02M57/023 ,  F02M63/0017 ,  F02M63/007

Abstract: Various fuel injection systems and fuel injectors are disclosed that provide varying cooling rates for fuel injectors connected in series to fuel supply and drain rail. The local cooling rate for each injector is manipulated to balance the heat flux or heat transfer across the injectors disposed along the rail. The cooling rates may be manipulated by varying sizes of openings or slots in the nozzle case, by varying annular spaces disposed between the nozzle case and the portion of the injector body that houses the actuator and solenoid assembly, and by varying the size of annular spaces disposed between the nozzle case and the cylinder head. Strategic placement of slots in the nozzle case that direct more flow at the portion of the injector body that houses the actuator and solenoid assembly may also be employed. As a result, the operating temperatures of fuel injectors connected in series to a fuel rail can be manipulated and moderated so the downstream injectors are not prone to overheating.

Abstract translation: 公开了各种燃料喷射系统和燃料喷射器，其为与燃料供应和排出轨道串联连接的燃料喷射器提供变化的冷却速率。 操作每个喷射器的局部冷却速率以平衡沿着轨道布置的喷射器之间的热通量或热传递。 可以通过改变设置在喷嘴壳体和容纳致动器和螺线管组件的喷射器主体的部分之间的环形空间以及通过改变环形空间的尺寸来改变喷嘴壳体中的开口或狭槽的大小来控制冷却速度 设置在喷嘴壳体和气缸盖之间。 喷嘴壳体中的槽的策略布置也可以用于在容纳致动器和螺线管组件的喷射器主体的部分处引导更多的流动。 结果，可以操纵和调节与燃料轨串联连接的燃料喷射器的操作温度，使得下游喷射器不容易过热。

公开(公告)号：WO2007027331A1

公开(公告)日：2007-03-08

申请号：PCT/US2006/029252

申请日：2006-07-25

Applicant: CATERPILLAR INC. ,  COLDREN, Dana, R. ,  IBRAHIM, Daniel, R.

Inventor： COLDREN, Dana, R. ,  IBRAHIM, Daniel, R.

IPC: F02M47/02 ,  F02M63/00 ,  F02M45/02 ,  F02M45/08 ,  F02M45/12 ,  F02M59/46

CPC classification number: F02M45/12 ,  F02M45/02 ,  F02M45/08 ,  F02M47/027 ,  F02M63/0005 ,  F02M63/0007 ,  F02M63/0015 ,  F02M63/0028 ,  F02M63/0045 ,  F02M63/0049 ,  F02M63/0068 ,  F02M63/0225

Abstract: A common rail (16) single fluid fuel injection system (12) includes fuel injectors (14, 114) with a single electrical actuator (42) but the ability to produce ramp, square and split injection rate shapes. This is accomplished by including a control valve member (44) that is operably coupled to the electrical actuator and is movable between a high pressure seat (45) and a low pressure seat (46). A fuel supply passage (36) is opened to a nozzle passage by moving an admission valve member (60) from a closed position to an open position by relieving fuel pressure on a control surface (64) via movement of the control valve member (44). In addition, a needle valve member (71, 171) is movable from a closed position to an open position by relieving pressure on a closing hydraulic surface (74, 174) associated with the needle valve (70, 170), which is again accomplished via movement of the control valve member (44) via the electrical actuator (42).

Abstract translation: 共轨（16）单流体燃料喷射系统（12）包括具有单个电致动器（42）的燃料喷射器（14,114），但是具有产生斜坡，正方形和分离喷射速率形状的能力。 这通过包括可操作地联接到电致动器并且可在高压座（45）和低压座（46）之间移动的控制阀构件（44）来实现。 燃料供给通道（36）通过使控制阀构件（44）经由控制阀构件（44）的移动而将进入阀构件（60）从关闭位置移动到打开位置而向控制表面（64） ）。 此外，针阀构件（71,171）可以通过在与针阀（70,170）相关联的关闭液压表面（74,174）上释放压力而从关闭位置移动到打开位置，该关闭液压表面（74,174）再次完成 经由电致动器（42）通过控制阀构件（44）的移动。

公开(公告)号：WO2006138083A1

公开(公告)日：2006-12-28

申请号：PCT/US2006/021496

申请日：2006-06-02

Applicant: CATERPILLAR INC. ,  BUNNI, Nadeem, N. ,  COLDREN, Dana, R. ,  KRISHNASWANY, Harish, K. ,  LEWIS, Stephen, R.

Inventor： BUNNI, Nadeem, N. ,  COLDREN, Dana, R. ,  KRISHNASWANY, Harish, K. ,  LEWIS, Stephen, R.

IPC: F16K31/06 ,  H01F7/16 ,  H01F7/08 ,  F02M63/00 ,  F02M57/02 ,  F02M59/36 ,  F02M47/02

CPC classification number: F02M57/02 ,  F02M47/027 ,  F02M59/366 ,  F02M63/0015 ,  F02M63/0049 ,  F16K31/0675 ,  H01F7/081 ,  H01F7/1638

Abstract: An apparatus and method for controlling fluid flow is disclosed. An electromagnetic actuator may include a stator (60) having an inner pole member (68a, 68b) and an outer pole member (66). The outer pole member may have a fluid passageway (100) therein for transmitting fluid through the outer pole member. The actuator may further include a coil (64, 65) disposed around the inner pole member and arranged between the inner pole member and the outer pole member. The actuator may also include an armature (32, 42) moveable under the influence of a magnetic field generated by the stator and coil and operable to affect transmission of the fluid through the fluid passageway.

Abstract translation: 公开了一种用于控制流体流动的装置和方法。 电磁致动器可以包括具有内极构件（68a，68b）和外极构件（66）的定子（60）。 外部极构件可以具有其中的流体通道（100），用于将流体传送通过外部磁极构件。 致动器还可以包括设置在内极构件周围并设置在内极构件和外极构件之间的线圈（64,65）。 致动器还可以包括在由定子和线圈产生的磁场的影响下可移动的电枢（32,42），并可操作以影响流体通过流体通道的传播。