公开(公告)号：US20210277856A1

公开(公告)日：2021-09-09

申请号：US17327851

申请日：2021-05-24

Applicant: Caterpillar Inc.

Inventor： Sana Mahmood ,  Robert M. Campion ,  Lifeng Wang

IPC: F02M51/06 ,  F16K31/124 ,  F02M61/04 ,  F02M63/00 ,  F02M47/02

Abstract: A fuel injector is disclosed. The fuel injector may have an injector body having a fuel inlet and at least one orifice. The fuel injector may also have a first check valve member. The first check valve member may be selectively movable to fluidly block a first flow of fuel from the fuel inlet to the at least one orifice. The fuel injector may have a second check valve member. The second check valve member may be selectively movable to fluidly block a second flow of fuel from the fuel inlet to the at least one orifice. The fuel injector may also have a control valve assembly. The control valve assembly may be configured to selectively operate either the first check valve or both the first check valve and the second check valve to fluidly connect the fuel inlet and the at least one orifice.

公开(公告)号：US10519916B1

公开(公告)日：2019-12-31

申请号：US16007418

申请日：2018-06-13

Applicant: Caterpillar Inc.

Inventor： Dana R. Coldren ,  Sana Mahmood ,  Stephen R. Lewis

IPC: F02M63/02 ,  F02M51/00 ,  F02M57/00 ,  F02M61/18 ,  F02M67/12

Abstract: A fuel system for an internal combustion engine includes a common rail and a plurality of fuel injectors connected to the common rail and each including an outlet check, an injection control valve, and an injection rate controller. The injection rate controller varies a flow area to a nozzle of the fuel injector such that a pressure drop through the fuel injector is varied to provide injection rate shaping.

公开(公告)号：US09970421B2

公开(公告)日：2018-05-15

申请号：US14668478

申请日：2015-03-25

Applicant: Caterpillar Inc.

Inventor： Dana R. Coldren ,  Sana Mahmood

IPC: F04B19/22 ,  F04B19/00 ,  F04B1/12 ,  F04B23/02 ,  F04B9/117 ,  F04B53/16 ,  F04B15/08

CPC classification number: F04B19/003 ,  F04B1/12 ,  F04B9/117 ,  F04B15/08 ,  F04B23/02 ,  F04B53/16

Abstract: A pump for use in pressurizing a cryogenic fluid. The pump may have a barrel, and a boost enclosure disposed around the barrel. The pump may also have a boost plunger disposed inside the barrel and configured to discharge fluid into the boost enclosure. The pump may further have a main plunger disposed inside the barrel and configured to receive fluid from the boost enclosure and to increase a pressure of the fluid.

公开(公告)号：US20180119693A1

公开(公告)日：2018-05-03

申请号：US15341033

申请日：2016-11-02

Applicant: Caterpillar Inc.

Inventor： Sana Mahmood ,  Dennis H. Gibson

IPC: F04B49/22 ,  F16F9/19 ,  F04B15/08 ,  F04B19/22 ,  F04B53/10 ,  F04B53/14 ,  F04B53/16 ,  F15B13/04

CPC classification number: F04B49/22 ,  F04B15/08 ,  F04B19/22 ,  F04B53/10 ,  F16K1/00

Abstract: A damping assembly for a valve is provided. The valve is configured to move between an open position and a close position. The valve includes a valve element and a valve stem disposed within a head. The damping assembly includes a damping chamber defined within the head. The damping assembly defines a sidewall. The damping assembly also includes a collar configured to receive the valve stem. The collar includes a collar stem. The collar also includes a collar head having an outer diameter. The collar head includes a side surface. The damping assembly includes a liquid passageway. The liquid passageway is being defined by a radial clearance between the side surface of the collar head and the sidewall of the damping chamber. The liquid passageway is configured to control a flow of a liquid as the valve moves between the open position and the closed position.

公开(公告)号：US20160377068A1

公开(公告)日：2016-12-29

申请号：US14753585

申请日：2015-06-29

Applicant: Caterpillar Inc.

Inventor： Cory A. Brown ,  Adrienne M. Brasche ,  Sunil J. Bean ,  Shivangini S. Hazari ,  Sana Mahmood ,  Nikhil M. Arya ,  Joshua W. Steffen ,  Daniel R. Baldwin ,  Dana R. Coldren ,  Robert M. Campion ,  Alan R. Stockner

IPC: F04B15/08 ,  F04B7/02 ,  F04B1/12 ,  F04B1/28 ,  F04B1/16

CPC classification number: F04B23/02 ,  F04B9/1176 ,  F04B23/023 ,  F04B23/06 ,  F04B37/08 ,  F04B49/065 ,  F04B2015/081 ,  F17C2227/0142

Abstract: A cryogenic fluid pump includes a plurality of pumping elements, each of the plurality of pumping elements having an actuator portion that is associated with and configured to selectively activate one end of a pushrod in response to a command by an electronic controller, an activation portion associated with an opposite end of the pushrod, and a pumping portion associated with the activation portion. For each of the plurality of pumping elements, the pumping portion is activated for pumping a fluid by the activation portion, which activation portion is activated by the actuator portion. The electronic controller is configured to selectively activate each of the plurality of pumping elements such that a flow of fluid from the cryogenic fluid pump results from continuous activations of the plurality of pumping elements at selected dwell times between activations of successive pumping elements.

Abstract translation: 低温流体泵包括多个泵送元件，所述多个泵送元件中的每一个具有致动器部分，所述致动器部分响应于电子控制器的命令而相关联并且被配置为选择性地激活推杆的一端，激活部分相关联 其具有推杆的相对端，以及与激活部分相关联的泵送部分。 对于多个泵送元件中的每一个，泵送部分被启动，用于通过致动部分泵送流体，该致动部分由致动器部分激活。 电子控制器被配置为选择性地激活多个泵送元件中的每一个，使得来自低温流体泵的流体流由连续泵送元件的激活之间选定的停留时间的多个泵送元件的连续激活产生。

公开(公告)号：US20140352664A1

公开(公告)日：2014-12-04

申请号：US14460623

申请日：2014-08-15

Applicant: Caterpillar Inc.

Inventor： Dana R. Coldren ,  Dennis H. Gibson ,  Sana Mahmood ,  Sunil J. Bean

IPC: F02D19/06

CPC classification number: F02D19/0678 ,  F02D19/0623 ,  F02D19/0647 ,  F02D19/0694 ,  F02D19/105 ,  Y02T10/36

Abstract: The present disclosure is related to a flow limiting system for a dual fuel engine is disclosed. The flow limiting system includes a first valve configured to regulate a flow of a liquid fuel therethrough based on a pressure difference across the first valve. The flow limiting system further includes a second valve configured to regulate a flow of a gaseous fuel therethrough based on a pressure difference across the second valve. The second valve includes a valve body movably provided within a valve chamber. The valve body includes a control orifice extending therethrough. The valve body also includes grooves defined on an outer surface thereof.

Abstract translation: 本公开涉及一种用于双燃料发动机的流量限制系统。 流量限制系统包括第一阀，其构造成基于跨越第一阀的压力差来调节液体燃料流过其中的流动。 流量限制系统还包括第二阀，其构造成基于穿过第二阀的压差来调节气体燃料的流动。 第二阀包括可移动地设置在阀室内的阀体。 阀体包括延伸穿过其中的控制孔。 阀体还包括限定在其外表面上的凹槽。

公开(公告)号：US20140175193A1

公开(公告)日：2014-06-26

申请号：US13725678

申请日：2012-12-21

Applicant: CATERPILLAR INC.

Inventor： Bryan D. Moore ,  Sana Mahmood ,  Daniel R. Ibrahim

IPC: F02M61/18

CPC classification number: F02M61/1886 ,  F02M61/18 ,  F02M61/1846

Abstract: A nozzle for a fuel injector is disclosed. The nozzle may have an internal axial nozzle bore. The nozzle may also have at least one orifice passing from the nozzle bore radially outward through a wall of the nozzle at a tip end. Further, the nozzle may have a sac volume formed in the tip end and defined by a bore radius and a tip radius. The bore radius may be generally perpendicular to the central bore. The tip radius may be generally parallel to the central bore. The tip radius may be less than the bore radius.

Abstract translation: 公开了一种用于燃料喷射器的喷嘴。 喷嘴可以具有内部轴向喷嘴孔。 喷嘴还可以具有至少一个孔，其从喷嘴孔径向向外通过喷嘴的壁在尖端处。 此外，喷嘴可以具有形成在尖端中并由孔半径和尖端半径限定的囊容积。 孔径可以大致垂直于中心孔。 尖端半径可以大致平行于中心孔。 尖端半径可能小于孔半径。