公开(公告)号：US11674487B2

公开(公告)日：2023-06-13

申请号：US17304127

申请日：2021-06-15

Applicant: Caterpillar Inc.

Inventor： Cory Andrew Brown ,  Adam L. Stecklein

IPC: F02M61/10 ,  F02M61/20

CPC classification number: F02M61/10 ,  F02M61/20 ,  F02M2200/9053

Abstract: A fuel injector includes a needle valve including a spring-retaining section and a guide section that is adjacent to the spring-retaining section. The spring-retaining section includes an elongated portion and a flange that are together configured to support a spring assembly. The guide section includes a plurality of constricted portions alternatingly arranged with a plurality of expanded portions to define an undulating shape of the guide section. Each of the plurality of expanded portions includes a plurality of indentations to permit fuel to travel therealong to exit an outlet of the fuel injector. The guide section has a length that is substantially equal to a length of the spring-retaining section.

公开(公告)号：US20220154673A1

公开(公告)日：2022-05-19

申请号：US16950026

申请日：2020-11-17

Applicant: Caterpillar Inc.

Inventor： Cory Andrew Brown ,  Sana Mahmood ,  Dana Ray Coldren ,  Glenn Brian Cox ,  Matthew Robert Vanderveen

IPC: F02M47/02 ,  F02M63/00

Abstract: A fuel system includes a fuel injector having a split check assembly with a control piece, an outlet piece, and a check sleeve. A trapped volume is formed between the control piece and the outlet piece within the check sleeve, to hydraulically couple the control piece to the outlet piece. A starting rate shape clearance fluidly connects the trapped volume to a fuel cavity and is formed between the check sleeve and one of the control piece or outlet piece received therein, and modulates a starting rate shape of fuel injection from the fuel injector. Related methodology is disclosed.

公开(公告)号：US09828987B2

公开(公告)日：2017-11-28

申请号：US14610264

申请日：2015-01-30

Applicant: Caterpillar Inc.

Inventor： Joshua Wayne Steffen ,  Cory Andrew Brown

IPC: F04B49/24 ,  F04B23/02 ,  F04B23/06 ,  F04B53/10 ,  F02M59/02 ,  F02M59/38 ,  F02M21/02

CPC classification number: F04B49/24 ,  F02M21/0215 ,  F02M21/0245 ,  F02M21/0287 ,  F02M59/025 ,  F02M59/38 ,  F04B1/14 ,  F04B15/08 ,  F04B23/02 ,  F04B23/021 ,  F04B23/06 ,  F04B49/02 ,  F04B53/08 ,  F04B53/10 ,  F04B2015/081 ,  Y02T10/32

Abstract: A pump includes a reservoir configured to receive a fluid pressurized by a boost pump. The pump also includes at least one pumping mechanism configured to receive a first flow of fluid from the reservoir and direct the first flow of fluid into a discharge passage of the pump without pumping the first flow of fluid when priming the pump. The at least one pumping mechanism is disposed in the reservoir such that the fluid in the reservoir surrounds at least a portion of the at least one pumping mechanism. The discharge passage is configured to output the first flow of fluid from the pump. The pump further includes a bypass passage configured to communicate a second flow of fluid from the reservoir to the storage tank.

公开(公告)号：US20130319373A1

公开(公告)日：2013-12-05

申请号：US13905285

申请日：2013-05-30

Applicant: Caterpillar, Inc.

Inventor： Cory Andrew Brown ,  Dana R. Coldren

IPC: F02M43/04

CPC classification number: F02M43/04 ,  F02M21/0209 ,  F02M21/0212 ,  F02M21/0215 ,  F02M21/0218 ,  F02M21/0248 ,  F02M21/0251 ,  F02M21/0254 ,  F02M21/0257 ,  F02M21/026 ,  F02M21/0263 ,  F02M2200/44 ,  Y02T10/36

Abstract: A dual fuel injector in a dual common rail fuel system includes an injector body defining a liquid fuel supply passage to a liquid fuel nozzle outlet, and a gaseous fuel supply passage to a gaseous fuel nozzle outlet. A liquid fuel needle check is movable within the injector body and has an opening hydraulic surface exposed to a fuel pressure of a liquid fuel common rail. A gaseous fuel needle check is positioned side by side with the liquid fuel needle check and has an opening hydraulic surface exposed to the fuel pressure of the liquid fuel common rail. Sensitivity to differences in gaseous fuel rail pressure and liquid fuel rail pressure is reduced by the design.

Abstract translation: 双共用燃料燃料系统中的双燃料喷射器包括限定到液体燃料喷嘴出口的液体燃料供给通道的喷射器主体和气体燃料喷嘴出口的气体燃料供给通道。 液体燃料针检查可在喷射器主体内移动，并具有暴露于液体燃料共轨的燃料压力的开启液压表面。 气体燃料针检查与液体燃料针检查并排定位，并且具有暴露于液体燃料共轨的燃料压力的开口液压表面。 通过设计可以降低气体燃料轨压力和液体燃料轨压力差异的灵敏度。