公开(公告)号：US20250052219A1

公开(公告)日：2025-02-13

申请号：US18720790

申请日：2022-12-20

Applicant: Cummins Inc.

Inventor： Romaine O. Edwards ,  Jason R. Garcia ,  Steve W. Gillespie

IPC: F02M47/02 ,  F02M55/00 ,  F02M63/00

Abstract: A fuel injector including a flow balanced injector needle seal is provided. The fuel injector includes a needle in a fuel passage of the fuel injector body. The needle moves longitudinally in the fuel passage to selectively stop and start fuel injection from the fuel passage. The fuel injector includes a check valve assembly that maintains pressurized fuel in the fuel passage and permits fuel flow out of the fuel passage in response to a fuel injection event. The needle seal is provided between the check valve assembly and a sleeve that extends around the proximal end of the needle. The needle seal includes multiple inlet orifices for receiving a fuel flow into the needle seal that are positioned relative to one another so that net lateral forces on the needle are effectively offset from one another.

公开(公告)号：US20240318609A1

公开(公告)日：2024-09-26

申请号：US18733025

申请日：2024-06-04

Applicant: ICOM North America LLC

Inventor： Brandon Geoffrey Thorn ,  Albert Venezio, III

IPC: F02D41/38 ,  F02M55/00 ,  F02M63/02

CPC classification number: F02D41/3845 ,  F02D41/3863 ,  F02M55/007 ,  F02M63/0225

Abstract: A fuel return device couples to the high pressure side of a DI fuel system. The fuel return device provides for both continuous bleeding and occasional purging of fuel from the high pressure side to prevent issues related to vapor accumulation or heat-induced pressure increase. The fuel return device may be attached to a high pressure fuel rail in place of a sensor. The sensor may be attached the fuel return device. The fuel return device may include both an orifice that throttles the fuel flow through the fuel return device and a solenoid that allows the flow rate to be increased.

公开(公告)号：US12092060B2

公开(公告)日：2024-09-17

申请号：US17578171

申请日：2022-01-18

Applicant: Cummins Inc.

Inventor： Donald J. Benson ,  Ahmad M. Sabri

IPC: F02M55/00 ,  B05B1/30 ,  F02M51/06 ,  F02M61/04 ,  F02M61/18

CPC classification number: F02M55/002 ,  B05B1/3053 ,  F02M51/0603 ,  F02M61/04 ,  F02M61/1806 ,  F02M61/1886 ,  F02M2200/21 ,  F02M2200/26 ,  F02M2200/9053

Abstract: A fuel injector includes an injector body comprising an internal injector cavity, a flow passageway, and a drain conduit. The flow passageway is in fluid communication with at least one injector orifice. The fuel injector further includes a valve assembly comprising a valve seat and a valve member in fluid communication with the fuel circuit. The valve member is configured to move between an open position allowing fuel flow through the at least one injector orifice and a closed position inhibiting fuel flow through the at least one injector orifice. The fuel injector also includes a nozzle valve element fluidly coupled to the valve assembly, an actuator operably coupled to the valve assembly and the nozzle valve element, and a flexible member configured to elastically deform in response to pressure in the fuel injector. The flexible member is configured to inhibit flow to the drain circuit during an injection event.

公开(公告)号：US12049857B2

公开(公告)日：2024-07-30

申请号：US18071301

申请日：2022-11-29

Applicant: Industrial Injection Services, Inc.

Inventor： Dustin S. Hembury ,  Randall P. Farmer ,  Cody Q. Lamb ,  Bryton S. Williams ,  Shane B. Williams

IPC: F02M53/00 ,  F02M53/04 ,  F02M55/00 ,  F02M61/14 ,  F02M61/16

CPC classification number: F02M55/004 ,  F02M53/043 ,  F02M61/14 ,  F02M61/168 ,  F02M2200/16 ,  F02M2200/8076 ,  F02M2200/858

Abstract: An improved injector cup may be used in diesel engines that fits more securely into the engine's cylinder heads to better prevent engine coolant from leaking into the fuel and/or fuel leaking into the coolant. An improved injector cup may be designed to accommodate specific engine types and sizes in order to prevent engine coolant from leaking into the fuel and/or fuel leaking into the coolant.

公开(公告)号：US11852112B2

公开(公告)日：2023-12-26

申请号：US17103223

申请日：2020-11-24

Applicant: Caterpillar Inc.

Inventor： Benjamin R. Tower ,  Daniel R. Ibrahim

IPC: F02M61/16 ,  F02M55/00 ,  F02M61/18 ,  F02M55/02

CPC classification number: F02M61/165 ,  F02M55/008 ,  F02M55/025 ,  F02M61/1806 ,  F02M2200/27

Abstract: A fuel injector for a common rail fuel system includes an energizer section, an injector section, and control section axially disposed along an injector axis. To control and injection event, the control section includes a control orifice manifold that has a plurality of control orifices and control passages to distribute high pressure fuel with the injector assembly. To prevent plugging of the control orifices and passages, an internal filter element with a plurality of filtration orifices is located in proximity to the control orifice manifold.

公开(公告)号：US11815055B1

公开(公告)日：2023-11-14

申请号：US18060931

申请日：2022-12-01

Applicant: Caterpillar Inc.

Inventor： Dana R. Coldren ,  Lifeng Wang ,  Eric L. Schroeder

IPC: F02M43/04 ,  F02M51/06 ,  F02M55/00 ,  F02M47/04

CPC classification number: F02M43/04 ,  F02M47/046 ,  F02M51/06 ,  F02M55/002

Abstract: A fuel injector capable of injecting a plurality of different fuels in a single fuel injection event includes a body including a primary fuel path and a pilot fuel path and a first plunger in fluid communication with the pilot fuel path. The fuel injector also includes a second plunger in fluid communication with the primary fuel path and with the pilot fuel path, a hydraulic control chamber within the pilot fuel path, and an injection valve at which the primary fuel path and the pilot fuel path connect to each other.

公开(公告)号：US11692630B2

公开(公告)日：2023-07-04

申请号：US16854353

申请日：2020-04-21

Applicant: Ford Global Technologies, LLC

Inventor： JonCarlo Mancini ,  Gary J. Haddix

IPC: F16J15/12 ,  F02M55/00

CPC classification number: F16J15/121 ,  F02M55/004 ,  F02M2200/16

Abstract: Methods and systems are provided for a sealing device. In one example, a seal comprises a plurality of radial features and a plurality of axial features extending from a cylindrical body, the cylindrical body comprises a first material and a second material, wherein the second material is stiffer than the first material.

公开(公告)号：US11493002B1

公开(公告)日：2022-11-08

申请号：US17518200

申请日：2021-11-03

Applicant: Caterpillar Inc.

Inventor： Allen Y. Chen ,  Dean W. Walters ,  Jason L. Van Farowe ,  DeForest C. Gould

IPC: F02M26/12 ,  F02M26/24 ,  F02M26/30 ,  F02M37/00 ,  F02M55/00 ,  F02M63/02 ,  F02M26/32

Abstract: An exhaust gas recirculation (EGR) cooler for mounting to a coolant collector bracket may include a cooler body having a top, a bottom, a length extending in a longitudinal direction, and a width extending in a lateral direction perpendicular to the longitudinal direction, and at least one mount coupled to the bottom of the cooler body. An interior of the mount may be in fluid communication with an interior of the cooler body. A width of the at least one mount in the lateral direction of the cooler body may be equal to or less than the width of the cooler body. The at least one mount may be positioned such that the mount does not extend beyond the width of the cooler body.

公开(公告)号：US11441524B2

公开(公告)日：2022-09-13

申请号：US17084252

申请日：2020-10-29

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

Inventor： Hyeon Jin Lee

IPC: F02M51/06 ,  F02M61/10 ,  F02M61/18 ,  F02M55/00

Abstract: A piezoelectric injector includes: a first piezo actuator and a second piezo actuator; a control valve connected to the first piezo actuator and the second piezo actuator through a control piston; at least one drain chamber in which the control valve and the control piston are movably received; a control chamber connected to the drain chamber through a first drain throttle and a second drain throttle having different diameters; and a needle movable by a change in fuel pressure of the control chamber to open and close at least one nozzle orifice. As at least one of the first piezo actuator and the second piezo actuator expands, a fuel is drained from the control chamber to the drain chamber through at least one of the first drain throttle and the second drain throttle.

公开(公告)号：US11352992B2

公开(公告)日：2022-06-07

申请号：US16788838

申请日：2020-02-12

Applicant: DELPHI TECHNOLOGIES IP LIMITED

Inventor： Ghislain Hardouin ,  Fabrizio A. Bonfigli ,  Allan R. Wells

IPC: F02M55/00 ,  F02M63/00

Abstract: A fuel injector includes an upper housing having an outer peripheral surface; a nozzle tip with a nozzle opening which serves as an outlet to fuel from the fuel injector; and a valve needle which is selectively moveable between a first position which prevents fuel flow and a second position which permits fuel flow. The fuel injector also includes an inlet sleeve which includes an inner peripheral surface which circumferentially surrounds, and mates with, the outer peripheral surface of the upper housing. The inlet sleeve is fixed to the upper housing, thereby preventing relative movement between the inlet sleeve and the upper housing. The inlet sleeve includes external threads which are configured to mate with complementary internal threads of a nut which secures a fuel supply conduit to the upper housing.