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公开(公告)号：US11280306B1
公开(公告)日：2022-03-22
申请号：US17150159
申请日：2021-01-15
Applicant: Caterpillar Inc.
Inventor： Manjunath Bannur Nagaraja , Venkata R. Tatikonda , Benjamin R. Tower
Abstract: A fuel injector includes an injector housing, a check control valve assembly within the injector housing, a direct-operated check, a valve biaser supported on the injector housing, and a dry-running protection valve trapped between the valve biaser and the injector housing. The dry-running protection valve limits expelling drained actuation fluid from the fuel injector to enable filling a low-pressure volume therein in advance of filling a low pressure drain line common to a plurality of fuel injectors in an internal combustion engine system.
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公开(公告)号：US11174827B1
公开(公告)日：2021-11-16
申请号：US17024891
申请日：2020-09-18
Applicant: Caterpillar Inc.
Inventor： Venkata R. Tatikonda , Manjunath Bannur Nagaraja , Stephen Robert Lewis , Adam Charles Hill
Abstract: A fuel injector body includes an at least partially annular configuration defining a longitudinal axis, a circumferential direction, and a radial direction. A first counterbore and a first cavity extend from the first end toward the second end, and an external interface portion includes a sealing surface disposed axially between the first end and a shoulder. The first cavity defines a bottom surface and a peripheral surface defining a first cavity diameter, and the sealing surface defines a sealing surface diameter. A ratio of the sealing surface diameter to the first cavity diameter ranges from 0.3 to 4.4.
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Patent Agency Ranking
公开(公告)号：US20180163677A1
公开(公告)日：2018-06-14
申请号：US15375551
申请日：2016-12-12
Applicant: Caterpillar Inc.
Inventor： Glenn B. Cox , Stephen R. Lewis , Adrienne M. Brasche , Venkata R. Tatikonda
Abstract: A valve assembly for a fuel pump is provided. The valve assembly may include an inlet valve limited to a first range of travel extending between a fully closed position and a fully opened position of the inlet valve, a valve pin coupled to the inlet valve, an armature pin selectively engaging the valve pin, and an armature coupled to the armature pin and limited to a second range of travel extending between an engaged position and a disengaged position that is less than the first range of travel.
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公开(公告)号：US20220282692A1
公开(公告)日：2022-09-08
申请号：US17191260
申请日：2021-03-03
Applicant: Caterpillar Inc.
Abstract: A fuel system for an internal combustion engine includes a pressurized fuel supply, and a fuel injector fluidly connected to the pressurized fuel supply. The fuel injector includes a valve seat plate forming a valve seat, an injection control valve, and a nozzle cavity. A filter, which can include a 2-dimensional filter, is positioned partially within the valve seat plate and partially within an injector body to filter an incoming flow of high-pressure fuel. The valve seat plate and filter are integrated in a valve seat plate and filter assembly.
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公开(公告)号：US11248575B1
公开(公告)日：2022-02-15
申请号：US17024974
申请日：2020-09-18
Applicant: Caterpillar Inc.
Inventor： Stephen Robert Lewis , Manjunath Bannur Nagaraja , Venkata R. Tatikonda , Adam Charles Hill
Abstract: A fuel injector body includes a body that includes an at least partially annular configuration defining a longitudinal axis, a circumferential direction, and a radial direction. A first counterbore and a first cavity extend from the first end toward the second end, and an external interface portion including a sealing surface is disposed axially between the first end and a shoulder. The first cavity defines a bottom surface and a peripheral surface, and the body also includes a leak passage extending from the bottom surface that is in communication with the first cavity.
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公开(公告)号：US12006902B2
公开(公告)日：2024-06-11
申请号：US17191260
申请日：2021-03-03
Applicant: Caterpillar Inc.
CPC classification number: F02M61/165 , F02M37/0047 , F02M61/12 , F02M61/1866
Abstract: A fuel system for an internal combustion engine includes a pressurized fuel supply, and a fuel injector fluidly connected to the pressurized fuel supply. The fuel injector includes a valve seat plate forming a valve seat, an injection control valve, and a nozzle cavity. A filter, which can include a 2-dimensional filter, is positioned partially within the valve seat plate and partially within an injector body to filter an incoming flow of high-pressure fuel. The valve seat plate and filter are integrated in a valve seat plate and filter assembly.
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公开(公告)号：US10662910B2
公开(公告)日：2020-05-26
申请号：US15375551
申请日：2016-12-12
Applicant: Caterpillar Inc.
Inventor： Glenn B. Cox , Stephen R. Lewis , Adrienne M. Brasche , Venkata R. Tatikonda
IPC: F02M37/00
Abstract: A valve assembly for a fuel pump is provided. The valve assembly may include an inlet valve limited to a first range of travel extending between a fully closed position and a fully opened position of the inlet valve, a valve pin coupled to the inlet valve, an armature pin selectively engaging the valve pin, and an armature coupled to the armature pin and limited to a second range of travel extending between an engaged position and a disengaged position that is less than the first range of travel.
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