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公开(公告)号：US12234782B1
公开(公告)日：2025-02-25
申请号：US18373388
申请日：2023-09-27
Applicant: Caterpillar Inc.
Inventor： Hoisan Kim , Dana Ray Coldren , Lifeng Wang
Abstract: A dual fuel engine system includes an engine, and a fuel system including a pressurized fuel reservoir, a first fuel pump, and a plurality of second fuel pumps each having an actuating fluid inlet fluidly connected to at least one of the first fuel pump or the pressurized fuel reservoir. The plurality of second fuel pumps may intensify or de-intensify a pressure of a second fuel relative to a pressure of the first fuel used to actuate the second fuel pumps so as to obtain an increased flow rate of the second fuel. Related apparatus and methodology is also disclosed.
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公开(公告)号：US11815054B2
公开(公告)日：2023-11-14
申请号：US17831668
申请日：2022-06-03
Applicant: Caterpillar Inc.
Inventor： Eric Lee Schroeder , David Todd Montgomery , Dana Ray Coldren , Chad Koci
CPC classification number: F02M43/04 , F02D19/0694 , F02D19/0649 , F02D19/10 , F02M47/027 , F02M2200/46
Abstract: A dual fuel system for an internal combustion engine includes a first fuel supply of a liquid pilot fuel, a primary fuel supply of a liquid primary fuel, and a dual fuel injector. The dual fuel injector includes a spill valve fluidly connected with a plunger cavity and movable to control a start of injection and an end of injection, and an admission valve. The admission valve is movable to admit a pilot fuel into the fuel injector, such that the pilot fuel is conveyed through an outlet check to form, within a primary fuel passage fluidly connected to the plunger cavity, a segmented fuel charge of leading pilot fuel and trailing primary fuel by displacing some of the primary fuel. The liquid pilot fuel may be a higher cetane/lower octane liquid fuel, and the primary fuel may be a lower cetane/higher octane liquid fuel.
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公开(公告)号：US11506162B2
公开(公告)日：2022-11-22
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
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.
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4.发明申请公开(公告)号：US20210231037A1
公开(公告)日：2021-07-29
申请号：US16752555
申请日：2020-01-24
Applicant: Caterpillar Inc.
Inventor： Dana Ray Coldren
IPC: F01N3/00 , H02K7/18 , H02K9/26 , F01N3/04 , F02B63/04 , F01N3/02 , F01N3/033 , F01N3/28 , C02F1/16
Abstract: Operating a machine system for co-production of electrical power and filtered potable water includes operating an electrical generator by way of rotation of an engine output shaft to produce electrical power, and collecting water condensed from cooled treated exhaust from the engine for delivery to an outgoing water conduit. Operating the machine system further includes supplying electrical power produced by the electrical generator to an in situ electrical load, and to at least one ex situ electrical load such as a power grid. The in situ electrical load is produced by at least one of an exhaust conveyance device, an air conveyance device, or a water conveyance device in a water subsystem.
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公开(公告)号：US10036383B2
公开(公告)日：2018-07-31
申请号：US14681006
申请日：2015-04-07
Applicant: Caterpillar Inc.
Inventor： Alan Ray Stockner , Sana Mahmood , Joshua Steffen , Dana Ray Coldren
CPC classification number: F04B53/14 , F04B53/008 , F04B2015/081
Abstract: A pump piston is disclosed. The pump piston may include a body having an actuating end, a pressurizing end opposite the actuating end, and an outer diameter that is greater at the pressurizing end than at the actuating end, wherein the outer diameter varies between the pressurizing end and the actuating end without increasing to form an outer diameter profile.
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Patent Agency Ranking
公开(公告)号：US20240301849A1
公开(公告)日：2024-09-12
申请号：US18118982
申请日：2023-03-08
Applicant: Caterpillar Inc.
Inventor： Dana Ray Coldren , Bryan E. Nelson , Hoisan Kim
CPC classification number: F02M37/0017 , B63H21/14 , B63H21/38 , F02M37/0023 , F02M37/0052 , F02M37/0088 , F02M37/04 , F02M37/32
Abstract: An alternative fuel management system may include a base configured for arrangement on a supporting floor or other framework of a vessel and configured to support alternative fuel supply equipment. The system may also include a sealed enclosure sealingly coupled to the base and configured to surround the alternative fuel supply equipment. The system may also include the alternative fuel supply equipment and it may be arranged within the sealed enclosure. The alternative fuel supply equipment may include a high-pressure pump, a fuel filter, a transfer pump, and a high-pressure fuel delivery line extending across the sealed enclosure and configured to provide alternative fuel from the high-pressure pump to a combustion engine. The alternative fuel management system may also include a purge fluid system configured to deliver purge fluid to the combustion engine from a source of purge fluid.
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公开(公告)号：US20240044308A1
公开(公告)日：2024-02-08
申请号：US18490231
申请日：2023-10-19
Applicant: Caterpillar Inc.
Inventor： Eric Lee Schroeder , David Todd Montgomery , Dana Ray Coldren , Chad Koci
CPC classification number: F02M43/04 , F02D19/0694 , F02D19/0649 , F02D19/10
Abstract: A dual fuel system for an internal combustion engine includes a first fuel supply of a liquid pilot fuel, a primary fuel supply of a liquid primary fuel, and a dual fuel injector. The dual fuel injector includes a spill valve fluidly connected with a plunger cavity and movable to control a start of injection and an end of injection, and an admission valve. The admission valve is movable to admit a pilot fuel into the fuel injector, such that the pilot fuel is conveyed through an outlet check to form, within a primary fuel passage fluidly connected to the plunger cavity, a segmented fuel charge of leading pilot fuel and trailing primary fuel by displacing some of the primary fuel. The liquid pilot fuel may be a higher cetane/lower octane liquid fuel, and the primary fuel may be a lower cetane/higher octane liquid fuel.
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公开(公告)号：US11125147B2
公开(公告)日：2021-09-21
申请号：US16437870
申请日：2019-06-11
Applicant: Caterpillar Inc.
Inventor： Scott B. Fiveland , Dana Ray Coldren
Abstract: An ignition system for an internal combustion engine includes an igniter having an igniter housing with a combustion prechamber formed therein, and a piston movable within the igniter housing to increase a pressure of an ignition charge of fuel and air within the combustion prechamber to an autoignition threshold. The ignition system includes a hydraulic actuator to apply an actuating force to the piston. Related methodology is disclosed.
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公开(公告)号：US09562497B2
公开(公告)日：2017-02-07
申请号：US14308139
申请日：2014-06-18
Applicant: Caterpillar Inc.
Inventor： Dana Ray Coldren
CPC classification number: F02M21/0275 , F02M21/0254 , F02M21/0257 , F02M51/0603 , F02M63/0026 , Y02T10/32
Abstract: A fuel injector is disclosed for use in an engine system. The fuel injector may have a body, a first piston slidingly disposed in the body and having a first pressure area, and a second piston slidingly disposed in the body and having a second pressure area. The fuel injector may also have a hydraulic coupling connecting the first and second pressure areas, and a piezo stack connected to move the first piston. The fuel injector may additionally have a valve needle configured to engage and be moved by the second piston. The first pressure area may be larger than the second pressure area.
Abstract translation: 公开了一种用于发动机系统中的燃料喷射器。 燃料喷射器可以具有主体，滑动地设置在主体中并且具有第一压力区域的第一活塞和滑动地设置在主体中并且具有第二压力区域的第二活塞。 燃料喷射器还可以具有连接第一和第二压力区域的液压联接器和连接以移动第一活塞的压电堆叠。 燃料喷射器可以另外具有构造成与第二活塞接合和移动的阀针。 第一压力区域可以大于第二压力区域。
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公开(公告)号：US09234468B2
公开(公告)日：2016-01-12
申请号：US13724544
申请日：2012-12-21
Applicant: Caterpillar Inc.
Inventor： Dana Ray Coldren
CPC classification number: F02D19/0673 , F01N3/0253 , F01N3/035 , F01N3/106 , F01N3/36 , F01N2610/03 , F01N2610/06 , F01N2610/10 , F01N2900/1808 , F02D19/0605 , F02D19/0628 , F02D19/0647 , F02M21/0224 , F02M21/0287 , Y02T10/32 , Y02T10/36
Abstract: A fuel system for a dual fuel power source includes a first fuel circuit fluidly connected to the power source, a second fuel circuit separate from the first fuel circuit and fluidly connected to the power source, and a pressure regulator fluidly connected to the first fuel circuit. The pressure regulator is configured to vent a first fuel from the first fuel circuit to an aftertreatment system fluidly connected to the power source in response to a pressure difference between the first and second fuel circuits being less than or equal to a pressure difference threshold.
Abstract translation: 一种用于双燃料电源的燃料系统包括流体地连接到电源的第一燃料电路，与第一燃料电路分离并且流体连接到电源的第二燃料电路和流体连接到第一燃料电路的压力调节器 。 压力调节器构造成响应于第一和第二燃料回路之间的压力差小于或等于压力差阈值，将第一燃料从第一燃料回路排放到流体连接到电源的后处理系统。
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