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公开(公告)号：US20190128228A1
公开(公告)日：2019-05-02
申请号：US15796916
申请日：2017-10-30
Applicant: Caterpillar Inc.
Inventor： Bobby John , Glen Martin , Jonathan W. Anders , Robert Campion
CPC classification number: F02M47/06 , F02M55/002 , F02M57/02 , F02M61/1886 , F02M63/0043 , F02M2200/46
Abstract: A fuel system includes a fuel injector having a fuel passage and a purging fluid passage formed therein. A nozzle tip inner surface defines a sac forming a blind end of the fuel passage in the fuel injector. A coaxial concentric check assembly includes a purging check movable to admit a purging fluid such as pressurized air into the fuel passage to purge the sac of fuel. Reduced injector dribble is observed from the purging of fuel.
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公开(公告)号：US20170045022A1
公开(公告)日：2017-02-16
申请号：US14824919
申请日：2015-08-12
Applicant: Caterpillar Inc.
Inventor： Joshua Wayne Steffen , Sunil Bean , Cory Andrew Brown , Robert Campion
CPC classification number: F02M37/04 , F02M21/0215 , F02M21/0221 , F02M21/0245 , F02M37/0047 , F04B9/10 , F04B17/05 , F04B49/065 , F04B49/08 , F04B2205/05 , F04B2205/09 , F04B2205/10 , Y02T10/32
Abstract: A fuel pump system configured to control a pressure pulse within a fuel system. The fuel pump system includes a conduit and a pump fluidly coupled to the conduit. The conduit has a conduit volume and is configured to contain fuel within. The pump includes a first pump stage in which the pump defines a maximum pump displacement and a second pump stage in which the pump defines a minimum pump displacement. The pump is configured to provide an output mass of fuel to the conduit when the pump transitions from the first pump stage to the second pump stage, causing pressure of the fuel within the conduit to pulse. The maximum pump displacement is set to a value defined by a ratio of the output mass of fuel per the conduit volume needed to maintain the pressure pulse in the conduit within a predetermined pressure pulse range.
Abstract translation: 一种配置成控制燃料系统内的压力脉冲的燃料泵系统。 燃料泵系统包括导管和流体地联接到导管的泵。 导管具有导管容积并被构造成在其内容纳燃料。 泵包括第一泵级，其中泵限定最大泵排量，第二泵级定义泵的最小位移。 泵被配置成当泵从第一泵级从第一泵级转变到第二泵级时，向管道提供输出质量的燃料，从而导致管道内的燃料的压力脉动。 最大泵排量被设定为由将管道内的压力脉冲维持在预定压力脉冲范围内所需的导管容积的输出质量比的比值定义的值。
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公开(公告)号：US10767610B2
公开(公告)日：2020-09-08
申请号：US16107199
申请日：2018-08-21
Applicant: Caterpillar Inc.
Inventor： Jonathan W Anders , Bobby John , Robert Campion
Abstract: A liquid fuel injector for a fuel system in an internal combustion engine includes two injection control valves for controlling two outlet checks. A common nozzle supply cavity is fluidly connected to an inlet passage and supplies each of the two sets of nozzle outlets opened and closed by the outlet checks. A first nozzle outlet set forms a narrower spray angle and has a first combination of outlet number and outlet size, and a second nozzle outlet set forms a wider spray angle and has a second combination of outlet number and outlet size. The first nozzle outlet set has a greater steady flow than the second nozzle outlet set.
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公开(公告)号：US10378495B2
公开(公告)日：2019-08-13
申请号：US15796916
申请日：2017-10-30
Applicant: Caterpillar Inc.
Inventor： Bobby John , Glen Martin , Jonathan W. Anders , Robert Campion
Abstract: A fuel system includes a fuel injector having a fuel passage and a purging fluid passage formed therein. A nozzle tip inner surface defines a sac forming a blind end of the fuel passage in the fuel injector. A coaxial concentric check assembly includes a purging check movable to admit a purging fluid such as pressurized air into the fuel passage to purge the sac of fuel. Reduced injector dribble is observed from the purging of fuel.
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公开(公告)号：US20200063701A1
公开(公告)日：2020-02-27
申请号：US16106665
申请日：2018-08-21
Applicant: Caterpillar Inc.
Inventor： Jonathan W. Anders , Bobby John , Robert Campion
Abstract: Operating an engine includes injecting a first charge of liquid fuel using a first set of nozzle outlets in a fuel injector, and injecting a second charge of liquid fuel using a second set of nozzle outlets in a fuel injector. The first charge is autoignited in a first engine cycle, and the second charge is autoignited in a second engine cycle, and may be used to pilot ignite a charge of gaseous fuel. Operating the engine further includes limiting errors in targeting of the second charge of liquid fuel caused by transitioning the engine from a first combination to a second combination of speed, load, and boost, by varying an injection pressure of the liquid fuel from the first engine cycle to the second engine cycle.
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Patent Agency Ranking
公开(公告)号：US09976527B1
公开(公告)日：2018-05-22
申请号：US15405925
申请日：2017-01-13
Applicant: Caterpillar Inc.
Inventor： Robert Campion , George Kodikulam Joseph , Satya Naga Deepak Pillarisetti , Zhenyu Li
CPC classification number: F02M53/043 , F02M55/004 , F02M55/008 , F02M55/025 , F02M57/023 , F02M61/14
Abstract: A fuel injector assembly for an engine system includes a fuel pressurization mechanism, a fuel injector, and a flow-directing sleeve positioned about the fuel injector and including sealing surfaces for sealing with a cylinder head and with an injector body. Slots are formed at least in part in the sealing surfaces to direct fuel from the cylinder head into an incoming cooling passage extending to the fuel pressurization mechanism, and from an outgoing cooling fuel passage into the cylinder head.
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公开(公告)号：US11598300B2
公开(公告)日：2023-03-07
申请号：US17176268
申请日：2021-02-16
Applicant: Caterpillar Inc.
Inventor： Jonathan W. Anders , Bobby John , Robert Campion
Abstract: Operating an engine includes injecting a first charge of liquid fuel using a first set of nozzle outlets in a fuel injector, and injecting a second charge of liquid fuel using a second set of nozzle outlets in a fuel injector. The first charge is autoignited in a first engine cycle, and the second charge is autoignited in a second engine cycle, and may be used to pilot ignite a charge of gaseous fuel. Operating the engine further includes limiting errors in targeting of the second charge of liquid fuel caused by transitioning the engine from a first combination to a second combination of speed, load, and boost, by varying an injection pressure of the liquid fuel from the first engine cycle to the second engine cycle.
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公开(公告)号：US20210164428A1
公开(公告)日：2021-06-03
申请号：US17176268
申请日：2021-02-16
Applicant: Caterpillar Inc.
Inventor： Jonathan W. Anders , Bobby John , Robert Campion
Abstract: Operating an engine includes injecting a first charge of liquid fuel using a first set of nozzle outlets in a fuel injector, and injecting a second charge of liquid fuel using a second set of nozzle outlets in a fuel injector. The first charge is autoignited in a first engine cycle, and the second charge is autoignited in a second engine cycle, and may be used to pilot ignite a charge of gaseous fuel. Operating the engine further includes limiting errors in targeting of the second charge of liquid fuel caused by transitioning the engine from a first combination to a second combination of speed, load, and boost, by varying an injection pressure of the liquid fuel from the first engine cycle to the second engine cycle.
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公开(公告)号：US10989153B2
公开(公告)日：2021-04-27
申请号：US16106665
申请日：2018-08-21
Applicant: Caterpillar Inc.
Inventor： Jonathan W. Anders , Bobby John , Robert Campion
Abstract: Operating an engine includes injecting a first charge of liquid fuel using a first set of nozzle outlets in a fuel injector, and injecting a second charge of liquid fuel using a second set of nozzle outlets in a fuel injector. The first charge is autoignited in a first engine cycle, and the second charge is autoignited in a second engine cycle, and may be used to pilot ignite a charge of gaseous fuel. Operating the engine further includes limiting errors in targeting of the second charge of liquid fuel caused by transitioning the engine from a first combination to a second combination of speed, load, and boost, by varying an injection pressure of the liquid fuel from the first engine cycle to the second engine cycle.
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公开(公告)号：US20200063704A1
公开(公告)日：2020-02-27
申请号：US16107199
申请日：2018-08-21
Applicant: Caterpillar Inc.
Inventor： Jonathan W. Anders , Bobby John , Robert Campion
Abstract: A liquid fuel injector for a fuel system in an internal combustion engine includes two injection control valves for controlling two outlet checks. A common nozzle supply cavity is fluidly connected to an inlet passage and supplies each of the two sets of nozzle outlets opened and closed by the outlet checks. A first nozzle outlet set forms a narrower spray angle and has a first combination of outlet number and outlet size, and a second nozzle outlet set forms a wider spray angle and has a second combination of outlet number and outlet size. The first nozzle outlet set has a greater steady flow than the second nozzle outlet set.
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