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公开(公告)号：US11125180B2
公开(公告)日：2021-09-21
申请号：US17188346
申请日：2021-03-01
申请人： Woodward, Inc.
摘要： A method of controlling combustion in an internal combustion engine includes measuring parameters of combustion in a cylinder of the engine during a combustion phase of the cylinder, after igniting an air/fuel charge in the cylinder, and calculating the heat release of combustion in the cylinder based on the measured parameters. An auto-ignition event of the air/fuel charge is identified based on the calculated heat release, and, based at least in part on the identified auto-ignition event, at least one of ignition timing in the cylinder for the next combustion phase of the cylinder or an amount of exhaust gas supplied to the cylinder for the next combustion phase of the cylinder is controlled to cause an auto-ignition event of the air/fuel charge in the next combustion phase to shift toward a specified crank angle.
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公开(公告)号：US09890690B2
公开(公告)日：2018-02-13
申请号：US15288734
申请日：2016-10-07
申请人： Woodward, Inc.
IPC分类号： F02B19/18 , F02B19/12 , F02P13/00 , F02M21/02 , F02B43/00 , F02M61/18 , F02P5/152 , F02P15/00 , F02M57/06
CPC分类号： F02B19/18 , F02B19/12 , F02B43/00 , F02M21/0275 , F02M57/06 , F02M61/1813 , F02P5/152 , F02P13/00 , F02P15/006 , Y02T10/125 , Y02T10/32
摘要： An injector-igniter assembly includes a passive prechamber and a fuel injector. In an internal combustion engine, fuel is directly injected into a combustion chamber to mix with air in the combustion chamber. Embodiments enable filing the prechamber at different air-fuel-ratio than the main chamber without directly filling the prechamber with fuel. The prechamber has jet apertures in fluid communication with the combustion chamber. In operation, fuel is injected directly into the combustion chamber though nozzles to form a cloud adjacent to openings into the prechamber. Subsequently, mixed fuel and air is ingested into the prechamber from the combustion chamber and ignited. The degree of mixing prior to ingestion into the prechamber can be controlled using different nozzles configurations. Ignited gaseous fuel and air is expelled from the prechamber through the jet apertures and into the combustion chamber as a flaming jet with a core of gaseous fuel.
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公开(公告)号：US09653886B2
公开(公告)日：2017-05-16
申请号：US14664431
申请日：2015-03-20
申请人： Woodward, Inc.
CPC分类号： H01T13/06 , F02B19/1004 , F02B19/1095 , F02B19/12 , F02P13/00 , F02P15/00 , H01T13/20 , H01T13/32 , H01T13/54 , Y02T10/125
摘要： A system for igniting a mixture in an internal combustion engine includes an elongate plug body generally residing around a center longitudinal axis and adapted to couple to the internal combustion engine. The system also includes a first ignition body residing about an end of the plug body and a second ignition body adjacent the first ignition body to define a flame kernel initiation gap between the second ignition body and the first ignition body. The system also includes a transversely extending cap at the end of the plug body that is longitudinally spaced from the plug body by a support comprising a leg that is radially offset from the center longitudinal axis, the support defining a peripheral opening around a perimeter of the cap where a total radially-facing area of the support is less than a total area of the peripheral opening.
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4.发明申请Pre-Chamber Spark Plug With Tubular Electrode And Method of Manufacturing Same 审中-公开带管状电极的前室火花塞及其制造方法相同公开(公告)号：US20150361945A1
公开(公告)日：2015-12-17
申请号：US14833291
申请日：2015-08-24
申请人： Woodward, Inc.
IPC分类号： F02P15/10
CPC分类号： F02P15/10 , H01T13/54 , Y10T29/49002
摘要： A pre-chamber spark plug that includes a shell, and an end cap attached to the shell. Additionally, the pre-chamber spark plug includes an insulator disposed within the shell. In a particular embodiment, a center electrode has a first portion surrounded by the insulator, and a second portion that extends from the insulator into a pre-chamber. The pre-chamber defined by the shell and end cap. In a further embodiment, a ground electrode is attached to the shell. In particular embodiments, the ground electrode is tubular in shape and includes an inner spark surface ring spaced in surrounding relation to the center electrode to create a spark gap, an outer ring attached to the shell, and a plurality of rounded spokes connecting the inner and outer rings. In a particular embodiment, the ground and center electrodes accommodate attachment of precious metal alloys to increase electrode surface life.
摘要翻译： 一种包括外壳和预先安装在外壳上的端盖的预充电器火花塞。 此外，预燃烧器火花塞包括设置在壳体内的绝缘体。 在特定实施例中，中心电极具有由绝缘体包围的第一部分和从绝缘体延伸到预充电室的第二部分。 由壳体和端盖限定的预制室。 在另一实施例中，接地电极附接到外壳。 在特定实施例中，接地电极是管状形状并且包括内部火花表面环，该内部火花表面环围绕中心电极间隔开以产生火花间隙，附接到壳体的外环以及连接内部和 外圈。 在特定实施例中，接地和中心电极适应贵金属合金的附着以增加电极的表面寿命。
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公开(公告)号：US20140190437A1
公开(公告)日：2014-07-10
申请号：US13736424
申请日：2013-01-08
申请人： Woodward, Inc.
IPC分类号： F02P19/02
CPC分类号： F02P19/02 , F02B9/10 , F02B19/02 , F02B19/1095 , F02P19/00 , Y02T10/125
摘要： An engine has an ignition source in a combustion chamber of the engine. An inner housing is provided that includes one or more jet apertures and defines an inner chamber containing the ignition source. An outer housing (or pre-chamber) is provided that includes one or more jet apertures in communication with the main combustion chamber and defines an outer chamber containing the inner housing.
摘要翻译： 发动机在发动机的燃烧室中具有点火源。 提供内壳，其包括一个或多个喷射孔，并且限定包含点火源的内室。 提供外壳（或预制室），其包括与主燃烧室连通的一个或多个喷射孔，并限定包含内壳体的外室。
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公开(公告)号：US20240186547A1
公开(公告)日：2024-06-06
申请号：US18530070
申请日：2023-12-05
申请人： Woodward, Inc.
发明人： Yi Han , Gregory James Hampson
IPC分类号： H01M8/0444 , G01R31/378 , G01R31/392 , H01M8/04089 , H01M8/04111 , H01M8/04119 , H01M8/04223 , H01M8/0438 , H01M8/04537 , H01M8/04746 , H01M8/04992
CPC分类号： H01M8/04455 , G01R31/378 , G01R31/392 , H01M8/04097 , H01M8/04111 , H01M8/04156 , H01M8/04231 , H01M8/04388 , H01M8/04395 , H01M8/04574 , H01M8/04761 , H01M8/04992 , H01M2008/1095
摘要： The subject matter of this specification can be embodied in, among other things, a method that includes determining an electrical current output of a fuel cell stack configured to generate electrical current from hydrogen provided in a hydrogen recirculation loop, determining an efficiency level of the fuel cell stack, determining a nitrogen diffusion rate based on the determined electrical current output and the determined efficiency level, and determining a nitrogen concentration in the hydrogen recirculation loop based on the determined nitrogen diffusion rate.
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公开(公告)号：US11686278B2
公开(公告)日：2023-06-27
申请号：US17452534
申请日：2021-10-27
申请人： Woodward, Inc.
IPC分类号： F02M26/36 , F02M26/22 , F02M26/10 , F02M26/42 , F02M26/06 , F02M26/14 , F02M26/17 , B01F25/433 , F02M35/10
CPC分类号： F02M26/36 , B01F25/4335 , F02M26/06 , F02M26/10 , F02M26/14 , F02M26/17 , F02M26/22 , F02M26/42 , F02M35/10222 , F02M35/10262
摘要： The subject matter of this specification can be embodied in, among other things, a gas mixer that includes a convergent-divergent nozzle comprising a convergent portion and a divergent portion and defining a first gas flow path, an air housing comprising an air inlet configured to supply air to the first gas flow path upstream of the convergent-divergent nozzle, a gas housing defining a second gas flow path and including a first gas inlet configured to receive a secondary gas and allow the secondary gas into a second gas flow path, and a gas nozzle positioned parallel to and centrally within the first gas flow path in a convergent portion of the convergent-divergent nozzle, the gas nozzle configured to supply the secondary gas to the first gas flow path upstream of the divergent portion.
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公开(公告)号：US10995705B2
公开(公告)日：2021-05-04
申请号：US16269735
申请日：2019-02-07
申请人： Woodward, Inc.
发明人： Daniel B. Mastbergen , Domenico Chiera , Gregory James Hampson , Yi Han , James Po-Chang Chiu , Doug Leone , Henry David Gemmill Knutzen , Samuel James McCreery
摘要： A convergent nozzle is in a mixer housing and in a flow path from an air inlet of the mixer to an outlet of the mixer. A convergent-divergent nozzle is in the mixer housing and includes an air-exhaust gas inlet in fluid communication to receive fluid flow from the convergent nozzle and from the interior of the exhaust gas housing. A first nozzle module is configured to be received in the mixer housing and, when received in the mixer housing, define at least a portion of the convergent nozzle or the convergent-divergent nozzle. A second nozzle module is configured to be received in the mixer housing separate from the first nozzle module. The second nozzle module, when received in the mixer housing, is configured to define at least a portion of the convergent or the convergent-divergent nozzle. The second nozzle module has a different flow characteristic than the first nozzle module.
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公开(公告)号：US10935449B2
公开(公告)日：2021-03-02
申请号：US15971957
申请日：2018-05-04
申请人： WOODWARD, INC.
IPC分类号： G01L23/22 , F02D19/06 , F02D19/08 , F02D35/02 , F02D41/00 , F02D41/22 , F02D41/30 , F02D19/10 , F02B77/08
摘要： A method of detecting uncontrolled combustion in an internal combustion engine includes sampling in-cylinder pressure sensor configured to measure pressure in a cylinder of the engine and generate a pressure signal, calculating a combustion intensity metric based on the pressure signal, determining a parameter describing how close the engine is to an uncontrolled combustion condition based on the combustion intensity metric, and controlling a substitution rate of a first fuel and a second fuel based on one or more of the parameter and the combustion intensity metric.
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公开(公告)号：US10907532B2
公开(公告)日：2021-02-02
申请号：US15332718
申请日：2016-10-24
申请人： Woodward, Inc.
IPC分类号： F02B19/12 , F02P13/00 , F02P15/00 , F02P21/02 , F02P23/04 , F02B19/16 , H01T13/32 , H01T13/54 , F02P9/00
摘要： A pre-chamber spark plug that includes a shell. Additionally, the pre-chamber spark plug includes an insulator disposed within the shell. In a particular embodiment, a center electrode has a first portion surrounded by the insulator, and a second portion that extends from the insulator into a pre-chamber. The pre-chamber defined by the shell. In a further embodiment, a ground electrode is attached to the insulator. In particular embodiments, the ground electrode is tubular in shape and includes an inner spark surface ring spaced in surrounding relation to the center electrode to create a spark gap, an outer ring attached to the shell, and a plurality of rounded spokes connecting the inner and outer rings. In a particular embodiment, the ground and center electrodes accommodate attachment of precious metal alloys to increase electrode surface life. In another embodiment the ground electrode and insulator is coaxial to the center electrode.
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