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公开(公告)号：US08925518B1
公开(公告)日：2015-01-06
申请号：US14215450
申请日：2014-03-17
申请人： Woodward, Inc.
CPC分类号： F02B19/10 , F02B19/00 , F02B19/1023 , F02B19/1057 , F02B19/108 , F02B19/1085 , F02B19/12 , F02B19/18 , F02B2201/064 , F02D19/08 , F02D41/0025 , F02D41/0027 , F02D41/403 , F02M25/10 , F02M37/0064 , F02P13/00 , Y02T10/125 , Y02T10/36
摘要： A system has an engine. The engine has a combustion chamber, a pre-combustion chamber apart from the combustion chamber, and an opening spanning between the combustion chamber and the pre-combustion chamber. The engine also has a first fuel supply system adapted to supply liquid fuel to the pre-combustion chamber and a second fuel supply system adapted to supply a second, different fuel to the combustion chamber. In certain instances, an oxygen supply system supplies oxygen into the prechamber.
摘要翻译： 一个系统有一个引擎。 发动机具有燃烧室，与燃烧室隔开的预燃室和跨过燃烧室和预燃烧室之间的开口。 发动机还具有适于将液体燃料供应到预燃烧室的第一燃料供应系统和适于向燃烧室供应第二不同燃料的第二燃料供应系统。 在某些情况下，氧气供应系统将氧气供应到预燃室中。
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公开(公告)号：US12071906B2
公开(公告)日：2024-08-27
申请号：US17935495
申请日：2022-09-26
申请人： Woodward, Inc.
CPC分类号： F02D41/0025 , F01N3/10 , F02D41/009 , F02D41/402 , F02D2041/389 , F02D2200/024
摘要： The subject matter of this specification can be embodied in, among other things, a method performed in connection with an internal combustion engine, and the method including receiving a pressure signal from a combustion chamber pressure sensor during a first range of volumes, the first range corresponding to a portion of a compression phase, the received pressure being a first pressure, providing, based on the received pressure signal, a first pulse of fuel at a first position of the body during the compression phase, and providing, based on the received pressure signal a second pulse of fuel at a second position of the body during the compression phase.
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公开(公告)号：US20220136465A1
公开(公告)日：2022-05-05
申请号：US17452534
申请日：2021-10-27
申请人： Woodward, Inc.
IPC分类号： F02M26/36 , F02M26/14 , F02M26/17 , F02M35/10 , F01N13/10 , F02M26/22 , F02M26/06 , B01F5/06 , B01F3/02
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：US11174809B1
公开(公告)日：2021-11-16
申请号：US17122183
申请日：2020-12-15
申请人： Woodward, Inc.
IPC分类号： F02D41/18
摘要： The method includes the following features. A first pressure upstream of a throttle is received. A temperature upstream of the throttle is received. A second pressure within an intake manifold is received. An engine speed is received. An air flow is estimated based on the received first pressure, the received temperature, the received second pressure, and the received engine speed. Estimating the air flow includes determining one or more models to use for calculating air flow based on the received first pressure and the received second pressure. The models include a throttle flow model, a port flow model, or both.
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公开(公告)号：US20210180537A1
公开(公告)日：2021-06-17
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：US20210079835A1
公开(公告)日：2021-03-18
申请号：US16572474
申请日：2019-09-16
申请人： Woodward, Inc.
发明人： Domenico Chiera , Charles Brennecke , Samuel James McCreery , Jeffrey Carlson , Suraj Nair , Gregory James Hampson
摘要： The subject matter of this specification can be embodied in, among other things, a method of igniting an air/fuel mixture in an internal combustion engine includes receiving an air/fuel mixture into a pre-combustion chamber, the pre-combustion chamber enclosing a portion of an igniter, igniting the air/fuel mixture in in the pre-combustion chamber with the igniter to produce a flame, directing the flame to eject the pre-combustion chamber through a collection of passages in a wall of the pre-combustion chamber, toward a peripheral wall of a main combustion chamber of the internal combustion engine, igniting, by the flame, air/fuel mixture in the main combustion chamber adjacent the peripheral wall, and then igniting air/fuel mixture in the main combustion chamber in a central region of the main combustion chamber with a propagating flame front of the ignited air/fuel mixture or a portion of the directed flame adjacent the peripheral wall.
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47.发明授权公开(公告)号：US10458346B2
公开(公告)日：2019-10-29
申请号：US15968447
申请日：2018-05-01
申请人： WOODWARD, INC.
摘要： A system for controlling an internal combustion engine has an in-cylinder pressure sensor, a crank angle sensor and a controller coupled to receive inputs from the pressure sensor and crank angle sensor. The controller is configured to convert the cylinder pressure input into a combustion metric indicative of the combustion occurring in the measured cylinder and control fuel input and timing into the engine based on the combustion metric. The controller samples the in-cylinder pressure sensor at a high frequency during critical combustion events and at a lower frequency during the non-critical cylinder conditions.
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公开(公告)号：US10316803B2
公开(公告)日：2019-06-11
申请号：US15714699
申请日：2017-09-25
申请人： Woodward, Inc.
摘要： An exhaust gas recirculation mixer includes a convergent nozzle in a flow path from an air inlet of the mixer to an outlet of the mixer. The convergent nozzle is oriented converging toward the outlet of the mixer. The nozzle accelerates the flow to high velocity, which is released as a free-jet. The mixer includes an exhaust gas housing having an exhaust gas inlet into an interior of the exhaust gas housing, and a convergent-divergent nozzle having an air-fuel-exhaust gas inlet in fluid communication to receive fluid flow from the convergent nozzle (i.e., the free-jet), the interior of the exhaust gas housing, and a fuel supply into the mixer.
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公开(公告)号：US20190093604A1
公开(公告)日：2019-03-28
申请号：US15714699
申请日：2017-09-25
申请人： Woodward, Inc.
摘要： An exhaust gas recirculation mixer includes a convergent nozzle in a flow path from an air inlet of the mixer to an outlet of the mixer. The convergent nozzle is oriented converging toward the outlet of the mixer. The nozzle accelerates the flow to high velocity, which is released as a free-jet. The mixer includes an exhaust gas housing having an exhaust gas inlet into an interior of the exhaust gas housing, and a convergent-divergent nozzle having an air-fuel-exhaust gas inlet in fluid communication to receive fluid flow from the convergent nozzle (i.e., the free-jet), the interior of the exhaust gas housing, and a fuel supply into the mixer.
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公开(公告)号：US20180080429A1
公开(公告)日：2018-03-22
申请号：US15827858
申请日：2017-11-30
申请人： Woodward, Inc.
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.
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