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公开(公告)号：US10404199B2
公开(公告)日：2019-09-03
申请号：US16248693
申请日：2019-01-15
申请人： Etagen, Inc.
摘要： Systems and methods are provided for braking a translator of a linear multiphase electromagnetic machine. The system detects a fault event, and in response to detecting the fault event, causes the translator to brake using an electromagnetic technique. Braking includes causing the translator to stop reciprocating, by applying a force opposing an axial motion, which may occur within one cycle, or over many cycles. The fault event may include, for example, a fault associated with an encoder, a controller, an electrical component, a communications link, a phase, or a subsystem. The system includes a power electronics system configured to apply current to the phases. The system may use position information, current information, operating parameters, or a combination thereof to brake. Alternatively, the system need not use position information, current information, and operating parameters, and may brake the translator independent of such information.
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公开(公告)号：US10359002B2
公开(公告)日：2019-07-23
申请号：US15820240
申请日：2017-11-21
申请人： ETAGEN, INC.
发明人： Matt Svrcek
摘要： The present disclosure provides an open-faced piston with a circumferential groove into which a piston ring assembly is arranged. Openings at the bottom of the circumferential groove and between a front land of the open-faced piston and the piston face are provided. The openings are arranged to allow for a combustion reaction to propagate through the volume defined between the bottom of the piston ring assembly and the piston face such that at least a portion of an air and fuel mixture located in that volume is reacted.
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公开(公告)号：US10006401B2
公开(公告)日：2018-06-26
申请号：US13725988
申请日：2012-12-21
申请人： Etagen, Inc.
发明人： John Lawler , Matt Svrcek
摘要： A piston engine may include a clearance gap between a piston assembly and a cylinder. The piston may be configured to translate in a bore of the cylinder. The clearance gap between the piston assembly and the bore may be actively or passively controlled. A control system may provide one or more adjustments based on, for example, a detected temperature, pressure, flow rate, work metric, and/or other indicator. The adjustments may include, for example, adjusting a cylinder liner, adjusting a flow through a bearing element, adjusting a coolant flow, adjusting a heat pipe property, and/or other adjustments. One or more auxiliary systems may be used to provide the adjustments.
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公开(公告)号：US09004038B2
公开(公告)日：2015-04-14
申请号：US13340538
申请日：2011-12-29
申请人： Matt Svrcek , John Lawler , Shannon Miller
发明人： Matt Svrcek , John Lawler , Shannon Miller
CPC分类号： F16J1/09
摘要： A piston engine may include a heat pipe capable of transferring heat away from a portion of the piston engine such as a combustion section. The heat pipe may be included as part of a piston assembly, a cylinder, or both. The heat pipe may be filled with a suitable heat pipe fluid that may undergo a phase change such as, for example, water, ethanol, ammonia, sodium, other fluids or combinations thereof. Boiling and condensing of the fluid within the heat pipe may utilize the latent heat of the fluid during heat transfer. Multiple heat pipes may be used in some instances.
摘要翻译： 活塞发动机可以包括能够从诸如燃烧部分的活塞发动机的一部分传递热量的热管。 热管可以包括作为活塞组件，气缸或两者的一部分。 热管可以填充有可能经历相变的合适的热管流体，例如水，乙醇，氨，钠，其它流体或其组合。 在热管内的流体的沸腾和冷凝可以在传热期间利用流体的潜热。 在某些情况下可以使用多个热管。
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5.发明授权Linear free piston combustion engine with indirect work extraction via gas linkage 有权线性自由活塞内燃机，通过气联动间接提取公开(公告)号：US08997699B2
公开(公告)日：2015-04-07
申请号：US13028053
申请日：2011-02-15
申请人： Matthew J. Roelle , Adam P. Simpson
发明人： Matthew J. Roelle , Adam P. Simpson
CPC分类号： F02B71/04 , F02B75/285
摘要： Various embodiments of the present invention are directed toward a linear free piston combustion engine with indirect work extraction via gas linkage, comprising: a cylinder with two opposed free pistons disposed therein that form a combustion section in a center of the cylinder, each free piston comprising a front face facing the combustion section and a back face facing the opposite direction; two opposed extractor pistons disposed in their own cylinders at opposite ends of the free piston cylinder, each extractor piston comprising a front face facing the combustion section and a back face facing the opposite direction; and two gas linkages, each gas linkage comprising a volume sealed between the back face of a free piston and the front face of an extractor piston; wherein each extractor piston is connected to a rotary electromagnetic machine.
摘要翻译： 本发明的各种实施例涉及一种具有通过气动连接进行间接工作提取的线性自由活塞燃烧发动机，其包括：一个设置在其中的两个相对的自由活塞的气缸，其形成在气缸中心的燃烧部分，每个自由活塞包括 面向燃烧部分的前表面和面向相反方向的后表面; 两个相对的提取器活塞在自由活塞气缸的相对端设置在它们自己的气缸中，每个提取器活塞包括面向燃烧部分的前表面和面向相反方向的后表面; 和两个气体连接件，每个气体连接件包括密封在自由活塞的背面和抽出器活塞的前表面之间的体积; 其中每个提取器活塞连接到旋转电磁机器。
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公开(公告)号：US08899192B2
公开(公告)日：2014-12-02
申请号：US13725987
申请日：2012-12-21
申请人： EtaGen, Inc.
发明人： Matt Svrcek , John Lawler , Shannon Miller
IPC分类号： F02B71/00
CPC分类号： F16J1/09
摘要： A piston engine may include a heat pipe capable of transferring heat away from a portion of the piston engine such as a combustion section. The heat pipe may be included as part of a piston assembly, a cylinder, or both. The heat pipe may be filled with a suitable heat pipe fluid that may undergo a phase change such as, for example, water, ethanol, ammonia, sodium, other fluids or combinations thereof. Boiling and condensing of the fluid within the heat pipe may utilize the latent heat of the fluid during heat transfer. Multiple heat pipes may be used in some instances.
摘要翻译： 活塞发动机可以包括能够从诸如燃烧部分的活塞发动机的一部分传递热量的热管。 热管可以包括作为活塞组件，气缸或两者的一部分。 热管可以填充有可能经历相变的合适的热管流体，例如水，乙醇，氨，钠，其它流体或其组合。 在热管内的流体的沸腾和冷凝可以在传热期间利用流体的潜热。 在某些情况下可以使用多个热管。
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公开(公告)号：US10975966B2
公开(公告)日：2021-04-13
申请号：US16100017
申请日：2018-08-09
申请人： EtaGen, Inc.
发明人： Jodie Prudhomme , Matt Svrcek
摘要： The present disclosure provides a sealing ring assembly having a ring and one or more gap cover elements, configured to seal a high-pressure region from a lower pressure region of a piston and cylinder device. The ring may be segmented, and the gap cover elements may engage with interfaces between the ring segments. The gap cover elements are configured to move radially outward and wear as the ring wears. The gap cover elements may include, for example, wedge-shaped features that engage with corresponding wedge recesses in the interfaces. The sealing ring assembly may include a high-pressure boundary and a low-pressure boundary. As the sealing ring wears, the gap cover elements stay engaged with the interfaces, so that ring gaps do not form on the low pressure boundary.
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公开(公告)号：US10465795B2
公开(公告)日：2019-11-05
申请号：US16060000
申请日：2018-08-09
申请人： EtaGen, Inc.
发明人： Matt Svrcek , David Degraaff
摘要： The present disclosure provides a sealing ring assembly with one or more piston-integrated gap cover features, configured to seal a high-pressure region from a relatively lower pressure region of a piston and cylinder device. The sealing ring assembly may include two rings which each may include one or more ring segments. The one or more gap-cover features, which may be in the form of protrusions in the piston ring groove, may engage with corresponding flat sections of the ring segments. As the sealing ring wears, the gap-cover features may stay engaged with the ring segments, thereby maintaining a seal.
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公开(公告)号：US10408150B2
公开(公告)日：2019-09-10
申请号：US16175358
申请日：2018-10-30
申请人： EtaGen, Inc.
发明人： Matthew Roelle , Christopher Gadda
摘要： Various embodiments of the present disclosure are directed towards free-piston combustion engines. As described herein, a method and system are provided for displacing a free-piston assembly to achieve a desired engine performance by repeatedly determining position-force trajectories over the course of a propagation path and effecting the displacement of the free-piston assembly based, at least in part, on the position-force trajectory. In a dual-piston assembly free-piston engine, synchronization of the two piston assemblies is provided.
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公开(公告)号：US10024231B2
公开(公告)日：2018-07-17
申请号：US15390431
申请日：2016-12-23
申请人： EtaGen, Inc.
发明人： Adam Simpson , Shannon Miller , Matt Svrcek
IPC分类号： F02B71/04 , F01B11/00 , F02B63/04 , F02B71/00 , F02B25/08 , F02B75/28 , H02K7/18 , H02K35/02 , F01B7/02 , F02B1/12
摘要： Various embodiments of the present invention are directed toward a linear combustion engine, comprising: a cylinder having a cylinder wall and a pair of ends, the cylinder including a combustion section disposed in a center portion of the cylinder; a pair of opposed piston assemblies adapted to move linearly within the cylinder, each piston assembly disposed on one side of the combustion section opposite the other piston assembly, each piston assembly including a spring rod and a piston comprising a solid front section adjacent the combustion section and a gas section; and a pair of linear electromagnetic machines adapted to directly convert kinetic energy of the piston assembly into electrical energy, and adapted to directly convert electrical energy into kinetic energy of the piston assembly for providing compression work during the compression stroke.
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