公开(公告)号：US20170016393A1

公开(公告)日：2017-01-19

申请号：US15210589

申请日：2016-07-14

Applicant: Aquarius Engines (A.M.) Ltd.

Inventor： Shaul Haim YAAKOBY

IPC: F02B71/00 ,  F16J1/00 ,  F16J9/12 ,  F02B75/00 ,  F16J1/12

CPC classification number: F01B11/001 ,  F01B7/20 ,  F01L7/02 ,  F01N3/26 ,  F01N13/10 ,  F02B1/04 ,  F02B3/06 ,  F02B71/00 ,  F02B71/04 ,  F02B75/002 ,  F02B75/30 ,  F02F1/00 ,  F02F1/06 ,  F02F1/22 ,  F02F1/24 ,  F02F3/0015 ,  F02F3/28 ,  F02M35/1015 ,  F02M61/14 ,  F16J1/005 ,  F16J1/008 ,  F16J1/12 ,  F16J7/00 ,  F16J9/06 ,  F16J9/12 ,  F16J9/20

Abstract: An engine may include a cylinder having a first combustion chamber at one end thereof and a second combustion chamber at an opposing end thereof, first and second cylinder heads at an end of the first combustion chamber and the second combustion chamber, respectively, and a double-faced piston slidably mounted within the cylinder. The piston may be configured to move in a first stroke from the first end to the second end of the cylinder. The piston and the cylinder may be configured such that the first stroke includes an expansion stroke portion during which chemical energy from combustion in the first combustion chamber is converted into mechanical power of the piston, and a momentum stroke portion during which the piston continues to move to the second end of the cylinder and gases are exchanged between the first combustion chamber and a location outside the cylinder.

Abstract translation: 发动机可以包括在其一端具有第一燃烧室的圆柱体和在其相对端处的第二燃烧室，分别在第一燃烧室和第二燃烧室的端部处的第一和第二气缸盖，以及双 表面活塞可滑动地安装在气缸内。 活塞可以构造成在第一行程中从气缸的第一端移动到第二端。 活塞和气缸可以被构造成使得第一冲程包括膨胀冲程部分，在该膨胀冲程部分期间，来自第一燃烧室中的燃烧的化学能被转换成活塞的机械动力，在该动量冲程部分期间活塞继续移动 到气缸的第二端，并且气体在第一燃烧室和气缸外部的位置之间交换。

公开(公告)号：US09388736B2

公开(公告)日：2016-07-12

申请号：US14235713

申请日：2012-08-08

Applicant: Ken Naitoh

Inventor： Ken Naitoh

IPC: F02B71/00 ,  F01L21/02 ,  F02B75/28 ,  F02B71/04 ,  F02B71/06 ,  F01B11/08

CPC classification number: F02B71/00 ,  F01B11/08 ,  F01L21/02 ,  F02B71/04 ,  F02B71/045 ,  F02B71/06 ,  F02B75/28

Abstract: The free-piston engine 10 includes a combustion space F for combusting an air-fuel mixture, a piston 12 capable of reciprocation between a most-compressed position and a most-expanded position, suction ports 14 for introducing outside air into the combustion space F, and exhaust ports 16 for directing the exhaust gas to the outside. The piston 12 extracts power by moving from the most-compressed position to the most-expanded position by a combustion explosive force and returns from the most-expanded position to the most-compressed position by the actuation of a piston drive device. Furthermore, the piston 12 opens the exhaust port 16 to the combustion space F when the piston 12 has reached the most-expanded position, whereas the piston 12 closes the exhaust ports 16 to the combustion space F when the piston is present in a different position.

Abstract translation: 自由活塞发动机10包括用于燃烧空气燃料混合物的燃烧空间F，能够在最压缩位置和最大膨胀位置之间往复运动的活塞12，用于将外部空气引入燃烧空间F的吸入口14 以及用于将排气引导到外部的排气口16。 活塞12通过燃烧爆炸力从最压缩位置移动到最大膨胀位置来提取动力，并且通过活塞驱动装置的致动从最大膨胀位置返回到最压缩位置。 此外，当活塞12达到最大膨胀位置时，活塞12将排气口16打开到燃烧空间F.而当活塞处于不同位置时，活塞12将排气口16关闭到燃烧空间F 。

公开(公告)号：US20160032820A1

公开(公告)日：2016-02-04

申请号：US14784243

申请日：2014-04-15

Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA

Inventor： Zongxuan Sun ,  Ke Li

IPC: F02B71/00 ,  F02D41/00

CPC classification number: F02B71/00 ,  F01B11/00 ,  F02D35/023 ,  F02D41/009 ,  F02D41/1448 ,  F02D45/00 ,  F02D2200/0406 ,  F02D2200/1012

Abstract: A free-piston (“FP”) engine is a type of internal combustion engine with no crankshaft, so that its piston trajectory is no longer constrained by the mechanical linkage. FP engines have a high potential in terms of energy saving given their simple structure, high modularity and high efficiency, among other attributes. One of the technical barriers that affect FP engine technology is a lack of precise piston trajectory control. For example, the presence of a transient period after a single combustion event can prevent the engine from continuous firing. The present subject matter provides a control scheme that can utilize a reference and control signal shifting technique to modify the tracking error and the control signal to reduce the transient period.

Abstract translation: 自由活塞（“FP”）发动机是一种没有曲轴的内燃机，因此其活塞轨迹不再受到机械联动的限制。 FP发动机具有结构简单，模块化程度高，效率高等优点，具有节能潜力。 影响FP发动机技术的技术障碍之一是缺乏精确的活塞轨迹控制。 例如，在单次燃烧事件之后的瞬态周期的存在可以防止发动机连续点火。 本主题提供了一种控制方案，其可以利用参考和控制信号移位技术来修改跟踪误差和控制信号以减少瞬态周期。

公开(公告)号：US08985071B2

公开(公告)日：2015-03-24

申请号：US13068879

申请日：2011-05-24

Applicant: Graeme Harold Newman

Inventor： Graeme Harold Newman

IPC: F02B25/00 ,  F02B75/20 ,  F02B33/04 ,  F02B75/22 ,  F02B71/00 ,  F02B75/28 ,  F01B3/08

CPC classification number: F02B75/282 ,  F01B3/08

Abstract: The converting of linear motion into rotational energy when using the cylinders and pistons of an internal combustion engine without the use of a crankshaft.The replacement with dual high lead cam-screws and dual cam-followers allows for the efficient use of a complete combustion stroke without the resistance from the crankshaft at top dead center, and a greatly reduced resistance for the return stroke as there is no crankshaft turning resistance at the outer limit of the piston stroke.

Abstract translation: 在不使用曲轴的情况下使用内燃机的气缸和活塞时，将线性运动转换成旋转能量。 使用双高铅凸轮螺钉和双凸轮随动件的更换可以有效地利用完整的燃烧行程，而不会在上止点处受到曲轴的阻力，并且大大降低了返回行程的阻力，因为没有曲轴转动 在活塞行程的外部极限处的阻力。

公开(公告)号：US20140283791A1

公开(公告)日：2014-09-25

申请号：US14235713

申请日：2012-08-08

Applicant: Ken Naitoh

Inventor： Ken Naitoh

IPC: F02B71/00

CPC classification number: F02B71/00 ,  F01B11/08 ,  F01L21/02 ,  F02B71/04 ,  F02B71/045 ,  F02B71/06 ,  F02B75/28

Abstract: The free-piston engine 10 includes a combustion space F for combusting an air-fuel mixture, a piston 12 capable of reciprocation between a most-compressed position and a most-expanded position, suction ports 14 for introducing outside air into the combustion space F, and exhaust ports 16 for directing the exhaust gas to the outside. The piston 12 extracts power by moving from the most-compressed position to the most-expanded position by a combustion explosive force and returns from the most-expanded position to the most-compressed position by the actuation of a piston drive device. Furthermore, the piston 12 opens the exhaust port 16 to the combustion space F when the piston 12 has reached the most-expanded position, whereas the piston 12 closes the exhaust ports 16 to the combustion space F when the piston is present in a different position.

Abstract translation: 自由活塞发动机10包括用于燃烧空气燃料混合物的燃烧空间F，能够在最压缩位置和最大膨胀位置之间往复运动的活塞12，用于将外部空气引入燃烧空间F的吸入口14 以及用于将排气引导到外部的排气口16。 活塞12通过燃烧爆炸力从最压缩位置移动到最大膨胀位置来提取动力，并且通过活塞驱动装置的致动从最大膨胀位置返回到最压缩位置。 此外，当活塞12达到最大膨胀位置时，活塞12将排气口16打开到燃烧空间F.而当活塞处于不同位置时，活塞12将排气口16关闭到燃烧空间F 。

公开(公告)号：US08616162B2

公开(公告)日：2013-12-31

申请号：US13277308

申请日：2011-10-20

Applicant: Paul M. Najt ,  Russell P. Durrett ,  Venkatesh Gopalakrishnan

Inventor： Paul M. Najt ,  Russell P. Durrett ,  Venkatesh Gopalakrishnan

IPC: F02B71/00

CPC classification number: H02K7/1884 ,  F01B11/007 ,  F01B11/02 ,  F02B33/14 ,  F02B63/041 ,  F02B71/04

Abstract: A free piston linear alternator includes a cylinder having a pair of bounce chambers, a pair of scavenging chambers, a pair of opposed pistons and a combustion chamber disposed between the opposed pistons. The pistons are axially opposed from each other and generate electric current when each of the pistons linearly translate. Each of the bounce chambers is disposed between respective ones of the pistons and a respective outer end of the cylinder and includes substantially constrained air configured to return respective ones of the pistons to a respective first position from a respective second position after combustion.

Abstract translation: 自由活塞线性交流发电机包括具有一对反弹室，一对扫气室，一对相对的活塞和设置在相对的活塞之间的燃烧室的汽缸。 活塞在每个活塞线性平移时彼此轴向相对并产生电流。 每个反弹室设置在相应的活塞和气缸的相应的外端之间，并且包括基本上受限制的空气，其构造成将相应的活塞从燃烧后的相应的第二位置返回到相应的第一位置。

公开(公告)号：US20130298874A1

公开(公告)日：2013-11-14

申请号：US13855363

申请日：2013-04-02

Applicant: Regents of the University of Minnesota

Inventor： Zongxuan Sun ,  Ke Li ,  Ali Sadighi

IPC: F02B71/00

CPC classification number: F02B71/00 ,  F02B63/06 ,  F02B71/04 ,  F02B71/045 ,  F02D35/02 ,  F02D35/023 ,  F02D35/025 ,  F02D41/1497

Abstract: Motion control of a hydraulic free-piston engine is achieved in order to enable advanced combustions such as low temperature combustion. To accomplish this, an active controller acts as a virtual crankshaft, which causes a piston to follow a reference trajectory using energy from a storage element. Given the periodic nature of free-piston engine motion, an advanced controller of the present invention is preferably of robust repetitive type that is capable of tracking periodic reference signals.

Abstract translation: 实现液压自由活塞发动机的运动控制，以实现高温燃烧，如低温燃烧。 为了实现这一点，主动控制器用作虚拟曲轴，其使活塞使用来自存储元件的能量来跟随参考轨迹。 鉴于自由活塞式发动机运动的周期性，本发明的先进控制器优选地是能够跟踪周期性参考信号的鲁棒重复类型。

公开(公告)号：US20130247877A1

公开(公告)日：2013-09-26

申请号：US13845740

申请日：2013-03-18

Applicant: HEATGEN LIMITED

Inventor： David Waggott

IPC: F02B71/00

CPC classification number: F02B71/00 ,  F01B7/02 ,  F01B11/007 ,  F02B71/045 ,  F02B75/282 ,  Y02E20/14 ,  Y02E20/16

Abstract: An apparatus is provided for generation of combined heat and power comprising an engine configured in a free-piston arrangement comprising two opposed pistons arranged in an elongated cylinder having at least one inlet port and at least one outlet port with uniflow scavenging, an electricity generator, means for harnessing heat and means for transmitting load from the engine to the electricity generator. The engine is configured to operate at close to constant volume combustion, high compression ratio, a lean fuel to air ratio and uses homogeneous charge compression ignition. The engine further comprises a synchronizing mechanical or hydraulic linkage between said two opposed pistons. A method for generating combined heat and power and a method for configuring apparatus for generating combined heat and power are also provided.

Abstract translation: 提供了一种用于产生组合的热和功率的装置，其包括配置在自由活塞装置中的发动机，包括布置在细长气缸中的两个相对的活塞，所述两个相对的活塞具有至少一个入口端口和至少一个出口端口，具有单流清扫功能，发电机， 用于利用热量的装置和用于将负载从发动机传递到发电机的装置。 发动机配置为在接近恒定体积燃烧，高压缩比，贫燃料与空气比之间运行，并使用均质充气压缩点火。 发动机还包括在所述两个相对的活塞之间的同步机械或液压联动装置。 还提供了一种用于产生组合热和功率的方法以及用于组合用于产生组合热和功率的装置的方法。

公开(公告)号：US08432047B2

公开(公告)日：2013-04-30

申请号：US12517035

申请日：2007-11-29

Applicant: Gerhard Schilling

Inventor： Gerhard Schilling

IPC: F02B63/04 ,  F03G7/08 ,  H02K7/18 ,  F01B29/10 ,  F02G1/04 ,  F02B71/00

CPC classification number: H02K7/1884 ,  F01B23/10 ,  F02B63/04 ,  F02B63/041 ,  F02B71/00 ,  Y02T10/16 ,  Y02T10/166

Abstract: A device for conversion of thermodynamic energy into electrical energy includes a piston/cylinder unit (16), a generator (18), and a controller (14). The piston/cylinder unit (16) includes a pressure cylinder (24) and a piston (26) arranged in the pressure cylinder (24) and linearly movable by a change in volume of a working medium. The generator (18) includes a coil (22) and a magnet (20). The magnet (20) is coupled to the piston (26) such that a linear movement of the piston (26) effects a linear movement of the magnet (20) within the coil (22). The controller (14) controls the working stroke of the device as a function of at least one measured process parameter.

Abstract translation: 用于将热力学能量转换成电能的装置包括活塞/气缸单元（16），发电机（18）和控制器（14）。 活塞/气缸单元（16）包括设置在压力缸（24）中的压力缸（24）和活塞（26），并可通过工作介质的体积变化而线性移动。 发电机（18）包括线圈（22）和磁体（20）。 磁体（20）联接到活塞（26），使得活塞（26）的线性运动实现磁体（20）在线圈（22）内的线性移动。 控制器（14）根据至少一个测量过程参数来控制装置的工作行程。

公开(公告)号：US08402931B2

公开(公告)日：2013-03-26

申请号：US13463724

申请日：2012-05-03

Applicant: Adam Simpson ,  Shannon Miller ,  Matt Svrcek

Inventor： Adam Simpson ,  Shannon Miller ,  Matt Svrcek

IPC: F02B71/00

CPC classification number: F02B71/04 ,  F01B7/02 ,  F01B11/001 ,  F01B11/007 ,  F02B1/12 ,  F02B25/08 ,  F02B63/041 ,  F02B71/00 ,  F02B75/282 ,  H02K7/1892 ,  H02K35/02

Abstract: 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.

Abstract translation: 本发明的各种实施例涉及一种线性内燃机，包括：具有气缸壁和一对端部的气缸，所述气缸包括设置在气缸的中心部分的燃烧部分; 一对相对的活塞组件，其适于在气缸内线性地移动，每个活塞组件设置在与另一个活塞组件相对的燃烧部分的一侧上，每个活塞组件包括弹簧杆和活塞，活塞包括与燃烧部分相邻的实心前部 和气体部分; 以及适于将活塞组件的动能直接转换为电能并且适于将电能直接转换成活塞组件的动能以在压缩冲程期间提供压缩作用的一对线性电磁机器。