SYSTEMS AND METHODS FOR TRANSIENT CONTROL OF A FREE-PISTON ENGINE
    21.
    发明申请
    SYSTEMS AND METHODS FOR TRANSIENT CONTROL OF A FREE-PISTON ENGINE 审中-公开
    自由活塞发动机瞬态控制系统与方法

    公开(公告)号:US20160032820A1

    公开(公告)日:2016-02-04

    申请号:US14784243

    申请日:2014-04-15

    发明人: Zongxuan Sun Ke Li

    IPC分类号: F02B71/00 F02D41/00

    摘要: 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.

    摘要翻译: 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。

    Internal combustion engine , improvements in design and efficiency
    22.
    发明授权
    Internal combustion engine , improvements in design and efficiency 有权
    内燃机,设计和效率的提高

    公开(公告)号:US08985071B2

    公开(公告)日:2015-03-24

    申请号:US13068879

    申请日:2011-05-24

    CPC分类号: F02B75/282 F01B3/08

    摘要: 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.

    摘要翻译: 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。

    FREE-PISTON ENGINE
    23.
    发明申请
    FREE-PISTON ENGINE 有权
    自由活塞发动机

    公开(公告)号:US20140283791A1

    公开(公告)日:2014-09-25

    申请号:US14235713

    申请日:2012-08-08

    申请人: Ken Naitoh

    发明人: Ken Naitoh

    IPC分类号: F02B71/00

    摘要: 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.

    摘要翻译: 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 。

    Opposed free piston linear alternator
    24.
    发明授权
    Opposed free piston linear alternator 有权
    对置自由活塞线性交流发电机

    公开(公告)号:US08616162B2

    公开(公告)日:2013-12-31

    申请号:US13277308

    申请日:2011-10-20

    IPC分类号: F02B71/00

    摘要: 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.

    摘要翻译: 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。

    METHODS AND SYSTEMS FOR FREE PISTON ENGINE CONTROL
    25.
    发明申请
    METHODS AND SYSTEMS FOR FREE PISTON ENGINE CONTROL 审中-公开
    自由活塞发动机控制的方法和系统

    公开(公告)号:US20130298874A1

    公开(公告)日:2013-11-14

    申请号:US13855363

    申请日:2013-04-02

    IPC分类号: F02B71/00

    摘要: 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.

    摘要翻译: 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。

    Free-Piston Engine for Generating Combined Heat and Power
    26.
    发明申请
    Free-Piston Engine for Generating Combined Heat and Power 审中-公开
    用于产生热电联产的自由活塞发动机

    公开(公告)号:US20130247877A1

    公开(公告)日:2013-09-26

    申请号:US13845740

    申请日:2013-03-18

    申请人: HEATGEN LIMITED

    发明人: David Waggott

    IPC分类号: F02B71/00

    摘要: 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.

    摘要翻译: 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。

    Device for conversion of thermodynamic energy into electrical energy
    27.
    发明授权
    Device for conversion of thermodynamic energy into electrical energy 失效
    将热力学能量转化为电能的装置

    公开(公告)号:US08432047B2

    公开(公告)日:2013-04-30

    申请号:US12517035

    申请日:2007-11-29

    申请人: Gerhard Schilling

    发明人: Gerhard Schilling

    摘要: 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.

    摘要翻译: 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。

    High-efficiency linear combustion engine
    28.
    发明授权
    High-efficiency linear combustion engine 有权
    高效线性内燃机

    公开(公告)号:US08402931B2

    公开(公告)日:2013-03-26

    申请号:US13463724

    申请日:2012-05-03

    IPC分类号: F02B71/00

    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.

    摘要翻译: 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。

    Digital Hydraulic Opposed Free Piston Engines and Methods
    29.
    发明申请
    Digital Hydraulic Opposed Free Piston Engines and Methods 有权
    数字液压相对自由活塞发动机和方法

    公开(公告)号:US20130025570A1

    公开(公告)日:2013-01-31

    申请号:US13554123

    申请日:2012-07-20

    IPC分类号: F02B71/00

    CPC分类号: F02B71/045

    摘要: Digital hydraulic opposed free piston internal combustion engines having a pair of free pistons in a pair of cylinders defining a combustion chamber above each free piston. The pair of free pistons is arranged to move within the pair of cylinders with parallel axes of free piston motion, and preferably co-linear axes of free piston motion. At least one hydraulic plunger is under each free piston with each hydraulic plunger in a respective hydraulic cylinder. The hydraulic cylinders are coupled to electronically controlled hydraulic cylinder valving. A controller controls the electronically controlled hydraulic cylinder valving to control the pair of free pistons to have substantially equal and opposite motions.

    摘要翻译: 数字液压相对的自由活塞内燃机在一对气缸中具有一对自由活塞,在每个自由活塞上限定燃烧室。 一对自由活塞被布置成在自由活塞运动的平行轴线和自由活塞运动的优选共线轴线的一对气缸内移动。 每个自由活塞下面至少有一个液压柱塞,每个液压柱塞在相应的液压缸中。 液压缸连接到电控液压缸阀门。 控制器控制电子控制液压缸阀门,以控制一对自由活塞具有基本相等和相反的运动。

    Fuel supply and combustion chamber systems for fastener-driving tools
    30.
    发明授权
    Fuel supply and combustion chamber systems for fastener-driving tools 有权
    用于紧固件驱动工具的燃料供应和燃烧室系统

    公开(公告)号:US08347832B2

    公开(公告)日:2013-01-08

    申请号:US12289633

    申请日:2008-10-31

    申请人: Joseph S. Adams

    发明人: Joseph S. Adams

    IPC分类号: F02B71/00

    CPC分类号: B25C1/08

    摘要: A fuel supply and combustion chamber system for a portable power tool, such as, for example, a fastener-driving tool, wherein the fuel supply and combustion chamber system can utilize liquid or gaseous fuels. The fuel supply and combustion chamber system can comprise multiple combustion chambers for achieving predetermined combustion and power output characteristics. In addition, the fuel supply and combustion chamber system can utilize portioning valve structures for providing predetermined amounts of either a gaseous or liquid fuel into the portable power tool combustion chamber.

    摘要翻译: 用于便携式电动工具的燃料供应和燃烧室系统,例如紧固件驱动工具,其中燃料供应和燃烧室系统可以利用液体或气体燃料。 燃料供应和燃烧室系统可以包括多个燃烧室,以实现预定的燃烧和功率输出特性。 此外,燃料供应和燃烧室系统可以利用分配阀结构,以将预定量的气态或液体燃料提供到便携式电动工具燃烧室中。