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    Free piston assembly and method for controlling a free piston assembly
    1.
    发明授权
    Free piston assembly and method for controlling a free piston assembly 有权
    自由活塞组件和控制自由活塞组件的方法

    公开(公告)号：US08601988B2

    公开(公告)日：2013-12-10

    申请号：US12686235

    申请日：2010-01-12

    申请人： Juergen Graef

    发明人： Juergen Graef

    IPC分类号： F02B71/00

    CPC分类号： H02K7/1884 ,  F01B11/007 ,  F01B11/08 ,  F02B63/04 ,  F02B63/041 ,  F02B71/045

    摘要： Free piston assembly, comprising at least one piston accommodating device, at least one piston device having a first piston surface and a second piston surface facing away from the first piston surface, which is moveable in a linear manner in the corresponding piston accommodating device, and an expansion space which is arranged in the piston accommodating device and delimited by the first piston surface, wherein the piston device is arranged to be driven by the action of a medium which expands in the expansion space, wherein a resilience space arranged in the at least one piston accommodating device is delimited by the second piston surface, and wherein the resilience space is connected to at least one pre-compression chamber in fluidic manner.

    摘要翻译： 自由活塞组件，包括至少一个活塞容纳装置，至少一个具有第一活塞表面和第二活塞表面的活塞装置，所述第一活塞表面和第二活塞表面背离所述第一活塞表面，所述第二活塞表面可以在相应的活塞收纳装置中以线性方式移动， 膨胀空间，其布置在所述活塞容纳装置中并且由所述第一活塞表面限定，其中所述活塞装置被布置成由在所述膨胀空间中膨胀的介质的作用驱动，其中至少布置在所述弹性空间中的弹性空间 一个活塞容纳装置由第二活塞表面限定，并且其中弹性空间以流体方式连接到至少一个预压缩室。

    Total flow liquid piston engine
    3.
    发明授权
    Total flow liquid piston engine 失效
    总流量液体活塞发动机

    公开(公告)号：US6112522A

    公开(公告)日：2000-09-05

    申请号：US189186

    申请日：1998-11-10

    申请人： Harlow Wright

    发明人： Harlow Wright

    IPC分类号： F01B11/08 ,  F01B21/00 ,  F01B29/08

    CPC分类号： F01B11/08 ,  F01B21/00

    摘要： This invention uses a body force to trap the liquid component of a fluid in local potential minimums in a continuous cavity in an expander. Shaping of the cavity traps the vapor components of the fluid between these "liquid pistons". In the external combustion embodiment, the cavities have a continuously increasing cross section. Therefore, the surface pressure of the fluid generates an unbalanced force on the containing expander. The cavities are shaped such that components of the unbalanced forces combine to generate a torque, which rotates the expanders. In the preferred embodiment, some of this rotational force is fed back by gearing to revolve the expanders around a rotor axis. This revolving generates a centrifugal body force on the fluid in the expander cavities. In the internal combustion embodiment, the expander stages are preceded by decreasing cross section stages which compress the fuel air mixture. The mixture is ignited and expands in the following stages. This expansion allows external work to be done.

    摘要翻译： 本发明使用身体力将液体的液体成分捕获在膨胀器的连续空腔中的局部电位最小值。 空腔的形状将这些“液体活塞”之间的流体的蒸气分量捕获。 在外燃实施例中，空腔具有不断增加的横截面。 因此，流体的表面压力在容纳膨胀机上产生不平衡的力。 空腔成形为使得不平衡力的部件组合以产生使膨胀器旋转的扭矩。 在优选实施例中，这种旋转力中的一些通过传动装置反馈以围绕转子轴线旋转膨胀机。 这种旋转在膨胀器腔体中的流体上产生离心体力。 在内燃实施例中，膨胀机级之前是减少压缩燃料空气混合物的横截面段。 混合物在以下阶段被点燃和膨胀。 这种扩展允许外部工作完成。

    CONTROL SIGNALS FOR FREE-PISTON ENGINES
    6.
    发明申请
    CONTROL SIGNALS FOR FREE-PISTON ENGINES 审中-公开

    公开(公告)号：US20170350248A1

    公开(公告)日：2017-12-07

    申请号：US15607937

    申请日：2017-05-30

    申请人： Regents of the University of Minnesota

    发明人： Zongxuan Sun ,  Chen Zhang ,  Keyan Liu

    IPC分类号： F01B11/02 ,  F02B71/04 ,  F02B71/06 ,  F02B71/02

    CPC分类号： F01B11/02 ,  F01B11/08 ,  F02B71/02 ,  F02B71/045

    摘要： The subject matter of this specification can be embodied in, among other things, a method for operating a hydraulic free piston engine includes receiving, at an engine controller for a hydraulic free piston engine, an energy parameter that is representative of an amount of fluid energy to be output by the engine, and a measured fluid pressure value of a fluid load of the engine, determining a piston trajectory of a piston within a hydraulic chamber of the engine, determining a fuel volume value and a servo valve actuation parameter, based on the energy parameter and the measured fluid pressure value, providing a fuel control signal to a fuel control device of the engine based on the fuel volume value, and providing, based on the servo valve actuation parameter and the piston trajectory, a servo valve control signal to a servo valve.

    Hydraulic engine piston
    7.
    发明授权
    Hydraulic engine piston 失效
    液压发动机活塞

    公开(公告)号：US4085710A

    公开(公告)日：1978-04-25

    申请号：US711404

    申请日：1976-08-03

    申请人： Sundar Savarimuthu

    发明人： Sundar Savarimuthu

    IPC分类号： F01B9/04 ,  F01B11/08 ,  F02B71/04 ,  F02B75/32 ,  F02B71/00 ,  F15B21/00

    CPC分类号： F01B9/04 ,  F01B11/08 ,  F02B71/045 ,  F02B75/32

    摘要： A two piston hydraulic fluid separated internal combustion cylinder system utilizing a cylinder having fuel inlet ports, ignition means, a viewing window, a filling plug; a first piston, hydraulic fluid cushion and a smaller piston which may be connected to a crankshaft.

    摘要翻译： 一种双活塞液压流体分离的内燃缸系统，利用具有燃料入口，点火装置，观察窗，填充塞的气缸; 第一活塞，液压液垫和可连接到曲轴的较小活塞。

    Device for examining the piston rings in free-floating piston engines
    8.
    发明授权
    Device for examining the piston rings in free-floating piston engines 失效
    用于检查自由浮动活塞发动机活塞环的装置

    公开(公告)号：US3714781A

    公开(公告)日：1973-02-06

    申请号：US3714781D

    申请日：1971-12-08

    申请人： GRUNDIG EMV

    发明人： RAETIGER W

    IPC分类号： F01B9/04 ,  F01B11/08 ,  F15B7/00

    CPC分类号： F01B11/08 ,  F01B9/04

    摘要： A device is provided for use in examining the piston rings of free-floating piston engines wherein power from the pistons is transmitted to the engine''s power output shaft through a hydrostatic motion converter system. The device includes piston detector means associated with each of the pistons in the engine for respectively producing a continuous output signal corresponding to the momentary or instantaneous position of their associated piston. A shaft detector is located adjacent the engine''s output shaft and is adapted to produce an output signal corresponding to the momentary or instantaneous angular position of the shaft. Independent comparator means are operatively connected between each of the piston detectors and the shaft detector for comparing the signals produced thereby and generating separate synchronization error signals for each of the pistons. Fluid control means is operatively connected to the comparator means for selectively adding liquid to or removing liquid from the hydrostatic converter system in response to the synchronizing signal so that the synchronization error between the pistons and the shaft is reduced. An adjustable signal generator for selectively producing output signals corresponding to predetermined output shaft positions, is selectively connected to the comparator means by a switch so that when the signal generator is connected to the comparators, the latter generate predetermined synchronization error signals to operate the fluid control means and thereby move the pistons to predetermined positions independently of the actual position of the engine''s output shaft.

    摘要翻译： 提供了一种用于检查自由浮动活塞发动机的活塞环的装置，其中来自活塞的动力通过静液力运动转换器系统传递到发动机的动力输出轴。 该装置包括与发动机中的每个活塞相关联的活塞检测器装置，用于分别产生对应于其相关活塞的瞬时或瞬时位置的连续输出信号。 轴检测器位于发动机的输出轴附近，并且适于产生对应于轴的瞬时或瞬时角位置的输出信号。 独立比较器装置可操作地连接在每个活塞检测器和轴检测器之间，用于比较由此产生的信号并且为每个活塞生成单独的同步误差信号。 流体控制装置可操作地连接到比较器装置，用于响应于同步信号选择性地将液体添加到静液压转换器系统中或从液压静力转换器系统中去除液体，使得活塞和轴之间的同步误差减小。 用于选择性地产生对应于预定输出轴位置的输出信号的可调信号发生器通过开关选择性地连接到比较器装置，使得当信号发生器连接到比较器时，后者产生预定的同步误差信号以操作流体控制 并且从而将活塞移动到独立于发动机的输出轴的实际位置的预定位置。