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    EXHAUST VALVE ASSEMBLY FOR A TWO-STROKE INTERNAL COMBUSTION ENGINE AND METHOD FOR CLEANING SAME
    1.
    发明公开
    EXHAUST VALVE ASSEMBLY FOR A TWO-STROKE INTERNAL COMBUSTION ENGINE AND METHOD FOR CLEANING SAME 审中-公开
    用于两冲程内燃机的排气阀组件及清洁方法

    公开(公告)号：EP3199787A1

    公开(公告)日：2017-08-02

    申请号：EP17153728.5

    申请日：2017-01-30

    申请人： BRP-Rotax GmbH & Co. KG

    发明人： MATHEIS, Andreas ,  DOPPELBAUER, Markus ,  SCHALLAUER, Martin ,  BERGER, Christian ,  ROLAND, Gunther

    IPC分类号： F02D13/02 ,  F02B25/20 ,  F02B33/04 ,  F01L1/38 ,  F01L5/20

    CPC分类号： F01L3/20 ,  F01L1/02 ,  F01L1/38 ,  F01L3/205 ,  F01L5/20 ,  F02B25/20 ,  F02B33/04 ,  F02B75/02 ,  F02B77/04 ,  F02B2075/025 ,  F02D13/0284 ,  F02D2013/0288 ,  Y02T10/18

    摘要： An exhaust valve assembly for a two-stroke internal combustion engine has a valve actuator, and a two-part valve having a primary and secondary valves defining first and second decompression passages respectively. The primary valve is operatively connected to the valve actuator. The primary valve is in first, second and third primary valve positions when the valve actuator is in first, second and third actuator positions respectively. The secondary valve is in a first secondary valve position when the valve actuator is in the first or the second actuator position and in a second secondary valve position when the valve actuator is in the third actuator position. The first and second valve decompression passages fluidly communicate with each other when the valve actuator is in the second actuator position, and are fluidly separate from each other when the valve actuator is the first or the third actuator position.

    摘要翻译： 用于二冲程内燃机的排气阀组件具有阀门致动器和具有分别限定第一减压通道和第二减压通道的主阀和辅助阀的两部分阀。 主阀可操作地连接到阀门致动器。 当阀门致动器分别位于第一，第二和第三致动器位置时，主阀处于第一，第二和第三主阀位置。 当阀门致动器处于第一或第二致动器位置时，次阀门处于第一次阀门位置，当阀门致动器处于第三致动器位置时，次阀门处于第二次阀门位置。 当阀门致动器处于第二致动器位置时，第一和第二阀门减压通道彼此流体连通，并且当阀门致动器处于第一或第三致动器位置时彼此流体地分离。

    AN INTERNAL COMBUSTION ENGINE.
    3.
    发明公开
    AN INTERNAL COMBUSTION ENGINE. 失效
    VERBRENNUNGSMOTOR。

    公开(公告)号：EP0052109A4

    公开(公告)日：1982-09-28

    申请号：EP81900996

    申请日：1980-05-28

    申请人： FINLEY DONALD GENE

    发明人： FINLEY DONALD GENE

    IPC分类号： F01B7/12 ,  F01L5/20 ,  F02B3/06 ,  F02B25/08 ,  F02B41/00 ,  F02B75/02 ,  F02B75/04 ,  F02B75/18 ,  F02B75/28 ,  F02B75/32 ,  F02D13/02 ,  F02D15/02

    CPC分类号： F02D13/028 ,  F01B7/12 ,  F01L5/20 ,  F02B3/06 ,  F02B25/08 ,  F02B75/04 ,  F02B75/28 ,  F02B2075/025 ,  F02B2075/1808 ,  F02D15/02 ,  Y02T10/18

    摘要： A two-cycle, two-cylinder (10), (12) opposed piston (14), (16), (18), (20) internal combustion engine having means for continuously adjusting the stroke of the engine and the blocking and unblocking of intake (88), (92), transfer (90) and exhaust (102) ports with respect to each other as the engine is operating. Corresponding pistons of each cylinder are connected to respective ends of pivotally mounted rocker arms (24) or (24'), and (34) so that pistons in one cylinder move oppositely with respect to pistons in the other cylinder, the piston side surfaces alternately blocking and unblocking transfer and exhaust ports. In a particular embodiment, the rocker arms (24') are each fitted with a flat spring (154) or (154') positioned so as to be in contact with the end of the associated piston rod and deflecting to allow the pistons to move apart at an increased speed in advance of the crankshaft. The springs (154) and (154') are secured and limited so as to provide increasing spring moment as the springs are deflected. Two connecting rods (48) and (59) are provided, one of which is attached at one end to each of the rocker arms at a pivot point distal from the rocker arm pivotal mount (26) or (36) and at the other end to a rotatably mounted eccentric (52), one end of which is formed into a shaft (54) containing a power drive gear (56) operatively connected to a drive shaft (60), the eccentric being rotated due to an up and down motion of the connecting rod. Means (47), (50) and (63), (64) are provided for continuously varying the attachment points of the connecting rods to the rocker arms, thereby altering the allowable pivotable movement of the rocker arm and consequently the stoke or maximum spaced-apart distance of the pistons in each cylinder. Also, the shaft portion (54) of one of the eccentrics forms twisted splines on its outer surface, its associated power drive gear being (56) adapted to mesh with the twisted splines so that the gear is rotated as it is longitudinally displaced along the shaft. Means (104), (106) are provided for continuously displacing this gear thereby changing the angular relationship between the two rocker arms, and thus the relative positioning of the pistons contained in each cylinder. This changed position alters the blocking of the exhaust ports with respect to the unblocking of the transfer ports. Remote combustion chamber (128), (129) and a means (136), (138) for ensuring that the volume in which combustion takes place remains substantially constant during the combustion process.

    摘要翻译： 一种双循环双缸（10），（12）对置活塞（14），（16），（18），（20）内燃机，其具有用于连续调节发动机行程和闭锁和解锁 （88），（92），转移（90）和排气（102）端口相对于彼此的位置。 每个气缸的相应活塞连接到枢轴安装的摇臂（24）或（24'）和（34）的相应端部，以便一个气缸中的活塞相对于另一个气缸中的活塞相反地移动，活塞侧表面交替地 阻塞和畅通传输和排气口。 在特定实施例中，摇臂（24'）各自配备有平板弹簧（154）或（154'），其定位成与相关联的活塞杆的端部接触并偏转以允许活塞移动 在曲轴前进行加速。 弹簧（154）和（154'）被固定和限制，以便在弹簧偏转时提供增加的弹簧力矩。 设置两个连杆（48）和（59），其中一个连杆的一端在远离摇臂枢转支架（26）或（36）的枢转点处连接到每个摇臂，并且在另一端 涉及一种可旋转安装的偏心轮（52），其一端形成一个轴（54），该轴包含一个与驱动轴（60）可操作地连接的动力驱动齿轮（56），该偏心轮由于上下运动 的连杆。 装置（47），（50）和（63），（64）用于连续改变连接杆与摇臂的连接点，由此改变摇臂的可允许的枢转运动，并因此改变行程或最大间隔 - 每个气缸中活塞的距离。 而且，其中一个偏心轮的轴部分（54）在其外表面上形成扭曲花键，其相关联的动力驱动齿轮（56）适于与扭转的花键啮合，从而齿轮在其沿着 轴。 装置（104），（106）用于连续移动该齿轮，由此改变两个摇臂之间的角度关系，并因此改变容纳在每个气缸中的活塞的相对位置。 这种改变的位置改变了排气口相对于传送口解锁的阻塞。 远程燃烧室（128），（129）和装置（136），（138）用于确保在燃烧过程中发生燃烧的体积基本上保持恒定。

    A TWO-STROKE COMBUSTION ENGINE
    4.
    发明公开
    A TWO-STROKE COMBUSTION ENGINE 有权
    二冲程燃烧发动机

    公开(公告)号：EP3158177A1

    公开(公告)日：2017-04-26

    申请号：EP15736775.6

    申请日：2015-06-16

    申请人： Novotny, Zdenek

    发明人： Novotny, Zdenek

    IPC分类号： F02B23/06 ,  F02F3/24 ,  F01L5/06 ,  F01L5/20

    摘要： A two-stroke combustion engine is designed for rinsing via the combustion space (15) in the engine piston (3) through the centre of the cylinder (2) towards the top dead centre and subsequent forcing of the exhaust gas to the walls of the cylinder (2) and the exhaust. This manner of cylinder (2) rinsing is enabled by the cylinder {2) perimeter being fitted with exhaust windows (8) that lead to the exhaust channel (7) in the cylinder block (12) and rinse windows (10) positioned under them that are preferably angularly offset with regard to the exhaust windows (8) by a half of their spacing and lead to the rinse channel (11) in the cylinder block (12). The piston (3) includes combustion space (15) and inclined rinse openings (9) distributed on its perimeter and leading to the combustion space (15). When the piston (3) is in the bottom end centre, the rinse openings (9) interconnect the combustion space (15) with the rinse windows (10). The spark-ignition version of the engine may be provided with a bushing (16) mounted in a rotary way on the cylinder (2) and provided with throttling exhaust and rinse openings (17) and (18) whose rotation may change the timing of the exhaust and rinse of the cylinder.

    摘要翻译： 二冲程内燃机被设计用于经由发动机活塞（3）中的燃烧空间（15）通过气缸（2）的中心朝向上死点冲洗，并随后迫使废气到达 汽缸（2）和排气装置。 汽缸（2）的周边装配有通向汽缸体（12）中的排气通道（7）的排气窗（8）和位于其下方的冲洗窗口（10） 它们优选相对于排气窗（8）以其间距的一半成角度地偏移并且通向气缸体（12）中的冲洗通道（11）。 活塞（3）包括燃烧空间（15）和在其周边分布并通向燃烧空间（15）的倾斜冲洗开口（9）。 当活塞（3）位于底端中心时，冲洗开口（9）将燃烧空间（15）与冲洗窗口（10）互连。 火花点火型式的发动机可以设置有旋转地安装在汽缸（2）上并且设置有节流排气和冲洗开口（17）和（18）的衬套（16），其旋转可以改变 汽缸的排气和冲洗。

    RECIPROCATING MACHINE WITH TWO SUB-CHAMBERS
    5.
    发明公开
    RECIPROCATING MACHINE WITH TWO SUB-CHAMBERS 有权
    HUBKOLBENMASCHINE MIT ZWEI HILFSKAMMERN

    公开(公告)号：EP1112442A4

    公开(公告)日：2006-06-14

    申请号：EP99947083

    申请日：1999-09-01

    申请人： GALBRAITH ENG PTY LTD

    发明人： GALBRAITH PETER AFTON

    IPC分类号： F01L5/06 ,  F02B19/14 ,  F01L5/10 ,  F01L5/20 ,  F01P3/20 ,  F02B3/06 ,  F02B17/00 ,  F02B19/16 ,  F02B23/02 ,  F02B23/04 ,  F02B23/06 ,  F02B25/14 ,  F02B31/00 ,  F02F1/24 ,  F02M61/16

    CPC分类号： F02B31/00 ,  F01L5/10 ,  F01L5/20 ,  F01L2101/02 ,  F02B3/06 ,  F02B17/00 ,  F02B19/14 ,  F02B19/165 ,  F02B23/0639 ,  F02B25/14 ,  F02B2023/0612 ,  F02B2275/14 ,  F02B2275/16 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/146

    摘要： A reciprocating machine includes a housing (12) and piston means (20) that are cyclically relatively displaceable along an axis (11) to define a variable volume working chamber (50). There is further provided air inlet means and fuel inlet means (100) admitting air and fuel to the working chamber for forming an ignitable mixture after compression of the air therein, and means to exhaust combustion products from the working chamber. The variable volume working chamber (50) includes at least two sub-chambers, a combustion chamber (54) and a main chamber (52) mutually displaced on the axis (11) and in communication at a cross section (53) at which gas in the combustion chamber (54) may expand at least partially laterally as it flows from the combustion chamber (54) into the main chamber (52). The air admission means, the exhaust means and the chambers (52, 54) are arranged so that a swirl of gas is generated and maintained about the axis (11) in both chambers (52, 54) during operation of the machine. The combustion chamber (54) is sealed and defined laterally and at one end by integral heat resistant and/or low thermal conductivity wall structure (40) having a surrounding heat insulation jacket (48) and associated heat dissipation means (47, 49) arranged so that, during operation of the machine, the surfaces (42a, 44) of the wall structure bounding the combustion chamber are maintained at a temperature which is substantially higher than wall surfaces (31) bounding the main chamber (52).

    摘要翻译： 往复运动机器包括壳体（12）和活塞装置（20），其沿着轴线（11）循环地相对移位以限定可变容积的工作室（50）。 进一步设置有空气入口装置和燃料入口装置（100），其将空气和燃料引入工作室，用于在其中压缩空气之后形成可点燃的混合物，以及从工作室排出燃烧产物的装置。 可变容积工作室（50）包括至少两个子室，在轴线（11）上相互位移并且在横截面（53）处连通的燃烧室（54）和主室（52） 在燃烧室（54）中，当燃烧室（54）从燃烧室（54）流入主室（52）时，至少部分可横向膨胀。 空气进入装置，排气装置和室（52,54）被布置成使得在机器的操作期间在两个室（52,54）中围绕轴线（11）产生并保持气体涡流。

    METHOD FOR CLEANING AN EXHAUST VALVE OF A TWO-STROKE INTERNAL COMBUSTION ENGINE
    7.
    发明公开
    METHOD FOR CLEANING AN EXHAUST VALVE OF A TWO-STROKE INTERNAL COMBUSTION ENGINE 审中-公开

    公开(公告)号：EP3486449A1

    公开(公告)日：2019-05-22

    申请号：EP18214143.2

    申请日：2017-01-30

    申请人： BRP-Rotax GmbH & Co. KG

    发明人： MATHEIS, Andreas ,  DOPPELBAUER, Markus ,  SCHALLAUER, Martin ,  BERGER, Christian ,  ROLAND, Gunther

    IPC分类号： F02B25/20 ,  F02B33/04 ,  F01L1/38 ,  F01L3/20 ,  F01L5/20 ,  F02D13/02

    摘要： A method for cleaning an exhaust valve (100) of a two-stroke internal combustion engine (10) comprising: requesting (206) an exhaust valve cleaning cycle if at least one of a first condition and a second condition is satisfied; initiating (212) the exhaust valve cleaning cycle if at least one of a third condition and a fourth condition is satisfied; and aborting (218) the exhaust valve cleaning cycle if at least one of the at least one of the third and fourth conditions is no longer satisfied; the first condition (202) being a time elapsed since a previous cleaning cycle has been completed being greated than a predetermined time; the second condition (204) being a rate of opening of the exhaust valve being less than predetermined rate; the third condition (208,214) being a throttle valve being closed; and the fourth condition (210,216) being an engine speed being less than a predetermined engine speed.

    FREE PISTON ENGINE
    8.
    发明公开
    FREE PISTON ENGINE 审中-公开

    公开(公告)号：EP3137754A4

    公开(公告)日：2017-12-06

    申请号：EP15782938

    申请日：2015-04-22

    申请人： YAAKOBY SHAUL

    发明人： YAAKOBY SHAUL

    IPC分类号： F02B71/00 ,  F01L5/20 ,  F01L11/00 ,  F01L11/02 ,  F02B71/04 ,  F02B75/00

    CPC分类号： F02B71/00 ,  F01B11/001 ,  F01L21/02 ,  F02B75/002

    摘要： An internal combustion engine for providing a linear reciprocating movement of an output shaft along a longitudinal axis. The engine has a double sided cylinder that is bounded by an engine head at each side of the cylinder. An exhaust unit is positioned at each side of the cylinder. A piston is positioned within a cylinder inner space and freely slides with respect to the cylinder along the longitudinal axis. Two piston rods are aligned with the longitudinal axis. Each piston rod is connected at a different side of the piston. Each of the piston rods has exhaust openings.