公开(公告)号：US07407153B2

公开(公告)日：2008-08-05

申请号：US10574247

申请日：2004-09-29

申请人： Stephen Brian Glover

发明人： Stephen Brian Glover

IPC分类号： F02M7/24

CPC分类号： F02B25/22 ,  F02D9/1045 ,  F02M13/046 ,  Y10S261/01

摘要： A carburettor for a two stroke engine includes a flow duct including rich and lean flow passages (160, 150) in parallel, through which, in use, air flows in a flow direction and which are separated by substantially planar partition (130). At least one fuel jet (5) communicates with the rich passage (160) and the partition includes an aperture (140) towards which the fuel jet is directed. A substantially planar butterfly valve (120) is received in the aperture so as to be pivotable between a first position, in which the flow duct is substantially closed and the aperture is substantially open, and a second position, in which the flow duct is substantially open and the aperture is substantially closed. The upstream half of the aperture (140) is defined by upstream semi-annular seating ledge (148) affording an upstream seating surface (151), which is engaged by one of the surfaces of the butterfly valve (120), when it is in the second position, and a first end surface (153), which extends between the upstream seating surface and that surface of the partition which is directed towards the lean passage. The downstream half of the aperture (140) is defined by a downstream semi annular seating ledge (149) affording a downstream seating surface (151), which is engaged by the upper surface of the butterfly valve, when it is in the second position, and a second end surface (161), which extends between the downstream seating surface and that surface of the partition which is directed towards the rich passage. At least one of the upstream semi annular seating ledge, the downstream semi-annular seating and the valve are so shaped that, in use, a pressure differential is created between the rich and lean passages at the upstream and/or downstream edges of the valve, the pressure in the lean passage being higher than that in the rich passage.

摘要翻译： 用于二冲程发动机的化油器包括流动管道，其包括平行的富有和贫的流动通道（160,150），在使用中，空气在流动方向上流动并且由基本上平面的分隔件（130）分开。 至少一个燃料喷嘴（5）与富通道（160）连通，并且分隔件包括孔（140），燃料喷嘴朝向该孔。 基本上平面的蝶形阀（120）被容纳在孔中，以便可在第一位置和第二位置之间枢转，第一位置和第二位置之间，流动管道基本上封闭，第一位置基本上封闭，第二位置， 打开并且孔径基本上封闭。 孔（140）的上游一半由上游半环形座架（148）限定，提供一个上游座面（151），当其处于 第二位置和第一端面（153），该第一端面在上游支座表面和指向该通道的分隔件的表面之间延伸。 孔140的下游半部由下游的半环形安装凸缘（149）限定，该下部半环形安装凸缘（149）在其处于第二位置时提供下游就座表面（151），该下游座面由蝶形阀的上表面接合， 以及第二端表面（161），其在下游就座表面和指向富通道的分隔件的表面之间延伸。 上游半环形座椅凸缘中的至少一个，下游半环形座椅和阀门的形状使得在使用中在阀门的上游和/或下游边缘处的富和贫通道之间产生压力差 ，贫气通道中的压力高于富通道的压力。

公开(公告)号：US06789385B2

公开(公告)日：2004-09-14

申请号：US10467848

申请日：2004-02-13

申请人： Stephen Brian Glover

发明人： Stephen Brian Glover

IPC分类号： F01N300

CPC分类号： F01N3/2046 ,  F01N1/02 ,  F01N3/2885 ,  F01N3/34 ,  F01N13/08 ,  Y02T10/26

摘要： A reciprocating piston engine (2) includes an exhaust system comprising an exhaust pipe (8) which communicates with a silencer (10), whose upstream portion (11) is divergent in the direction of gas flow through it, an oxidising catalyst (12) and an air supply pipe (14) communicating with the exhaust pipe at a position upstream of the catalyst and silencer. The air supply pipe (14) includes a Reed valve (16) which is adapted to open under a pressure differential to permit air to flow into the exhaust pipe. In order to maximise the air flow into the exhaust pipe the effect of pressure pulses within the exhaust pipe is utilised and for this purpose 3L2−(2L1+L2) is equal to ±0.25 to 0.5 m, wherein is the distance from the junction of the exhaust pipe (8) measured from a first intersection point at which the axes of the exhaust pipe (8) and the air supply pipe (14) intersect, to a point midway along the length in the flow direction of the said upstream portion (11) of the silencer (10) and L2 is the length of the air supply pipe (14) from the Reed valve (16) to the said first intersection point.

摘要翻译： 往复式活塞发动机（2）包括排气系统，该排气系统包括与消音器（10）连通的排气管（8），其上游部分（11）沿着气流的方向发散;氧化催化剂（12） 以及在催化剂和消音器的上游位置与排气管连通的供气管（14）。 供气管（14）包括一个簧片阀（16），其适于在压力差下打开以允许空气流入排气管。 为了最大化进入排气管的气流，利用排气管内的压力脉冲的影响，为此，3L2-（2L1 + L2）等于±0.25至0.5m，其中距离 从排气管（8）和供气管（14）的轴线相交的第一交点测量的排气管（8）沿着所述上游部分的流动方向的长度的中途 消声器（10）的长度（11），L2是从簧片阀（16）到所述第一交点的空气供给管（14）的长度。

公开(公告)号：US08695951B2

公开(公告)日：2014-04-15

申请号：US12601824

申请日：2008-05-23

申请人： Kristjan Björn Omarsson ,  Stephen Brian Glover ,  David James Caley ,  Morten Kronstedt

发明人： Kristjan Björn Omarsson ,  Stephen Brian Glover ,  David James Caley ,  Morten Kronstedt

IPC分类号： F02M7/02

CPC分类号： F02D11/04 ,  F02M3/10 ,  F02M7/24 ,  F02M19/04

摘要： A carburettor includes a primary air passage (19), an adjustable throttle valve (8) situated within the primary air passage, a fuel supply nozzle (28) communicating with the primary air passage and connected to a fuel metering valve for varying the amount of fuel discharged through the nozzle. The fuel metering valve includes an elongate sleeve (32) movably accommodating an elongate valve member (33). The sleeve and valve member define a fuel inlet space (35). A fuel inlet (37) communicates with the fuel inlet space. A fuel outlet (39) passes through the wall of the sleeve (32) and communicates with the fuel supply nozzle (28). A portion of the outer surface of the valve member (33) is so profiled that the valve member (33) is movable relative to the sleeve (32) such that the area of communication between the fuel inlet space (35) and the outlet (39) varies progressively between a maximum and a minimum value.

摘要翻译： 化油器包括主空气通道（19），位于主空气通道内的可调节节流阀（8），与主空气通道连通并连接到燃料计量阀的燃料供给喷嘴（28），用于改变 燃油经喷嘴排出。 燃料计量阀包括可移动地容纳细长阀构件（33）的细长套筒（32）。 套管和阀构件限定燃料入口空间（35）。 燃料入口（37）与燃料入口空间连通。 燃料出口（39）穿过套筒（32）的壁并与燃料供给喷嘴（28）连通。 阀构件（33）的外表面的一部分是如此轮廓，使得阀构件（33）相对于套筒（32）可移动，使得燃料入口空间（35）和出口 39）在最大值和最小值之间逐渐变化。

公开(公告)号：US08641015B2

公开(公告)日：2014-02-04

申请号：US13531790

申请日：2012-06-25

申请人： Kristjan Björn Omarsson ,  Stephen Brian Glover ,  David James Caley ,  Morten Kronstedt

发明人： Kristjan Björn Omarsson ,  Stephen Brian Glover ,  David James Caley ,  Morten Kronstedt

IPC分类号： F02M7/14

CPC分类号： F02D11/04 ,  F02M3/10 ,  F02M7/24 ,  F02M19/04

摘要： A carburettor including a primary air passage, an adjustable throttle valve situated within the primary air passage, a fuel supply nozzle communicating with the primary air passage and connected to a fuel metering valve for varying the amount of fuel discharged through the nozzle and a rotary input shaft adapted to be connected to an engine speed control member and which is connected to the throttle valve to move the throttle valve between open and closed positions. The rotary input shaft is also connected to a carriage to move the carriage, the carriage carrying at least one elongate inclined ramp which extends in the direction of movement of the carriage and which is engaged by a follower connected to the valve member. Rotation of the input shaft results in movement of the throttle valve and in movement of the carriage and thus of the elongate ramp, wherein the follower is moved transverse to the length of the ramp and the valve member of the fuel metering valve is thus also moved.

摘要翻译： 一种化油器，包括主空气通道，位于主空气通道内的可调节节流阀，与主空气通道连通并连接到燃料计量阀的燃料供应喷嘴，用于改变通过喷嘴排出的燃料量和旋转输入 轴适于连接到发动机速度控制构件，并连接到节流阀，以将节流阀在打开位置和关闭位置之间移动。 旋转输入轴还连接到滑架以移动滑架，滑架承载至少一个细长的倾斜斜面，其沿着滑架的运动方向延伸并且由连接到阀构件的随动件接合。 输入轴的旋转导致节流阀的移动和滑架以及因此的细长斜面的移动，其中从动件横向于斜坡的长度移动，并且燃料计量阀的阀构件因此也被移动 。

公开(公告)号：US20130161843A1

公开(公告)日：2013-06-27

申请号：US13531790

申请日：2012-06-25

申请人： Kristjan Bjorn OMARSSON ,  Stephen Brian Glover ,  David James Caley ,  Morten Kronstedt

发明人： Kristjan Bjorn OMARSSON ,  Stephen Brian Glover ,  David James Caley ,  Morten Kronstedt

IPC分类号： F02M9/08

CPC分类号： F02D11/04 ,  F02M3/10 ,  F02M7/24 ,  F02M19/04

摘要： A carburettor including a primary air passage, an adjustable throttle valve situated within the primary air passage, a fuel supply nozzle communicating with the primary air passage and connected to a fuel metering valve for varying the amount of fuel discharged through the nozzle and a rotary input shaft adapted to be connected to an engine speed control member and which is connected to the throttle valve to move the throttle valve between open and closed positions. The rotary input shaft is also connected to a carriage to move the carriage, the carriage carrying at least one elongate inclined ramp which extends in the direction of movement of the carriage and which is engaged by a follower connected to the valve member. Rotation of the input shaft results in movement of the throttle valve and in movement of the carriage and thus of the elongate ramp, wherein the follower is moved transverse to the length of the ramp and the valve member of the fuel metering valve is thus also moved.

摘要翻译： 一种化油器，包括主空气通道，位于主空气通道内的可调节节流阀，与主空气通道连通并连接到燃料计量阀的燃料供应喷嘴，用于改变通过喷嘴排出的燃料量和旋转输入 轴适于连接到发动机速度控制构件，并连接到节流阀，以将节流阀在打开位置和关闭位置之间移动。 旋转输入轴还连接到滑架以移动滑架，滑架承载至少一个细长的倾斜斜面，其沿着滑架的运动方向延伸并且由连接到阀构件的随动件接合。 输入轴的旋转导致节流阀的移动和滑架以及因此的细长斜面的移动，其中从动件横向于斜坡的长度移动，并且燃料计量阀的阀构件因此也被移动 。

公开(公告)号：US07828272B2

公开(公告)日：2010-11-09

申请号：US11547933

申请日：2005-03-23

申请人： Stephen Brian Glover

发明人： Stephen Brian Glover

IPC分类号： F02M7/24

CPC分类号： F02D9/1015 ,  F02B17/00 ,  F02B25/22 ,  F02M13/046 ,  Y10S261/01

摘要： The carburetor (1) includes a flow duct including rich (60) and lean (50) flow passage in parallel, through which, in use, air flows in a flow direction and which are separated by a substantially planar partition (30), at least one fuel jet 5 communicating with the rich passage (60), the partition (30) including an aperture (40) towards which the fuel jet (5) is directed, and a substantially planar butterfly valve (20) being received in the aperture (40) so as to be pivotable between a first position, in which the flow duct is substantially closed and the aperture (40) is substantially open, and a second position, in which the flow duct is substantially open and the aperture (40) is substantially closed, the upstream half of the aperture (40) being defined by an upstream semi-annular seating ledge (48) affording an upstream seating surface which is engaged by one of the surfaces of the butterfly valve (20) when it is in the second position and a first end surface which extends between the upstream seating surface and that surface of the partition (30) which is directed towards the lean passage (50), the downstream half of the aperture (40) being defined by a down-stream semi-annular seating ledge (49) affording a downstream seating surface which is engaged by the other surface of the butterfly valve (20) when it is in the second position and a second end surface, which extends between the downstream seating surface and that surface of the partition (30) which is directed towards the rich passage.

摘要翻译： 化油器（1）包括平行流过包括富（60）和贫（50）流动通道的流动通道，在使用中，空气在流动方向上流动并且由基本上平面的隔板（30）分开， 与富通道（60）连通的至少一个燃料喷嘴（5），所述分隔件（30）包括朝向所述燃料喷嘴（5）的孔（40），以及基本上平面的蝶阀（20） （40），以便能够在第一位置和第二位置之间枢转，在第一位置和第二位置之间，第一位置和第二位置之间，流体管道基本上封闭，第一位置基本上是开口的， 基本上是闭合的，孔（40）的上游一半由上游半环形座壁凸缘（48）限定，上游半环形底座突起（48）提供上游座面，当其处于其中时，上游座表面与蝶阀（20）的一个表面接合 第二位置和在其之间延伸的第一端面 所述上游座面和所述隔板（30）的朝向所述贫通路（50）的所述表面，所述孔（40）的下游半部由下游半环形座椅凸缘（49）限定， 当所述蝶阀处于所述第二位置时与所述蝶阀（20）的另一表面接合的下游座面，以及在所述下游座面和所述隔板（30）的所述表面之间延伸的第二端面，所述第二端面指向 丰富的段落。

公开(公告)号：USRE39506E1

公开(公告)日：2007-03-13

申请号：US10226285

申请日：2002-08-13

申请人： Stephen Brian Glover

发明人： Stephen Brian Glover

IPC分类号： F02B33/04

CPC分类号： F02M13/04 ,  F02B25/22 ,  F02B33/04 ,  F02B2075/025

摘要： A crankcase scavenged two-stroke engine includes a piston reciprocably mounted in a cylinder. The cylinder wall has an exhaust port and a rear transfer port opposed thereto formed in it. The rear transfer port communicates with the interior of the crankcase via a rear transfer passage and is arranged to open before the exhaust port closes, whereby, in use, the cylinder is scavenged. An inlet duct is arranged to supply combustion air to the crankcase and a throttling valve is arranged to throttle the flow of air through the inlet duct. A carburettor is arranged to supply fuel into the inlet duct. The interior of the crankcase is divided into at least two separate crankcase volumes, a rich volume (V1, V2) and a lean volume (V3). Each crankcase volume communicates with the cylinder via a respective hole in the crankcase wall. The cylinder wall also has at least one lateral transfer port formed in it at a position between the rear transfer port and the exhaust port. The lateral transfer port is arranged to open before the exhaust port closes. The lateral transfer port communicates with the lean volume (V3) via a lateral transfer passage. The rear transfer port communicates with the rich volume (V1, V2). The inlet duct is divided over at least part of its length into at least two inlet passages, a rich passage and a lean passage, which communicate with the rich volume (V1, V2) and the lean volume (V3), respectively. The carburettor and/or the throttle valve are so constructed and arranged that, under high load operation, substantially all the fuel supplied by the carburettor is introduced into the rich passage and, under low load operation, the fuel supplied by the carburettor is introduced into both the rich and lean passages.

摘要翻译： 曲轴箱清扫的二冲程发动机包括可往复运动地安装在气缸中的活塞。 气缸壁具有形成在其中的排气口和与其相对的后部输送口。 后输送口经由后输送路与曲轴箱的内部连通，并且在排气口关闭之前被设置为打开，从而在使用中清除气缸。 入口管道布置成将燃烧空气供给到曲轴箱，并且设置节流阀以节流通过入口管道的空气流。 化油器布置成将燃料供应到入口管道中。 曲轴箱的内部分为至少两个独立的曲轴箱体积，丰富的体积（V 1，V 2）和稀释体积（V 3）。 每个曲轴箱体经由曲轴箱壁上相应的孔与气缸连通。 气缸壁还具有形成在其中的至少一个横向传送端口，位于后传送端口和排气口之间的位置。 横向传送端口被布置成在排气口关闭之前打开。 横向传送口通过侧向传送通道与稀薄体积（V 3）连通。 后传输端口与丰富的容积（V 1，V 2）连通。 入口管道至少部分长度分为至少两个入口通道，富通道和贫通道，分别与富容积（V 1，V 2）和稀量（V 3）相连通 。 化油器和/或节流阀被构造和布置成使得在高负载运行下，化油器供应的基本上所有的燃料都被引入到富通道中，并且在低负荷运行下，由化油器供应的燃料被引入 富有和贫穷的通道。

公开(公告)号：US20080303178A1

公开(公告)日：2008-12-11

申请号：US11547933

申请日：2005-03-23

申请人： Stephen Brian Glover

发明人： Stephen Brian Glover

IPC分类号： F02M19/08

CPC分类号： F02D9/1015 ,  F02B17/00 ,  F02B25/22 ,  F02M13/046 ,  Y10S261/01

摘要： The carburettor (1) includes a flow duct comprising rich (60) and lean (50) flow passages in parallel, through which, in use, air flows in a flow direction and which are separated by a substantially planar partition (30), at least one fuel jet 5 communicating with the rich passage (60), the partition (30) including an aperture (40) towards which the fuel jet (5) is directed, and a substantially planar butterfly valve (20) being received in the aperture (40) so as to be pivotable between a first position, in which the flow duct is substantially closed and the aperture (40) is substantially open, and a second position, in which the flow duct is substantially open and the aperture (40) is substantially closed, the upstream half of the aperture (40) being defined by an upstream semi-annular seating ledge (48) affording an upstream seating surface which is engaged by one of the surfaces of the butterfly valve (20) when it is in the second position and a first end surface which extends between the upstream seating surface and that surface of the partition (30) which is directed towards the lean passage (50), the downstream half of the aperture (40) being defined by a down-stream semi-annular seating ledge (49) affording a downstream seating surface which is engaged by the other surface of the butterfly valve (20) when it is in the second position and a second end surface, which extends between the downstream seating surface and that surface of the partition (30) which is directed towards the rich passage. A protrusion (180) is disposed adjacent the second end surface on the surface partition which is directed towards the lean passage. The protrusion has an upstream face which is positioned such that, in use in the second position of the valve, a stagnation pressure is generated on it.

摘要翻译： 化油器（1）包括流动管道，其包括平行的富（60）和贫（50）流动通道，在使用中，空气在流动方向上流动，并且由基本上平面的隔板（30）分开， 与富通道（60）连通的至少一个燃料喷嘴（5），所述分隔件（30）包括朝向所述燃料喷嘴（5）的孔（40），以及基本上平面的蝶阀（20） （40），以便能够在第一位置和第二位置之间枢转，在第一位置和第二位置之间，第一位置和第二位置之间，流体管道基本上封闭，第一位置基本上是开口的， 基本上是闭合的，孔（40）的上游一半由上游半环形座壁凸缘（48）限定，上游半环形底座突起（48）提供上游座面，当其处于其中时，上游座表面与蝶阀（20）的一个表面接合 第二位置和第二端面延伸 在所述上游座面和所述分隔件（30）的朝向所述贫通道（50）的表面上，所述孔（40）的下游半部由下游半环形座椅凸缘（49）限定， 当所述蝶阀处于所述第二位置时与所述蝶阀（20）的另一个表面接合的下游就座表面和在所述下游就座表面与所述分隔件（30）的所述表面之间延伸的第二端表面 走向富路。 突出物（180）被布置成邻近表面分隔件上朝向贫通道的第二端表面。 突出部具有上游面，其位于使得在阀的第二位置使用时，在其上产生停滞压力。

公开(公告)号：US20100176519A1

公开(公告)日：2010-07-15

申请号：US12601824

申请日：2008-05-23

申请人： Kristjan Björn Omarsson ,  Stephen Brian Glover ,  David James Caley ,  Morten Kronstedt

发明人： Kristjan Björn Omarsson ,  Stephen Brian Glover ,  David James Caley ,  Morten Kronstedt

IPC分类号： F02M7/24

CPC分类号： F02D11/04 ,  F02M3/10 ,  F02M7/24 ,  F02M19/04

摘要： A carburettor includes a primary air passage (19), an adjustable throttle valve (8) situated within the primary air passage, a fuel supply nozzle (28) communicating with the primary air passage and connected to a fuel metering valve for varying the amount of fuel discharged through the nozzle. The fuel metering valve comprises an elongate sleeve (32) movably accommodating an elongate valve member (33). The sleeve and valve member define a fuel inlet space (35). A fuel inlet (37) communicates with the fuel inlet space. A fuel outlet (39) passes through the wall of the sleeve (32) and communicates with the fuel supply nozzle (28). A portion of the outer surface of the valve member (33) is so profiled that the valve member (33) is movable relative to the sleeve (32) such that the area of communication between the fuel inlet space (35) and the outlet (39) varies progressively between a maximum and a minimum value.

摘要翻译： 化油器包括主空气通道（19），位于主空气通道内的可调节节流阀（8），与主空气通道连通并连接到燃料计量阀的燃料供给喷嘴（28），用于改变 燃油经喷嘴排出。 燃料计量阀包括可移动地容纳细长阀构件（33）的细长套筒（32）。 套管和阀构件限定燃料入口空间（35）。 燃料入口（37）与燃料入口空间连通。 燃料出口（39）穿过套筒（32）的壁并与燃料供给喷嘴（28）连通。 阀构件（33）的外表面的一部分是如此轮廓，使得阀构件（33）相对于套筒（32）可移动，使得燃料入口空间（35）和出口 39）在最大值和最小值之间逐渐变化。

公开(公告)号：US20090218534A1

公开(公告)日：2009-09-03

申请号：US12064354

申请日：2006-08-23

申请人： Stephen Brian Glover

发明人： Stephen Brian Glover

IPC分类号： F16K1/22

CPC分类号： F02B25/22 ,  F02B2075/025

摘要： A carburettor for a two-stroke engine includes a substantially circular section flow duct comprising rich (42) and lean (44) flow passages in parallel, through which, in use, air flows in a flow direction and which are separated by a substantially planar partition (66). At least one fuel jet (60, 61, 62) communicates with the rich passage (42) and the partition (66) includes an aperture (68) towards which the fuel jet is directed. A substantially planar butterfly valve (20) is received in the aperture (68) so as to be pivotable between a first position, in which the flow duct is substantially closed, and a second position, in which the flow duct is substantially open. The butterfly valve (20) is carried by a pivotal shaft (2) mounted to pivot about an axis which extends through the flow duct substantially diametrically. The butterfly valve (20) is connected to the pivotal shaft (2) such that, when it is in the second position, its plane is parallel to the diametral plane in which the said axis lies but is offset from it in a direction towards the rich passage. The plane of the planar partition (66) is also parallel to the said diametral plane but offset from it in a direction towards the rich passage. The cross-sectional area of the lean flow passage is therefore greater than that of the rich flow passage.

摘要翻译： 用于二冲程发动机的化油器包括基本上圆形的截面流动管道，其包括平行的富（42）和贫（44）流动通道，在使用中，空气在流动方向上流动并且通过基本平面 分区（66）。 至少一个燃料喷嘴（60,61,62）与富通道（42）连通，并且隔板（66）包括孔（68），燃料喷嘴朝向该孔。 基本上平面的蝶形阀（20）被容纳在孔（68）中，以便在流动管道基本上封闭的第一位置和流动管道基本上敞开的第二位置之间枢转。 蝶阀（20）由枢转轴（2）承载，枢转轴（2）安装成围绕基本上沿直径延伸穿过流动管道的轴线枢转。 蝶阀（20）连接到枢转轴（2），使得当其处于第二位置时，其平面平行于所述轴线所在的直径平面，但是在朝向 丰富的通道。 平面分隔物（66）的平面也平行于所述直径平面，但是在朝向富通道的方向上偏离它。 因此，贫流动通道的横截面面积大于富流道的横截面面积。