公开(公告)号：US08261775B2

公开(公告)日：2012-09-11

申请号：US12367264

申请日：2009-02-06

申请人： Tamio Aihara ,  Yoshiaki Douyama ,  Shinichi Ohgane

发明人： Tamio Aihara ,  Yoshiaki Douyama ,  Shinichi Ohgane

IPC分类号： F16K31/06 ,  F16K5/10 ,  F02M11/02

CPC分类号： F02M9/12 ,  F02M23/03 ,  Y02T10/146 ,  Y10T137/87161

摘要： A scavenging valve assembly is used in a carburetor. The valve assembly includes a throttle valve and a rotary air valve. The throttle valve opens and closes an air-fuel passage. The rotary air valve opens and closes an air passage and has one or more air bore(s). When the rotary air valve begins to rotate, airflow travels through the bore(s) and the size of an opening area that airflow travels through continuously increases in size.

摘要翻译： 在化油器中使用清扫阀组件。 阀组件包括节流阀和旋转空气阀。 节流阀打开和关闭空燃料通道。 旋转空气阀打开和关闭空气通道并具有一个或多个气孔。 当旋转空气阀开始旋转时，空气流过孔，并且气流穿过的开口面积的尺寸不断增加。

公开(公告)号：US07971858B2

公开(公告)日：2011-07-05

申请号：US12119014

申请日：2008-05-12

申请人： Toshimasa Takahashi ,  Tamio Aihara ,  Jun Takano ,  Dairoku Suzuki ,  Takeshi Sakaguchi

发明人： Toshimasa Takahashi ,  Tamio Aihara ,  Jun Takano ,  Dairoku Suzuki ,  Takeshi Sakaguchi

IPC分类号： F02M7/22

CPC分类号： F02M9/02 ,  F02M9/04 ,  Y10S261/12 ,  Y10S261/38 ,  Y10S261/56

摘要： A carburetor includes a main body defining a bore, a main passage and a venturi defined within the bore, and a fuel nozzle carried by the main body and including a fuel nozzle outlet communicating with the venturi. The carburetor may also include a valve member translatable across an axis of the bore, such that in a closed state, the valve member closes the main passage but maintains the venturi at least partially open. The carburetor may also include a needle valve disposed at an end of the fuel nozzle substantially opposite of the fuel nozzle outlet to variably control flow of fuel into a fuel nozzle inlet, and a needle valve transmission may be coupled between a throttle shaft and the needle valve to convert rotation of the throttle shaft to translation of the needle valve.

摘要翻译： 化油器包括限定孔的主体，限定在孔内的主通道和文氏管，以及由主体承载并包括与文丘里管连通的燃料喷嘴出口的燃料喷嘴。 化油器还可以包括能够穿过孔的轴线平移的阀构件，使得在关闭状态下，阀构件关闭主通道，但是维持文丘里管至少部分打开。 化油器还可以包括设置在燃料喷嘴的与燃料喷嘴出口大致相对的端部处的针阀，以可变地控制燃料进入燃料喷嘴入口的流动，并且针阀传动装置可以联接在节流轴和针之间 阀将阀瓣轴的旋转转换成针阀的平移。

公开(公告)号：US06481699B1

公开(公告)日：2002-11-19

申请号：US09688674

申请日：2000-10-16

申请人： Tamio Aihara ,  Hiroki Ogasawara

发明人： Tamio Aihara ,  Hiroki Ogasawara

IPC分类号： F02M7093

CPC分类号： F02M7/08 ,  F02B2075/025 ,  F02M9/08 ,  F02M35/1019 ,  F02M35/108

摘要： An acceleration device of a carburetor for a two cycle engine with a rotary dual valve which controls air flow through both a scavenging passage and a separate air intake passage each extending through a carburetor body. The carburetor body houses a metering fuel chamber and an air reference chamber defined by a diaphragm between them. Fuel in the metering fuel chamber is discharged through a port into the air intake passage. An acceleration pump has an actuation chamber which communicates with the scavenging passage and a pump chamber which communicates with the air reference chamber and a membrane between them. During engine acceleration the membrane is displaced by a pressure introduced into the actuation chamber to forcibly send air into the air reference chamber from the pump chamber to move, the diaphragm into the metering fuel chamber, and thereby increase the fuel delivered to the air intake passage.

摘要翻译： 一种用于具有旋转双阀的双循环发动机的化油器的加速装置，其控制空气流过通过化油器主体的扫气通道和单独的进气通道。 化油器主体容纳由它们之间的隔膜限定的计量燃料室和空气参考室。 计量燃料室中的燃料通过端口排放到进气通道中。 加速泵具有与扫气通道连通的致动室和与空气参考室连通的泵室和它们之间的膜。 在发动机加速期间，膜被引入致动室的压力移动，以强制将空气从泵室送入空气参考室，以将隔膜移动到计量燃料室中，从而增加输送到进气通道的燃料 。

公开(公告)号：US07753347B2

公开(公告)日：2010-07-13

申请号：US11835849

申请日：2007-08-08

申请人： Tamio Aihara ,  Bunichi Ohtsuki ,  Kazuyuki Uenoyama

发明人： Tamio Aihara ,  Bunichi Ohtsuki ,  Kazuyuki Uenoyama

IPC分类号： F02M9/08

CPC分类号： F02M19/00 ,  F02M9/08 ,  Y10S261/01 ,  Y10T137/87153

摘要： A valve is used with a carburetor, and the carburetor therefor. The valve has a throttle valve and an air valve. The air valve defines an air bore and has a baffle disposed within the air bore. The baffle separates one section of the air bore from another section, and impedes airflow through the air bore during at least some positions of the air valve.

摘要翻译： 阀门与化油器和化油器一起使用。 该阀具有节流阀和空气阀。 空气阀限定一个空气孔，并具有设置在该空气孔内的挡板。 挡板将空气孔的一部分与另一部分分开，并且在空气阀的至少一些位置处阻止通过气孔的气流。

公开(公告)号：US20090194726A1

公开(公告)日：2009-08-06

申请号：US12367264

申请日：2009-02-06

申请人： Tamio Aihara ,  Yoshiaki Douyama ,  Shinichi Ohgane

发明人： Tamio Aihara ,  Yoshiaki Douyama ,  Shinichi Ohgane

IPC分类号： F16K5/00

CPC分类号： F02M9/12 ,  F02M23/03 ,  Y02T10/146 ,  Y10T137/87161

摘要： A scavenging valve assembly is used in a carburetor. The valve assembly includes a throttle valve and a rotary air valve. The throttle valve opens and closes an air-fuel passage. The rotary air valve opens and closes an air passage and has one or more air bore(s). When the rotary air valve begins to rotate, airflow travels through the bore(s) and the size of an opening area that airflow travels through continuously increases in size.

摘要翻译： 在化油器中使用清扫阀组件。 阀组件包括节流阀和旋转空气阀。 节流阀打开和关闭空燃料通道。 旋转空气阀打开和关闭空气通道并具有一个或多个气孔。 当旋转空气阀开始旋转时，空气流过孔，并且气流穿过的开口面积的尺寸不断增加。

公开(公告)号：US20090184434A1

公开(公告)日：2009-07-23

申请号：US12119014

申请日：2008-05-12

申请人： Toshimasa Takahashi ,  Tamio Aihara ,  Jun Takano ,  Dairoku Suzuki ,  Takeshi Sakaguchi

发明人： Toshimasa Takahashi ,  Tamio Aihara ,  Jun Takano ,  Dairoku Suzuki ,  Takeshi Sakaguchi

IPC分类号： F02M9/02 ,  F02M9/04 ,  C10J1/04

CPC分类号： F02M9/02 ,  F02M9/04 ,  Y10S261/12 ,  Y10S261/38 ,  Y10S261/56

摘要： A carburetor includes a main body defining a bore, a main passage and a venturi defined within the bore, and a fuel nozzle carried by the main body and including a fuel nozzle outlet communicating with the venturi. The carburetor may also include a valve member translatable across an axis of the bore, such that in a closed state, the valve member closes the main passage but maintains the venturi at least partially open. The carburetor may also include a needle valve disposed at an end of the fuel nozzle substantially opposite of the fuel nozzle outlet to variably control flow of fuel into a fuel nozzle inlet, and a needle valve transmission may be coupled between a throttle shaft and the needle valve to convert rotation of the throttle shaft to translation of the needle valve.

摘要翻译： 化油器包括限定孔的主体，限定在孔内的主通道和文氏管，以及由主体承载并包括与文丘里管连通的燃料喷嘴出口的燃料喷嘴。 化油器还可以包括能够穿过孔的轴线平移的阀构件，使得在关闭状态下，阀构件关闭主通道，但是维持文丘里管至少部分打开。 化油器还可以包括设置在燃料喷嘴的与燃料喷嘴出口大致相对的端部处的针阀，以可变地控制燃料进入燃料喷嘴入口的流动，并且针阀传动装置可以联接在节流轴和针之间 阀将阀瓣轴的旋转转换成针阀的平移。

公开(公告)号：US06431527B1

公开(公告)日：2002-08-13

申请号：US09705235

申请日：2000-11-02

申请人： Masao Suzuki ,  Tamio Aihara

发明人： Masao Suzuki ,  Tamio Aihara

IPC分类号： F02M906

CPC分类号： F02M9/085 ,  Y10S261/55 ,  Y10S261/83

摘要： A rotary throttle valve carburetor for a two cycle engine reroutes a portion of intake air and introduces the air around the circumference of a fuel feed tube. A rotary throttle, rotatable and vertically moveable, fits into a cylindrical chamber intersecting an air intake channel through a carburetor body. A needle supported by the rotary throttle fits into the fuel feed tube which extends from a fuel metering chamber within the carburetor body into a throttling bore extending laterally through the rotary throttle. An intake portion of the air intake channel expands conically toward an upstream side. An air guide tube is aligned co-axially and radially outward from a fuel feed tube forming an air passageway there between. The intake air portion flows through the air passage from the intake portion of the air intake channel and into a bottom space of the cylindrical chamber beneath the rotary throttle. From the bottom space, the air flows through the passageway transversely into a fuel stream emitted from a fuel jet orifice of the fuel feed tube. Excessive fuel flow is thereby controlled and fuel vaporization is promoted, resulting in improved fuel burn efficiency and a reduction of exhaust emissions.

摘要翻译： 用于两循环发动机的旋转节流阀化油器重新路由进气的一部分并且引导空气围绕燃料供给管的圆周。 可旋转和垂直移动的旋转节流阀装配到通过化油器主体与进气通道相交的圆柱形室中。 由旋转节流阀支撑的针头配合到从化油器主体内的燃料计量室延伸到横向延伸通过旋转节流阀的节流孔的燃料供给管中。 进气通道的进气部分向上游侧锥形扩张。 空气引导管从其间形成空气通道的燃料供给管同轴和径向向外对准。 进气部分从空气进入通道的进气部分流过空气通道，并且在旋转节气门下方流入圆筒室的底部空间。 空气从底部空间流过通道横向流入从燃料供给管的燃料喷射孔排出的燃料流。 由此控制燃料流量过大并促进燃料蒸发，从而提高燃料燃烧效率和减少废气排放。

公开(公告)号：US20080041466A1

公开(公告)日：2008-02-21

申请号：US11835849

申请日：2007-08-08

申请人： Tamio Aihara ,  Bunichi Ohtsuki ,  Kazuyuki Uenoyama

发明人： Tamio Aihara ,  Bunichi Ohtsuki ,  Kazuyuki Uenoyama

IPC分类号： F02M17/00

CPC分类号： F02M19/00 ,  F02M9/08 ,  Y10S261/01 ,  Y10T137/87153

摘要： A valve is used with a carburetor, and the carburetor therefor. The valve has a throttle valve and an air valve. The air valve defines an air bore and has a baffle disposed within the air bore. The baffle separates one section of the air bore from another section, and impedes airflow through the air bore during at least some positions of the air valve.

摘要翻译： 阀门与化油器和化油器一起使用。 该阀具有节流阀和空气阀。 空气阀限定一个空气孔，并具有设置在该空气孔内的挡板。 挡板将空气孔的一部分与另一部分分开，并且在空气阀的至少一些位置处阻止通过气孔的气流。

公开(公告)号：US06382599B1

公开(公告)日：2002-05-07

申请号：US09630080

申请日：2000-08-01

申请人： Tamio Aihara ,  Hiroki Ogasawara

发明人： Tamio Aihara ,  Hiroki Ogasawara

IPC分类号： F02M908

CPC分类号： F02M17/04 ,  F02M9/085 ,  Y10S261/39

摘要： A circuit for delivering fuel into a valve chamber of a rotary throttle valve type carburetor. The fuel delivery circuit includes a fuel supply nozzle, protruding into the valve chamber and fixed at the bottom of the valve chamber to the carburetor body, and an intermediate wall. The intermediate wall is connected to the bottom of the carburetor body. The intermediate wall has a first chamber defined therein, a second chamber defined therein, and structure which cooperatively defines a first passage and a second passage therein. The first passage communicates the first chamber to the fixed end of the fuel supply nozzle, and the second passage communicates the second chamber to the first chamber. In addition, the fuel delivery circuit also includes an enclosure having a pressurized fuel chamber disposed under the intermediate wall, wherein the intermediate wall cooperatively defines a third passage that communicates the pressurized fuel chamber to the second chamber. Furthermore, the fuel delivery circuit also includes a fuel jet, disposed along the first passage, and a check valve, disposed along the first passage between the fuel jet and the first chamber. In this way, the first passage, the first chamber, the second passage, the second chamber, and the third passage cooperatively define an elongated fuel passage between the pressurized fuel chamber and the fuel supply nozzle for delivering fuel into the valve chamber.

摘要翻译： 用于将燃料输送到旋转节气门式化油器的阀室中的电路。 燃料输送回路包括向阀室突出并固定在阀室底部的化油器主体和中间壁的燃料供给喷嘴。 中间壁连接到化油器主体的底部。 中间壁具有限定在其中的第一室，限定在其中的第二室和在其中协同地限定第一通道和第二通道的结构。 第一通道将第一室连通到燃料供给喷嘴的固定端，第二通道将第二室连通到第一室。 此外，燃料输送回路还包括具有设置在中间壁下方的加压燃料室的外壳，其中中间壁协同地限定将加压燃料室连通到第二室的第三通道。 此外，燃料输送回路还包括沿着第一通道设置的燃料喷嘴和沿着燃料射流和第一腔室之间的第一通道设置的止回阀。 以这种方式，第一通道，第一腔室，第二通道，第二腔室和第三通道在加压燃料室和燃料供应喷嘴之间协调地限定一个细长的燃料通道，用于将燃料输送到阀室中。

公开(公告)号：US06334606B1

公开(公告)日：2002-01-01

申请号：US09493362

申请日：2000-01-28

申请人： Teruhiko Tobinai ,  Shin-Ichi Ohgane ,  Tamio Aihara

发明人： Teruhiko Tobinai ,  Shin-Ichi Ohgane ,  Tamio Aihara

IPC分类号： F02M2309

CPC分类号： F02M9/02 ,  F02B17/00 ,  F02B2075/025 ,  F02M23/04 ,  Y02T10/146 ,  Y10S261/01

摘要： A carburetor for a stratified type scavenging engine has a scavenging air supply passage with an air valve therein, a fuel and air mixture passage having a throttle valve therein, a diaphragm which defines a negative pressure chamber on one side and an atmospheric chamber on its other side, and a low pressure passage that communicates a venturi portion of the fuel and air mixing passage with the negative pressure chamber. The air valve is responsive to movement of the diaphragm caused by the pressure differential across it to move the air valve between open and closed positions and a spring yieldably biases the air valve towards its closed position. The air valve is not directly mechanically connected or linked to the throttle valve. Thus, when the throttle valve is rapidly opened during engine acceleration, the air valve is not immediately rapidly opened and is not significantly opened until a sufficient pressure differential exists across the diaphragm. Therefore, during initial rapid acceleration of the engine from idle, the air valve prevents a significant flow of scavenging air to the engine to ensure a sufficiently rich fuel and air mixture is supplied to the engine to support the rapid acceleration.

摘要翻译： 用于分层式清扫发动机的化油器具有在其中具有空气阀的扫气供气通道，其中具有节流阀的燃料和空气混合通道，在一侧限定负压室和在其一侧限定大气室的隔膜 以及将燃料和空气混合通道的文丘里部分与负压室连通的低压通道。 空气阀响应于由隔膜的压差引起的隔膜的移动，以使空气阀在打开和关闭位置之间移动，并且弹簧可靠地将空气阀偏压到其关闭位置。 空气阀不直接机械连接或连接到节流阀。 因此，当在发动机加速期间节流阀快速打开时，空气阀不会立即快速打开，并且在隔膜之间存在足够的压力差时不会显着打开。 因此，在发动机从怠速初始快速加速期间，空气阀防止清除空气到发动机的大量流动，以确保足够丰富的燃料和空气混合物被供应到发动机以支持快速加速。