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1. 发明申请

US20090315195A1 Carburettors 有权
标题翻译：化油器
公开(公告)号：US20090315195A1
公开(公告)日：2009-12-24
申请号：US12374551
申请日：2007-07-20
申请人： James Copeland
发明人： James Copeland
IPC分类号： F02M11/02
CPC分类号： F02M13/046 , F02B25/22 , F02B2075/025 , F02D9/1045 , F02D2009/0279 , F02M23/03 , Y02T10/146 , Y10S261/01
摘要： A carburettor includes a flow duct (4) comprising rich (8) and lean (10) passages in parallel, through which, in use, air flows and which are separated by a substantially planar partition (6). At least one fuel jet (12, 14, 16) communicates with the rich passage (8). The partition (6) includes a circular aperture (20). A butterfly valve (24) is mounted on a pivotal shaft (22) to be pivotable between a closed position, in which the flow duct (4) is substantially closed, and an open position, in which the flow duct is substantially open. The pivotal shaft (22) extends perpendicular to the plane of the partition (6). The pivotal shaft (22) carries a circular obturator disc (26), whose diameter is substantially equal to that of the aperture (20) and which is received in the aperture (20) and substantially closes the aperture (20) at all positions of the butterfly valve (24).
摘要翻译：化油器包括平行包括富（8）和稀（10）通道的流动管道（4），在使用中空气流过该流道，并由基本平坦的隔板（6）分隔。至少一个燃料喷嘴（12,14,16）与富通道（8）连通。分隔件（6）包括圆形孔（20）。蝶阀（24）安装在枢转轴（22）上，以在流动管道（4）基本上关闭的关闭位置和流动管道基本上打开的打开位置之间枢转。枢转轴（22）垂直于分隔件（6）的平面延伸。所述枢转轴（22）承载圆形的闭塞圆盘（26），其直径基本上等于所述孔（20）的直径，并且其被接收在所述孔（20）中并在所述孔（20）的所有位置处基本上封闭所述孔蝶阀（24）。

2. 发明授权

US07357377B2 Carburettors 有权
标题翻译：化油器
公开(公告)号：US07357377B2
公开(公告)日：2008-04-15
申请号：US10572330
申请日：2004-09-16
申请人： Stephen Brian Glover , Stephen Morris
发明人： Stephen Brian Glover , Stephen Morris
IPC分类号： F02M7/24
CPC分类号： F02B25/22 , F02B2075/025 , F02M3/14 , F02M13/046 , Y10S261/01
摘要： A carburettor is connected into the inlet duct (48) of an internal combustion engine. The inlet duct is divided by a dividing wall (64) into a rich passage (42) and a lean passage (44). The carburettor includes a fuel chamber (4) and defines a flow duct divided by a planar partition (66) into a rich duct (30) and a lean duct (32) which communicate with the rich and lean passages, respectively. The partition (66) defines an aperture (40) in which a planar butterfly valve (20) is pivotably mounted. A number of fuel supply orifices (61, 62) communicate with the fuel chamber (4) and with the duct (30) at a position opposite to the aperture (40). The butterfly valve (20) is pivotable between an open position, in which the flow duct is substantially open and the aperture (40) is substantially closed and all of the fuel flowing out of the fuel supply orifices (61, 62) flows into the rich duct (30), and a closed position, in which the flow duct is substantially closed and the aperture (40) is substantially open and the fuel flowing out of the fuel supply orifices flows into to both the rich and lean ducts. An idle fuel supply orifice (8) is provided in the dividing wall (64) and communicates with the rich and lean passages (42, 44) and with the fuel chamber (4) and with the atmosphere. Under idling operation of the engine, an air/fuel mixture is induced into the rich and lean passages not only through one of the fuel supply orifices (61) but also through the idle fuel supply orifice (8).
摘要翻译：化油器连接到内燃机的入口管道（48）中。入口管道由分隔壁（64）分成富通道（42）和贫通道（44）。化油器包括燃料室（4），并且将由平面分隔件（66）分隔成的分流管道分成富管道（30）和与富通道和贫通道连通的贫管道（32）。分隔件（66）限定一个孔（40），平面蝶阀（20）可旋转地安装在该孔中。多个燃料供给孔（61,62）与燃料室（4）和管道（30）在与孔（40）相对的位置处连通。蝶阀（20）可以在打开位置之间枢转，在该打开位置，流动管道基本上是敞开的，孔（40）基本上是封闭的，并且从燃料供给孔（61,62）流出的所有燃料流入富管（30）和关闭位置，其中流道基本上封闭，并且孔（40）基本上敞开，并且从燃料供应孔流出的燃料流入富管和贫管。在分隔壁（64）中设置空闲燃料供给孔（8），并且与富和贫通道（42,44）和燃料室（4）以及大气连通。在发动机的空转操作下，空气/燃料混合物不仅通过燃料供给孔（61）之一而且通过怠速燃料供给口（8）而被引入富气和贫气通道。

3. 发明授权

US07325791B2 Carburetor for stratified scavenging two-cycle engine 有权
标题翻译：用于分层清扫双循环发动机的化油器
公开(公告)号：US07325791B2
公开(公告)日：2008-02-05
申请号：US11226228
申请日：2005-09-15
申请人： Kimio Koizumi
发明人： Kimio Koizumi
IPC分类号： F02M9/08
CPC分类号： F02B25/22 , F02B25/14 , F02B2075/025 , Y10S261/01
摘要： A carburetor for a stratified scavenging two-cycle engine, in which a throttle valve and an air valve are formed in a valve element that is a single cylinderical member in which a throttle through-hole and an air through-hole are diametrically formed and which is rotatably fitted in a body, the mixture passage and the air passage being formed piercing through a body, wherein the height of the body is decreased so as to miniaturize the carburetor as a whole, and the mixture passage (6) and the air passage (9) are formed in a single cylindrical common hole (69) in which the mixture passage (6) and the air passage (9) are partitioned by a partition wall (68).
摘要翻译：一种用于分层清扫双循环发动机的化油器，其中节流阀和空气阀形成在其中节流通孔和空气通孔径向形成的单个圆柱体构件的阀元件中，可旋转地装配在主体中，混合物通道和空气通道穿过主体，其中主体的高度减小，从而整体化化油器的小型化，并且混合通道（6）和空气通道（9）形成在其中混合通道（6）和空气通道（9）被分隔壁（68）分隔开的单个圆柱形公共孔（69）中。

4. 发明申请

US20070063358A1 Carburetor with intermediate throttle valve blocking position 失效
标题翻译：化油器具有中间节流阀阻塞位置
公开(公告)号：US20070063358A1
公开(公告)日：2007-03-22
申请号：US11517793
申请日：2006-09-08
申请人： Nagesh Mavinahally
发明人： Nagesh Mavinahally
IPC分类号： F02M1/02
CPC分类号： F02M23/03 , F02M7/26 , Y02T10/146 , Y10S261/01
摘要： A carburetor including a frame having a first air/fuel channel and a second air channel; and a throttle valve assembly connected to the frame and having two valve sections. Each valve section is located in a respective one of the channels. A second one of the valve sections has an air bleed hole therethrough. The second valve section is movable relative to the frame from a first idle position to a second intermediate closed position and then to a third open position at a wide open throttle (WOT). The air bleed hole allows flow through the second channel at the first idle position, but does not allow flow through the second channel when the second valve section is at the second intermediate closed position.
摘要翻译：一种化油器，包括具有第一空气/燃料通道和第二空气通道的框架; 以及连接到框架并具有两个阀部分的节流阀组件。每个阀部分位于相应的一个通道中。第二个阀段具有穿过其的排气孔。第二阀部分可相对于框架从第一怠速位置移动到第二中间关闭位置，然后可以以较宽的打开节气门（WOT）移动到第三打开位置。排气孔允许在第一怠速位置流过第二通道，但是当第二阀部分处于第二中间关闭位置时不允许流过第二通道。

5. 发明授权

US06877723B2 Valve for control of additional air for a two-stroke engine 有权
标题翻译：用于控制二冲程发动机附加空气的阀
公开(公告)号：US06877723B2
公开(公告)日：2005-04-12
申请号：US10064320
申请日：2002-07-02
申请人： Pär Martinsson , Mikael Bergman , Bo Carlsson , Mats Roberg
发明人： Pär Martinsson , Mikael Bergman , Bo Carlsson , Mats Roberg
IPC分类号： F02B25/22 , F02B75/02 , F02M23/03 , F02M17/40
CPC分类号： F02M23/03 , F02B25/22 , F02B2075/025 , Y02T10/146 , Y10S261/01
摘要： Flange assembly for supporting a structure that provides scavenging air supply to an internal combustion engine at the carburetor to the engine. The assembly includes a thin-body flange that is configured to be abuttingly installed upon an end surface of the carburetor. The carburetor has its combustion air intake or port exposed at an outer surface for intaking air for the combustion process. The thin construction of the flange enables advantageous positioning of the adaptive flange. The relative dimensioning of the thin-body flange also contributes to its low-impact as a modification to air inlet arrangement. A combustion air aperture is provided that extends through the thin-body flange. The combustion air aperture is located in the flange for alignment with the combustion air intake. By this alignment, fluid communication is established across the flange and into the carburetor when the flange is abuttingly installed upon the carburetor. A scavenging air aperture also extends through the thin-body flange and is spaced apart from the combustion air aperture. A valve assembly is operatively coupled to the thin-body flange and has a valve element positioned at the scavenging air aperture for opening and closing the scavenging air aperture.
摘要翻译：用于支撑结构的法兰组件，所述结构向所述发动机的化油器内部的内燃机提供扫气。组件包括被构造成邻接地安装在化油器的端面上的薄体凸缘。化油器的燃烧空气进口或端口暴露在外表面，用于吸入空气用于燃烧过程。凸缘的薄结构使得自适应凸缘能够有利地定位。薄体法兰的相对尺寸也有助于其作为对进气装置的改进的低冲击。提供了延伸穿过薄体法兰的燃烧空气孔。燃烧空气孔位于凸缘中以与燃烧空气入口对准。通过这种对准，当凸缘邻接安装在化油器上时，跨越凸缘和化油器建立流体连通。清扫空气孔也延伸穿过薄体法兰并与燃烧空气孔隔开。阀组件可操作地联接到薄体凸缘并且具有定位在扫气空气孔处的阀元件，用于打开和关闭扫气孔。

6. 发明申请

US20050062176A1 Fuel system of carburetor 审中-公开
标题翻译：化油器燃油系统
公开(公告)号：US20050062176A1
公开(公告)日：2005-03-24
申请号：US10990726
申请日：2004-11-16
申请人： Takumi Nonaka
发明人： Takumi Nonaka
IPC分类号： F02M7/22 , F02M7/23 , F02M17/04 , F02M19/04
CPC分类号： F02M17/04 , F02M19/04 , Y10S261/01 , Y10S261/38
摘要： The present invention facilitates the stabilization of the fuel flow rate in a single fuel system carburetor in which bleed air, mixed with fuel, is controlled by a metering needle moving in response to the movement of a throttle valve and the mixture is discharged into an intake channel. The present invention is directed to a carburetor in which an effective surface area of a metering hole is adjusted by a metering needle moving in response to the movement of a throttle valve, and the fuel introduced into a mixing chamber from a constant-fuel chamber under flow rate control with a metering, hole is mixed with bleed air and discharged into an intake channel from a nozzle orifice. The mixing chamber has a volume providing for absorption and relaxation of changes in the negative pressure acting upon the nozzle orifice, the fuel is sucked in under stabilized negative pressure, and the air-fuel mixture with a preset air/fuel ratio is supplied over the entire operation range of the engine.
摘要翻译：本发明有助于在单个燃料系统化油器中稳定燃料流量，其中与燃料混合的排气由计量针由于节流阀的运动而运动而被控制，并且混合物被排放到进气口渠道。本发明涉及一种化油器，其中通过计量针调整计量孔的有效表面积，响应于节流阀的移动，并且燃料从恒定燃料室引入混合室具有计量孔的流量控制与排气混合并从喷嘴孔排出到进气通道中。混合室具有提供用于吸收和松弛作用在喷嘴孔上的负压变化的体积，燃料在稳定的负压下被吸入，并且具有预设空气/燃料比的空气 - 燃料混合物通过发动机的整个运行范围。

7. 发明申请

US20050034689A1 Carburetor for two-cycle engine 有权
公开(公告)号：US20050034689A1
公开(公告)日：2005-02-17
申请号：US10915639
申请日：2004-08-09
申请人： Mamoru Toda , Satoru Araki
发明人： Mamoru Toda , Satoru Araki
IPC分类号： F02M1/02 , F02B25/02 , F02B25/14 , F02D9/02 , F02D9/10 , F02M1/16 , F02M17/04 , F02M19/00 , F02M19/02 , F02M23/00 , F02M23/03 , F02M37/12
CPC分类号： F02D9/106 , F02B25/02 , F02B25/14 , F02D9/1065 , F02D2009/0279 , F02M1/16 , F02M17/04 , F02M19/02 , F02M23/00 , F02M23/03 , F02M37/12 , Y02T10/146 , Y10S261/01
摘要： An interlocking lever having first and second cam faces is mounted on a throttle valve stem, and a throttle valve is arbitrarily opened to perform start-up in a state in which the first cam face makes contact with the choke valve lever and the interlocking lever is stopped during low-temperature start-up with the choke valve closed. After the choke valve has been returned to the fully open position, the throttle valve alone is opened with a small degree of opening to perform low-load operation; and in the mid- and high-load region, the interlocking lever integrally turns with the throttle valve, the second cam face pushes the air valve lever, and the throttle valve and air valve are caused to open and close proportionally.

8. 发明授权

US06845972B2 Fuel system of carburetor 有权
标题翻译：化油器燃油系统
公开(公告)号：US06845972B2
公开(公告)日：2005-01-25
申请号：US10675029
申请日：2003-09-29
申请人： Takumi Nonaka
发明人： Takumi Nonaka
IPC分类号： F02M7/22 , F02M7/23 , F02M17/04 , F02M19/04
CPC分类号： F02M17/04 , F02M19/04 , Y10S261/01 , Y10S261/38
摘要： The present invention facilitates the stabilization of the fuel flow rate in a single fuel system carburetor in which bleed air, mixed with fuel, is controlled by a metering needle moving in response to the movement of a throttle valve and the mixture is discharged into an intake channel. The present invention is directed to a carburetor in which an effective surface area of a metering hole is adjusted by a metering needle moving in response to the movement of a throttle valve, and the fuel introduced into a mixing chamber from a constant-fuel chamber under flow rate control with a metering hole is mixed with bleed air and discharged into an intake channel from a nozzle orifice. The mixing chamber has a volume providing for absorption and relaxation of changes in the negative pressure acting upon the nozzle orifice, the fuel is sucked in under stabilized negative pressure, and the air-fuel mixture with a preset air/fuel ratio is supplied over the entire operation range of the engine.
摘要翻译：本发明有助于在单个燃料系统化油器中稳定燃料流量，其中与燃料混合的排气由计量针由于节流阀的运动而运动而被控制，并且混合物被排放到进气口渠道。本发明涉及一种化油器，其中通过计量针调整计量孔的有效表面积，响应于节流阀的移动，并且燃料从恒定燃料室引入混合室具有计量孔的流量控制与放气混合并从喷嘴孔排放到进气通道中。混合室具有提供用于吸收和松弛作用在喷嘴孔上的负压变化的体积，燃料在稳定的负压下被吸入，并且具有预设空气/燃料比的空气 - 燃料混合物通过发动机的整个运行范围。

9. 发明授权

US06702262B2 Fuel system of carburetor 有权
标题翻译：化油器燃油系统
公开(公告)号：US06702262B2
公开(公告)日：2004-03-09
申请号：US10099560
申请日：2002-03-14
申请人： Takumi Nonaka
发明人： Takumi Nonaka
IPC分类号： F02M1904
CPC分类号： F02M17/04 , F02M19/04 , Y10S261/01 , Y10S261/38
摘要： The present invention facilitates the stabilization of the fuel flow rate in a single fuel system carburetor in which bleed air, mixed with fuel, is controlled by a metering needle moving in response to the movement of a throttle valve and the mixture is discharged into an intake channel. The present invention is directed to a carburetor in which an effective surface area of a metering hole is adjusted by a metering needle moving in response to the movement of a throttle valve, and the fuel introduced into a mixing chamber from a constant-fuel chamber under flow rate control with a metering hole is mixed with bleed air and discharged into an intake channel from a nozzle orifice. The mixing chamber has a volume providing for absorption and relaxation of changes in the negative pressure acting upon the nozzle orifice, the fuel is sucked in under stabilized negative pressure, and the air-fuel mixture with a preset air/fuel ratio is supplied over the entire operation range of the engine.
摘要翻译：本发明有助于在单个燃料系统化油器中稳定燃料流量，其中与燃料混合的排气由计量针由于节流阀的运动而运动而被控制，并且混合物被排放到进气口渠道。本发明涉及一种化油器，其中通过计量针调整计量孔的有效表面积，响应于节流阀的移动，并且燃料从恒定燃料室引入混合室具有计量孔的流量控制与放气混合并从喷嘴孔排放到进气通道中。混合室具有提供用于吸收和松弛作用在喷嘴孔上的负压变化的体积，燃料在稳定的负压下被吸入，并且具有预设空气/燃料比的空气 - 燃料混合物通过发动机的整个运行范围。

10. 发明授权

US06688585B2 Carburetor for a two-cycle scavenging engine 有权
标题翻译：化油器为两循环清扫发动机
公开(公告)号：US06688585B2
公开(公告)日：2004-02-10
申请号：US10156362
申请日：2002-05-28
申请人： Matthew A. Braun , Gary J. Burns , Masatoshi Endo
发明人： Matthew A. Braun , Gary J. Burns , Masatoshi Endo
IPC分类号： F02M1734
CPC分类号： F02M17/04 , F02D9/106 , Y10S261/01
摘要： A carburetor for a scavenged two-stroke internal combustion engine has an enriched fuel-and-air mixing passage extending through a housing of the carburetor. Engaged to the housing is a body of an air flow modular assembly which carries a primary air flow passage which houses a butterfly-type control valve therein. The throttle valve of the fuel-and-air mixing passage is mechanically linked or cammed to the control valve of the air flow passage so that opening of the throttle valve soon after opens the control valve allowing additional air to enter and provide a leaner fuel-and-air ratio in the combustion chamber of the engine when running under load. The air flow modular assembly has a sealing-and-bearing assembly which eliminates air leakage from the surrounding environment along the shaft of the control valve and into the primary air flow passage. The sealing-and-bearing assembly has a bushing which inserts into a counter bore of a cylindrical bore which receives the rotating shaft of the control valve. The bushing is thereby disposed radially and sealingly between the shaft and the body of the modular assembly to journal the shaft and prevent air leakage. To prevent air bypass leakage around the plate of the control valve within the air flow passage, the bushing and respective counter bore do not extend all the way through the body and into the air passage, instead, a cylindrical sealing surface which in-part defines the cylindrical bore, sealingly engages the shaft axially between the counter bore and the air flow passage. In this way, the plate and body interface at the location of the rotating shaft can more exactly follow the contour of the air flow passage, thereby preventing unwanted bypass air flow when the control valve is closed.
摘要翻译：用于清扫二冲程内燃机的化油器具有延伸穿过化油器壳体的富集的燃料和空气混合通道。接合到壳体的是气流模块化组件的主体，其携带在其中容纳蝶形控制阀的一次空气流动通道。燃料和空气混合通道的节流阀机械地连接或凸轮到空气流动通道的控制阀，从而在打开控制阀之后立即打开节流阀，允许额外的空气进入并提供更精细的燃料 - 发动机燃烧室内负荷下运行时的空气比。气流模块组件具有密封和轴承组件，其消除了沿着控制阀的轴的周围环境的空气泄漏并进入一次空气流动通道。密封和轴承组件具有插入到容纳控制阀的旋转轴的圆柱形孔的反向孔中的衬套。因此衬套径向地和密封地设置在轴和模块化组件的主体之间以使轴颈轴颈并防止空气泄漏。为了防止空气旁路在空气流动通道内的控制阀板周围泄漏，套管和相应的反向孔不会一直延伸穿过主体并进入空气通道，而是一个圆柱形的密封表面，圆柱形孔轴向地密封地连接在反向孔和空气流动通道之间。以这种方式，在转轴位置处的板和主体接口可以更精确地跟随空气流动通道的轮廓，从而防止当控制阀关闭时不必要的旁路气流。

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