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。

公开(公告)号：US08757121B1

公开(公告)日：2014-06-24

申请号：US12686198

申请日：2010-01-12

申请人： Matthew A. Braun ,  Gary J. Burns ,  Gerald J. LeMarr, Jr. ,  Brent N. Schermerhorn ,  Mikio Sato ,  Tsuyoshi Watanabe

发明人： Matthew A. Braun ,  Gary J. Burns ,  Gerald J. LeMarr, Jr. ,  Brent N. Schermerhorn ,  Mikio Sato ,  Tsuyoshi Watanabe

IPC分类号： F02M1/00 ,  F02D41/06

CPC分类号： F02D35/0069 ,  F02D41/06 ,  F02D41/064 ,  F02D41/067 ,  F02D2200/101 ,  F02D2400/06 ,  F02M1/02 ,  F02M7/12 ,  F02M17/04

摘要： Supply of supplementary fuel is controlled through a supplementary fuel supply passage in a carburetor to an engine according to a variety of methods and devices.

摘要翻译： 根据各种方法和装置，补充燃料的供应通过化油器中的补充燃料供应通道控制到发动机。

公开(公告)号：US06715738B1

公开(公告)日：2004-04-06

申请号：US10254373

申请日：2002-09-25

申请人： Matthew A. Braun ,  Masatoshi Endo ,  David L. Speirs

发明人： Matthew A. Braun ,  Masatoshi Endo ,  David L. Speirs

IPC分类号： F02M718

CPC分类号： F02M3/10 ,  F02M3/14 ,  Y10S261/38

摘要： A fuel-air mixture control apparatus for adjusting the mixture of fuel and air that a carburetor provides to an internal combustion engine. A mixing passage provides a fuel-air mixture to one or more combustion chambers of an internal combustion engine. A main fuel supply passage provides fluid communication between a fuel source and the mixing passage through a main fuel nozzle. An idle fuel supply passage provides fluid communication between a fuel source and the mixing passage through an idle fuel nozzle. An idle fuel ratio control valve adjusts the proportion of fuel drawn into the mixing passage through the idle fuel supply passage to the flow rate of air drawn into the mixing passage. The idle fuel supply passage is in fluid communication with the main fuel nozzle. Vacuum pressure induced by flow rates across the main fuel nozzle, which exceed a predetermined flow rate, precludes idle fuel flow into the mixing passage. As such, the position of the idle fuel ratio control valve cannot affect the fuel air mixture at throttle settings that provide a flow of fuel and air equal to or exceeding the predetermined value. A main fuel flow ratio control valve adjusts the proportion of fuel drawn into the mixing passage through the main fuel supply passage to the flow rate of air drawn into the mixing passage.

摘要翻译： 一种燃料 - 空气混合物控制装置，用于调节化油器提供给内燃机的燃料和空气的混合物。 混合通道将燃料 - 空气混合物提供给内燃机的一个或多个燃烧室。 主燃料供给通道通过主燃料喷嘴在燃料源和混合通道之间提供流体连通。 空闲的燃料供应通道提供燃料源和混合通道之间通过怠速燃料喷嘴的流体连通。 怠速燃料比控制阀调节通过怠速燃料供给通道吸入到混合通道中的燃料的比例与吸入混合通道的空气流量的比例。 空闲燃料供给通道与主燃料喷嘴流体连通。 通过主燃料喷嘴的超过预定流量的流量引起的真空压力阻止空闲燃料流入混合通道。 因此，怠速燃料比控制阀的位置不会影响在提供等于或超过预定值的燃料和空气流量的节气门设置处的燃料空气混合物。 主燃料流量比控制阀调节通过主燃料供给通道吸入到混合通道中的燃料的比例与吸入混合通道的空气流量的比例。

公开(公告)号：US5711901A

公开(公告)日：1998-01-27

申请号：US658761

申请日：1996-06-05

申请人： David L. Berg ,  Matthew A. Braun ,  Donald C. Ross

发明人： David L. Berg ,  Matthew A. Braun ,  Donald C. Ross

IPC分类号： F02B63/02 ,  F02B75/02 ,  F02M1/16 ,  F02M7/087 ,  F02M17/04

CPC分类号： F02M1/16 ,  F02B63/02 ,  F02M17/04 ,  F02M7/087 ,  F02B2075/025 ,  F02B2075/027 ,  Y10S261/08

摘要： A carburetor for a two or four stroke engine having a diaphragm chamber for supplying fuel to the air intake passage of the engine, and a reservoir for primer fuel. A manually operable pump or bulb draws fuel from the diaphragm chamber into the reservoir. An outlet passage leads from the reservoir to deliver primer fuel to the engine. A normally closed manually operable valve or button is provided for opening the outlet passage. The capacity or the reservoir is varied as a function of ambient temperature by a temperature compensator.

摘要翻译： 一种用于二冲程发动机或四冲程发动机的化油器，其具有用于向发动机的进气通道供应燃料的隔膜室和用于底漆燃料的储存器。 手动操作的泵或灯泡将燃料从隔膜室吸入储存器。 出口通道从储存器引出以将引燃燃料输送到发动机。 提供常闭手动操作的阀或按钮以打开出口通道。 通过温度补偿器，容量或储存器作为环境温度的函数而变化。

公开(公告)号：US07467785B2

公开(公告)日：2008-12-23

申请号：US11518037

申请日：2006-09-08

申请人： Matthew A. Braun

发明人： Matthew A. Braun

IPC分类号： F02M7/08

CPC分类号： F02M17/04 ,  Y10S261/08 ,  Y10S261/21

摘要： A carburetor includes a fuel and air mixing passage with a throttle valve therein, and a bore with a valve therein defining in part a valve actuation chamber and a separate fuel and air mixing chamber in communication with the fuel and air mixing passage at a location downstream of the throttle valve. A fuel passage and an air passage are in communication with the fuel and air mixing chamber. A purge apparatus is in communication with the valve actuation chamber and is operable to move the valve to an open position to open the fuel and air passages to the fuel and air mixing chamber such that a fuel and air mixture may flow from the fuel and air mixing chamber to the fuel and air mixing passage downstream of the throttle valve.

摘要翻译： 化油器包括在其中具有节流阀的燃料和空气混合通道，并且其中具有阀的孔部分地限定了阀致动室和在下游位置处与燃料和空气混合通道连通的单独的燃料和空气混合室 的节流阀。 燃料通道和空气通道与燃料和空气混合室连通。 净化装置与阀致动室连通，并且可操作以将阀移动到打开位置，以将燃料和空气通道打开到燃料和空气混合室，使得燃料和空气混合物可能从燃料和空气流出 混合室到节流阀下游的燃料和空气混合通道。

公开(公告)号：US20080061454A1

公开(公告)日：2008-03-13

申请号：US11518037

申请日：2006-09-08

申请人： Matthew A. Braun

发明人： Matthew A. Braun

IPC分类号： F02M17/04

CPC分类号： F02M17/04 ,  Y10S261/08 ,  Y10S261/21

摘要： A carburetor includes a fuel and air mixing passage with a throttle valve therein, and a bore with a valve therein defining in part a valve actuation chamber and a separate fuel and air mixing chamber in communication with the fuel and air mixing passage at a location downstream of the throttle valve. A fuel passage and an air passage are in communication with the fuel and air mixing chamber. A purge apparatus is in communication with the valve actuation chamber and is operable to move the valve to an open position to open the fuel and air passages to the fuel and air mixing chamber such that a fuel and air mixture may flow from the fuel and air mixing chamber to the fuel and air mixing passage downstream of the throttle valve.

公开(公告)号：US07097165B1

公开(公告)日：2006-08-29

申请号：US11104907

申请日：2005-04-13

申请人： Matthew A. Braun

发明人： Matthew A. Braun

IPC分类号： F02M3/08

CPC分类号： F02M3/10 ,  Y10S261/38 ,  Y10S261/84 ,  Y10T137/7062 ,  Y10T137/7065

摘要： A carburetor fuel valve adjustment and limiter assembly for a combustion engine limits the maximum and minimum fuel amounts delivered through the valve of the carburetor. A needle valve of the adjustment and limiter assembly cooperates with a collar and pin generally located axially inward of an enlarged valve head. The collar of the limiter assembly is arranged telescopically with a valve shaft and yieldably biased to lock to the head when moved in an axially outward direction. When locked, and upon rotation of the valve, first and second stops carried by the collar are arranged to bear on a stationary pin carried by a carburetor body. During manufacture, the collar can be pushed axially inward against the bias of a spring to disengage the collar from the head to permit rotation of the needle valve while the collar remains stationary for unlimited adjustment of the needle valve.

摘要翻译： 用于内燃机的化油器燃料阀调节和限制器组件限制了通过化油器阀门传递的最大和最小燃料量。 调节和限制器组件的针阀与通常位于扩大的阀头的轴向内侧的套环和销配合。 限制器组件的轴环可伸缩地布置有阀轴，并且在沿轴向向外的方向移动时可屈曲地偏置以锁定到头部。 当锁定时，并且在阀的旋转时，由套环承载的第一和第二挡块被布置成承载在由化油器主体承载的固定销上。 在制造过程中，可以克服弹簧的偏压将轴环向内推动，从而使套环脱离头部，以允许针阀旋转，同时套环保持静止，从而无缝调节针阀。