公开(公告)号：US07527248B2

公开(公告)日：2009-05-05

申请号：US11846126

申请日：2007-08-28

Applicant: William T. Cobb, Jr.

Inventor： William T. Cobb, Jr.

IPC: F02M17/04

CPC classification number: F02M17/04 ,  Y10S261/68

Abstract: A diaphragm carburetor (1) for internal combustion engines includes a carburetor body (2,2′) provided with a feed duct (3) of an air/fuel mixture to the engine, the duct (3) being intercepted by at least one butterfly valve (20); a pumping device including a diaphragm pump (6) communicating on one side with the engine and on the other side with a fuel tank, the diaphragm pump (6) being driven by the pulses corning from the engine; a metering device including a diaphragm meter (7) adapted to keep a first chamber (13) and a second chamber (12) separate, with the meter (7) interposed, the first chamber (13) being at environmental pressure, and the second chamber (12) communicating both with the diaphragm pump (6), on the side which communicates with the tank, through a line intercepted by a valve controlled by the meter (7) itself, and with the feed duct (3) of the mixture, where the pumping device and the metering device are integrally made on a single block (5) fixed directly on one side of the carburetor body (2).

Abstract translation: 用于内燃机的隔膜式化油器（1）包括设置有与发动机的空气/燃料混合物的进料管（3）的化油器主体（2,2'），管道（3）被至少一只蝶 阀门（20）; 泵送装置，其包括在一侧与发动机连通并且在另一侧与燃料箱连通的隔膜泵（6），所述隔膜泵（6）由从发动机取出的脉冲驱动; 一种计量装置，包括适于将第一腔室（13）和第二腔室（12）保持分开的隔膜计量器（7），所述计量器（7）插入在所述第一腔室（13）处于环境压力下，所述第二腔室 （12），其通过隔离泵（6）在与罐连通的一侧上通过由仪表（7）本身控制的阀截取的管线与混合物的进料管（3）连通 其中泵送装置和计量装置整体制成在直接固定在化油器主体（2）的一侧上的单个块（5）上。

公开(公告)号：US06698727B1

公开(公告)日：2004-03-02

申请号：US10294215

申请日：2002-11-13

Applicant: Scott R. Shaw

Inventor： Scott R. Shaw

IPC: F02M1704

CPC classification number: F02M17/04 ,  Y10S261/68 ,  Y10S261/74

Abstract: A diaphragm carburetor is disclosed wherein a mechanism for varying the fuel flow rate through the carburetor for delivery to the engine can be controlled by electronic feedback based on engine performance. A permanent magnet/wire coil assembly is attached to the diaphragm controlling the opening to the metering chamber within the carburetor. The assembly responds to commands based on engine performance and can vary the size of the opening to the metering chamber. In this way, the fuel flow rate through the carburetor can be modified to obtain the optimal fuel/air ratio for peak performance of the engine.

Abstract translation: 公开了一种隔膜式化油器，其中可以通过基于发动机性能的电子反馈来控制用于改变通过化油器的燃料流量用于输送到发动机的机构。 永磁体/线圈组件附接到控制化油器内的计量室的开口的隔膜。 该组件基于发动机性能响应命令，并且可以改变到计量室的开口的尺寸。 以这种方式，可以改变通过化油器的燃料流量，以获得用于发动机峰值性能的最佳燃料/空气比。

公开(公告)号：US06595500B2

公开(公告)日：2003-07-22

申请号：US10127496

申请日：2002-04-23

Applicant: Gerhard Osburg ,  Wolfgang Luithardt ,  Peter Schmidt ,  Reinhard Gerhardy

Inventor： Gerhard Osburg ,  Wolfgang Luithardt ,  Peter Schmidt ,  Reinhard Gerhardy

IPC: F02M708

CPC classification number: F02M7/08 ,  F02B63/02 ,  F02M17/04 ,  F02M37/16 ,  F02M37/20 ,  Y10S261/08 ,  Y10S261/68

Abstract: A membrane carburetor for an internal combustion engine in a portable handheld work apparatus includes a control chamber (3) delimited by a membrane (2). The control chamber (3) is connected via a feed line (4) to a fuel tank (5). The feed line (4) is cleared via a valve body (6) when there is a deflection of the membrane (2) because of an underpressure in the control chamber (3). The control chamber (3) is connected to an air channel (10) via at least one fuel nozzle (7) and at least one ancillary chamber (9). The air channel (10) passes through the membrane carburetor (1) and leads to the internal combustion engine. A purge pump (11) is provided in a fuel line (12) connecting the control chamber (3) to the fuel tank (5). The fuel path between the control chamber (3) and the purge pump (11) is guided through at least one ancillary chamber (9).

Abstract translation: 用于便携式手持式工作装置中的内燃机的膜式化油器包括由膜（2）限定的控制室（3）。 控制室（3）经由进料管线（4）连接到燃料箱（5）。 当由于控制室（3）中的负压而存在膜（2）的偏转时，馈送线（4）通过阀体（6）而被清除。 控制室（3）经由至少一个燃料喷嘴（7）和至少一个辅助室（9）连接到空气通道（10）。 空气通道（10）穿过膜化油器（1）并通向内燃机。 在将控制室（3）连接到燃料箱（5）的燃料管路（12）中设置有净化泵（11）。 控制室（3）和净化泵（11）之间的燃料路径被引导通过至少一个辅助室（9）。

公开(公告)号：US06494180B1

公开(公告)日：2002-12-17

申请号：US09654422

申请日：2000-09-01

Applicant: Jörg Schlossarczyk

Inventor： Jörg Schlossarczyk

IPC: F02M712

CPC classification number: F02M17/04 ,  F01P5/02 ,  F02B63/02 ,  F02B2075/025 ,  F02B2075/027 ,  F02D31/009 ,  F02D2009/0216 ,  Y10S261/68

Abstract: A manually guided implement having an internal combustion engine is provided. A fuel/air mixture is supplied to the internal combustion engine via a diaphragm carburetor. The engine is cooled by a cooling fan that is driven by the internal combustion engine and that generates an air stream. The diaphragm carburetor has a fuel-filled control chamber with a control diaphragm which on that side facing away from the control chamber delimits a compensation chamber. To limit speed, a control pressure line is provided between the compensation chamber and the air stream generated by the cooling fan.

Abstract translation: 提供了一种具有内燃机的手动导向装置。 燃料/空气混合物通过隔膜化油器供给内燃机。 发动机由内燃机驱动的冷却风扇冷却并产生气流。 隔膜式化油器具有燃料填充控制室，其具有控制膜片，该控制膜片在远离控制室的一侧限定补偿室。 为了限制速度，在补偿室和由冷却风扇产生的气流之间提供控制压力线。

公开(公告)号：US6059271A

公开(公告)日：2000-05-09

申请号：US84790

申请日：1998-05-27

Applicant: Reinhard Gerhardy

Inventor： Reinhard Gerhardy

IPC: F02M1/06 ,  F02D9/02 ,  F02M1/04 ,  F02M17/04

CPC classification number: F02M17/04 ,  F02M1/046 ,  F02D2009/025 ,  Y10S261/68

Abstract: The invention is directed to a membrane carburetor which includes an intake channel having a throttle flap which is pivotally journalled. The carburetor also includes a control chamber from which fuel can be supplied to the intake channel. A valve is mounted in an ancillary channel and a corresponding adjustment of the throttle flap results in dependence upon the opening and closing position.

Abstract translation: 本发明涉及一种膜化油器，其包括具有枢转轴颈的节流阀的进气通道。 化油器还包括控制室，燃料可从该控制室供给到进气通道。 阀安装在辅助通道中，并且相应的节流阀瓣的调节取决于打开和关闭位置。

公开(公告)号：US5676887A

公开(公告)日：1997-10-14

申请号：US665645

申请日：1996-06-18

Applicant: Isamu Soeda ,  Michihiko Aoshima

Inventor： Isamu Soeda ,  Michihiko Aoshima

IPC: B65G47/82 ,  F02M17/04

CPC classification number: F02M17/04 ,  Y10S261/50 ,  Y10S261/68

Abstract: An orifice assembly is detachably attached to a cover serving as a wall surface of an atmospheric chamber. The orifice assembly includes two inner and outer communication ports in a housing thereof. The two inner and outer communication ports are shut out by a partition wall through which an orifice having a small diameter and a communication hole having a diameter larger than that of said orifice, and a check valve is disposed in the communication hole to close the latter therewith. One of the two inner and outer communication ports is communicated with an atmospheric chamber and the other inner and outer communication ports is communicated with the atmosphere. When the pressure in the atmospheric chamber becomes higher than the atmospheric pressure, the communication hole is closed with the check valve, and when the pressure in the atmospheric chamber 48 is equal to or becomes lower than the atmospheric pressure, the communication hole is opened.

Abstract translation: 孔组件可拆卸地附接到用作大气室的壁表面的盖。 孔口组件在其壳体中包括两个内部和外部连通端口。 两个内外连通端口被分隔壁关闭，通过该分隔壁具有小直径的孔口和直径大于所述孔口的直径的连通孔，并且止回阀设置在连通孔中以闭合孔 随之而来。 两个内部和外部通信端口中的一个与大气室连通，另一个内部和外部通信端口与大气连通。 当大气室中的压力变得高于大气压时，用止回阀关闭连通孔，并且当大气室48中的压力等于或变得低于大气压时，连通孔打开。

公开(公告)号：US5411680A

公开(公告)日：1995-05-02

申请号：US150973

申请日：1993-11-12

Applicant: Gerard McCarthy ,  Roger Bowles

Inventor： Gerard McCarthy ,  Roger Bowles

IPC: F02M17/04

CPC classification number: F02M17/04 ,  Y10S261/68

Abstract: A diaphragm-type carburetor has a high speed adjusting needle and a low speed/idle adjusting needle which are independently supplied with fuel from the metering chamber. The path for fuel to the low speed/idle needle has a valve which is controlled by the angular position of the throttle shaft such that when the throttle shutter is closed the valve is open whereas when the throttle shutter is open the valve is closed.

Abstract translation: 隔膜式化油器具有高速调节针和低速/空闲调节针，其独立地从计量室供应燃料。 燃料到低速/空闲针的路径具有由节流轴的角位置控制的阀，使得当节气门关闭时，阀打开，而当节气门打开时，阀关闭。

公开(公告)号：US4949692A

公开(公告)日：1990-08-21

申请号：US260594

申请日：1988-10-21

Applicant: John Devine

Inventor： John Devine

IPC: F02M7/18 ,  F02M17/04

CPC classification number: F02M7/18 ,  F02M17/04 ,  Y10S261/68

Abstract: A diaphragm type carburetor comprising a main body portion defining a venturi having an air intake side and an engine outlet side. The carburetor has a throttle shutter mounted within the venturi between the air intake side and the engine outlet side, and a metering chamber supplies fuel into the venturi via a main discharge port. The main discharge port opens into the venturi on the air intake side of the throttle shutter. A monitoring means (FIG. 3) is provided to monitor an engine parameter and an electrically controlled valve means is provided to adjust the fuel flow through the main discharge port into the venturi. The valve means is responsive to an electrical signal generated by the monitoring means in response to the engine parameter.

Abstract translation: 一种隔膜式化油器，包括限定具有进气侧和发动机出口侧的文氏管的主体部。 化油器具有安装在进气侧和发动机出口侧之间的文氏管内的节流阀，并且计量室通过主排出口将燃料供应到文丘里管中。 主排气口通向节流阀进气侧的文丘里管。 提供监测装置（图3）以监测发动机参数，并且提供电控阀装置以调节通过主排出口的燃料流入文丘里管。 阀装置响应于发动机参数响应由监控装置产生的电信号。

公开(公告)号：US4944897A

公开(公告)日：1990-07-31

申请号：US306806

申请日：1989-02-03

Applicant: Bo C. Andreasson

Inventor： Bo C. Andreasson

IPC: F02M5/10 ,  F02M15/00 ,  F02M17/04 ,  F02M37/20

CPC classification number: F02M17/04 ,  F02M15/00 ,  F02M37/20 ,  F02M5/10 ,  F02D2200/0606 ,  Y10S261/68 ,  Y10S261/81

Abstract: An arrangement for limiting the temperature in a carburetor etc. of an engine prevents evaporation of fuel at a temporary stop in the operation of the engine. A receptacle (30) integrated with the carburetor contains a material (31), e.g. paraffin, with a melting point over the normal operating temperature. At a temperature above this melting point the material absorbs melting heat from the environment causing a limitation of the temperature. In this limited temperature the fuel evaporates much slower and a direct start with the remaining fuel after the operating stop is quite possible.

Abstract translation: 用于限制发动机的化油器等中的温度的装置可防止在发动机运转中暂时停止燃料的蒸发。 与化油器一体化的容器（30）包含材料（31），例如 石蜡，熔点超过正常工作温度。 在高于该熔点的温度下，材料吸收来自环境的熔化热导致温度的限制。 在这个有限的温度下，燃料蒸发速度要慢得多，而在运行停止之后，剩余燃料就可以直接开始。

公开(公告)号：US4861522A

公开(公告)日：1989-08-29

申请号：US189129

申请日：1988-05-02

Applicant: Reinhard Gerhardy ,  Hans Holderle ,  Jurgen Wolf ,  Werner Vonderau

Inventor： Reinhard Gerhardy ,  Hans Holderle ,  Jurgen Wolf ,  Werner Vonderau

IPC: F02M3/02 ,  F02M7/12 ,  F02M17/04

CPC classification number: F02M3/02 ,  F02M17/04 ,  Y10S261/68 ,  Y10T137/86847

Abstract: Disturbances can occur in handheld portable tools driven by internal combustion engines because the idle-nozzle system and the main-nozzle system influence each other. The carburetor of the invention prevents this disturbing influence and provides a control of the engine which is proportional to speed. The carburetor includes a control member which closes off the main nozzle during idle operation and the idle nozzle during operation under load in dependence upon the position of the throttle flap.

Abstract translation: 由内燃机驱动的手持便携式工具可能会发生干扰，因为怠速喷嘴系统和主喷嘴系统相互影响。 本发明的化油器防止这种干扰的影响并提供与速度成比例的发动机的控制。 化油器包括控制构件，该控制构件根据节气门瓣的位置在空载操作期间封闭主喷嘴和负载操作期间的怠速喷嘴。