公开(公告)号：US06698727B1

公开(公告)日：2004-03-02

申请号：US10294215

申请日：2002-11-13

申请人： Scott R. Shaw

发明人： Scott R. Shaw

IPC分类号： F02M1704

CPC分类号： F02M17/04 ,  Y10S261/68 ,  Y10S261/74

摘要： 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.

摘要翻译： 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：US06354571B1

公开(公告)日：2002-03-12

申请号：US09654881

申请日：2000-09-05

申请人： Reinhard Gerhardy

发明人： Reinhard Gerhardy

IPC分类号： F02M1704

CPC分类号： F02M1/16 ,  F02M1/10 ,  F02M17/04 ,  Y10S261/68

摘要： A membrane carburetor (1) for an internal combustion engine includes a control chamber (2) delimited by a membrane. The control chamber (2) is connected via a feed line (8) to a fuel tank (9). The feed line (8) is cleared with the deflection of the membrane (3) because of underpressure in the control chamber (2). The control chamber (2) is connected via at least one intake opening (16, 17) with an air-intake channel (14) to the engine. As start-assist devices for the engine, a scavenging pump (10) and an injection pump (20) are provided. The scavenging pump (10) is provided in a return line (13) between the control chamber (2) and the fuel tank (9). The fuel can be pumped into the air-intake channel (14) with a displacement piston (21) of the injection pump (20). The displacement piston (21) is longitudinally guided in a cylinder (22) and delimits a pump chamber (24). The pump chamber (24) is connected via an injection line (30) to a feed (18) of the intake openings (16, 17). The piston stroke of the displacement piston (21) is limited by a stop (26) which is adjusted in stroke direction (31) by an adjusting element (23) in dependence upon temperature. This arrangement ensures a reliable start of the engine with an easy operability of the start-assist devices.

摘要翻译： 用于内燃机的膜式化油器（1）包括由膜限定的控制室（2）。 控制室（2）经由进料管线（8）连接到燃料箱（9）。 由于控制室（2）中的负压，馈送线（8）被膜（3）的偏转清除。 控制室（2）经由至少一个进气口（16,17）与进气通道（14）连接到发动机。 作为用于发动机的启动辅助装置，提供清扫泵（10）和注射泵（20）。 清扫泵（10）设置在控制室（2）和燃料箱（9）之间的返回管线（13）中。 燃料可以通过喷射泵（20）的位移活塞（21）泵入进气通道（14）。 位移活塞（21）在气缸（22）中纵向引导并限定泵室（24）。 泵室（24）经由注入管线（30）连接到进气口（16,17）的进料口（18）。 位移活塞（21）的活塞行程由通过调节元件（23）根据温度在行程方向（31）上调节的止动件（26）来限制。 这种布置确保了起动辅助装置易于操作的发动机的可靠起动。

公开(公告)号：US06523809B2

公开(公告)日：2003-02-25

申请号：US09815406

申请日：2001-03-22

申请人： John C. Woody

发明人： John C. Woody

IPC分类号： F02M1704

CPC分类号： F02M1/16 ,  F02M17/04 ,  Y10S261/68

摘要： A carburetor having a first valve to control the application of pressure pulses to a fuel metering assembly of the carburetor through a first flow path and a second valve which controls application of pressure pulses to the fuel metering assembly through at least a second flow path to provide an enriched fuel and air mixture to the engine to facilitate starting the engine and warming it up. The pressure pulses are preferably applied to a fuel metering diaphragm to actuate the diaphragm and cause a richer than normal fuel and air mixture to be delivered to the engine. Desirably, a maximum enrichment of the fuel and air mixture is obtained when both valves are open to facilitate starting the engine, and a lesser enrichment of the mixture may be obtained when only one valve is open to facilitate warming the engine up after it is initially started.

公开(公告)号：US06446939B1

公开(公告)日：2002-09-10

申请号：US09650166

申请日：2000-08-29

申请人： Jeffrey C. Hoppe ,  Ronald H. Roche ,  Kevin L. Williams

发明人： Jeffrey C. Hoppe ,  Ronald H. Roche ,  Kevin L. Williams

IPC分类号： F02M1704

CPC分类号： F02M17/04 ,  F02M17/40 ,  F02M19/00 ,  Y10S261/08 ,  Y10S261/68

摘要： A modular diaphragm carburetor is provided which has a plurality of plates each with generally planar faces adapted to be mated and releasably connected together to facilitate manufacturing and assembling the carburetor and to permit various plates and components of the carburetor to be used in carburetors designed for use with different engine families. By providing a plurality of mated together plates, the machining of the passages through the carburetor is made dramatically easier when compared to the machining of a carburetor having a single body with end caps. Still further, the modular diaphragm design permits different plates and/or components of the carburetor to be used with other components to provide a carburetor having different performance characteristics and suitable for use with a different engine family. Therefore, a wide range of carburetors can be provided which have many of the same components to reduce the overall part count and to more economically manufacture and assemble a wide range of carburetors.

摘要翻译： 提供了一种模块化隔膜式化油器，其具有多个板，每个板具有大致平坦的面，其适于配合和可释放地连接在一起，以便于制造和组装化油器，并允许化油器的各种板和部件用于设计使用的化油器 与不同的发动机家庭。 通过设置多个配合在一起的板，当与具有端盖的单体的化油器的加工相比，通过化油器的通道的加工变得非常容易。 此外，模块式隔膜设计允许化油器的不同板和/或部件与其他部件一起使用，以提供具有不同性能特性并适用于不同发动机系列的化油器。 因此，可以提供广泛的化油器，其具有许多相同的组分以减少总体部件数量，并且更经济地制造和组装宽范围的化油器。

公开(公告)号：US06328288B1

公开(公告)日：2001-12-11

申请号：US09557083

申请日：2000-04-21

申请人： Reinhard Gerhardy

发明人： Reinhard Gerhardy

IPC分类号： F02M1704

CPC分类号： F02B25/20 ,  F02M13/02 ,  F02M13/023 ,  Y10S261/01 ,  Y10S261/68

摘要： A diaphragm-type carburetor is provided for a two-cycle engine, in a manually guided implement, that operates with layered scavenging. Formed in the carburetor housing is an intake channel portion in which is disposed a butterfly valve that is pivotably held by a shaft. Opening into the intake channel portion are fuel-conveying channels supplied from a fuel-filled control chamber that is formed on a longitudinal side of the intake channel portion in the carburetor housing and is separated from a compensation chamber by a diaphragm. Air for combustion is additionally supplied to the engine via an air channel formed in a functional component of the carburetor fixed on the housing thereof on a longitudinal side of the intake channel portion. The air channel is disposed approximately parallel to the intake channel portion and is guided from that end face of the carburetor that faces an air filter to the connecting side of the carburetor that faces the internal combustion engine. Disposed in the air channel is a throttle member that is rotatably held by a shaft, which is coupled together with the shaft of the butterfly valve by means of a transmission connection.

摘要翻译： 在手动导向工具中，为双冲程发动机提供隔膜式化油器，其通过层状扫气运行。 在化油器壳体中形成有进气通道部分，其中设置有由轴可枢转地保持的蝶阀。 进入入口通道部分的是从燃料填充控制室供给的燃料输送通道，其形成在化油器壳体中的进气通道部分的纵向侧上，并通过隔膜与补偿室分离。 通过形成在固定在其壳体上的化油器的功能部件中的空气通道，在进气通道部分的纵向侧，另外向发动机供给燃烧用空气。 空气通道大致平行于进气通道部分设置，并且从面向空气过滤器的化油器的端面被引导到面向内燃机的化油器的连接侧。 设置在空气通道中的节流构件是可旋转地保持在轴上的节流构件，其通过传动连接与蝶阀的轴联接在一起。

公开(公告)号：US06217008B1

公开(公告)日：2001-04-17

申请号：US09361174

申请日：1999-07-27

申请人： Hitoshi Abe ,  Hirohisa Ishikawa ,  Naoyuki Kamiya

发明人： Hitoshi Abe ,  Hirohisa Ishikawa ,  Naoyuki Kamiya

IPC分类号： F02M1704

CPC分类号： F02M17/04 ,  F02M37/046 ,  F02M37/20 ,  Y10S261/68 ,  Y10S261/83

摘要： In a diaphragm-type carburetor, a fuel vapor treating chamber is provided in a downstream fuel passage which interconnects a fuel pump operated in response to a pulsation pressure from a pulsation pressure generating source and an inlet bore in a constant-pressure fuel chamber. The fuel vapor treating chamber is located before the inlet bore, and a porous element for finely dividing fuel vapor is placed in the fuel vapor treating chamber. Thus, when a fuel vapor is generated in the fuel discharged from the fuel pump, a large amount of fuel vapor can be prevented from being ejected all at one time from a fuel nozzle by finely dividing the fuel vapor and introducing it along with the fuel into the constant-pressure fuel chamber, it is immediately passed toward the fuel nozzle, whereby the variation in air-fuel ratio of a fuel-air mixture can be suppressed to a very small level.

摘要翻译： 在隔膜式化油器中，燃料蒸汽处理室设置在下游燃料通路中，该燃料通道响应于来自脉动压力发生源的脉动压力而操作的燃料泵和恒压燃料室中的入口孔。 燃料蒸汽处理室位于入口孔之前，并且用于将燃料蒸汽精细分离的多孔元件放置在燃料蒸气处理室中。 因此，当在从燃料泵排出的燃料中产生燃料蒸气时，可以通过细分燃料蒸气并将其与燃料一起引入，从而可以防止大量的燃料蒸气从燃料喷嘴一次全部喷射出来 进入恒压燃料室，立即通向燃料喷嘴，由此燃料 - 空气混合物的空燃比的变化可以被抑制到非常小的水平。

公开(公告)号：US06715737B2

公开(公告)日：2004-04-06

申请号：US10226551

申请日：2002-08-23

申请人： William E. Galka ,  Bradley D. Hilbig ,  Ronald H. Roche ,  James E. Van Allen

发明人： William E. Galka ,  Bradley D. Hilbig ,  Ronald H. Roche ,  James E. Van Allen

IPC分类号： F02M1704

CPC分类号： F02M17/04 ,  F02M19/00 ,  Y10S261/68

摘要： A fuel metering system for a combustion engine carburetor utilizes a non-convoluted, planar, flexible diaphragm which does not require a molding process to form a traditional convolution. The diaphragm defines in part a pressure controlled fuel metering chamber on one side and a reference chamber at atmospheric pressure on the other side. During operation of the engine, sub-atmospheric pressure within a fuel and air mixing passage draws fuel from the metering chamber to mix with air for combustion within the engine. As pressure within the metering chamber thus decreases, the diaphragm flexes into metering chamber. The displacement of the diaphragm actuates a flow control valve of the metering system which flows pressurized make-up fuel into the metering chamber until the diaphragm returns to its datum position. Preferably, hardware of the flow control valve which is in direct contact with a surface of the diaphragm exposed to the metering chamber does not penetrate the diaphragm as the traditional rivet and washer assembly would. Therefore, manufacturing costs are reduced and any opportunity of leakage between the fuel metering chamber and reference chamber is eliminated. Preferably, the carburetor is of a manual external purge type in order to exert sufficient vacuum within the metering chamber to displace the metering diaphragm thus opening the flow control valve to purge the carburetor of unwanted fuel vapor and air prior to starting the engine. The novel planar diaphragm thereby resolves problems associated with traditional metering diaphragms such as variation in convolution datum height affecting flow control valve lever/diaphragm clearances, non-symmetric convolution axis or distorted convolution affecting diaphragm pressure response and recovery.

摘要翻译： 用于燃烧发动机化油器的燃料计量系统利用无卷积的平面的柔性隔膜，其不需要模制过程以形成传统的卷积。 隔膜部分地限定一侧的压力控制的燃料计量室和在另一侧的大气压下的参考室。 在发动机操作期间，燃料和空气混合通道内的次大气压力从计量室抽取燃料以与发动机内的空气混合燃烧。 由于计量室内的压力因此减小，隔膜弯曲进入计量室。 隔膜的位移致动计量系统的流量控制阀，该流量控制阀将加压的补充燃料流入计量室，直到隔膜返回到其基准位置。 优选地，流量控制阀的与暴露于计量室的隔膜的表面直接接触的硬件不像传统的铆钉和垫圈组件那样穿透隔膜。 因此，制造成本降低，并且消除了燃料计量室和参考室之间的任何泄漏的机会。 优选地，化油器是手动外部吹扫型，以便在计量室内施加足够的真空以移动计量隔膜，从而打开流量控制阀，以在启动发动机之前清除不想要的燃料蒸气和空气的化油器。 新颖的平面膜片因此解决了与传统计量隔膜相关的问题，例如影响流量控制阀杆/隔膜间隙的卷积基准高度的变化，非对称卷积轴或影响膜片压力响应和恢复的扭曲卷积。

公开(公告)号：US06702261B1

公开(公告)日：2004-03-09

申请号：US10349571

申请日：2003-01-22

申请人： Scott R. Shaw

发明人： Scott R. Shaw

IPC分类号： F02M1704

CPC分类号： F02M17/04 ,  F02D35/0069 ,  Y10S261/68 ,  Y10S261/74

摘要： 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.

公开(公告)号：US06622992B2

公开(公告)日：2003-09-23

申请号：US10094825

申请日：2002-03-11

申请人： John C. Woody

发明人： John C. Woody

IPC分类号： F02M1704

CPC分类号： F02M1/16 ,  F02M17/04 ,  Y10S261/68

摘要： A carburetor having a first valve to control the application of pressure pulses to a fuel metering assembly of the carburetor through a first flow path and a second valve which controls at least a second flow path to provide an enriched fuel and air mixture to the engine to facilitate starting the engine and warming it up. The pressure pulses are preferably applied to a fuel metering diaphragm to actuate the diaphragm and cause a richer than normal fuel and air mixture to be delivered to the engine. Desirably, a maximum enrichment of the fuel and air mixture is obtained when at least one valve is open to facilitate starting the engine, and a lesser enrichment of the mixture may be obtained by closing a valve to facilitate warming the engine up after it is initially started.

公开(公告)号：US06234457B1

公开(公告)日：2001-05-22

申请号：US09557273

申请日：2000-04-24

申请人： Yuzuru Yanaka ,  Mamoru Toda

发明人： Yuzuru Yanaka ,  Mamoru Toda

IPC分类号： F02M1704

CPC分类号： F02M17/04 ,  F02M19/03 ,  Y10S261/39 ,  Y10S261/68

摘要： Methods of operating a diaphragm type carburetor to facilitate the atomization of fuel in the diaphragm-type carburetor are disclosed. Particularly, methods of operating a diaphragm-type carburetor having a check valve installed in a fuel passage leading from a constant-fuel chamber to a main nozzle, and an air bleed passage connected at a position on the downstream side of the check valve are disclosed. Moreover, techniques for operating a diaphragm-type carburetor having a main nozzle including nozzle openings facing downstream with respect to the engine intake air flow are also disclosed, wherein the nozzle openings are located in a tubular member cutting across a central axial line of the venturi so that the tubular member bridges the neck of the venturi.

摘要翻译： 公开了一种操作隔膜型化油器以便于隔膜式化油器中的燃料雾化的方法。 具体地，公开了一种操作具有安装在从恒定燃料室引导到主喷嘴的燃料通道中的止回阀的隔膜式化油器和连接在止回阀的下游侧的排气通道的方法， 。 此外，还公开了一种用于操作具有主喷嘴的隔膜式化油器的技术，该主喷嘴包括相对于发动机进气流向下游的喷嘴开口，其中喷嘴开口位于穿过文丘里管的中心轴线上的管状构件中 使得管状构件桥接文丘里管的颈部。