公开(公告)号：US5562869A

公开(公告)日：1996-10-08

申请号：US287134

申请日：1994-08-08

申请人： Lloyd J. Drahos ,  Guy W. Hostetter

发明人： Lloyd J. Drahos ,  Guy W. Hostetter

IPC分类号： F02M19/035 ,  F02M19/03

CPC分类号： F02M19/035 ,  Y10S261/01 ,  Y10S261/39

摘要： Apparatus for atomizing fuel in a carburetor having a fuel inlet. The apparatus includes a mechanism for improved atomization of fuel leaving the fuel inlet. A mechanism is included for adjusting the atomization of fuel by adjusting the atomizing fuel mechanism relative to the fuel inlet. The atomizing fuel mechanism is supported within the carburetor. The support may extend through the carburetor housing or be formed integral the carburetor housing. Alternatively, a support may be carried by the fuel inlet.

摘要翻译： 具有燃料入口的化油器中的燃料雾化装置。 该装置包括用于改善离开燃料入口的燃料雾化的机构。 包括用于通过相对于燃料入口调节雾化燃料机构来调节燃料雾化的机构。 雾化燃料机构支撑在化油器内。 支撑件可以延伸穿过化油器壳体或形成为化油器外壳的一体。 或者，支撑件可以由燃料入口承载。

公开(公告)号：US5386145A

公开(公告)日：1995-01-31

申请号：US62054

申请日：1993-05-14

申请人： George A. Boswell

发明人： George A. Boswell

IPC分类号： F02M9/06 ,  F02M9/02 ,  F02M17/04 ,  F02M19/08 ,  F02M19/03

CPC分类号： F02M9/02 ,  F02M17/04 ,  F02M19/08 ,  Y10S261/39 ,  Y10S261/68

摘要： In a carburetor for an internal combustion engine, the improvement embodying an air flow surface disposed strategically in a venturi or air flow passageway of the carburetor, the air flow surface providing enhanced air flow velocity characteristics over a region thereof relative to the free stream velocity over the air flow surface, and an orifice located adjacent to the air flow surface in the vicinity of the region of enhanced air flow velocity so as to provide a vacuum signal through the orifice which corresponds substantially proportionally to the air flow velocity through the venturi or air flow passageway, the vacuum signal being usable for improving fuel delivery characteristics to the venturi as well as for other purposes. Several methods for incorporating the present invention into existing carburetor constructions are likewise disclosed.

摘要翻译： 在用于内燃机的化油器中，改进体现了在气化器的文氏管或气流通道中策略地布置的气流表面，空气流表面相对于自由流速度在其一个区域上提供增强的气流速度特性 空气流动表面和在增强的空气流速区域附近位于空气流动表面附近的孔口，以便通过孔口提供真空信号，该真空信号基本上与通过文氏管或空气的空气流速成比例地对应 流动通道，真空信号可用于改善对文丘里管的燃料输送特性以及用于其它目的。 同样公开了将本发明结合到现有化油器结构中的几种方法。

公开(公告)号：US5232164A

公开(公告)日：1993-08-03

申请号：US844529

申请日：1992-03-02

申请人： Darrel R. Resch ,  Murray K. Lemons ,  Elisha W. Erb

发明人： Darrel R. Resch ,  Murray K. Lemons ,  Elisha W. Erb

IPC分类号： B05B1/26 ,  B05B7/04

CPC分类号： B05B1/265 ,  B05B7/0433 ,  Y10S261/39

摘要： An atomizer device comprising a body member having a gas nozzle defined by smooth converging sidewalls. A first smooth surface is disposed in a substantially perpendicular relationship to the nozzle, and a second smooth surface is disposed in an abutting parallel relationship with the first smooth surface, with a very small spacing existing between the two surfaces. An edge of the surfaces is disposed adjacent a propellant gas flowing through the gas nozzle, with the edge of the first surface being thin and jutting a short distance into the outlet of the gas nozzle. The edge of the second surface is set back from the edge of the first surface, thus defining a filming surface adjacent the edge of the first surface. A flowable liquid under pressure is directed to flow through the narrow space between the abutting first and second surfaces, toward the flow of propellant gas through the nozzle, and emit as a thin film on the filming surface on the first surface. The propellant gas flowing through the nozzle is caused by the jutting edge of the first surface to be slightly separated from the thin edge of the first surface at the filming surface. This slight separation does not prevent the entrainment into the gas of ribbons of liquid from the filming surface, which liquid breaks up into extremely small particles in the propellant gas flow.

摘要翻译： 一种雾化装置，包括具有由平滑会聚的侧壁限定的气体喷嘴的本体构件。 第一光滑表面以与喷嘴基本垂直的方式设置，并且第二光滑表面以与第一平滑表面邻接的平行关系设置，两个表面之间存在非常小的间隔。 表面的边缘邻近流过气体喷嘴的推进剂气体设置，第一表面的边缘较薄并且突出短距离进入气体喷嘴的出口。 第二表面的边缘从第一表面的边缘回缩，从而限定与第一表面的边缘相邻的成膜表面。 在压力下的可流动液体被引导以流过邻接的第一和第二表面之间的狭窄空间，朝向通过喷嘴的推进剂气体的流动，并且在第一表面上的成膜表面上作为薄膜发射。 流过喷嘴的推进剂气体由第一表面的突出边缘在成膜表面与第一表面的薄边缘稍微分离。 这种轻微的分离并不能防止从成膜表面夹带液体的气体，这种液体在推进剂气体流中分解成非常小的颗粒。

公开(公告)号：US5053170A

公开(公告)日：1991-10-01

申请号：US594654

申请日：1990-10-09

申请人： Lloyd J. Drahos

发明人： Lloyd J. Drahos

IPC分类号： F02M19/08 ,  F02B1/04 ,  F02M19/035

CPC分类号： F02M19/035 ,  F02B1/04 ,  Y10S261/39

摘要： A universal and removable fuel atomizing device for known carburetors having a venturi stack into which there exists a main fuel discharge. The fuel atomizing device is comprised of an atomizing disc preferably having a convex top surface and a substantially flat bottom surface. The disc suitably has a peripheral atomizing edge and is concentrically supported on the top lip of the venturi stack and held thereat by suitably securing means.

摘要翻译： 用于已知化油器的通用和可拆卸燃料雾化装置，其具有文丘里堆叠，其中存在主燃料排放物。 燃料雾化装置由雾化盘组成，其优选地具有凸顶表面和基本平坦的底表面。 圆盘适当地具有周边雾化边缘，同心地支撑在文氏管堆叠的顶部唇缘上并通过适当的固定装置保持在其上。

公开(公告)号：US5043105A

公开(公告)日：1991-08-27

申请号：US495404

申请日：1990-03-19

申请人： Lloyd J. Drahos

发明人： Lloyd J. Drahos

IPC分类号： F02B1/04 ,  F02M19/035

CPC分类号： F02M19/035 ,  F02B1/04 ,  Y10S261/39

摘要： A fuel atomizing device for carburetors having a main discharge nozzle located within at least one venturi. The device comprises a hollow body extending downwardly and outwardly with a bottom opening adapted to slide over the main discharge nozzle in a sleeve-like arrangement. A fuel atomizing disc is supported concentrically by the body having top and bottom surfaces and an outer diameter atomizing edge. Four equally spaced apertures in the body below the disc are in flow communication with the body's bottom opening and, hence, the main discharge nozzle of the carburetor for evenly dispersing the fuel onto the bottom surface of the disc. A retaining cap is concentrically oriented on the body below the apertures for sealably seating the body upon the venturi. A threaded top opening in the body is adapted for receiving a set screw which permits movement of the screw by the apertures for constricting the apertures so that the atomizing device adjustably atomizes and disperses the fuel. Because of the air depression or vacuum in the vicinity of the venturi stack 14, the gasoline readily dispenses onto the bottom of the disc and is completely atomized as it is pulled off the outer diameter edge by action of the air flow downwardly through the carburetor which impinges upon the top surface of the disc creating a further vacuum under the atomizing disc.

摘要翻译： 一种用于化油器的燃料雾化装置，其具有位于至少一个文丘里管内的主排放喷嘴。 该装置包括一个向下和向外延伸的中空体，底部开口适于以套筒状布置在主排放喷嘴上方滑动。 燃料雾化盘由具有顶表面和底表面的主体和外径雾化边缘同心地支撑。 在盘下面的主体中的四个等间隔的孔与主体的底部开口以及因此的化油器的主排放喷嘴流体连通，用于将燃料均匀地分散到盘的底表面上。 保持盖同心地定向在孔下面的主体上，用于将身体密封地安置在文丘里管上。 主体中的带螺纹的顶部开口适于接收固定螺钉，该固定螺钉允许螺钉由孔径移动以收缩孔，使得雾化装置可调节地使燃料雾化和分散。 由于文丘里堆14附近的空气压下或真空，汽油容易地分配到盘的底部，并且当气流向下通过化油器的作用被从外径边缘拉出时被完全雾化， 撞击在盘的顶表面上，在雾化盘下产生进一步的真空。

公开(公告)号：US4574760A

公开(公告)日：1986-03-11

申请号：US689361

申请日：1985-01-07

申请人： Colin Jones ,  William J. Clemens

发明人： Colin Jones ,  William J. Clemens

IPC分类号： F02M29/04 ,  F02D3/00 ,  F02M9/127 ,  F02M69/00 ,  F02M69/04 ,  F02M69/46 ,  F02M9/14

CPC分类号： F02M9/1275 ,  F02M69/04 ,  F02M69/46 ,  Y10S261/39 ,  Y10S261/56 ,  Y10S261/82

摘要： A fuel injection system of the single point, throttle body type in which a fuel injector is located centrally above the inlet to an air throttling body that contains a variable venturi consisting of a plug and nozzle assembly wherein the plug includes a fuel dispersion plate directing the fuel towards a movable nozzle together defining a convergent-divergent flow air that is variable in area in response to the dynamic pressure of the air against it at higher air flows or alternately responsive to the suction of the engine at low air flows to be moved to a position providing essentially a constant air velocity flowing past the fuel under all conditions of operation to shear the fuel and thereby atomize the same for an economical and efficient operation of the engine.

摘要翻译： 单点式节气门体的燃料喷射系统，其中燃料喷射器位于入口的中心上方，该空气节流体包含由插塞和喷嘴组件组成的可变文丘里管，其中所述插塞包括引导所述燃料分散板 燃料朝着可移动的喷嘴一起限定出会聚 - 发散的流动空气，其响应于空气在较高空气流动时的空气的动态压力而可变区域，或者交替地响应于在低空气流下的发动机的吸力被移动到 在所有操作条件下提供基本上流过燃料的恒定空气速度的位置，以剪切燃料，从而使其雾化，以便发动机的经济和有效的操作。

公开(公告)号：US4559185A

公开(公告)日：1985-12-17

申请号：US675444

申请日：1984-11-27

申请人： Toshiaki Seto ,  Hideo Yamamoto ,  Yoshiji Kobayashi

发明人： Toshiaki Seto ,  Hideo Yamamoto ,  Yoshiji Kobayashi

IPC分类号： F02M7/17 ,  F02M7/28 ,  F02M19/10 ,  F02M9/02

CPC分类号： F02M7/17 ,  F02M19/10 ,  F02M7/28 ,  Y10S261/39 ,  Y10S261/56

摘要： A variable venturi type carburetor including both inner and outer venturis, a main nozzle for injecting main fuel into the inner venturi and a piston valve displaceably mounted on the outer venturi to move under the influence of negative pressure transmitted from the intake passage. The carburetor further includes an auxiliary fuel nozzle for feeding auxiliary fuel to the outer venturi in response to movement of the piston valve. The auxiliary fuel nozzle is disposed on the outer venturi adjacent to the main nozzle and the center axes of both the nozzles are located on the same or substantially same plane extending in the direction of the intake passage. A bleed air valve is mounted midway of the atmospheric pressure introduction passage which is branched from the auxiliary fuel passage so as to open the passage when higher negative pressure is transmitted from manifold. Further, a vacuum switching valve is mounted midway of the atmospheric pressure introduction passage extending from the negative pressure chamber on the valve piston so as to open the passage when higher negative pressure is transmitted from manifold. One end of each of the atmospheric pressure introduction passages for both the valves is opened to the atmosphere.

摘要翻译： 包括内部和外部通气管的可变文丘里型化油器，用于将主燃料喷射到内文丘里管的主喷嘴和可移动地安装在外文丘里管上的活塞阀，以在从进气通道传递的负压的影响下移动。 化油器还包括用于响应于活塞阀的运动将辅助燃料供给到外文丘里管的辅助燃料喷嘴。 辅助燃料喷嘴设置在与主喷嘴相邻的外文丘里管上，两个喷嘴的中心轴线位于沿着进气通道的方向延伸的相同或基本相同的平面上。 排放空气阀安装在大气压力引入通道的中间，该通道从辅助燃料通道分支，以便在从歧管传递较高的负压时打开通道。 此外，真空切换阀安装在大气压引入通道的中间，从阀活塞上的负压室延伸，以便在从歧管传递更高的负压时打开通道。 用于两个阀的每个大气压力引入通道的一端向大气开放。

公开(公告)号：US4519957A

公开(公告)日：1985-05-28

申请号：US650566

申请日：1984-09-13

申请人： Takaaki Ito ,  Takashi Kato

发明人： Takaaki Ito ,  Takashi Kato

IPC分类号： F02M7/17 ,  F02M9/06

CPC分类号： F02M7/17 ,  Y10S261/39

摘要： The main fuel nozzle is located a predetermined distance inside from the end of a bridge formed in the upstream portion of the barrel of the carburetor, and the piston head of the suction piston is designed to be overlapped by the bridge during the idle condition. A notch is also formed on the downstream side of the main nozzle to shift the fuel running along the metering needle during idling to the main nozzle by a diffusing air flow, and a fuel guide is provided extending from the notch to the barrel wall to guide the fuel, supplied from the main nozzle during idling, along the fuel guide surface to the barrel wall.

摘要翻译： 主燃料喷嘴位于形成在化油器的桶的上游部分中的桥的端部内部的预定距离处，并且吸入活塞的活塞头在空转状态期间被设计成与桥重叠。 在主喷嘴的下游侧还形成有凹口，用于通过扩散空气流将空转期间沿着计量针运转的燃料移动到主喷嘴，并且设置从凹口到筒壁延伸到引导管 在空转期间从主喷嘴供应的燃料沿着燃料引导表面到桶壁。

公开(公告)号：US4434110A

公开(公告)日：1984-02-28

申请号：US246402

申请日：1981-03-23

申请人： William Highfield

发明人： William Highfield

IPC分类号： F02M7/22 ,  F02M9/127 ,  F02M37/20 ,  F02M69/24 ,  F02M69/42 ,  F02M9/12

CPC分类号： F02M9/127 ,  F02M37/20 ,  F02M69/24 ,  F02M69/42 ,  F02M7/22 ,  Y10S261/19 ,  Y10S261/39 ,  Y10S261/74 ,  Y10T137/2617 ,  Y10T137/264

摘要： A carburetor and associated control apparatus for an internal combustion engine. The carburetor includes a carburetor head having a fuel inlet conduit and an air inlet conduit communicating with a fuel mixing chamber. The carburetor further includes metering means for controlling the amount of fuel and air entering the mixing chamber. The mixing chamber connects to an expansion chamber through a control orifice in the carburetor head. The carburetor also includes a carburetor housing having a throat that communicates with the expansion chamber and with an air delivery passage. Air entering the throat is metered with an air valve that is moved with respect to the air delivery passage in correspondence with the fuel metering means.1. Technical FieldThis invention relates generally to fluid distribution apparatus having multiple valves and, more particularly, to carburetors and associated control apparatus for internal combustion engines.2. Background ArtCarburetors perform three functions for internal combustion engines when delivering a gaseous mixture of fuel and air to the cylinders. The first function is to control the speed of the engine by controlling the absolute pressure in the intake manifold of the engine. The second function is to introduce and meter the fuel into the air stream going to the cylinders. The third function is to mix the fuel with the air so that a uniform mixture is produced.One problem with conventional carburetors is that the fuel within the fuel reservoir or float bowl is subject to inertial and gravity forces. The inertial forces are generated by cornering, stopping, and accelerating. The gravity forces stem from hill climbing and from operating at different attitudes. Both sets of forces place operating limitations on engines because they vary the relationship of the fuel and float bowl with respect to the main jets.A further problem with conventional carburetors is the emission of unburned hydrocarbons from the carburetor. When fuel enters the float bowl and drops in pressure to atmospheric pressure, a portion of the fuel is immediately vaporized and can be released unburned to the atmosphere. In addition, heat from an engine that is not in operation can boil the fuel remaining in the float bowl and likewise cause the emission of unburned hydrocarbons.An additional problem with conventional carburetors is in providing a uniform mixture to the engine. One aspect of this problem stems from using a butterfly valve to control the pressure drop across the carburetor. At any angle less than wide open throttle, the butterfly valve deflects the flow through the carburetor. Also, when fuel impinges on the butterfly valve, the denser parts of the mixture tend to come off the lower side of the butterfly valve. Another aspect of the problem occurs at idle and low speeds when there is not sufficient air flow through the carburetor to operate the main venturi system. In this case fuel is introduced into the air stream in the carburetor via an idle port located below the butterfly valve and via a transfer slot located just above the idle port. The idle port and the transfer slot are located on just one side of the throat and hence cannot provide a uniform distribution of fuel across the throat of the carburetor.A typical four barrel carburetor contains more than one hundred parts and is consequently complicated to manufacture and to assemble. These carburetors also require critical adjustments both during installation and at subsequent times. This complexity means that conventional carburetors are expensive and may be subject to frequent repair.Recently there has been wide interest in converting carburetors over to alternative fuels such as ethanol and methanol. The stoichiometric air fuel ratio for these popular alcohol mixtures is much higher than for gasoline. In other words, as the percentage of alcohol is increased in the fuel, the engine tends to run leaner. In order to use a gasoline fuel containing more than ten percent (10%) alcohol, the fuel passages in a conventional carburetor must be substantially enlarged and the jets changed. Such a conversion almost mandates replacement of a conventionally constructed carburetor.Work in this area of technology includes U.S. Pat. No. 4,137,284 entitled "Carburetor", issued Jan. 30, 1979 to Barbee, and U.S. Pat. No. 3,943,205 entitled "Internal Combustion Engine", issued Mar. 9, 1976 to Oliver.The present invention is directed to overcoming one or more of the problems as set forth above.DISCLOSURE OF THE INVENTIONIn one aspect of the present invention a carburetor for an internal combustion engine is contemplated. This carburetor includes a carburetor head having a fuel inlet conduit and an air inlet conduit communicating with a fuel mixing chamber. The carburetor further includes metering means for controlling the amount of fuel and air entering the mixing chamber. The mixing chamber connects to an expansion chamber through a control orifice in the carburetor head. The carburetor also includes a carburetor housing having a throat that communicates with the expansion chamber and with an air delivery passage. Air entering the throat is metered with an air valve that is moved with respect to the air delivery passage in correspondence with the fuel metering means.In the present invention the problem of inertial and gravitational forces acting on the fuel in the fuel bowl is overcome by eliminating the fuel bowl and all other fuel reservoirs in the carburetor. Fuel metering is no longer affected by inertia and the carburetor can be operated at any attitude without disturbing the process of fuel metering. Elimination of the fuel bowl also alleviates the problem of emitting unburned hydrocarbons. In the present invention vapor is not allowed to escape to the atmosphere.The present invention provides a uniform fuel mixture to the engine by first premixing the fuel with air first in a mixing chamber, and secondly in a centrally located expansion chamber and then lowering the momentum of the mixture so that it can flow radially outward and mix with the primary air along a 360.degree. circular front. This technique results in an extremely uniform mixture reaching the intake manifold of the engine.One feature of the present invention is the precise fuel metering that can be obtained. A single fuel metering circuit is used to provide all of the fuel to the carburetor from idle through full throttle. No artificial enrichment devices are required, such as idle feed circuits, low speed circuits, and accelerator pumps. In addition, the transitions between such circuits are avoided.A further feature of the present invention is its mechanical simplicity and use of few moving parts. The apparatus disclosed herein is less expensive to manufacture and to maintain than presently available carburetors. The use of only one fuel metering circuit also permits this carburetor to be easily controlled electronically and to be easily converted over to the use of alternative fuels.The present invention is adapted to incorporate a solenoid operated fuel valve. Fuel flow to the carburetor is terminated either when the engine is decclerated or when the ignition key is turned off. This feature substantially reduces fuel consumption.Other aspects, objects and advantages of this invention can be obtained from a study of the drawings, the disclosure, and the appended claims.

摘要翻译： 一种用于内燃机的化油器和相关控制装置。 化油器包括具有燃料入口管道和与燃料混合室连通的进气管道的化油器头。 化油器还包括用于控制进入混合室的燃料和空气的量的计量装置。 混合室通过化油器头中的控制孔连接到膨胀室。 化油器还包括具有与膨胀室连通的喉部和空气输送通道的化油器壳体。 进入喉咙的空气被计量与空气阀相对应于燃料计量装置相对于空气输送通道移动。

公开(公告)号：US4285888A

公开(公告)日：1981-08-25

申请号：US105605

申请日：1979-12-20

申请人： George Sahnas

发明人： George Sahnas

IPC分类号： F02M69/04 ,  F02M69/20 ,  F02M7/14

CPC分类号： F02M69/20 ,  F02M69/043 ,  Y10S261/39

摘要： A carburetor for use with internal combustion engines, wherein a jet spray of fuel is directed into the intake manifold of the engine, and the amount of fuel so sprayed under pressure is controlled by the movement of a diaphragm actuated in response to the volume of air entering the carburetor housing, so that the air-fuel mixture always will be in such proportions that all of the fuel will be burned, thereby substantially eliminating the exhaust of unused fuel to the atmosphere and the resulting air pollution, as well as increasing the engine's operating efficiency, and improving the economy.

摘要翻译： 一种与内燃机一起使用的化油器，其中燃料的喷射喷射被引导到发动机的进气歧管中，并且在压力下喷射的燃料的量由响应于空气体积致动的隔膜的运动来控制 进入化油器壳体，使得空气燃料混合物总是以这样的比例使得所有的燃料将被燃烧，从而基本上消除了未使用的燃料排放到大气中并导致空气污染，并且增加了发动机的 经营效益，改善经济。