公开(公告)号：US06561495B2

公开(公告)日：2003-05-13

申请号：US09970228

申请日：2001-10-03

申请人： John C. Woody

发明人： John C. Woody

IPC分类号： F02M116

CPC分类号： F02M37/16 ,  F02M1/16 ,  Y10S261/08

摘要： A carburetor with a manual priming pump having an integrated fuel drain which provides both the engine manufacturer and end user with an easy way to drain fuel from a fuel chamber of the carburetor. The priming pump has a pump chamber defined by a resilient priming bulb. The pump chamber generally communicates between the fuel chamber and a fuel-and-air mixing passage of the carburetor body and is preferably positioned above the fuel chamber. The dual function of the manual priming pump, prime or drain, is switched by a valve with a rotatable selector member received between a seat and the resilient priming bulb of the pump. The selector member moves between a drain position and a priming position thus enabling draining of the fuel chamber or priming of the carburetor via successive manual depressions of the priming bulb.

摘要翻译： 具有手动起动泵的化油器具有集成的燃油排放装置，为发动机制造商和最终用户提供从燃料室的燃料室排出燃料的简单方法。 起动泵具有由弹性起动灯泡限定的泵室。 泵室通常在燃料室和化油器主体的燃料和空气混合通道之间连通，并且优选地位于燃料室的上方。 手动起动泵的主要功能是通过带有可旋转的选择器构件的阀来切换，该可旋转的选择器构件容纳在座椅和泵的弹性起泡泡之间。 选择器构件在排水位置和起动位置之间移动，从而能够经由连续手动按压起泡泡泡来排出燃料室或化油器的启动。

公开(公告)号：US06494192B1

公开(公告)日：2002-12-17

申请号：US09879726

申请日：2001-06-12

申请人： William K. Capshaw ,  John C. Hedrick ,  David W. Naegeli ,  Michael G. Ross

发明人： William K. Capshaw ,  John C. Hedrick ,  David W. Naegeli ,  Michael G. Ross

IPC分类号： F02M116

CPC分类号： F02M37/20

摘要： An on-board fuel vapor recovery system draws vapors from a fuel tank, compresses the vapors, and then cools the compressed vapors to form a condensate liquid fuel which is stored in an auxiliary condensate tank for introduction to an engine for enhanced cold start operation.

摘要翻译： 车载燃料蒸汽回收系统从燃料箱抽取蒸汽，压缩蒸汽，然后冷却压缩蒸汽，形成冷凝液体燃料，储存在辅助冷凝水箱中，引入发动机以加强冷启动运行。

公开(公告)号：US06536747B2

公开(公告)日：2003-03-25

申请号：US09909540

申请日：2001-07-20

申请人： Michael P. Burns ,  George M. Pattullo

发明人： Michael P. Burns ,  George M. Pattullo

IPC分类号： F02M116

CPC分类号： F02M1/04 ,  F02M3/12

摘要： A carburetor preferably of a diaphragm type for an internal combustion engine has a low speed circuit for starting and idling of a cold engine. An air bleed line of the low speed circuit communicates between an inlet of a fuel and air mixing passage of the carburetor and an emulsifying chamber of the low speed circuit. Fuel flows to the emulsifying chamber from a fuel metering chamber and is regulated by a low speed idling adjustment needle screw. The bleed air and the fuel mixes within the emulsifying chamber and flows into the mixing passage between the throttle valve and the outlet of the mixing passage. Promoting this flow is a high vacuum produced by cranking and idling of the engine and accentuated by the substantially closed throttle valve. The fuel-and-air mixture is rich during cold idling as a result of the closed air bleed line. When the engine warms up, the air bleed line is opened via the restrictor valve.

摘要翻译： 优选用于内燃机的隔膜式的化油器具有用于冷发动机起动和空转的低速电路。 低速回路的排气管路在燃料的入口与化油器的空气混合通道和低速回路的乳化室之间连通。 燃料从燃料计量室流向乳化室，并由低速空转调节针螺丝调节。 排出空气和燃料在乳化室内混合并流入节流阀和混合通道出口之间的混合通道。 促进这种流动是由发动机的起动和空转产生的高真空度，并且由基本上闭合的节流阀强调。 由于封闭的排气管道，燃料和空气混合物在冷空闲期间是富有的。 当发动机加热时，排气管路通过限流阀打开。

公开(公告)号：US06799545B2

公开(公告)日：2004-10-05

申请号：US10162458

申请日：2002-06-03

申请人： Scott R Shaw

发明人： Scott R Shaw

IPC分类号： F02M116

CPC分类号： F02M1/16

摘要： A carburetor start pump circuit, for starting an engine has an auxiliary fuel pump mounted on a relatively standard carburetor body, a start pulse passage extending through the carburetor body to the auxiliary fuel pump, and a fuel circuit having an intake side which extends from a metering chamber of the carburetor body to the auxiliary fuel pump and a discharge side which is interconnected to the intake side and extends from the auxiliary fuel pump to a throttle bore in the air intake of the carburetor body. To prevent the engine from stalling, a restriction jet is placed within the start pulse passage to prevent the auxiliary fuel pump from discharging fuel into the throttling bore when the engine transmits pulses at high frequencies.

摘要翻译： 用于启动发动机的化油器启动泵回路具有安装在相对标准化油器主体上的辅助燃料泵，延伸穿过化油器主体到辅助燃料泵的启动脉冲通道，以及燃料回路，其具有从一个 化油器主体的计量室到辅助燃料泵，以及排放侧，其与吸入侧互连并从辅助燃料泵延伸到化油器主体的进气口中的节流孔。 为了防止发动机停转，在起动脉冲通道内设置限流喷射器，以防止当发动机以高频率发射脉冲时辅助燃料泵将燃料排放到节流孔中。

公开(公告)号：US06481403B1

公开(公告)日：2002-11-19

申请号：US09710003

申请日：2000-11-10

申请人： Jerry J. Ashcraft ,  Jose Govea ,  Karl P. Richter ,  Randy M. Sherman

发明人： Jerry J. Ashcraft ,  Jose Govea ,  Karl P. Richter ,  Randy M. Sherman

IPC分类号： F02M116

CPC分类号： F02M17/04 ,  F02M1/08 ,  Y10S261/08

摘要： A diaphragm type carburetor which has a purge system to remove air and fuel vapor from the carburetor and to fill it with liquid fuel prior to starting an engine fed by the carburetor. The purge system has a primer valve actuated by moving a choke valve of the carburetor to its closed position to inject a small volume of liquid fuel into a throttle bore to provide a richer fuel and air mixture to the engine to facilitate starting it. Desirably, the small volume of liquid fuel is injected into the throttle bore in response to closing of the choke valve without requiring any additional steps such as depressing a button on the carburetor, to do so. Preferably, the choke valve is carried on a shaft which has at least one detent formed therein to provide a camming surface which actuates the primer valve as the choke valve is rotated from its open position to its closed position. Preferably, the choke valve shaft has a pair of detents. The primer valve is partially received by one detent when the choke valve is fully opened to close the primer valve and prevent any fluid flow therethrough. A second detent partially receives the primer valve to also close the primer valve after the choke valve has been moved to its fully closed position. The camming surface is disposed between the two detents relative to the movement of the choke valve to temporarily open the primer valve and inject the desired quantity of liquid fuel into the throttle bore to assist starting the engine when the choke valve is moved between its open and closed positions.

摘要翻译： 隔膜式化油器具有吹扫系统，以从化油器中除去空气和燃料蒸汽，并在起动由化油器供给的发动机之前用液体燃料填充。 吹扫系统具有通过将化油器的阻塞阀移动到其关闭位置而致动的底漆阀，以将少量液体燃料注入到节流孔中，以向发动机提供更丰富的燃料和空气混合物以便于启动。 理想地，响应于阻塞阀的关闭，将小体积的液体燃料注入到节流孔中，而不需要任何附加步骤，例如按下化油器上的按钮，这样做。 优选地，阻流阀被承载在具有形成在其中的至少一个制动器的轴上，以提供当阻流阀从其打开位置旋转到其关闭位置时致动底漆阀的凸轮表面。 优选地，阻风阀轴具有一对棘爪。 当止回阀完全打开时，底漆阀部分地被一个制动器接收，以关闭底漆阀并防止任何流体流过其中。 在阻塞阀已经移动到其完全关闭位置之后，第二制动器部分地接收底漆阀以还关闭底漆阀。 凸轮表面相对于阻流阀的运动设置在两个棘爪之间，以临时打开底漆阀，并将所需量的液体燃料喷射到节流孔中，以在扼流阀在其打开和关闭之间移动时帮助启动发动机 封闭职位。

公开(公告)号：US06557833B1

公开(公告)日：2003-05-06

申请号：US09693576

申请日：2000-10-20

申请人： David Roth

发明人： David Roth

IPC分类号： F02M116

CPC分类号： F02M1/16 ,  Y10S261/08

摘要： A priming system for an engine carburetor. The priming system includes a passageway having a first end in fluid flow communication with a variable volume chamber of a primer bulb and a second end in fluid flow communication with a fuel well. The second end of the passageway opens into the fuel well below a static priming fuel level which is in said fuel well and which at least partially extends into said passageway.

摘要翻译： 用于发动机化油器的起动系统。 起动系统包括通道，其具有与底漆灯泡的可变容积室流体流动连通的第一端和与燃料井流体连通的第二端。 通道的第二端通向位于所述燃料井中并且至少部分地延伸到所述通道中的静态起动燃料水平面下方的燃料井。

公开(公告)号：US06533254B1

公开(公告)日：2003-03-18

申请号：US09971839

申请日：2001-10-05

申请人： Timothy K. Grifka ,  Bradley D. Hilbig ,  Anthony M Kueffner ,  Paul S. Learman

发明人： Timothy K. Grifka ,  Bradley D. Hilbig ,  Anthony M Kueffner ,  Paul S. Learman

IPC分类号： F02M116

CPC分类号： F02M17/04 ,  F02M1/16 ,  Y10S261/08 ,  Y10T137/7882 ,  Y10T137/7883

摘要： A carburetor for a small internal combustion engine has a manual priming fuel pump with a resilient valve for allowing fuel flow in a first direction and for preventing fuel flow in a second direction. The resilient valve is reinforced with longitudinally extending ribs to prevent recirculation of fuel through an outlet orifice of the valve in a running engine. The outlet orifice is defined by a distal end of a tubular portion of the valve press fitted and projecting into an outlet passage that communicates with a pump chamber defined by a resilient domed cap. The ribs project laterally outward from the tubular portion within the outlet passage. Integral with an opposite end of the resilient valve is a head which flexes outward to open an inlet passage which then communicates with the pump chamber.

摘要翻译： 用于小型内燃机的化油器具有手动起动燃料泵，其具有用于允许燃料沿第一方向流动并用于防止燃料在第二方向上流动的弹性阀。 弹性阀通过纵向延伸的肋来加强，以防止燃料通过运行的发动机中的阀的出口孔再循环。 出口孔由阀压合器的管状部分的远端限定，并且突出到与由弹性圆顶帽限定的泵室连通的出口通道中。 肋条从出口通道内的管状部分横向向外突出。 与弹性阀的相对端成一体是向外弯曲以打开入口通道的头部，该入口通道然后与泵室连通。