公开(公告)号：US08240292B1

公开(公告)日：2012-08-14

申请号：US12543666

申请日：2009-08-19

申请人： Ronald H. Roche ,  Mark S. Swanson ,  John C. Woody

发明人： Ronald H. Roche ,  Mark S. Swanson ,  John C. Woody

IPC分类号： F02M37/20

CPC分类号： F02M37/20 ,  F02M25/0836 ,  F16K17/19 ,  F16K24/00 ,  Y10T137/86324

摘要： A method, fuel system, and components for facilitating the delivery of liquid fuel from a fuel tank in fluid communication with a float bowl carburetor of an internal combustion engine, wherein evaporative emissions of the fuel from the fuel tank and float bowl carburetor are mitigated. During operation of the engine, fluid communication is permitted between the fuel tank and the carburetor, and fuel vapors at a predetermined threshold superatmospheric pressure are permitted to vent outwardly from the fuel tank. During inoperation of the engine, fluid communication is prevented between the fuel tank and the carburetor, and fuel vapors at a predetermined threshold superatmospheric pressure are permitted to vent outwardly from the fuel tank.

摘要翻译： 一种方法，燃料系统和用于便于从燃料箱输送液体燃料的部件，该燃料箱与内燃机的浮罐化油器流体连通，其中减轻了来自燃料箱和浮球式化油器的燃料的蒸发排放。 在发动机操作期间，允许在燃料箱和化油器之间进行流体连通，并且允许在预定阈值超大气压下的燃料蒸汽从燃料箱向外排放。 在发动机的工作期间，在燃料箱和化油器之间防止流体连通，并且允许在预定阈值超大气压下的燃料蒸汽从燃料箱向外排气。

公开(公告)号：US20080178850A1

公开(公告)日：2008-07-31

申请号：US12016325

申请日：2008-01-18

申请人： Andrew E. Bejcek ,  John C. Woody

发明人： Andrew E. Bejcek ,  John C. Woody

IPC分类号： F02M37/00 ,  F02M1/00 ,  F02N17/00 ,  F02D17/04

CPC分类号： F02D41/042 ,  F02D35/0053 ,  F02D41/062 ,  F02M37/0052 ,  F02M37/0088

摘要： A fuel system for a carburetor that supports operation of an engine includes a body with a bore, a fuel source communicated with the bore and from which fuel is supplied to the bore for delivery to the engine, a drain unit and a control. The drain unit is communicated with the fuel source to selectively receive fuel from the fuel source and has a fuel chamber and an actuator operable to vary the volume of the fuel chamber. The control is communicated with the actuator to permit fuel flow from the fuel source to the fuel chamber when the engine is shut down and to cause fuel to flow from the fuel chamber to the fuel source prior to starting the engine.

摘要翻译： 用于支撑发动机操作的化油器的燃料系统包括具有孔的主体，与所述孔连通的燃料源，并且从所述燃料供应燃料以供输送到发动机，排出单元和控制装置。 排放单元与燃料源连通以选择性地从燃料源接收燃料，并且具有可操作以改变燃料室的容积的燃料室和致动器。 控制与致动器连通，以允许当发动机关闭时燃料从燃料源流向燃料室，并且在启动发动机之前使燃料从燃料室流向燃料源。

公开(公告)号：US07263981B2

公开(公告)日：2007-09-04

申请号：US11135242

申请日：2005-05-23

申请人： John C. Woody

发明人： John C. Woody

IPC分类号： F02M5/10 ,  F02M5/12

CPC分类号： F02M5/14 ,  F02M7/12 ,  F02M17/04 ,  F02M25/0836 ,  F02M25/089 ,  F02M37/0023

摘要： Methods and fuel systems to reduce evaporative emissions of a volatile fuel. A fuel tank contains fuel, a carburetor mixes air with the fuel from the fuel tank, and a plurality of fluid paths route fuel amongst and/or between the fuel tank and the carburetor. A valve actuation device stops flow of fuel in one or more of the plurality of fluid paths and the carburetor is adapted to be drained of fuel during engine shutdown to reduce or prevent evaporative emissions from the fuel system. The carburetor is preferably designed so as to minimize a volume of fuel contained therein.

摘要翻译： 减少挥发性燃料蒸发排放的方法和燃料系统。 燃料箱包含燃料，化油器将空气与来自燃料箱的燃料混合，并且多个流体路径在燃料箱和化油器之间和/或之间路由燃料。 阀致动装置阻止多个流体路径中的一个或多个中的燃料流动，并且化油器适于在发动机关闭期间排出燃料以减少或防止来自燃料系统的蒸发排放。 化油器优选设计成使其中所含的燃料的体积最小化。

公开(公告)号：US5133905A

公开(公告)日：1992-07-28

申请号：US594021

申请日：1990-10-09

申请人： John C. Woody ,  Mark S. Swanson

发明人： John C. Woody ,  Mark S. Swanson

IPC分类号： F02M7/11 ,  F02M17/04

CPC分类号： F02M17/04 ,  F02M7/11 ,  Y10S261/67 ,  Y10S261/68

摘要： Method, system and apparatus for metering fuel to an internal combustion engine via a carburetor having a mixture conduit with a venturi therein. A main fuel nozzle supplies fuel to the venturi of the carburetor in response to the static pressure drop induced across an associated main fuel flow controlling restriction by the engine intake induced air flow through the carburetor mixture conduit. A pitot tube is disposed in the venturi with an opening facing upstream in a zone of maximum air flow through the carburetor venturi. A vent passageway system connects the pitot tube to a single closed air chamber cooperable with either a diaphragm or a float to regulate operation of an inlet valve controlling flow of fuel to a main fuel controlling restriction. The adverse effect of engine intake induced tuning pressure wave forms in the mixture conduit of the carburetor transitting the venturi is eliminated, reduced or modulated by the dynamic pressure exerted by said tuning waves at the pitot tube and transmitted by the vent passageway to said chamber and to said main fuel restriction.

摘要翻译： 通过具有其中具有文丘里管的混合管道的化油器将燃料计量到内燃机的方法，系统和装置。 主燃料喷嘴响应于由发动机进气引起的通过化油器混合管道的气流引起的相关联的主燃料流控制限制引起的静压力下降，向化油器的文氏管提供燃料。 皮托管设置在文丘里管中，在通过化油器文丘里管的最大气流区域中面向上游的开口。 排气通道系统将皮托管连接到与隔膜或浮子配合的单个封闭空气室，以调节控制燃料流向主燃料控制限制的入口阀的操作。 通过在皮托管施加的所述调谐波施加的动态压力来消除，减少或调节在经过文丘里管的化油器的混合管道中的发动机进气引起的调谐压力波形的不利影响，并且通过排气通道传送到所述室， 说燃油主要限制。

公开(公告)号：US4759883A

公开(公告)日：1988-07-26

申请号：US24987

申请日：1987-03-12

申请人： John C. Woody ,  Mark S. Swanson

发明人： John C. Woody ,  Mark S. Swanson

IPC分类号： F02M17/40 ,  F02M1/10 ,  F02M7/18 ,  F02M7/20 ,  F02M17/04 ,  G05D7/01 ,  F02M3/10

CPC分类号： G05D7/0186 ,  F02M1/10 ,  F02M17/04 ,  F02M7/18 ,  Y10S261/38 ,  Y10S261/68 ,  Y10S261/84

摘要： A temperature compensated carburetor having a fuel metering system including a variable restriction needle gate valve for varying the effective flow cross-sectional area of the main and/or idle fuel supply duct to modulate the flow rate of fuel to the carburetor venturi mixing passage. The needle gate valve is made of plastic material having a much greater coefficient of expansion than the aluminum carburetor body in which it is adjustably mounted such that differential linear expansion and contraction of the needle valve relative to the carburetor body in response to ambient temperature changes varies the flow-controlling cross-sectional area of the fuel duct inversely relative to ambient temperature changes. The needle valve is a rod-like body with a threaded cylindrical mounting portion at one end threadably secured in a threaded bore in the carburetor body. A reduced diameter extension of the needle body extends axially away from the mounting end of the needle body and has cylindrical stem portion slidable in another bore of the carburetor body. The needle body is unrestrained linearly from the free end of the stem portion to the needle body mounting portion. The free end of the stem is movable in a jet fuel feeding passageway of the fuel duct to thus vary the flow controlling cross-section thereof.

公开(公告)号：US07568472B2

公开(公告)日：2009-08-04

申请号：US12173148

申请日：2008-07-15

申请人： John C. Woody

发明人： John C. Woody

IPC分类号： F02M5/10 ,  F02M5/12

CPC分类号： F02M5/14 ,  F02M7/12 ,  F02M17/04 ,  F02M25/0836 ,  F02M25/089 ,  F02M37/0023

摘要： Methods and fuel systems to reduce evaporative emissions of a volatile fuel. A fuel tank contains fuel, a carburetor mixes air with the fuel from the fuel tank, and a plurality of fluid paths route fuel amongst and/or between the fuel tank and the carburetor. A valve actuation device stops flow of fuel in one or more of the plurality of fluid paths and the carburetor is adapted to be drained of fuel during engine shutdown to reduce or prevent evaporative emissions from the fuel system. The carburetor is preferably designed so as to minimize a volume of fuel contained therein.

摘要翻译： 减少挥发性燃料蒸发排放的方法和燃料系统。 燃料箱包含燃料，化油器将空气与来自燃料箱的燃料混合，并且多个流体路径在燃料箱和化油器之间和/或之间路由燃料。 阀致动装置阻止多个流体路径中的一个或多个中的燃料流动，并且化油器适于在发动机关闭期间排出燃料以减少或防止来自燃料系统的蒸发排放。 化油器优选设计成使其中所含的燃料的体积最小化。

公开(公告)号：US06640770B2

公开(公告)日：2003-11-04

申请号：US09970932

申请日：2001-10-04

申请人： John C. Woody

发明人： John C. Woody

IPC分类号： F02B7700

CPC分类号： F02M1/00 ,  F02M25/089

摘要： A fuel evaporative emission control apparatus in a carburetor which prevents diurnal evaporation to the atmosphere of fuel from a remote fuel tank through a fuel bowl or fuel chamber of a float-type carburetor. One or more shut-off valves in the carburetor are yieldably biased to a shut-off position. Only upon engine operation or user intervention will the fuel shut-off valve move to an open or on position. In this way, reliance upon the engine user is not required to reduce evaporative emissions.

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：US07775189B2

公开(公告)日：2010-08-17

申请号：US12016325

申请日：2008-01-18

申请人： Andrew E. Bejcek ,  John C. Woody

发明人： Andrew E. Bejcek ,  John C. Woody

IPC分类号： F02D41/06

CPC分类号： F02D41/042 ,  F02D35/0053 ,  F02D41/062 ,  F02M37/0052 ,  F02M37/0088

摘要： A fuel system for a carburetor that supports operation of an engine includes a body with a bore, a fuel source communicated with the bore and from which fuel is supplied to the bore for delivery to the engine, a drain unit and a control. The drain unit is communicated with the fuel source to selectively receive fuel from the fuel source and has a fuel chamber and an actuator operable to vary the volume of the fuel chamber. The control is communicated with the actuator to permit fuel flow from the fuel source to the fuel chamber when the engine is shut down and to cause fuel to flow from the fuel chamber to the fuel source prior to starting the engine.

摘要翻译： 用于支撑发动机操作的化油器的燃料系统包括具有孔的主体，与所述孔连通的燃料源，并且从所述燃料供应燃料以供输送到发动机，排出单元和控制装置。 排放单元与燃料源连通以选择性地从燃料源接收燃料，并且具有可操作以改变燃料室的容积的燃料室和致动器。 控制与致动器连通，以允许当发动机关闭时燃料从燃料源流向燃料室，并且在启动发动机之前使燃料从燃料室流向燃料源。

公开(公告)号：US20080276911A1

公开(公告)日：2008-11-13

申请号：US12173148

申请日：2008-07-15

申请人： John C. Woody

发明人： John C. Woody

IPC分类号： F02M5/10 ,  F02M37/04

CPC分类号： F02M5/14 ,  F02M7/12 ,  F02M17/04 ,  F02M25/0836 ,  F02M25/089 ,  F02M37/0023

摘要： Methods and fuel systems to reduce evaporative emissions of a volatile fuel. A fuel tank contains fuel, a carburetor mixes air with the fuel from the fuel tank, and a plurality of fluid paths route fuel amongst and/or between the fuel tank and the carburetor. A valve actuation device stops flow of fuel in one or more of the plurality of fluid paths and the carburetor is adapted to be drained of fuel during engine shutdown to reduce or prevent evaporative emissions from the fuel system. The carburetor is preferably designed so as to minimize a volume of fuel contained therein.

摘要翻译： 减少挥发性燃料蒸发排放的方法和燃料系统。 燃料箱包含燃料，化油器将空气与来自燃料箱的燃料混合，并且多个流体路径在燃料箱和化油器之间和/或之间路由燃料。 阀致动装置阻止多个流体路径中的一个或多个中的燃料流动，并且化油器适于在发动机关闭期间排出燃料以减少或防止来自燃料系统的蒸发排放。 化油器优选设计成使其中所含的燃料的体积最小化。