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公开(公告)号：US07475871B2
公开(公告)日：2009-01-13
申请号：US11435537
申请日：2006-05-17
申请人： Hitoshi Terakado , Keita Tezuka
发明人： Hitoshi Terakado , Keita Tezuka
IPC分类号： F02M9/08
摘要： A rotary throttle valve carburetor has a start assist device with an operating member that interacts with a throttle lever of the throttle valve to axially displace the throttle valve, preferably without rotating it. The operating member may be rotated and moved linearly for selective engagement with the throttle lever by any one of a plurality of starting features generally spaced circumferentially about the operating member. Preferably, each starting feature has a face that faces axially outward with respect to the rotary axis and when in contact with the throttle lever. Each face is spaced at a different distance from the operating member axis thus selection of each will cause the operating member to contact and move the throttle lever a different distance. The different distances correspond to varying fuel enrichments that may be associated with different temperatures of an engine to be started.
摘要翻译： 旋转节流阀化油器具有启动辅助装置，其具有与节流阀的节流杆相互作用的操作构件，以便使节流阀轴向移动，优选地不使其旋转。 操作构件可以通过围绕操作构件大致间隔开的多个起始特征中的任何一个而被线性移动和选择性地与节流杆接合。 优选地，每个启动特征具有相对于旋转轴线轴向向外并且当与节流杆接触时的面。 每个面部与操作构件轴线间隔开不同的距离，因此每个面的选择将导致操作构件接触并将节流杆移动到不同的距离。 不同的距离对应于可能与要启动的发动机的不同温度相关联的变化的燃料浓缩。
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公开(公告)号：US20060273471A1
公开(公告)日：2006-12-07
申请号：US11435537
申请日：2006-05-17
申请人： Hitoshi Terakado , Keita Tezuka
发明人： Hitoshi Terakado , Keita Tezuka
摘要： A rotary throttle valve carburetor has a start assist device with an operating member that interacts with a throttle lever of the throttle valve to axially displace the throttle valve, preferably without rotating it. The operating member may be rotated and moved linearly for selective engagement with the throttle lever by any one of a plurality of starting features generally spaced circumferentially about the operating member. Preferably, each starting feature has a face that faces axially outward with respect to the rotary axis and when in contact with the throttle lever. Each face is spaced at a different distance from the operating member axis thus selection of each will cause the operating member to contact and move the throttle lever a different distance. The different distances correspond to varying fuel enrichments that may be associated with different temperatures of an engine to be started.
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公开(公告)号：US06382598B1
公开(公告)日：2002-05-07
申请号：US09696487
申请日：2000-10-25
申请人： Hitoshi Terakado
发明人： Hitoshi Terakado
IPC分类号： F02M1704
CPC分类号： F02M19/04 , F02M5/125 , F02M17/04 , Y10S261/68 , Y10T137/7831
摘要： An improved fuel flow control device of a diaphragm-type carburetor having a lever which can be easily coupled to a flow control valve body. The lever has a resilient portion which flexes to permit a cooperating portion of the valve body to pass thereby and into an opening in the lever. After the valve body is received in the opening, the resilient portion returns at least in part to its unflexed position to retain the valve body and prevent its separation from the lever.
摘要翻译： 一种具有杠杆的隔膜式化油器的改进的燃料流量控制装置，其可以容易地联接到流量控制阀体。 杠杆具有弹性部分，该弹性部分弯曲以允许阀体的配合部分通过并进入杠杆中的开口。 在阀体容纳在开口中之后，弹性部分至少部分地返回到其非弯曲位置，以保持阀体并防止其与杠杆分离。
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公开(公告)号：US08348244B2
公开(公告)日：2013-01-08
申请号：US12843008
申请日：2010-07-24
IPC分类号： F02M19/04
CPC分类号： F02M7/12 , F02M7/18 , Y10T137/7062
摘要： A carburetor valve and limiter cap assembly for limiting adjustment of fuel flow in a carburetor may include a needle valve and a limiter cap. The needle valve may have a tip, a threaded portion, a head having a flange with an outer diameter greater than the rest of the head, and one or more serrations formed on the head. The limiter cap may have a sidewall, a tab extending outwardly from the sidewall, a first cavity having an inner diameter sized for an interference fit with the flange, and at least one driving feature to engage at least one serration so that rotation of the limiter cap causes rotation of the needle valve. The interference fit between the flange and the limiter cap inhibits removal of the limiter cap from the needle valve to prevent undesired adjustment of the needle valves by an end user.
摘要翻译： 用于限制化油器中燃料流量调节的化油器阀和限制器盖组件可包括针阀和限位盖。 针阀可以具有尖端，螺纹部分，具有外径大于头部的其余部分的凸缘的头部，以及形成在头部上的一个或多个锯齿。 所述限制器帽可具有侧壁，从所述侧壁向外延伸的突出部，具有尺寸适于与所述凸缘过盈配合的内径的第一腔，以及至少一个驱动特征，以使所述限制器 帽引起针阀旋转。 法兰和限位器帽之间的过盈配合禁止从针阀上移除限制器帽，以防止最终用户对针阀的不期望的调整。
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公开(公告)号：US06378846B1
公开(公告)日：2002-04-30
申请号：US09591876
申请日：2000-06-12
IPC分类号： F02M908
CPC分类号： F02M19/12 , F02D9/10 , F02D11/02 , F02D2009/0261 , F02M9/08
摘要： A throttle valve lever for controlling the rate of fuel flow in a rotary throttle valve type carburetor is proposed, wherein the throttle valve lever has increased stiffness to help prevent structural deformation due to excessive force exerted and applied to the lever over time. The throttle valve lever basically includes an oblong structure comprising synthetic resin and an oblong reinforcement plate comprising metal. The resin structure has a hole defined therethrough, which is capable of fitting around the shaft of a throttle valve of a carburetor, and also has a lever portion at one end of the resin structure. The metal plate has a hole defined therethrough, which is capable of fitting around the shaft of a throttle valve of a carburetor, and also has a lever portion at one end of the metal plate. The metal plate is embedded within the resin structure such that the lever portion of the resin structure and the lever portion of the metal plate are correspondingly situated, the hole of the resin structure and the hole of the metal plate are aligned, and the metal plate is exposed at the metal plate hole and is capable of direct and fitted contact with the throttle valve shaft.
摘要翻译： 提出了一种用于控制旋转节流阀式化油器中的燃料流量的节流阀杆，其中节流阀杆具有增加的刚度，以帮助防止由于施加过大的力而随着时间的推移而施加到杠杆上的结构变形。 节流阀杆基本上包括长方形结构，其包括合成树脂和包括金属的长方形加强板。 树脂结构体具有贯穿其中的孔，该孔能够安装在化油器的节流阀的轴周围，并且在树脂结构的一端也具有杆部。 金属板具有限定在其中的孔，其能够围绕化油器的节流阀的轴安装，并且还在金属板的一端具有杆部。 金属板被嵌入在树脂结构内，使得树脂结构的杠杆部分和金属板的杠杆部分相应地定位，树脂结构的孔和金属板的孔对齐，并且金属板 在金属板孔处露出，并且能够直接和与节流阀轴接合。
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公开(公告)号：US06347788B1
公开(公告)日：2002-02-19
申请号：US09543195
申请日：2000-04-05
申请人： Hitoshi Terakado
发明人： Hitoshi Terakado
IPC分类号： F02M702
CPC分类号： F02M7/103 , F02M19/03 , Y10S261/39
摘要： A fuel jet supporting structure for a carburetor includes a support column (5) provided with a fuel passage which introduces fuel to an air intake passage (9). The fuel passage includes a fuel passage bore (24), an air passage bore (19), a threaded bore (18) and an outlet passage (16) which has subsequently reduced diameters. A stepped portion between the threaded bore (18) and outlet passage (16) is tapered. The fuel jet body (25) has a middle portion forming an emulsion tube (26) and a downstream threaded portion (28) which engages the threaded bore (18). A downstream end (27) is tapered and abuts the tapered section in the bore to form a seal.
摘要翻译： 一种用于化油器的燃料喷射支撑结构，包括一个支撑柱（5），该支柱设置有将燃料引入进气通道（9）的燃料通道。 燃料通道包括燃料通道孔（24），空气通道孔（19），螺纹孔（18）和出口通道（16），其随后减小直径。 螺纹孔（18）和出口通道（16）之间的阶梯部分是锥形的。 燃料喷射体（25）具有形成乳液管（26）的中间部分和与螺纹孔（18）接合的下游螺纹部分（28）。 下游端（27）是锥形的并与孔中的锥形部分邻接以形成密封。
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公开(公告)号：US20120018908A1
公开(公告)日：2012-01-26
申请号：US12843008
申请日：2010-07-24
CPC分类号： F02M7/12 , F02M7/18 , Y10T137/7062
摘要： A carburetor valve and limiter cap assembly for limiting adjustment of fuel flow in a carburetor may include a needle valve and a limiter cap. The needle valve may have a tip, a threaded portion, a head having a flange with an outer diameter greater than the rest of the head, and one or more serrations formed on the head. The limiter cap may have a sidewall, a tab extending outwardly from the sidewall, a first cavity having an inner diameter sized for an interference fit with the flange, and at least one driving feature to engage at least one serration so that rotation of the limiter cap causes rotation of the needle valve. The interference fit between the flange and the limiter cap inhibits removal of the limiter cap from the needle valve to prevent undesired adjustment of the needle valves by an end user.
摘要翻译： 用于限制化油器中燃料流量调节的化油器阀和限制器盖组件可包括针阀和限位盖。 针阀可以具有尖端，螺纹部分，具有外径大于头部的其余部分的凸缘的头部，以及形成在头部上的一个或多个锯齿。 所述限制器帽可具有侧壁，从所述侧壁向外延伸的突出部，具有尺寸适于与所述凸缘过盈配合的内径的第一腔，以及至少一个驱动特征，以使所述限制器 帽引起针阀旋转。 法兰和限位器帽之间的过盈配合禁止从针阀上移除限制器帽，以防止最终用户对针阀的不期望的调整。
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公开(公告)号：US06827337B2
公开(公告)日：2004-12-07
申请号：US09817531
申请日：2001-03-26
申请人： Hitoshi Terakado
发明人： Hitoshi Terakado
IPC分类号： F02M908
CPC分类号： F02M9/00
摘要： A rotary throttle valve carburetor has a fuel-and-air mixing passage which extends through a carburetor body. A cylindrical throttle chamber extends down from a top surface of the body and communicates transversely with the fuel-and-air mixing passage. A rotary throttle seats rotatably and vertically or axially movable within the chamber and through the fuel-and-air mixing passage. The rotary throttle has a bore fully communicating and longitudinally aligned with the fuel-and-air mixing passage at wide-open throttle. The rotary throttle has a throttle shaft projecting upward through the top surface of the carburetor body and through a hole of a base portion of a plastic lid plate engaged between the top surface and a metallic bracket. An upward projecting annular shoulder of the lid plate is disposed concentrically to and spaced radially apart from the throttle shaft. A circular seal is disposed radially between the annular shoulder of the lid plate and the throttle shaft to prevent dirt from entering the valve chamber. A metallic cam follower engages the bracket and contacts a cam surface of a throttle lever engaged transversely to the upper end of the throttle shaft. The metallic cam follower or bracket is interconnected to the metallic carburetor body by a plurality of metallic spacers.
摘要翻译： 旋转节流阀化油器具有延伸穿过化油器主体的燃料和空气混合通道。 圆柱形节流室从主体的顶表面向下延伸并且与燃料和空气混合通道横向连通。 旋转节流阀可在腔室内并且通过燃料和空气混合通道可旋转和垂直或轴向移动。 旋转节流阀具有完全连通并且在大开口节流阀处与燃料和空气混合通道纵向对准的孔。 旋转节流阀具有通过化油器主体的上表面向上突出的节流轴，并且通过接合在顶表面和金属支架之间的塑料盖板的基部的孔。 盖板的向上突出的环形肩部与节流轴同心地设置并径向间隔开。 径向地设置在盖板的环形肩部和节流轴之间的圆形密封件，以防止灰尘进入阀室。 金属凸轮从动件与支架接合并接触横向于节流轴上端的节流杆的凸轮表面。 金属凸轮从动件或支架通过多个金属间隔件与金属化油器主体相互连接。
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公开(公告)号：US06672570B2
公开(公告)日：2004-01-06
申请号：US10054073
申请日：2001-11-13
申请人： Jun Takano , Hitoshi Terakado , Giovanni Vimercati
发明人： Jun Takano , Hitoshi Terakado , Giovanni Vimercati
IPC分类号： F02M110
CPC分类号： F02M3/09 , F02M1/10 , F02M7/22 , F02M9/06 , F02M17/04 , Y10S261/08 , Y10S261/74
摘要： A variable venturi carburetor for a combustion engine has an uprighted cup-shaped piston head which forms an integral part of a venturi within a fuel-and-air mixing passage carried by a carburetor body, and a needle that projects rigidly downward from the head into a fuel feed passage. The position of the piston head controls air flow by adjusting the air flow cross-section of the variable venturi, and the needle simultaneously controls fuel flow into the fuel-and-air mixing passage at the venturi via obstruction of the fuel feed passage. The piston head and needle move in unison by a flexible diaphragm engaged to and disposed above the head. An atmospheric chamber is defined below the diaphragm and a vacuum chamber is defined generally above the diaphragm. A vacuum passage extends through the bottom of the head communicating between the fuel-and-air mixing passage at the venturi and the vacuum chamber. As vacuum at the venturi increases, the volume of the vacuum chamber decreases and the flexing diaphragm moves the head partially out of the fuel-and-air mixing passage until a balance of forces between the vacuum draw and the resilient compression of a spring disposed within the vacuum chamber and which biases the head into the passage is reached. During cold engine starts, cold idling, and cold acceleration, a cold engine priming device sensing the temperature of the engine and delivers additional fuel into the fuel-and-air mixing passage from a fuel chamber when the engine is below a pre-set value.
摘要翻译： 用于内燃机的可变文丘里化油器具有直立的杯形活塞头，其形成由化油器主体承载的燃料和空气混合通道内的文丘里管的一体部分，以及从头部刚性向下突出的针 燃料供给通道。 活塞头的位置通过调节可变文氏管的空气流横截面来控制空气流，并且针同时控制通过燃料供给通道阻塞在文丘里管处进入燃料和空气混合通道的燃料流。 活塞头和针通过与头部接合并设置在头部上方的柔性隔膜同时移动。 大气室位于隔膜下方，真空室通常位于隔膜的上方。 真空通道延伸穿过在文丘里管和燃油室之间的燃料和空气混合通道之间连通的头部的底部。 当文丘里管处的真空增加时，真空室的体积减小，并且弯曲隔膜将头部部分部分地移出燃料和空气混合通道，直到真空拉伸与设置在内部的弹簧的弹性压缩之间的平衡 达到真空室并将头部偏压到通道中。 在冷发动机启动，冷空转和冷加速期间，冷发动机起动装置感测发动机的温度，并且当发动机低于预定值时，将燃料和空气混合通道从燃料室输送到燃料和空气混合通道中 。
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