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    Fuel metering system for a carburetor
    3.
    发明授权
    Fuel metering system for a carburetor 有权
    化油器燃油计量系统

    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。

    Carburetor needle valve adjustment limiter cap and method of use
    4.
    发明授权
    Carburetor needle valve adjustment limiter cap and method of use 失效
    化油器针阀调节限制帽及使用方法

    公开(公告)号：US5322645A

    公开(公告)日：1994-06-21

    申请号：US106410

    申请日：1993-08-13

    申请人： Steven L. Hammett ,  George M. Pattullo ,  Donald C. Ross ,  David L. Speirs ,  James E. Van Allen ,  Mark S. Swanson

    发明人： Steven L. Hammett ,  George M. Pattullo ,  Donald C. Ross ,  David L. Speirs ,  James E. Van Allen ,  Mark S. Swanson

    IPC分类号： F02B1/04 ,  F02B63/02 ,  F02B75/02 ,  F02M3/10 ,  F02M19/04 ,  F16B37/14 ,  F16B41/00 ,  F02M3/08

    CPC分类号： F16B41/005 ,  F02B63/02 ,  F02M19/04 ,  F02M3/10 ,  F02B1/04 ,  F02B2075/025 ,  F02M2003/105 ,  F05C2201/021 ,  F16B37/14 ,  Y10S261/38 ,  Y10S261/84 ,  Y10T137/7062

    摘要： A cap and method for limiting the range of adjustment of a fuel flow metering valve in a carburetor. The cap has a body with an arm projecting generally radially outwardly therefrom to abut against a stop carried by the carburetor to limit valve rotation and a passage therein for telescopically axially receiving the head end of a shank of the valve. Portions within the passage enable the cap to be retained in the shank of the valve in a freely rotating first position during assembly and arm orientation, and in a second position securing the cap to the valve to limit adjustment and maintain emissions calibration. Preferably, the cap may also be moved to a third position to releasably drivingly engage the valve to perform fuel flow adjustment before securing the cap to the valve. The cap can also be prepositioned angularly relative to an adjusted position of the valve before it is moved to its second position on the valve to limit the extent of subsequent adjustment of the valve.

    摘要翻译： 用于限制化油器中燃料流量计量阀的调节范围的盖和方法。 盖具有主体，该臂具有从其大致径向向外突出的臂，以抵靠由化油器承载的止挡件以限制阀旋转，并且其中用于可伸缩地轴向地容纳阀杆的头端的通道。 通道内的部分使得盖能够在组装和臂定向期间以自由旋转的第一位置保持在阀的柄中，并且在将盖固定到阀以限制调节并维持排放校准的第二位置中。 优选地，盖子还可以移动到第三位置以可释放地驱动地接合阀门，以在将盖子固定到阀门之前执行燃料流量调节。 在阀门移动到阀门的第二位置之前，盖子也可以相对于阀的调节位置成角度地进行预定位，以限制阀的后续调整的程度。

    Throttle valve arrangement for a carburetor
    5.
    发明授权
    Throttle valve arrangement for a carburetor 失效
    油门阀节流阀装置

    公开(公告)号：US07213571B2

    公开(公告)日：2007-05-08

    申请号：US11302885

    申请日：2005-12-14

    申请人： Takeshi Sakaguchi ,  James E. Van Allen

    发明人： Takeshi Sakaguchi ,  James E. Van Allen

    IPC分类号： F02D9/08

    CPC分类号： F02D11/04 ,  F02M1/12 ,  F02M11/02 ,  F02M17/04 ,  F02M17/42 ,  F02M19/088

    摘要： A carburetor throttle valve actuation assembly for a combustion engine is readily adapted for use as a remote control actuator, a local control throttle actuator, or both together providing an optional choice for the end user. The carburetor has a throttle valve having a shaft journaled to a body for movement about a rotation axis. A slave lever connects rigidly to a distal end of the shaft projecting outward from the body. A connection spaced radially outward from the axis engages the slave lever to a radially projecting swivel member of a local, manually operated, throttle valve actuation assembly. The swivel member rotates in unison with the slave lever about the axis, is spaced axially outward from the shaft and is journaled to a bracket engaged rigidly to the body. Preferably, the connection has a hole in the slave lever. If the remote throttle control actuator is used, a Bowden wire engages to a pin projecting axially outward from the slave lever at the hole. If the local throttle control actuator is used either a cylindrical void carried by the swivel member mates to the pin, or a peg projecting outward from the swivel member and toward the body is inserted into the hole forming the connection that permits axial movement of the slave lever with respect to the swivel member.

    摘要翻译： 用于内燃机的化油器节气门致动组件容易适用于作为遥控执行器，本地控制节流阀致动器或两者一起为最终用户提供可选择的选择。 化油器具有节流阀，该节流阀具有轴向与主体相对的旋转轴线运动的轴。 从动杆刚性地连接到从主体向外突出的轴的远端。 从轴线径向向外间隔的连接部将从动杆接合到局部手动操作的节气门致动组件的径向突出的旋转构件上。 旋转构件与从动杆一起绕轴线旋转，与轴轴向向外间隔开并且轴颈支撑到刚性地接合身体的支架。 优选地，连接件在从动杆中具有孔。 如果使用遥控节气门控制执行器，则鲍登线接合到在该孔处从从动杆轴向向外突出的销。 如果使用本地节流控制致动器，则由旋转构件承载的圆柱形空隙与销配合，或者从旋转构件向外突出并朝向主体的栓钉插入形成连接的孔中，允许从动件轴向移动 杠杆相对于旋转构件。

    Carburetor throttle and choke control mechanism
    6.
    发明授权
    Carburetor throttle and choke control mechanism 失效
    化油器油门和扼流圈控制机构

    公开(公告)号：US6000683A

    公开(公告)日：1999-12-14

    申请号：US979581

    申请日：1997-11-26

    申请人： James E. Van Allen

    发明人： James E. Van Allen

    IPC分类号： F02M1/08 ,  F02D11/02 ,  F02M1/02

    CPC分类号： F02M1/02 ,  F02D11/02

    摘要： A control mechanism for a carburetor having a throttle valve and a choke valve each having at least a cold-starting position and a full-speed position. The throttle valve is spring biased toward its third, low idle position, and the choke valve is spring biased toward its full-speed open position. When the choke valve is moved from its open position toward its cold start closed position a fast idle lever associated with the choke valve engages, via releasable latch parts, another lever associated with the throttle valve. The interengaging latch parts of these levers hold both valves in their respective cold-starting positions in opposition to the biasing springs. These latch levers can be released by operator actuation of the throttle valve control, thereby causing the choke valve to be automatically returned to its open position by its biasing spring, or, alternatively, the choke valve can be moved independently to its full-speed position. One of these latch levers has a row of fine ratchet teeth, and the other has a pawl selectively engaging whichever ratchet tooth becomes aligned therewith when the latch levers are operator actuated to their respective cold start positions. Upon release of operator actuating force, this feature prevents most, if not all of the retrograde movement of the choke and throttle valves out of their design cold start positions, despite operating slack in the latch system due to manufacturing tolerance stack-up in the various parts of the control mechanism in their assembly and operation.

    摘要翻译： 一种具有节流阀和阻流阀的化油器的控制机构，其具有至少冷启动位置和全速位置。 节流阀被弹簧偏置到其第三，低怠速位置，并且阻风门被弹簧偏压到其全速打开位置。 当阻流阀从其打开位置移动到其冷启动关闭位置时，与扼流阀相关联的快速空转杆通过可释放的闩锁部件接合与节流阀相关联的另一个杆。 这些杠杆的相互接合的闩锁部分将两个阀保持在与偏置弹簧相对的各自的冷起始位置。 这些闩锁杆可以通过操作者致动节气门控制来释放，从而使得阻塞阀通过其偏压弹簧自动返回到其打开位置，或者可选地，阻气阀可以独立地移动到其全速位置 。 这些闩锁杆中的一个具有一排精细的棘轮齿，另一个具有棘爪，当棘爪被操作者致动到它们各自的冷起始位置时，棘爪选择性地啮合，无论哪个棘齿与其对准。 在释放操作者致动力时，尽管操作松弛在闩锁系统中，但是由于各种不同的制动公差叠加，该特征防止了扼流器和节流阀的大部分（如果不是全部）的逆行运动脱离其设计冷启动位置 控制机构的部件组装和运行。