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公开(公告)号：US08333366B2
公开(公告)日：2012-12-18
申请号：US12719103
申请日：2010-03-08
申请人： Brett W. Jury , David D. Roth
发明人： Brett W. Jury , David D. Roth
摘要： A carburetor includes a body, a throttle valve positioned in an air/fuel passageway in the body, a fuel bowl coupled to the body, a fuel bowl chamber at least partially defined by the fuel bowl, and a one-piece fuel-metering insert coupled to the body. The insert includes an idle circuit passageway having a first end in fluid communication with a fuel passageway in the body and a second end in fluid communication with the fuel bowl chamber. The insert also includes a main circuit passageway having a first end in fluid communication with the air/fuel passageway and a second end in fluid communication with the fuel bowl chamber.
摘要翻译： 化油器包括主体，定位在主体中的空气/燃料通道中的节流阀，联接到主体的燃料碗，至少部分地由燃料碗限定的燃料碗室，以及一体式燃料计量插入件 耦合到身体。 插入件包括空转电路通道，其具有与主体中的燃料通道流体连通的第一端和与燃料碗室流体连通的第二端。 插入件还包括主电路通道，其具有与空气/燃料通道流体连通的第一端和与燃料碗室流体连通的第二端。
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公开(公告)号：US20090146327A1
公开(公告)日：2009-06-11
申请号：US12242853
申请日：2008-09-30
申请人： David D. Roth
发明人： David D. Roth
IPC分类号： F02M1/02
CPC分类号： F02M1/02 , F02D11/04 , F02D2009/0205 , F02D2009/0244 , F02M1/10
摘要： A carburetor configured for use with an internal combustion engine includes a body defining a passageway therein, a throttle lever including a cam surface, and a throttle valve positioned in the passageway and responsive to movement of the throttle lever. The throttle valve is configured to rotate about a first axis from a wide-open first position to a second position at least 50 degrees from the first position. The carburetor also includes a choke lever including a follower surface configured to be engaged by the cam surface and a choke valve positioned in the passageway and responsive to movement of the choke lever. One of the cam surface and the follower surface includes an arcuate segment having a constant radius centered on a second axis. The arcuate segment is sufficiently long such that the throttle valve is configured to move at least 15 degrees while the other of the cam surface and the follower surface engages the arcuate segment.
摘要翻译： 构造成与内燃机一起使用的化油器包括限定其中的通道的主体，包括凸轮表面的节流杆和定位在通道中并响应于节流杆的运动的节流阀。 节流阀构造成围绕第一轴线从宽开的第一位置旋转到距离第一位置至少50度的第二位置。 化油器还包括阻风门杆，该阻风杆包括构造成与凸轮表面接合的从动表面和位于通道中并响应于阻力杆的运动的阻塞阀。 凸轮表面和从动表面中的一个包括具有以第二轴为中心的恒定半径的弓形段。 弓形段足够长，使得节流阀被配置为移动至少15度，同时凸轮表面和从动表面中的另一个接合弓形段。
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公开(公告)号：US20110215486A1
公开(公告)日：2011-09-08
申请号：US12719103
申请日：2010-03-08
申请人： Brett W. Jury , David D. Roth
发明人： Brett W. Jury , David D. Roth
IPC分类号： F02M19/02
摘要： A carburetor includes a body, a throttle valve positioned in an air/fuel passageway in the body, a fuel bowl coupled to the body, a fuel bowl chamber at least partially defined by the fuel bowl, and a one-piece fuel-metering insert coupled to the body. The insert includes an idle circuit passageway having a first end in fluid communication with a fuel passageway in the body and a second end in fluid communication with the fuel bowl chamber. The insert also includes a main circuit passageway having a first end in fluid communication with the air/fuel passageway and a second end in fluid communication with the fuel bowl chamber.
摘要翻译： 化油器包括主体，定位在主体中的空气/燃料通道中的节流阀，联接到主体的燃料碗，至少部分地由燃料碗限定的燃料碗室，以及一体式燃料计量插入件 耦合到身体。 插入件包括空转电路通道，其具有与主体中的燃料通道流体连通的第一端和与燃料碗室流体连通的第二端。 插入件还包括主电路通道，其具有与空气/燃料通道流体连通的第一端和与燃料碗室流体连通的第二端。
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公开(公告)号：US08240639B2
公开(公告)日：2012-08-14
申请号：US12242853
申请日：2008-09-30
申请人： David D. Roth
发明人： David D. Roth
IPC分类号： F02M1/08
CPC分类号： F02M1/02 , F02D11/04 , F02D2009/0205 , F02D2009/0244 , F02M1/10
摘要： A carburetor configured for use with an internal combustion engine includes a body defining a passageway therein, a throttle lever including a cam surface, and a throttle valve positioned in the passageway and responsive to movement of the throttle lever. The throttle valve is configured to rotate about a first axis from a wide-open first position to a second position at least 50 degrees from the first position. The carburetor also includes a choke lever including a follower surface configured to be engaged by the cam surface and a choke valve positioned in the passageway and responsive to movement of the choke lever. One of the cam surface and the follower surface includes an arcuate segment having a constant radius centered on a second axis. The arcuate segment is sufficiently long such that the throttle valve is configured to move at least 15 degrees while the other of the cam surface and the follower surface engages the arcuate segment.
摘要翻译： 构造成与内燃机一起使用的化油器包括限定其中的通道的主体，包括凸轮表面的节流杆和定位在通道中并响应于节流杆的运动的节流阀。 节流阀构造成围绕第一轴线从宽开的第一位置旋转到距离第一位置至少50度的第二位置。 化油器还包括阻风门杆，该阻风杆包括构造成与凸轮表面接合的从动表面和位于通道中并响应于阻力杆的运动的阻塞阀。 凸轮表面和从动表面中的一个包括具有以第二轴为中心的恒定半径的弓形段。 弓形段足够长，使得节流阀被配置为移动至少15度，同时凸轮表面和从动表面中的另一个接合弓形段。
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