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公开(公告)号：US06467757B1
公开(公告)日：2002-10-22
申请号：US09669579
申请日：2000-09-26
申请人： Yoshiaki Douyama
发明人： Yoshiaki Douyama
IPC分类号： F02M308
CPC分类号： F02D11/04 , Y10S261/84 , Y10T137/7062
摘要： A limiter cap assembly of a carburetor for a two cycle engine restricts maximum and minimum fuel amounts. The limiter cap assembly has a first cap engaged telescopically to the end of a low speed needle valve and a second cap engaged telescopically to the end of a high speed needle valve. The first and second caps are identical, each having a first tab and a second tab. The first tab sets the maximum fuel amount by contacting the adjacent cap and the second tab sets the minimum fuel amount by also engaging the adjacent cap. The first and second tabs are axially spaced apart so as not to obstruct rotation of the adjacent cap via the adjacent tabs. A housing having a lid encompasses the first and second caps. The caps each have a plurality of projections which engage an inner edge of the lid, thereby, provisionally staging the caps to the carburetor while final needle valve adjustments are made.
摘要翻译： 用于两个循环发动机的化油器的限制器盖组件限制最大和最小燃料量。 限制帽组件具有可伸缩地接合到低速针阀的端部的第一帽和可伸缩地接合到高速针阀的端部的第二帽。 第一和第二盖是相同的，每个具有第一接头和第二接头。 第一突出部通过接触相邻的盖而设置最大燃料量，而第二突片通过也接合相邻的盖而设置最小燃料量。 第一和第二突出部轴向间隔开，以便不会阻碍相邻盖经由相邻翼片的旋转。 具有盖的壳体包围第一和第二盖。 盖子各自具有接合盖的内边缘的多个突起，从而在进行最终的针阀调节时临时将盖子分级到化油器。
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公开(公告)号：US06499726B2
公开(公告)日：2002-12-31
申请号：US09515521
申请日：2000-02-29
IPC分类号： F02M308
CPC分类号： F02M11/00 , F02D2009/0208 , F02D2009/023 , F02M3/12
摘要： An internal combustion engine including a cylinder, a crankshaft, a reciprocating piston disposed in the cylinder and operably coupled to said crankshaft, and a carburetor. The carburetor includes an airflow passage through which varying amounts of air flows; a variably positioned throttle valve located in the airflow passage, the amount of air flowing through the airflow passage being varied in response to the position of the throttle valve; a source of stored liquid fuel; a well containing liquid fuel and in independent fluid communication with the source of stored liquid fuel; a nozzle extending between the liquid fuel contained in the well and the airflow passage, the nozzle having an outlet located upstream of the throttle valve in the airflow passage, a variable amount of the liquid fuel contained in the well being conveyed through the nozzle to the airflow passage in response to the amount of air flowing through the airflow passage; and an idle circuit in independent fluid communication with both the source of stored liquid fuel and the well, the idle circuit containing liquid fuel and having at least one fuel outlet located in the airflow passage downstream of the throttle valve, a variable amount of the liquid fuel contained in the idle circuit being conveyed to the fuel outlet in response to the amount of air flowing through the airflow passage. The engine may also include a governor mechanism by which the throttle valve is positioned in response to the speed of the crankshaft.
摘要翻译： 一种内燃机，包括气缸，曲轴，设置在气缸中并可操作地连接到所述曲轴的往复活塞，以及化油器。 化油器包括一个气流通道，空气流量可通过其变化; 位于气流通道中的可变位置的节流阀，响应于节流阀的位置而改变流过气流通道的空气量; 储存液体燃料的来源; 含有液体燃料的井和与所储存的液体燃料源独立流体连通; 在容纳在井中的液体燃料和气流通道之间延伸的喷嘴，喷嘴具有位于气流通道中的节流阀上游的出口，容纳在井中的可变量的液体燃料通过喷嘴输送到 响应于流过气流通道的空气量的气流通道; 以及与存储的液体燃料源和井的独立流体连通的空闲电路，包含液体燃料的空闲电路并且具有位于节流阀下游的气流通道中的至少一个燃料出口，可变量的液体 响应于流过气流通道的空气量，包含在怠速回路中的燃料被输送到燃料出口。 发动机还可以包括调速器机构，通过该调速器机构，节流阀响应于曲轴的速度而定位。
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公开(公告)号：US06402124B1
公开(公告)日：2002-06-11
申请号：US09538123
申请日：2000-03-29
IPC分类号： F02M308
CPC分类号： F02M3/10 , F02M19/04 , F02M2003/105 , Y10S261/38 , Y10S261/84 , Y10T137/7062
摘要： A carburetor fuel mixture adjustment assembly including a threaded cylindrical needle valve receptacle formed in a carburetor main body and intersecting a fuel passage. A needle valve body is threaded into the needle valve receptacle and includes a needle that extends into an axially-aligned needle seat orifice portion of the fuel passage. The needle is axially movable within the needle seat orifice by rotation of the needle valve body to control how much of the orifice is open to fuel flow. A valve spring disposed between a head of the needle valve body and the carburetor main body biases the head away from the carburetor main body. A needle stabilizer engages and cooperates with the valve spring in laterally biasing the needle into one position relative to the needle seat orifice. The lateral bias assures constant fuel flow through the orifice by resisting needle movement.
摘要翻译： 一种化油器燃料混合物调节组件，包括形成在化油器主体中并与燃料通道相交的带螺纹的圆柱形针阀座。 针阀体被拧入针阀座中，并且包括延伸到燃料通道的轴向对准的针座孔部分中的针。 针可以通过针阀体的旋转在针座孔内轴向移动，以控制孔口对燃料流量的开放程度。 设置在针阀体的头部与化油器主体之间的阀弹簧使头离开化油器主体。 针稳定器与阀弹簧接合并与阀弹簧配合，以使针相对于针座孔横向偏置一个位置。 横向偏压确保通过阻止针运动通过孔的恒定的燃料流动。
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公开(公告)号：US06691988B1
公开(公告)日：2004-02-17
申请号：US10246256
申请日：2002-09-18
IPC分类号： F02M308
CPC分类号： F02M3/10 , F02M2003/105 , Y10S261/38 , Y10S261/84 , Y10T137/7065
摘要： A tamper resistant mixture adjustment screw arrangement for a carburetor. The arrangement includes a carburetor body having at least one air/fuel adjustment screw threaded therein. The adjustment screw has a threaded shank and a head portion. The head portion is defined by a smooth top surface and an undulant, uneven side surface capable of being engaged and mated by an adjusting tool having a complementary undulant, uneven side surface capable of being engaged and mated by an adjusting tool having a complementary undulant, uneven surface for initially adjusting the air/fuel mixture in the carburetor. A blocking curb extends from the carburetor body to a level which at least substantially corresponds to a projecting extent of each adjustment screw and being closely spaced to the screw head to prevent the screw from being turned by commonly available tools, but to permit the screw to be adjusted by the adjusting tool.
摘要翻译： 用于化油器的防篡改混合物调节螺丝装置。 该装置包括具有至少一个空气/燃料调节螺钉的化油器主体。 调节螺钉具有螺纹柄和头部。 头部由平滑的顶表面和凹凸不平的侧表面限定，该侧表面能够通过具有互补的凹凸不平的侧表面的调节工具接合和配合，该侧面能够通过具有互补的起伏的调节工具接合和配合， 不平坦的表面用于初始调节化油器中的空气/燃料混合物。 阻塞路缘从化油器主体延伸到至少基本上对应于每个调节螺钉的突出范围并与螺钉头紧密间隔的水平，以防止螺钉被通常可用的工具转动，但是允许螺钉 由调整工具进行调整。
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公开(公告)号：US06491288B2
公开(公告)日：2002-12-10
申请号：US09821381
申请日：2001-03-29
申请人： Noriyuu Nagata , Toshihiro Hayashi
发明人： Noriyuu Nagata , Toshihiro Hayashi
IPC分类号： F02M308
CPC分类号： F02M19/04 , F02M3/10 , Y10S261/38
摘要： A carburetor fuel mixture adjustment assembly has a threadable holder which suppresses rotation of a needle valve body disposed within an elongated receptacle defined within a carburetor body. The threadable holder is rigidly engaged within a threading chamber of the receptacle. During assembly, the needle valve body is extended through a bore of the holder as a threading portion of the valve body rotateable cuts an interior threading groove into the threadable holder. The threadable holder is held rigidly within the threading chamber by the carburetor body. A sealing holder is disposed within the receptacle axially inward of the threadable holder and is prevented from rotating within the receptacle by the threadable holder. A stem holder portion of the sealing holder assures a needle portion of the needle valve assembly remains concentrically disposed within an outlet orifice of a fuel chamber of the receptacle. A shank holder portion of the sealing holder engages radially between a shank chamber wall of the carburetor, which axially defines a shank chamber of the receptacle, and the shank portion of the needle valve body disposed concentrically to and axially inward of the threading portion. Engagement of the shank holder portion prevents air from entering through the receptacle and into the sub-atmospheric fuel chamber, thereby assuring stable fuel flow through a fuel passage intersected by the fuel chamber and stable engine operation.
摘要翻译： 化油器燃料混合物调节组件具有一个可螺纹的保持器，该保持器抑制设置在化油器本体内限定的细长插座内的针阀体的旋转。 可螺纹保持器刚性地接合在容器的穿线室内。 在组装期间，当阀体的螺纹部分可旋转时，针阀体延伸穿过保持器的孔，将内部穿线槽切入可螺纹保持器。 可通过化油器主体将螺纹保持器刚性地保持在穿线室内。 密封保持器设置在容器的轴向内部的螺纹保持器内，并且通过可螺纹保持器防止在容器内旋转。 密封保持器的杆保持器部分确保针阀组件的针部分保持同心地设置在容器的燃料室的出口孔内。 密封保持器的柄保持器部分径向地接合在化油器的柄室壁之间，其轴向地限定了容器的柄室，并且针阀体的柄部分与穿线部分同心地设置并轴向向内设置。 杆支架部分的接合防止空气通过容器进入次大气燃料室，从而确保通过与燃料室相交的燃料通道和稳定的发动机运行的稳定的燃料流动。
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公开(公告)号：US06302383B1
公开(公告)日：2001-10-16
申请号：US09567444
申请日：2000-05-08
申请人： Kimball Rustin Scarr
发明人： Kimball Rustin Scarr
IPC分类号： F02M308
CPC分类号： F02M19/04 , F02M3/10 , F02M2003/105 , F16B41/005 , Y10S261/38 , Y10S261/84 , Y10T137/7062
摘要： A cover is installed over an engine adjuster such as a carburetor adjustment screw. This cover is in the form of a cap having a flat top with a frangible brim portion. The cap is installed in a housing for the adjustment device, in a recess directly above the adjustment device. An inner rim is formed on the cap beneath the flat top with a recessed portion being formed between the top and the rim. The inner rim of the cap matingly engages a rim which may be formed in the top portion of the adjuster or in a housing surrounding the adjuster and snaps into place joined to either the adjuster or its housing. An anti-pry protective washer or shoulder is provided in the housing. This anti pry device is positioned in close proximity to the outer wall of the inner rim of the cap in a manner to prevent prying instruments from reaching under the inner rim in an attempt to remove the cap. When attempts are made to reach under the cap, the frangible brim portion is likely to break providing evidence of attempted tampering.
摘要翻译： 一个盖子安装在发动机调节器（如化油器调节螺钉）上。 该盖子是具有平坦顶部的具有易碎边缘部分的盖子的形式。 盖子安装在用于调节装置的壳体中，位于调节装置正上方的凹部中。 内边缘形成在平顶部下方的帽上，在顶部和边缘之间形成凹陷部分。 盖的内缘配合地接合可以形成在调节器的顶部中的边缘或围绕调节器的壳体，并且卡扣到与调节器或其壳体接合的位置。 外壳中设有防撬保护垫圈或肩部。 这种防撬装置被定位成紧邻盖的内缘的外壁，以防止撬装器械到达内缘下方，以试图移除盖。 当试图达到上限时，脆弱的边缘部分可能会破坏提供企图篡改的证据。
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公开(公告)号：US06814343B2
公开(公告)日：2004-11-09
申请号：US10315564
申请日：2002-12-10
IPC分类号： F02M308
摘要： A carburetor including a main body and a throttle valve received in a mixing passage through the main body. The throttle valve is movable to adjust the quantity of a fuel and air mixture supplied to an engine. A carrier member on the main body has a threaded bore in which a shank of an idle speed adjustment screw is received to adjust and control the idle position of the throttle valve. The idle speed adjustment screw is formed of a polymeric material such that the shank is deformed by engagement with the threaded bore to reliably retain the idle speed adjustment screw in its adjusted position in the threaded bore.
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公开(公告)号：US06796551B2
公开(公告)日：2004-09-28
申请号：US10687123
申请日：2003-10-16
IPC分类号： F02M308
CPC分类号： F02M3/10 , F02M2003/105 , Y10S261/38 , Y10S261/84 , Y10T137/7065
摘要： A tamper resistant mixture adjustment screw arrangement for a carburetor. The arrangement includes a carburetor body having at least one air/fuel adjustment screw threaded therein. The adjustment screw has a threaded shank and a head portion. The head portion is defined by a smooth top surface and an undulant, uneven side surface capable of being engaged and mated by an adjusting tool having a complementary undulant, uneven side surface capable of being engaged and mated by an adjusting tool having a complementary undulant, uneven surface for initially adjusting the air/fuel mixture in the carburetor. A blocking curb extends from the carburetor body to a level which at least substantially corresponds to a projecting extent of each adjustment screw and being closely spaced to the screw head to prevent the screw from being turned by commonly available tools, but to permit the screw to be adjusted by the adjusting tool.
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公开(公告)号：US06543752B2
公开(公告)日：2003-04-08
申请号：US09948346
申请日：2001-09-06
申请人： Reinhard Gerhardy
发明人： Reinhard Gerhardy
IPC分类号： F02M308
CPC分类号： F02M3/10 , F02M19/04 , Y10S261/38
摘要： A carburetor for an internal combustion engine is provided and includes at least one adjusting screw disposed in a housing for regulating the fuel/air mixture. The adjusting screw is screwed into a bore of the carburetor housing. The adjusting screw is embodied as a cheese head screw, whereby one end of the screw is provided with two slots that are cross-shaped relative to one another and extend over the diameter of the cheese head screw.
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公开(公告)号：US06540212B2
公开(公告)日：2003-04-01
申请号：US10060446
申请日：2002-02-01
IPC分类号： F02M308
CPC分类号： F02M3/10 , F02M19/04 , F02M2003/105 , Y10S261/38 , Y10S261/84 , Y10T137/7062
摘要： A fuel needle valve assembly of a carburetor has a retainer which yieldingly restrains the rotational fuel flow setting capability of the needle valve. The retainer engages a shank of the needle valve and a parallel shaft, both of which project from the carburetor body. The retainer exerts a force which laterally displaces the projecting shank with respect to the shaft. The retainer has sufficient strength to ensure the factory set rotational setting of the fuel needle valve does not alter when a limiter cap is press fitted to a distal head of the needle. Furthermore, wherein the shaft is also a shank of a second needle valve, the same retainer laterally displaces the projecting shanks of both needle valves.
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