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公开(公告)号：US4493804A
公开(公告)日：1985-01-15
申请号：US617844
申请日：1984-06-07
申请人： Norihiko Nakamura , Takaaki Itoh , Takashi Katou , Yozo Ota , Toshiharu Morino
发明人： Norihiko Nakamura , Takaaki Itoh , Takashi Katou , Yozo Ota , Toshiharu Morino
CPC分类号： F02M7/17
摘要： A variable venturi-type carburetor comprising a suction piston which has a tip face. A raised wall is formed on the inner wall of the intake passage, which faces the tip face of the suction piston. The raised wall has a substantially straight extending tip edge. The inner wall of the intake passage and the tip edge of the raised wall define a D-shaped air inlet mouth. The connecting portions of the inner wall of the intake passage and the tip edge of the raised wall have an arc shape. The upstream end portion of the tip face of the suction piston and the tip edge of the raised wall define an isosceles triangular air inlet opening therebetween when the amount of air fed into the cylinder of the engine is small.
摘要翻译： 一种可变文丘里型化油器，包括具有尖端面的抽吸活塞。 在进气通道的内壁上形成有一个与吸气活塞的顶面相对的凸壁。 凸起的壁具有基本上直的延伸的尖端边缘。 进气通道的内壁和凸起的顶部边缘限定了D形进气口。 进气通道的内壁和凸起的顶端的连接部分具有弧形。 当进入发动机气缸的空气量小时，吸入活塞的前端面的上游端部和凸起的顶端边缘在其间限定了等腰三角形空气入口。
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公开(公告)号：US4472326A
公开(公告)日：1984-09-18
申请号：US397697
申请日：1982-07-13
申请人： Norihiko Nakamura , Takaaki Itoh , Takashi Katou , Yozo Ota , Toshiharu Morino
发明人： Norihiko Nakamura , Takaaki Itoh , Takashi Katou , Yozo Ota , Toshiharu Morino
CPC分类号： F02M7/28 , F02M7/17 , Y10S261/20
摘要： A variable venturi-type carburetor comprising a fuel passage which is open to an intake passage. An air bleed passage is connected to the fuel passage. The carburetor comprises an air bleed control valve device for controlling the flow area of the air bleed passage. The air bleed control valve device comprises a bore formed therein, a push rod slidably inserted into the bore for controlling the flow area of the air bleed passage, and a wax valve actuating the push rod. A cooling water passage is formed in the air bleed control valve device so as to surround the air bleed passage and the wax valve.
摘要翻译： 一种可变文丘里型化油器，包括对进气通道开放的燃料通道。 排气通道连接到燃料通道。 化油器包括用于控制排气通道的流动面积的排气控制阀装置。 排气控制阀装置包括形成在其中的孔，可滑动地插入孔中的用于控制排气通道的流动面积的推杆和致动推杆的蜡阀。 在排气控制阀装置中形成冷却水通道，以便围绕排气通道和蜡阀。
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公开(公告)号：US4464311A
公开(公告)日：1984-08-07
申请号：US426831
申请日：1982-09-29
申请人： Norihiko Nakamura , Takaaki Itoh , Takashi Katou , Yozo Ota , Toshiharu Morino
发明人： Norihiko Nakamura , Takaaki Itoh , Takashi Katou , Yozo Ota , Toshiharu Morino
CPC分类号： F02M7/17 , Y10S261/56
摘要： A variable venturi-type carburetor comprising a suction piston which has a tip face defining a venturi portion. The tip face has a needle-mounting face at the center thereof, and a metering needle is fixed onto the needle-mounting face. The tip face also has a projecting tip face portion located upstream of the needle and projecting from the needle-mounting face towards the venturi portion. A groove, extending along the axis of the intake passage of the carburetor, is formed on the projecting tip face portion. The projecting tip face portion has a V-shaped cross-section which expands from the groove towards the venturi portion.
摘要翻译： 一种可变的文丘里型化油器，包括具有限定文氏管部分的顶端面的抽吸活塞。 尖端面在其中心具有针安装面，并且计量针固定在针安装面上。 尖端面还具有位于针的上游的突出的尖端面部分，并且从针安装面向文氏管部分突出。 沿着化油器的进气通道的轴线延伸的凹槽形成在突出的末端面部分上。 突出的顶面部分具有从凹槽朝向文氏管部分扩展的V形横截面。
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公开(公告)号：US4459243A
公开(公告)日：1984-07-10
申请号：US407115
申请日：1982-08-11
申请人： Norihiko Nakamura , Takaaki Itoh , Takashi Katou , Yozo Ota , Toshiharu Morino
发明人： Norihiko Nakamura , Takaaki Itoh , Takashi Katou , Yozo Ota , Toshiharu Morino
CPC分类号： F02M7/17 , Y10S261/56
摘要： A variable venturi-type carburetor comprising a suction piston which has a tip face defining a venturi portion. The tip face has a projecting tip face portion located upstream of the needle and projecting toward the venturi portion. A groove, extending along the axis of the intake passage of the carburetor, is formed on the projecting tip face portion. The projecting tip face portion has a V-shaped cross-section which expands from the groove toward the venturi portion. A projection, having a V-shaped cross-section, is formed on the inner wall of the intake passage, which faces the tip face of the intake passage, which faces the tip face of the suction piston. The projection enters into the V-shaped cross-section of the projecting tip face portion of the suction piston when the amount of air fed into the cylinder of the engine is small.
摘要翻译： 一种可变的文丘里型化油器，包括具有限定文氏管部分的顶端面的抽吸活塞。 尖端面具有位于针的上游的突出的尖端面部分并朝向文氏管部分突出。 沿着化油器的进气通道的轴线延伸的凹槽形成在突出的末端面部分上。 突出的顶面部分具有从凹槽朝文丘里部分扩展的V形横截面。 具有V形横截面的突起形成在进气通道的内壁上，该内壁面对与吸入活塞的前端面相对的进气通道的前端面。 当进入发动机气缸的空气量小时，突起进入吸入活塞的突出端面部分的V形横截面。
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公开(公告)号：US4477392A
公开(公告)日：1984-10-16
申请号：US408796
申请日：1982-08-17
申请人： Norihiko Nakamura , Takaaki Itoh , Takashi Katou , Yozo Ota , Toshiharu Morino
发明人： Norihiko Nakamura , Takaaki Itoh , Takashi Katou , Yozo Ota , Toshiharu Morino
CPC分类号： F02M7/17
摘要： A variable venturi-type carburetor comprising a vacuum chamber and an atmospheric pressure chamber which are separated by a suction piston. A needle is mounted on the central portion of the tip face of the suction piston. A suction hole, interconnecting the vacuum chamber to a venturi portion of the carburetor, is formed on the tip face of the suction piston at a position located upstream of the needle. The vacuum chamber is open to the atmosphere via a flow rate control valve apparatus when the engine temperature is low. The vacuum chamber is disconnected from the atmosphere by the flow rate control valve apparatus when the engine temperature is high.
摘要翻译： 一种可变的文丘里型化油器，包括由抽吸活塞分离的真空室和大气压力室。 针安装在吸入活塞的尖端面的中心部分。 将抽真空室与化油器的文氏管部分相互连接的抽吸孔形成在位于针的上游位置的抽吸活塞的顶面上。 当发动机温度低时，真空室通过流量控制阀装置对大气开放。 当发动机温度高时，真空室由流量控制阀装置与大气隔离。
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公开(公告)号：US4450117A
公开(公告)日：1984-05-22
申请号：US417907
申请日：1982-09-14
申请人： Norihiko Nakamura , Takaaki Ito , Takashi Katou , Yozo Ota , Toshiharu Morino
发明人： Norihiko Nakamura , Takaaki Ito , Takashi Katou , Yozo Ota , Toshiharu Morino
摘要： A variable venturi-type carburetor comprising a suction piston, a fuel passage, and a needle fixed onto the suction piston and extending through the fuel passage. An air bleed passage is connected to the fuel passage. During engine starting, before the engine begins to rotate by its own power, the vacuum chamber of the suction piston is open to the atmosphere and the air bleed passage is shut off. When the engine begins to rotate by its own power, the vacuum chamber of the suction piston is closed from the atmosphere. After this, the air bleed passage is gradually opened. Such control of the closing of the vacuum chamber and the opening of the air bleed passage prevents engine stall by preventing the fuel mixture from becoming excessively lean when the engine first begins to rotate on its own power and then prevents engine misfires by subsequently reducing the air-fuel ratio to a lean mixture.
摘要翻译： 一种可变的文丘里型化油器，包括抽吸活塞，燃料通道和固定到吸入活塞上并延伸穿过燃料通道的针头。 排气通道连接到燃料通道。 在发动机起动期间，在发动机通过其自身动力开始旋转之前，吸入活塞的真空室对大气开放，并且排气通道被切断。 当发动机通过其自身的动力开始旋转时，吸入活塞的真空室从大气中关闭。 之后，排气通道逐渐打开。 当发动机首先以其自身的功率开始转动然后通过随后减少空气来防止发动机失火时，对真空室的关闭和排气通道的打开的这种控制防止发动机停止，防止燃料混合物变得过度倾斜 - 与稀混合物的燃料比。
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公开(公告)号：US4454076A
公开(公告)日：1984-06-12
申请号：US454577
申请日：1982-12-30
申请人： Satomi Wada , Masanori Senda , Takashi Horii , Yozo Ota
发明人： Satomi Wada , Masanori Senda , Takashi Horii , Yozo Ota
CPC分类号： F02M7/17 , Y10S261/56
摘要： Disclosed herein is a variable venturi carburetor including at least one pressure controlling port provided at the lower peripheral portion of the suction piston and adapted to face to a mixing chamber defined directly downstream of the venturi portion. The pressure controlling port is located at such a position as to communicate with the suction chamber and an atmospheric pressure chamber during middle and high intake air flowing stages as the suction piston reciprocates transversely with respect to the venturi portion, and to communicate with the suction chamber and the mixing chamber during low intake air flowing stage.
摘要翻译： 本文公开了一种可变文丘里化油器，其包括设置在吸入活塞的下周边部分处的至少一个压力控制口，并且适于面向直接在文氏管部分下游限定的混合室。 压力控制口位于这样一个位置，当吸入活塞相对于文丘里管部分横向往复运动时，位于中空和高吸入气流阶段期间与抽吸室和大气压力室连通的位置，并与吸入室 以及在低进气流动阶段的混合室。
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