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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：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：US4465642A
公开(公告)日：1984-08-14
申请号：US468875
申请日：1983-02-23
CPC分类号： F02M7/17 , Y10S261/56
摘要： A variable venturi-type carburetor comprising a suction piston which has a tip face having an upstream end portion. A raised wall is formed on the inner wall of the intake passage. The upstream end portion of the suction piston cooperates with the tip edge of the raised wall to restrict the flow of air flowing within the intake passage. The upstream end portion of the suction piston has a V-shaped central portion and flat opposed end portions. The tip edge of the raised wall has a flat central portion cooperating with the V-shaped central portion of the suction piston and has opposed end portions cooperating with the flat opposed end portions of the suction piston and projecting towards the intake passage.
摘要翻译： 一种可变的文丘里型化油器，包括具有顶端面的吸入活塞，该顶端具有上游端部分。 在进气通道的内壁上形成有一个凸起的壁。 吸入活塞的上游端部与升高的壁的顶端边缘配合，以限制在进气通道内流动的空气流。 吸入活塞的上游端部具有V形中央部和平坦的相对端部。 凸起的顶端边缘具有与吸入活塞的V形中心部分配合的平坦的中心部分，并且具有与吸入活塞的平坦相对的端部配合并朝着进气通道突出的相对的端部。
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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：US4473511A
公开(公告)日：1984-09-25
申请号：US506998
申请日：1983-06-23
申请人： Takaaki Itoh , Takashi Katou , Toshiharu Morino
发明人： Takaaki Itoh , Takashi Katou , Toshiharu Morino
摘要： A variable venturi-type carburetor comprising a hollow cylindrical casing and a suction piston which is movable in the casing. The casing has a support pipe extending along the axis of the suction piston. The suction piston has a piston rod which is inserted into the support pipe. A bearing sleeve, equipped with a plurality of balls, is inserted between the piston rod and the support pipe. The bearing sleeve has a plurality of connecting grooves formed on the outer circumferential wall of the sleeve and extending in the axial direction of the sleeve over the entire length thereof.
摘要翻译： 一种可变的文丘里型化油器，包括中空圆柱形壳体和可在壳体中移动的抽吸活塞。 壳体具有沿抽吸活塞的轴线延伸的支撑管。 吸入活塞具有插入到支撑管中的活塞杆。 装备有多个球的轴承套被插入在活塞杆和支撑管之间。 轴承套筒具有形成在套筒的外周壁上的多个连接槽，并且在套筒的整个长度上沿轴向延伸。
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8.发明授权
公开(公告)号：US4443388A
公开(公告)日：1984-04-17
申请号：US417868
申请日：1982-09-14
申请人： Mitsuyoshi Teramura , Masatami Takimoto , Norihiko Nakamura , Takaaki Itoh , Takashi Katou , Toshiharu Morino , Youzou Sakakibara
发明人： Mitsuyoshi Teramura , Masatami Takimoto , Norihiko Nakamura , Takaaki Itoh , Takashi Katou , Toshiharu Morino , Youzou Sakakibara
摘要： A device for adjusting the degree of opening of the throttle valve of a carburetor comprising a cam pivotally mounted on a pivot. The cam is actuated by a wax valve and rotated in accordance with an increase in the temperature of the cooling water of the engine. The cam has a cam face which is engageable with a lever connected to the throttle valve for retaining the throttle valve at a predetermined fast idling degree during engine warm-up. An auxiliary lever is pivotally mounted on the pivot. The auxiliary lever has an outer circumferential face which is engageable with the lever of the throttle valve for retaining the throttle valve at the predetermined fast idling degree after completion of engine warm-up.
摘要翻译： 一种用于调节化油器的节流阀的开度的装置，其包括枢转地安装在枢轴上的凸轮。 凸轮由蜡阀致动并根据发动机的冷却水的温度升高而旋转。 凸轮具有可与连接到节流阀的杆接合的凸轮面，用于在发动机预热期间将节流阀保持在预定的快速空转度。 辅助杆枢转地安装在枢轴上。 辅助杆具有可与节流阀的杆接合的外周面，用于在完成发动机预热之后将节气门保持在预定的快速空转状态。
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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：US4491550A
公开(公告)日：1985-01-01
申请号：US618326
申请日：1984-06-08
CPC分类号： F02M7/17
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 flat upstream end portion. A raised wall is formed on the inner wall of an intake passage, which faces the tip face of the suction piston. The raised wall has a tip edge having an approximately V-shaped cross-section. The flat upstream end portion of the tip face of the suction piston cooperates with the tip edge of the raised wall for defining an approximately isosceles triangular-shaped air inlet control opening therebetween when the amount of air fed into the cylinder of an 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。 尖端面具有平坦的上游端部。 在与吸入活塞的前端面相对的进气通路的内壁上形成有升高的壁。 凸起壁具有大致V形横截面的尖端边缘。 吸入活塞的顶面的平坦的上游端部与凸起的顶端边缘配合，以在进给到发动机的气缸中的空气量小时在其间形成大致等腰三角形的空气入口控制开口。
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