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1. 发明授权

US4052968A Air-to-fuel ratio adjusting system for an internal combustion engine 失效
标题翻译：用于内燃机的空燃比调节系统
公开(公告)号：US4052968A
公开(公告)日：1977-10-11
申请号：US605175
申请日：1975-08-15
申请人： Tadashi Hattori , Shigetaka Takada , Fumio Sugi , Takamichi Nakase
发明人： Tadashi Hattori , Shigetaka Takada , Fumio Sugi , Takamichi Nakase
IPC分类号： F02D41/14 , F02D43/00 , F02M7/12 , F02M7/133 , F02M23/04 , F02D1/04 , F02B15/00 , F02D33/00 , F02D35/00
CPC分类号： F02D43/00 , F02D41/1441 , F02D41/1488 , F02M23/04 , F02M7/133 , Y02T10/146
摘要： A carburetor for applying air-fuel mixture to an internal combustion engine includes a main passage for applying air-fuel mixture and principally controlling the amount thereof.The air-to-fuel ratio of the air-fuel mixture to be supplied to the engine is detected by an air-to-fuel ratio detector mounted in an exhaust pipe of the engine, and when the detected ratio is lower than a stoichiometrically optimum air-to-fuel ratio for perfect combustion of the air-fuel mixture additional air is supplied to the main passage through a bypass passage, the amount of which is controlled by a bypass valve mounted in the bypass passage.An intake air pressure detecting device is mounted in an intake pipe of the engine, and when the detected pressure (absolute pressure) in the intake pipe becomes higher additional fuel is supplied to the main passage through an auxiliary fuel jet provided in the carburetor.
摘要翻译：用于向内燃机施加空气 - 燃料混合物的化油器包括用于施加空气 - 燃料混合物并主要控制其量的主通道。

2. 发明授权

US4369749A Variable venturi carburetor 失效
标题翻译：可变文丘里化油器
公开(公告)号：US4369749A
公开(公告)日：1983-01-25
申请号：US228898
申请日：1981-01-27
申请人： Fumio Sugi
发明人： Fumio Sugi
IPC分类号： F02M5/10 , F02M7/17 , F02M7/00
CPC分类号： F02M7/17 , F02M5/10 , Y10S261/81
摘要： Disclosed herein is an improvement in a variable venturi carburetor for an internal combustion engine which comprises a venturi portion, a float chamber, a main fuel passage communicating with the venturi portion and with the float chamber, a main fuel jet provided in the main fuel passage and a movable metering needle. A free end of the metering needle is adapted to control the size of the main fuel jet and the base portion of the metering needle is mounted to a suction piston adapted to transversely move with respect to the venturi portion in response to the condition of load on the internal combustion engine. The improvement includes provision of a bypass detouring upwardly from a portion of the main fuel passage upstream of the main fuel jet for discharging vapor of fuel, and the bypass communicates with a negative pressure passage which has an opening in the lower portion of the venturi portion and with an air passage which has an opening in the vicinity of an air horn inlet.
摘要翻译：本文公开了一种用于内燃机的可变文丘里化油器的改进，其包括文丘里部分，浮子室，与文丘里管部分和浮子室连通的主燃料通道，设置在主燃料通道和可动计量针。计量针的自由端适于控制主燃料喷射器的尺寸，并且计量针的基部安装到适于相对于文氏管部分横向移动的吸入活塞，以响应负载条件内燃机。该改进包括在主燃料喷嘴的上游的主燃料喷嘴的上游部分向上设置旁路迂回，以排出燃料的蒸气，并且旁路与在文氏管部分的下部具有开口的负压通道连通并具有在空气喇叭入口附近具有开口的空气通道。

3. 发明授权

US4072137A Air-to-fuel ratio adjusting system for an internal combustion engine 失效
标题翻译：用于内燃机的空燃比调节系统
公开(公告)号：US4072137A
公开(公告)日：1978-02-07
申请号：US679495
申请日：1976-04-22
申请人： Tadashi Hattori , Akira Takada , Takamichi Nakase , Fumio Sugi
发明人： Tadashi Hattori , Akira Takada , Takamichi Nakase , Fumio Sugi
IPC分类号： F02D35/00 , F02D41/14 , F02M7/00 , F02M7/12 , F02M23/04 , F02M33/00
CPC分类号： F02D41/1488 , F02D35/003 , F02M23/04 , Y02T10/146
摘要： In an air-to-fuel ratio adjusting system for an internal combustion engine which comprises an additional air supply passage communicating with the carburetor of an internal combustion engine at the position downstream of its throttle valve, a control valve disposed in the additional air supply passage to vary the passage area thereof, and a percolation sensor for detecting percolation phenomenon of the fuel during idling operation of the engine is provided. When the occurrence of a percolation phenomenon is determined in accordance with the output signal of the percolation sensor, the control valve is controlled in response to the output signal of an air-to-fuel ratio sensor, whereas the control valve is held in a predetermined valve position when there is no occurrence of percolation phenomenon during idling operation of the engine.
摘要翻译：在用于内燃机的空燃比调节系统中，包括在其节流阀下游位置与内燃机的化油器连通的附加空气供给通道，设置在附加空气供给通道中的控制阀以改变其通过面积，并且提供用于检测发动机怠速运转期间燃料的渗透现象的渗滤传感器。当根据渗滤传感器的输出信号确定渗透现象的发生时，响应于空 - 燃比传感器的输出信号来控制控制阀，而控制阀保持在预定的在发动机怠速运转时不发生渗流现象的阀门位置。

4. 发明授权

US4822532A Carburetor 失效
标题翻译：化油器
公开(公告)号：US4822532A
公开(公告)日：1989-04-18
申请号：US133379
申请日：1987-12-15
申请人： Koichi Suda , Fumio Sugi
发明人： Koichi Suda , Fumio Sugi
IPC分类号： F02M19/00 , F02D9/10 , F02M23/02
CPC分类号： F02D9/1055 , Y10S261/51 , Y10T137/5762
摘要： A carburetor having a suction passage including therein a large venturi section and a throttle valve and connected at the upstream end thereof to the discharge port of a supercharger and at the downstream end thereof to the intake manifold of an internal combustion engine. A recess is formed either in the outer circumference of the shaft of the throttle valve or in the inside wall of a through hole formed in the body of a carburetor for pivotally supporting the shaft of the throttle valve, whereby a pressure chamber is formed between the shaft of the throttle valve and the through hole. The pressure chamber communicates with part of the suction passage upstream of the venturi tubes by a first air passage, and a second air passage opening into the through hole at a position between the suction passage and the pressure chamber communicates with the suction passage at a position downstream of the throttle valve. Pressure chambers which surround the throttle shaft are located to receive an air-fuel mixture when the pressure downstream of the venturi becomes greater than that upstream of the venturi and to feed the retained mixture into the carburetor when the pressure downstream of the venturi is lower than that upstream of the venturi.
摘要翻译：一种化油器，其具有包括大文丘里部分和节流阀的吸入通道，并且在其上游端连接到增压器的排出口，并在其下游端连接到内燃机的进气歧管。在节流阀的轴的外周或形成在化油器的主体的通孔的内壁中形成凹部，用于枢转地支撑节流阀的轴，由此在所述节气门之间形成压力室节流阀的轴和通孔。压力室通过第一空气通道与文丘里管上游的吸入通道的一部分连通，并且在吸入通道和压力室之间的位置处通入通孔的第二空气通道与吸入通道在位置节流阀下游。当文丘里管下游的压力变得大于文丘里管的上游压力时，围绕节流轴的压力室被定位成接收空气 - 燃料混合物，并且当文氏管下游的压力低于文丘里管时，将保留的混合物进料到化油器中文丘里管的上游。

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