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1.发明授权Start-fuel supply device in internal combustion engine for portable equipment 失效用于便携式设备的内燃机中的启动燃料供应装置
公开(公告)号：US4893593A
公开(公告)日：1990-01-16
申请号：US273891
申请日：1988-11-21
CPC分类号： F02M17/04 , F02M1/16 , Y10S261/08
摘要： A start-fuel supply device in an internal combustion engine for a portable equipment comprising a start-fuel primer pump rotatively coupled to a starter motor of the engine, a fuel metering device for receiving a charge of fuel from a metering chamber of a carburetor during the reverse rotation of the start-fuel primer pump, and a fuel nozzle for injecting fuel from the fuel metering device to an air intake passage of the carburetor during the normal rotation of the fuel-start primer pump. A passage portion between the fuel metering device and the start-fuel primer pump is connected to a fuel reservoir through a by-pass passage provided with a check valve which allows a flow from the fuel metering device to the fuel reservoir.
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公开(公告)号：US4796578A
公开(公告)日：1989-01-10
申请号：US102383
申请日：1987-09-29
CPC分类号： F02D17/04
摘要： An anti-overrunning system for an internal combustion engine having a throttle valve in a carburetor in which an actuator for the throttle valve is responsive to pump pressure to move the valve to a closing position. A vibrating pump responsive to engine vibration is located to direct output control pressure to the actuator. A control valve between the pump and the actuator normally blocks pressure to the actuator but is responsive to air pressure from an engine cooling fan such that, upon overrun conditions, the fan pressure will actuate the control valve to connect the pump to the actuator to cause the throttle valve to move toward a closing position.
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3.发明授权
公开(公告)号：US4862847A
公开(公告)日：1989-09-05
申请号：US238286
申请日：1988-08-29
CPC分类号： F02M1/16 , F02M17/04 , Y10S261/08
摘要： An apparatus for supplying a start-fuel to an internal combustion engine for a portable type machine such as a chain saw or brush cutter which has an electric battery for use in starting. An electrically driven primer pump is connected to the metering chamber of a diaphragm carburetor and can direct fuel from the chamber to an accumulator which is connected to a fuel tank through a relief valve and also to a fuel jet in the venturi entrance of the carburetor. When the primer pump is actuated by a key switch, as the engine is started, fuel in the metering chamber is moved to the accumulator and fuel is replenished from the fuel tank. Also, an electromagnetic valve opens the accumulator to the fuel jet to furnish start-fuel to the venturi.
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公开(公告)号：US4796583A
公开(公告)日：1989-01-10
申请号：US102354
申请日：1987-09-29
CPC分类号： F02D17/04
摘要： An anti-overrunning device for an internal combustion engine utilizing a carburetor with a throttle valve and a vibrating pump for generating pressure by vibrations of the engine. An actuator is provided for the throttle valve to move it to a closing position, and a control valve is used to control flow of pressure from the vibrating pump to the actuator. A generator driven by the engine provides electromotive force to actuate the control valve.
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公开(公告)号：US4862848A
公开(公告)日：1989-09-05
申请号：US237964
申请日：1988-08-29
CPC分类号： F02M1/16 , F02M17/04 , Y10S261/08
摘要： An apparatus for supplying a start-fuel to an internal combustion engine for a portable type machine such as a chain saw or brush cutter which has an electric battery for use in starting. An electrically driven reversible pump is used to draw fuel from a diaphragm carburetor metering chamber into a fuel reservoir and also to draw fuel from a fuel tank into the metering chamber. Under cold-start conditions, the pump is reversed and fuel from the reservoir is directed to a jet at the entrance of the carburetor venturi passage to provide a rich mixture to assist in starting.
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公开(公告)号：US4752420A
公开(公告)日：1988-06-21
申请号：US36442
申请日：1987-04-09
申请人： Kohji Nagasaka , Yoshimi Sejimo , Teruhiko Tobinai
发明人： Kohji Nagasaka , Yoshimi Sejimo , Teruhiko Tobinai
IPC分类号： F02M17/04
CPC分类号： F02M17/04 , Y10S261/68 , Y10S261/81
摘要： A diaphragm carburetor for small internal combustion engines of generally standard construction but improved features for facilitating hot starting due to engine heat or environmental heat which transmits to the carburetor. An automatic or manual relief passage from the diaphragm chamber relieves pressure on fuel due to heat conductors so that a rich fuel charge will not be forced into the engine but will release to atmosphere, thus permitting a normal fuel mixture to be directed to the fuel mixing passage upon a restart of the engine.
摘要翻译： 一种用于小型内燃机的隔膜式化油器，其通常具有标准结构，但改进了特征，便于由于发动机热量或传递至化油器的环境热而引起热启动。 来自隔膜室的自动或手动释放通道释放由于热导体引起的燃料压力，使得不会将富燃料充入强制进入发动机，而是释放到大气中，从而允许正常的燃料混合物被引导到燃料混合 通过重新启动发动机。
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公开(公告)号：US4769185A
公开(公告)日：1988-09-06
申请号：US84894
申请日：1987-08-13
申请人： Kohji Nagasaka , Yoshimi Sejimo
发明人： Kohji Nagasaka , Yoshimi Sejimo
CPC分类号： F02M17/04 , F02M5/10 , Y10S261/68 , Y10S261/81
摘要： A diaphragm carburetor with a fuel metering chamber designed for easy restart when hot which includes a separate escape chamber connected to the metering chamber having a second diaphragm controlled exhaust valve. The second diaphragm is subject to positive crankcase pressure during engine operation to maintain the exhaust valve closed. When the engine is stopped, the exhaust valve is opened by a spring and fuel in the metering chamber will move into the escape chamber and out of the carburetor rather than be forced into the fuel mixing passage and venturi of the carburetor.
摘要翻译： 具有燃料计量室的隔膜式化油器，其设计用于在热时易于重新启动，其包括连接到具有第二隔膜控制排气阀的计量室的单独的逸出室。 在发动机运转期间，第二个隔膜承受曲轴箱的正压力，以保持排气阀的关闭。 当发动机停止时，排气门由弹簧打开，计量室中的燃料将移动到逃逸室中并离开化油器，而不是被迫进入化油器的燃料混合通道和文丘里管。
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公开(公告)号：US4809658A
公开(公告)日：1989-03-07
申请号：US102113
申请日：1987-09-29
摘要： An anti-overrunning carburetion system which includes a carburetor with a throttle valve for opening and closing the venturi passage and a pressure responsive actuator having a pressure chamber for actuating the throttle valve to a closing position against a spring bias. A vibration responsive pneumatic pump, having also a pressure chamber, is connected to direct pressure directly to the pressure chamber of the actuator. A vibration sensor in the form of a spring backed ball is mounted to be subject to vibrations of an engine and is in communication with the pressure chamber of the pump and to atmosphere. In response to overrun conditions of the engine, the sensor will connect the pump pressure chamber to atmosphere and allow pressure to develop in the pressure chamber to be directed to the actuator, thus causing the actuator to reduce the throttle opening.
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公开(公告)号：US4796582A
公开(公告)日：1989-01-10
申请号：US102133
申请日：1987-09-29
CPC分类号： F02D17/04
摘要： An anti-overrunning device for an internal combustion engine which includes a carburetor with a controlled throttle valve. An actuator for the throttle valve includes a spring-biased rod mounted on a diaphragm. The rod normally urges the throttle valve to a closing position. The actuator includes a pressure actuated diaphgram responsive to pressure from a vibrating pump. This pressure tends to open the throttle valve. A vibration sensor is positioned to relieve pressure on the diaphgram of the actuator and, in response to overrunning of the engine, causes the throttle valve to close in under the influence of the spring bias.
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公开(公告)号：US4770822A
公开(公告)日：1988-09-13
申请号：US84858
申请日：1987-08-13
申请人： Yoshimi Sejimo
发明人： Yoshimi Sejimo
CPC分类号： F02M17/04 , F02M5/10 , Y10S261/68 , Y10S261/81
摘要： A diaphragm carburetor with a fuel metering chamber designed for easy restart when hot which includes a separate escape chamber connected to the metering chamber having a second diaphragm controlled exhaust valve. The second diaphragm is subject to positive crankcase pressure during engine operation to maintain the exhaust valve closed. When the engine is stopped, the exhaust valve is opened by a spring and fuel in the metering chamber will move into the escape chamber and out of the carburetor rather than be forced into the fuel mixing passage and venturi of the carburetor. A porous absorbent material is positioned to receive the fuel leaving the open exhaust valve and to retain it until it vaporizes and dissipates through openings in the retainer atmosphere. The exhaust valve may be manually operated as an option.
摘要翻译： 具有燃料计量室的隔膜式化油器，其设计用于在热时易于重新启动，其包括连接到具有第二隔膜控制排气阀的计量室的单独的逸出室。 在发动机运转期间，第二个隔膜承受曲轴箱的正压力，以保持排气阀的关闭。 当发动机停止时，排气门由弹簧打开，计量室中的燃料将移动到逃逸室中并离开化油器，而不是被迫进入化油器的燃料混合通道和文丘里管。 定位多孔吸收材料以接收离开打开的排气阀的燃料并保持其直到其通过保持器气氛中的开口蒸发并消散。 排气阀可以手动操作。
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