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1. 发明申请

US20050040547A1 Carburetor air-fuel mixture adjustment assembly 审中-公开
公开(公告)号：US20050040547A1
公开(公告)日：2005-02-24
申请号：US10955869
申请日：2004-09-30
申请人： Paul Dow , Hiroki Ogasawara , Giovanni Vimercati
发明人： Paul Dow , Hiroki Ogasawara , Giovanni Vimercati
IPC分类号： F02M3/10 , F02M17/40 , F02M19/00 , F02M19/04 , F02M1/00
CPC分类号： F02M3/10 , F02M19/04
摘要： An apparatus for adjusting the air-fuel ratio of a fuel mixture to be supplied to an engine. The apparatus has a pair of needle valve bodies and a pair of receptacles formed in a main body of a carburetor for receiving the needle valve bodies. Each needle valve body has a needle and a head. The needles are axially movable relative to a respective needle orifice. The needles may be axially advanced and retracted by rotating the needle valve bodies within the receptacles to respectively decrease and increase the flow of the fuel mixture around the needles and through the orifices. To prevent tampering with the needle valve body setting, the head of the needle valve body has an unconventional shape requiring a specialized tool to rotatably adjust the needle valve body. To further prevent tampering, the head is recessed with the main body of the carburetor. A retainer is disposed in the main body of the carburetor and receives the needle valve bodies to facilitate maintaining alignment of the needle valve bodies relative to the receptacles. The retainer assures that a constant fuel calibration setting is maintained through the orifices by resisting displacement of the needles due to such factors as external forces applied to the head of the needle valve body or engine vibration.

2. 发明授权

US06672570B2 Variable venturi carburetor 失效
标题翻译：可变文丘里化油器
公开(公告)号：US06672570B2
公开(公告)日：2004-01-06
申请号：US10054073
申请日：2001-11-13
申请人： Jun Takano , Hitoshi Terakado , Giovanni Vimercati
发明人： Jun Takano , Hitoshi Terakado , Giovanni Vimercati
IPC分类号： F02M110
CPC分类号： F02M3/09 , F02M1/10 , F02M7/22 , F02M9/06 , F02M17/04 , Y10S261/08 , Y10S261/74
摘要： A variable venturi carburetor for a combustion engine has an uprighted cup-shaped piston head which forms an integral part of a venturi within a fuel-and-air mixing passage carried by a carburetor body, and a needle that projects rigidly downward from the head into a fuel feed passage. The position of the piston head controls air flow by adjusting the air flow cross-section of the variable venturi, and the needle simultaneously controls fuel flow into the fuel-and-air mixing passage at the venturi via obstruction of the fuel feed passage. The piston head and needle move in unison by a flexible diaphragm engaged to and disposed above the head. An atmospheric chamber is defined below the diaphragm and a vacuum chamber is defined generally above the diaphragm. A vacuum passage extends through the bottom of the head communicating between the fuel-and-air mixing passage at the venturi and the vacuum chamber. As vacuum at the venturi increases, the volume of the vacuum chamber decreases and the flexing diaphragm moves the head partially out of the fuel-and-air mixing passage until a balance of forces between the vacuum draw and the resilient compression of a spring disposed within the vacuum chamber and which biases the head into the passage is reached. During cold engine starts, cold idling, and cold acceleration, a cold engine priming device sensing the temperature of the engine and delivers additional fuel into the fuel-and-air mixing passage from a fuel chamber when the engine is below a pre-set value.
摘要翻译：用于内燃机的可变文丘里化油器具有直立的杯形活塞头，其形成由化油器主体承载的燃料和空气混合通道内的文丘里管的一体部分，以及从头部刚性向下突出的针燃料供给通道。活塞头的位置通过调节可变文氏管的空气流横截面来控制空气流，并且针同时控制通过燃料供给通道阻塞在文丘里管处进入燃料和空气混合通道的燃料流。活塞头和针通过与头部接合并设置在头部上方的柔性隔膜同时移动。大气室位于隔膜下方，真空室通常位于隔膜的上方。真空通道延伸穿过在文丘里管和燃油室之间的燃料和空气混合通道之间连通的头部的底部。当文丘里管处的真空增加时，真空室的体积减小，并且弯曲隔膜将头部部分部分地移出燃料和空气混合通道，直到真空拉伸与设置在内部的弹簧的弹性压缩之间的平衡达到真空室并将头部偏压到通道中。在冷发动机启动，冷空转和冷加速期间，冷发动机起动装置感测发动机的温度，并且当发动机低于预定值时，将燃料和空气混合通道从燃料室输送到燃料和空气混合通道中。

3. 发明申请

US20050236722A1 Carburetor air-fuel mixture adjustment assembly 有权
标题翻译：化油器空气燃料混合物调整组件
公开(公告)号：US20050236722A1
公开(公告)日：2005-10-27
申请号：US11171037
申请日：2005-06-30
申请人： Paul Dow , Hiroki Ogasawara , Tetsuya Takahashi , Toshimasa Takahashi , Giovanni Vimercati
发明人： Paul Dow , Hiroki Ogasawara , Tetsuya Takahashi , Toshimasa Takahashi , Giovanni Vimercati
IPC分类号： F02M3/10 , F02M17/40 , F02M19/00 , F02M19/04
CPC分类号： F02M3/10 , F02M19/04 , Y10S261/38 , Y10S261/84 , Y10T137/7062
摘要： An apparatus for adjusting the air-fuel ratio of a fuel mixture to be supplied to an engine. The apparatus has a pair of needle valve bodies and a pair of receptacles formed in a main body of a carburetor for receiving the needle valve bodies. Each needle valve body has a needle and a head. The needles are axially movable relative to a respective needle orifice. The needles may be axially advanced and retracted by rotating the needle valve bodies within the receptacles to respectively decrease and increase the flow of the fuel mixture around the needles and through the orifices. To prevent tampering with the needle valve body setting, the head of the needle valve body has an unconventional shape requiring a specialized tool to rotatably adjust the needle valve body. To further prevent tampering, the head is recessed with the main body of the carburetor. A retainer is disposed in the main body of the carburetor and receives the needle valve bodies to facilitate maintaining alignment of the needle valve bodies relative to the receptacles. The retainer assures that a constant fuel calibration setting is maintained through the orifices by resisting displacement of the needles due to such factors as external forces applied to the head of the needle valve body or engine vibration.
摘要翻译：一种调节供给发动机的燃料混合物的空燃比的装置。该设备具有一对针阀体和形成在化油器的主体中的一对接收器，用于接收针阀体。每个针阀体都有针头和头部。针可相对于相应的针孔轴向移动。针可以通过旋转插座内的针阀体来分别减少和增加燃料混合物在针和通过孔的流动而轴向前进和缩回。为了防止针阀体设置的篡改，针阀体的头部具有非常规的形状，需要专门的工具来可旋转地调节针阀体。为了进一步防止篡改，头部与化油器的主体凹陷。保持器设置在化油器的主体中并接收针阀体，以便于保持针阀体相对于容器的对准。保持器确保通过阻止针的位移由于诸如施加到针阀体的头部的外力或发动机振动的因素而保持恒定的燃料校准设置。

4. 发明授权

US07070173B2 Carburetor air-fuel mixture adjustment assembly 有权
标题翻译：化油器空气燃料混合物调整组件
公开(公告)号：US07070173B2
公开(公告)日：2006-07-04
申请号：US11171037
申请日：2005-06-30
申请人： Paul J. Dow , Hiroki Ogasawara , Tetsuya Takahashi , Toshimasa Takahashi , Giovanni Vimercati
发明人： Paul J. Dow , Hiroki Ogasawara , Tetsuya Takahashi , Toshimasa Takahashi , Giovanni Vimercati
IPC分类号： F02M3/08 , F02M9/08
CPC分类号： F02M3/10 , F02M19/04 , Y10S261/38 , Y10S261/84 , Y10T137/7062
摘要： An apparatus for adjusting the air-fuel ratio of a fuel mixture to be supplied to an engine. The apparatus has a pair of needle valve bodies and a pair of receptacles formed in a main body of a carburetor for receiving the needle valve bodies. Each needle valve body has a needle and a head. The needles are axially movable relative to a respective needle orifice. The needles may be axially advanced and retracted by rotating the needle valve bodies within the receptacles to respectively decrease and increase the flow of the fuel mixture around the needles and through the orifices. To prevent tampering with the needle valve body setting, the head of the needle valve body has an unconventional shape requiring a specialized tool to rotatably adjust the needle valve body. To further prevent tampering, the head is recessed with the main body of the carburetor. A retainer is disposed in the main body of the carburetor and receives the needle valve bodies to facilitate maintaining alignment of the needle valve bodies relative to the receptacles. The retainer assures that a constant fuel calibration setting is maintained through the orifices by resisting displacement of the needles due to such factors as external forces applied to the head of the needle valve body or engine vibration.
摘要翻译：一种调节供给发动机的燃料混合物的空燃比的装置。该设备具有一对针阀体和形成在化油器的主体中的一对接收器，用于接收针阀体。每个针阀体都有针头和头部。针可相对于相应的针孔轴向移动。针可以通过旋转插座内的针阀体来分别减少和增加燃料混合物在针和通过孔的流动而轴向前进和缩回。为了防止针阀体设置的篡改，针阀体的头部具有非常规的形状，需要专门的工具来可旋转地调节针阀体。为了进一步防止篡改，头部与化油器的主体凹陷。保持器设置在化油器的主体中并接收针阀体，以便于保持针阀体相对于容器的对准。保持器确保通过阻止针的位移由于诸如施加到针阀体的头部的外力或发动机振动的因素而保持恒定的燃料校准设置。

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