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1. 发明公开

EP1380747A2 Carburetor air-fuel mixture adjustment assembly 审中-公开
标题翻译： Brennstoff-Luft-Mischjustiervorrichtungfüreinen Vergaser
公开(公告)号：EP1380747A2
公开(公告)日：2004-01-14
申请号：EP03012085.1
申请日：2003-05-28
申请人： Walbro Engine Management, L.L.C.
发明人： Vimercati, Giovanni
IPC分类号： F02M3/10 , F02M19/04
CPC分类号： F02M19/04 , F02M3/10
摘要： An apparatus (10) for adjusting the air-fuel ratio of a fuel mixture to be supplied to an engine. The apparatus (10) has a needle valve body (18) and a receptacle (12) formed in a main body of a carburetor which receives the needle valve body. The needle valve body (18) has a needle and a head (28). The needle is axially movable relative to a needle orifice (34). The needle may be axially advanced and retracted by rotating the needle valve body (18) within the receptacle (12) to respectively decrease and increase the flow of the fuel mixture around the needle and through the orifice (34). To prevent tampering with the needle valve body setting, the head (28) of the needle valve body has an unconventional shape requiring a specialized tool to rotatably adjust the needle valve body (18). To further prevent tampering, the head is recessed with the main body of the carburetor. A generally annular retainer (46) is disposed concentrically on the needle valve body and laterally biases the needle valve body into engagement with the receptacle to maintain alignment of the needle valve body (18) relative to the receptacle (12). The retainer (46) assures that a constant fuel calibration setting is maintained through the orifice (34) by resisting needle displacement due to such factors as external forces applied to the head (28) of the needle valve body (18) or engine vibration.
摘要翻译：一种用于调节供应给发动机的燃料混合物的空燃比的装置（10）。装置（10）具有形成在容纳针阀体的化油器的主体中的针阀体（18）和容器（12）。针阀体（18）具有针头和头部（28）。针可相对于针孔（34）轴向移动。针头可以通过使针阀体（18）在容器（12）内旋转来轴向推进和缩回，以分别减少和增加燃料混合物在针头周围的流动并且通过孔口（34）。为了防止针阀阀体的窜改，针阀体的头部（28）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（18）。为了进一步防止篡改，头部与化油器的主体凹陷。大致环形的保持器（46）同心地设置在针阀体上，并且横向偏压针阀体与插座接合，以保持针阀体（18）相对于插座（12）的对准。保持器（46）确保通过孔口（34）通过抵抗由于施加到针阀体（18）的头部（28）的外力或发动机振动等因素而抵抗针头位移而保持恒定的燃料校准设定。

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