公开(公告)号：EP1026389A3

公开(公告)日：2000-12-13

申请号：EP00101810.0

申请日：2000-01-28

申请人： Walbro Japan, Inc.

发明人： Endo, Masatoshi ,  Nagata, Noriyuu

IPC分类号： F02M7/06

CPC分类号： F02M7/08 ,  F02M7/06

摘要： A carburetor for an internal combustion engine with an accelerator fuel pump in the carburetor having a piston actuated by a cam on a throttle valve shaft and a ball between them. The axis of a pump chamber in which the piston is slidably received is offset from and eccentric to the axis of rotation of the throttle shaft so that little fuel is supplied to the operating engine by the accelerator pump as the shaft is rotated to move the throttle valve from its idle position to an intermediate position and most of the fuel supplied by the accelerator pump to the engine is delivered as the shaft is rotated to move the throttle valve from the intermediate position to its wide open throttle position. This provides a proper fuel mixture to the engine to accelerate it and avoids the problem of supplying an overly rich fuel mixture to the engine during acceleration and particularly if the operator moves the throttle valve several times back and forth between the idle and intermediate positions before moving the throttle valve to the wide open position to accelerate the engine.

摘要翻译： 本发明涉及一种用于内燃机的化油器，该化油器在化油器中具有加速器燃油泵，该化油器具有由节气门轴上的凸轮驱动的活塞和位于它们之间的球。 其中活塞可滑动地容纳在其中的泵室的轴线偏离并偏心于节气门轴的旋转轴线，使得当轴被旋转以移动节气门时通过加速器泵将少量燃料供应到工作发动机 阀从其怠速位置移动到中间位置，并且随着轴被旋转以将节气门阀从中间位置移动到其全开节气门位置，由加速器泵供应到发动机的大部分燃料被输送。 这为发动机提供适当的燃料混合物来加速它并且避免在加速期间向发动机提供过浓的燃料混合物的问题，特别是如果操作者在移动之前在怠速位置和中间位置之间来回移动节气门几次 节气门到大开位置以加速发动机。

公开(公告)号：EP1138924A3

公开(公告)日：2003-07-09

申请号：EP01108174.2

申请日：2001-03-30

申请人： Walbro Japan, Inc.

发明人： Nagata, Noriyuu ,  Hayashi, Toshihiro

IPC分类号： F02M3/10 ,  F02M19/04

CPC分类号： F02M19/04 ,  F02M3/10 ,  Y10S261/38

摘要： A carburetor fuel mixture adjustment assembly has a threadable holder which suppresses rotation of a needle valve body disposed within an elongated receptacle defined within a carburetor body. The threadable holder is rigidly engaged within a threading chamber of the receptacle. During assembly, the needle valve body is extended through a bore of the holder as a threading portion of the valve body rotateable cuts an interior threading groove into the threadable holder. The threadable holder is held rigidly within the threading chamber by the carburetor body. A sealing holder is disposed within the receptacle axially inward of the threadable holder and is prevented from rotating within the receptacle by the threadable holder. A stem holder portion of the sealing holder assures a needle portion of the needle valve assembly remains concentrically disposed within an outlet orifice of a fuel chamber of the receptacle. A shank holder portion of the sealing holder engages radially between a shank chamber wall of the carburetor, which axially defines a shank chamber of the receptacle, and the shank portion of the needle valve body disposed concentrically to and axially inward of the threading portion. Engagement of the shank holder portion prevents air from entering through the receptacle and into the sub-atmospheric fuel chamber, thereby assuring stable fuel flow through a fuel passage intersected by the fuel chamber and stable engine operation.

公开(公告)号：EP1138924A2

公开(公告)日：2001-10-04

申请号：EP01108174.2

申请日：2001-03-30

申请人： Walbro Japan, Inc.

发明人： Nagata, Noriyuu ,  Hayashi, Toshihiro

IPC分类号： F02M3/10

CPC分类号： F02M19/04 ,  F02M3/10 ,  Y10S261/38

摘要： A carburetor fuel mixture adjustment assembly has a threadable holder which suppresses rotation of a needle valve body disposed within an elongated receptacle defined within a carburetor body. The threadable holder is rigidly engaged within a threading chamber of the receptacle. During assembly, the needle valve body is extended through a bore of the holder as a threading portion of the valve body rotateable cuts an interior threading groove into the threadable holder. The threadable holder is held rigidly within the threading chamber by the carburetor body. A sealing holder is disposed within the receptacle axially inward of the threadable holder and is prevented from rotating within the receptacle by the threadable holder. A stem holder portion of the sealing holder assures a needle portion of the needle valve assembly remains concentrically disposed within an outlet orifice of a fuel chamber of the receptacle. A shank holder portion of the sealing holder engages radially between a shank chamber wall of the carburetor, which axially defines a shank chamber of the receptacle, and the shank portion of the needle valve body disposed concentrically to and axially inward of the threading portion. Engagement of the shank holder portion prevents air from entering through the receptacle and into the sub-atmospheric fuel chamber, thereby assuring stable fuel flow through a fuel passage intersected by the fuel chamber and stable engine operation.

摘要翻译： 化油器燃料混合物调节组件具有一个可螺纹的保持器，该保持器抑制设置在化油器体内限定的细长插座内的针阀体的旋转。 可螺纹保持器刚性地接合在容器的穿线室内。 在组装期间，当阀体的螺纹部分可旋转时，针阀体延伸穿过保持器的孔，将内部穿线槽切割成可螺纹保持器。 可通过化油器主体将螺纹保持器刚性地保持在穿线室内。 密封保持器设置在容器的轴向向内的螺纹保持器内，并且通过可螺纹保持器防止在容器内旋转。 密封保持器的杆保持器部分确保针阀组件的针部分保持同心地设置在容器的燃料室的出口孔内。 密封保持器的柄保持器部分径向地接合在化油器的柄室壁之间，其轴向地限定了容器的柄室，并且针阀体的柄部与穿线部分同心地设置并轴向向内设置。 杆支架部分的接合防止空气通过容器进入次大气燃料室，从而确保通过与燃料室相交的燃料通道和稳定的发动机运行的稳定的燃料流动。

公开(公告)号：EP1026389A2

公开(公告)日：2000-08-09

申请号：EP00101810.0

申请日：2000-01-28

申请人： Walbro Japan, Inc.

发明人： Endo, Masatoshi ,  Nagata, Noriyuu

IPC分类号： F02M7/06

CPC分类号： F02M7/08 ,  F02M7/06

摘要： A carburetor for an internal combustion engine with an accelerator fuel pump in the carburetor having a piston actuated by a cam on a throttle valve shaft and a ball between them. The axis of a pump chamber in which the piston is slidably received is offset from and eccentric to the axis of rotation of the throttle shaft so that little fuel is supplied to the operating engine by the accelerator pump as the shaft is rotated to move the throttle valve from its idle position to an intermediate position and most of the fuel supplied by the accelerator pump to the engine is delivered as the shaft is rotated to move the throttle valve from the intermediate position to its wide open throttle position. This provides a proper fuel mixture to the engine to accelerate it and avoids the problem of supplying an overly rich fuel mixture to the engine during acceleration and particularly if the operator moves the throttle valve several times back and forth between the idle and intermediate positions before moving the throttle valve to the wide open position to accelerate the engine.

摘要翻译： 在化油器中具有加速器燃料泵的内燃机的化油器具有由节气门轴上的凸轮和它们之间的球致动的活塞。 其中活塞可滑动地容纳的泵室的轴线偏离节流轴的旋转轴线并偏心于轴，因此当轴旋转以便使节流阀运动时，由加速器泵向操作引擎提供少量燃料 阀从其怠速位置到中间位置，并且由加速器泵供给发动机的大部分燃料随着轴旋转而被传送，从而将节流阀从中间位置移动到其大的打开节气门位置。 这为发动机提供了适当的燃料混合物以加速发动机，并且避免了在加速期间向发动机供应过度浓缩的燃料混合物的问题，特别是如果操作者在移动之前在空转和中间位置之间来回移动节流阀几次 节气门到大开的位置，加速发动机。