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公开(公告)号：US5631415A
公开(公告)日：1997-05-20
申请号：US514851
申请日：1995-08-14
CPC分类号： G01F5/00 , G01F1/6842
摘要： An air flow rate measuring device for measuring intake air flow rate in an automotive engine, improved to reduce any error attributable to variation in the configurations of air cleaner and/or duct forming air passage upstream of the flow rate measuring device, thus offering high accuracy of the flow rate measurement. In one aspect of the invention, the inlet opening of a sub-air passage is disposed to contain the axis of a main air passage, while the outlet opening of the sub-air passage is disposed in the vicinity of a wall defining the main air passage. In order to cause a local reduction of the pressure of the principal of the air flow at the outlet opening, a protrusion or a flat surface which causes impediment to the flow if air in the main air passage is provided immediately upstream of the outlet opening. In another aspect, the inlet surface in which the inlet of the sub-air passage opens is stepped in the direction of flow of the air so as to enable air to be introduced into air flow rate measuring portion in the sub-air passage from different regions in the main air passage while giving a preselected order of preference to these different regions.
摘要翻译： 一种用于测量汽车发动机中的进气流量的空气流量测量装置，其改进以减少由于流量测量装置上游空气滤清器和/或导管形成空气通道的结构变化引起的任何误差，从而提供高精度 的流量测量。 在本发明的一个方面，副空气通道的入口设置成容纳主空气通道的轴线，而副空气通道的出口设置在限定主空气的壁的附近 通道。 为了使出口开口处的空气流的本征压力局部地减小，突起或平坦表面在紧邻导出口的上游处设置有主空气通道中的空气，从而阻碍流动。 另一方面，副空气通路的入口打开的入口表面沿着空气的流动方向是阶梯式的，从而能够使空气从不同的空气通道引入到副空气通道中的空气流量测量部分 主空气通道中的区域，同时给予这些不同区域的预选顺序。
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公开(公告)号：US5467648A
公开(公告)日：1995-11-21
申请号：US120542
申请日：1993-09-14
CPC分类号： G01F5/00 , G01F1/6842
摘要： An air flow rate measuring device for measuring intake air flow rate in an automotive engine, improved to reduce any error attributable to variation in the configurations of air cleaner and/or duct forming air passage upstream of the flow rate measuring device, thus offering high accuracy of the flow rate measurement. In one aspect of the invention, the inlet opening of a sub-air passage is disposed to contain the axis of a main air passage, while the outlet opening of the sub-air passage is disposed in the vicinity of a wall defining the main air passage. In order to cause a local reduction of the pressure of the principal of the air flow at the outlet opening, a protrusion or a flat surface which causes impediment to the flow if air in the main air passage is provided immediately upstream of the outlet opening. In another aspect, the inlet surface in which the inlet of the sub-air passage opens is stepped in the direction of flow of the air so as to enable air to be introduced into air flow rate measuring portion in the sub-air passage from different regions in the main air passage while giving a preselected order of preference to these different regions.
摘要翻译： 一种用于测量汽车发动机中的进气流量的空气流量测量装置，其改进以减少由于流量测量装置上游空气滤清器和/或导管形成空气通道的结构变化引起的任何误差，从而提供高精度 的流量测量。 在本发明的一个方面，副空气通道的入口设置成容纳主空气通道的轴线，而副空气通道的出口设置在限定主空气的壁的附近 通道。 为了使出口开口处的空气流的本征压力局部地减小，突起或平坦表面在紧邻导出口的上游处设置有主空气通道中的空气，从而阻碍流动。 另一方面，副空气通路的入口打开的入口面沿着空气的流动方向阶梯状，以使得空气能够从不同的空气通道引入到副空气通道中的空气流量测量部分 主空气通道中的区域，同时给予这些不同区域的预选顺序。
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公开(公告)号：US06189379B1
公开(公告)日：2001-02-20
申请号：US09362190
申请日：1999-07-28
IPC分类号： G01F500
CPC分类号： G01F1/684 , G01F1/6842 , G01F5/00
摘要： A thermal type air flow measuring instrument is mounted to a main passage forming an intake air passage of an internal combustion engine and is provided. with an auxiliary passage which includes a heating resistor and a temperature sensing resistor therein and an electronic circuit which is electrically connected to the heating resistor and the temperature sensing resistor. The auxiliary passage is a passage including at least one bent portion composed of a first path substantially parallel to the main passage and a second path having a path different in flow direction from the first path. A member forming the auxiliary passage is fixed in a united form to only a case member for interiorly protecting the electronic circuit, and the case member is fixed to the outer wall surface of the intake air passage. The auxiliary passage structure capable of being handled as a single module united to the case member is effective to the mass production of an air flow control system and the reduction in cost thereof since the structure can be mounted to different kinds of internal combustion engines.
摘要翻译： 一种热式气流测量仪安装在形成内燃机进气通道的主通道上。 具有在其中包括加热电阻器和温度感测电阻器的辅助通道和电连接到加热电阻器和温度感测电阻器的电子电路。 辅助通道是包括由基本上平行于主通道的第一路径组成的至少一个弯曲部分和具有与第一路径不同的流动方向的路径的通道。 形成辅助通道的部件被联合地固定到仅用于内部保护电子电路的壳体部件，并且壳体部件固定到进气通道的外壁表面。 能够作为与壳体构件联合的单个模块来处理的辅助通道结构对于大量生产空气流量控制系统和降低成本是有效的，因为该结构可以安装到不同种类的内燃机上。
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公开(公告)号：US5939628A
公开(公告)日：1999-08-17
申请号：US112144
申请日：1998-07-09
CPC分类号： G01F1/684 , G01F1/6842 , G01F5/00
摘要： A thermal type air flow measuring instrument is mounted to a main passage forming an intake air passage of an internal combustion engine and is provided with an auxiliary passage which includes a heating resistor and a temperature sensing resistor therein and an electronic circuit which is electrically connected to the heating resistor and the temperature sensing resistor. The auxiliary passage is a passage including at least one bent portion composed of a first path substantially parallel to the main passage and a second path having a path different in flow direction from the first path. A member forming the auxiliary passage is fixed in a united form to only a case member for interiorly protecting the electronic circuit, and the case member is fixed to the outer wall surface of the intake air passage. The auxiliary passage structure capable of being handled as a single module united to the case member is effective to the mass production of an air flow control system and the reduction in cost thereof since the structure can be mounted to different kinds of internal combustion engines.
摘要翻译： 一种热式气流测量仪安装在形成内燃机进气通道的主通道上，并在其中设有一个辅助通道，该通道包括一个加热电阻器和一个温度感测电阻器，以及一个电连接到 加热电阻和温度检测电阻。 辅助通道是包括由基本上平行于主通道的第一路径组成的至少一个弯曲部分和具有与第一路径不同的流动方向的路径的通道。 形成辅助通道的部件被联合地固定到仅用于内部保护电子电路的壳体部件，并且壳体部件固定到进气通道的外壁表面。 能够作为与壳体构件联合的单个模块来处理的辅助通道结构对于大量生产空气流量控制系统和降低成本是有效的，因为该结构可以安装到不同种类的内燃机上。
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公开(公告)号：US5789673A
公开(公告)日：1998-08-04
申请号：US452867
申请日：1995-05-30
CPC分类号： G01F5/00 , G01F1/6842
摘要： A thermal type air flow measuring instrument is mounted to a main passage forming an intake air passage of an internal combustion engine and is provided with an auxiliary passage which includes a heating resistor and a temperature sensing resistor therein and an electronic circuit which is electrically connected to the heating resistor and the temperature sensing resistor. The auxiliary passage is a passage including at least one bent portion composed of a first path substantially parallel to the main passage and a second path having a path different in flow direction from the first path. A member forming the auxiliary passage is fixed in a united form to only a case member for interiorly protecting the electronic circuit, and the case member is fixed to the outer wall surface of the intake air passage. The auxiliary passage structure capable of being handled as a single module united to the case member is effective to the mass production of an air flow control system and the reduction in cost thereof since the structure can be mounted to different kinds of internal combustion engines.
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6.发明授权公开(公告)号：US06427668B1
公开(公告)日：2002-08-06
申请号：US09769366
申请日：2001-01-26
IPC分类号： G01F168
CPC分类号： F02D41/187 , G01F1/6842 , G01F1/699 , G01F5/00
摘要： The thermal-type airflow meter comprises airflow meter body 86 and measuring part 87. Both of the frame 31 of the housing 3 accommodating therein the electronic circuit 6 and the subpassage member 4 having the heating resistor 1 etc. positioned within a subpassage of air are arranged on the metallic base 5. Further, the frame 31, the subpassage member 4, the metallic base 5 and the cover 9 are adhered to respectively different member more than one. The connector 32 of the housing 3, the frame 31 and the subpassage member 4 are formed in a flat shape to form the measuring module 87. The measuring module 87 is inserted through the insertion hole 83 to locate the heating resistor 1 within the main air passage 81, and the fixing flange 36 of the housing 3 is fixedly attached to the airflow meter body 86.
摘要翻译： 热式气流计包括气流计主体86和测量部分87.容纳在其中的电子电路6的壳体3的框架31和具有位于空气的通过之内的具有加热电阻器1等的次通道部件4都是 布置在金属基座5上。此外，框架31，子通道构件4，金属基座5和盖9分别粘附在不同的构件上。 壳体3的连接器32，框架31和子通道构件4形成为平坦的形状以形成测量模块87.测量模块87插入穿过插入孔83以将加热电阻器1定位在主空气 通道81和壳体3的固定凸缘36固定地附接到气流计主体86。
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公开(公告)号：US5325712A
公开(公告)日：1994-07-05
申请号：US140813
申请日：1993-10-21
CPC分类号： G01F1/6842 , G01F1/684 , G01F5/00
摘要： An air flow meter has a body forming a main passage defining an intake air passage of an internal combustion engine. An auxiliary passage within the main passage has a longitudinal passage in the axial direction and at least one transverse passage in the radial direction of the main passage. The auxiliary passage is defined by a member having a radially directed portion connected to an internal wall of the main passage. A hollow space is provided in the radially directed portion to render the wall thickness of the radially directed portion substantially uniform. Additionally, the hollow space is separated from the longitudinal passage by an auxiliary member which, in a preferred embodiment, surrounds a heat sensitive resistor.
摘要翻译： 空气流量计具有形成限定内燃机的进气通道的主通道的主体。 主通道内的辅助通道具有沿轴向的纵向通道和主通道的径向方向上的至少一个横向通道。 辅助通道由具有连接到主通道的内壁的径向指向部分的构件限定。 在径向指向部分设置中空空间，以使径向指向部分的壁厚基本上均匀。 此外，中空空间通过辅助构件与纵向通道分离，在优选实施例中，辅助构件围绕热敏电阻器。
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8.发明授权公开(公告)号：US06182639B2
公开(公告)日：2001-02-06
申请号：US09475276
申请日：1999-12-30
IPC分类号： G01F168
CPC分类号： G01F5/00 , F02D41/187 , G01F1/6842 , G01F1/699
摘要： A thermal-type airflow meter comprises an airflow meter body and a measuring part. Both of the frame of a housing which accommodates the electronic circuit, and a sub-passage member which has the heating resistor positioned within a sub-passage, are arranged on a metallic base. Further, the frame, the sub-passage member, the metallic base and the cover are each fixedly attached to at least two respective different members. A connector of the housing, the frame and the sub-passage member are formed in a flat shape to form the measuring module. The measuring module is inserted through an insertion hole to locate the heating resistor within the main air passage, and the fixing flange of the housing is fixedly attached to the airflow meter body.
摘要翻译： 热式气流计包括气流计主体和测量部件。 容纳电子电路的壳体的框架和具有位于子通路内的加热电阻器的子通道构件布置在金属底座上。 此外，框架，子通道构件，金属基座和盖子都固定地附接到至少两个相应的不同构件。 壳体，框架和副通路构件的连接器形成为平坦形状以形成测量模块。 测量模块通过插入孔插入，将发热电阻器定位在主空气通道内，壳体的固定法兰固定在气流计主体上。
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9.发明授权
公开(公告)号：US6012432A
公开(公告)日：2000-01-11
申请号：US105050
申请日：1998-06-26
CPC分类号： G01F5/00 , F02D41/187 , G01F1/6842 , G01F1/699
摘要： A thermal-type airflow meter comprises an airflow meter body and a measuring part. Both of the frame of a housing which accommodates the electronic circuit, and a sub-passage member which has the heating resistor positioned within a sub-passage, are arranged on a metallic base. Further, the frame, the sub-passage member, the metallic base and the cover are each fixedly attached to at least two respective different members. A connector of the housing, the frame and the sub-passage member are formed in a flat shape to form the measuring module. The measuring module is inserted through an insertion hole to locate the heating resistor within the main air passage, and the fixing flange of the housing is fixedly attached to the airflow meter body.
摘要翻译： 热式气流计包括气流计主体和测量部件。 容纳电子电路的壳体的框架和具有位于子通路内的加热电阻器的子通道构件布置在金属底座上。 此外，框架，子通道构件，金属基座和盖子都固定地附接到至少两个相应的不同构件。 壳体，框架和副通路构件的连接器形成为平坦形状以形成测量模块。 测量模块通过插入孔插入，将发热电阻器定位在主空气通道内，壳体的固定法兰固定在气流计主体上。
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公开(公告)号：US07213455B2
公开(公告)日：2007-05-08
申请号：US11012290
申请日：2004-12-16
申请人： Chihiro Kobayashi , Shinya Igarashi
发明人： Chihiro Kobayashi , Shinya Igarashi
IPC分类号： G01F1/68
CPC分类号： G01F1/6983 , F02D41/187 , G01F1/6965
摘要： A thermal type gas flow measuring instrument measures gas flow with high precision by accurately correcting changes in radiation heat characteristics of a heating resistor due to contamination. The instrument comprises a second heating resistor 30 whose resistance value, which changes if contaminated, is calculated by measuring the terminal voltage thereof by calculating means 32, and the calculated value is compared with a temperature detected by a temperature detecting element 31. Based on the result of comparison, the level of contamination of the second heating resistor 30 is determined. The second heating resistor 30 and the first heating resistor 3 are disposed in similar environments such that their levels of contamination can be considered equal. Based on the level of contamination calculated from the result of comparison, a correction value is calculated and the output of the first heating resistor 3 is corrected in accordance with the correction value.
摘要翻译： 热式气体流量测量仪器通过精确地校正由于污染导致的加热电阻器的辐射热特性的变化，高精度地测量气体流量。 仪器包括第二加热电阻器30，其通过计算装置32测量其端电压来计算其污染时的电阻值，并将该计算值与由温度检测元件31检测到的温度进行比较。基于 比较结果确定了第二加热电阻器30的污染程度。 第二加热电阻器30和第一加热电阻器3设置在类似的环境中，使得它们的污染程度可以被认为是相等的。 根据比较结果计算出的污染程度，计算校正值，根据校正值校正第一加热电阻体3的输出。
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