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1.发明公开Thermal type air flow measuring instrument for internal combustion engine 失效系统加热器Vorrichtung zum Messen derLuftströmung在einer Brennkraftmaschine
公开(公告)号：EP0685713A2
公开(公告)日：1995-12-06
申请号：EP95107996.1
申请日：1995-05-24
IPC分类号： G01F1/68
CPC分类号： G01F1/6842 , G01F1/684 , G01F5/00
摘要： A thermal type air flow measuring instrument is mounted to a main passage (5) forming an intake air passage of an internal combustion engine and is provided with an auxiliary passage (3) which includes a heating resistor (1) and a temperature sensing resistor (2) therein and an electronic circuit (8) 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 (303) composed of a first path (302) substantially parallel to the main passage and a second path (302) having a path different in flow direction from the first path. A member (4) 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的进气通道的主通道（5）上，并具有一个辅助通道（3），它包括一个加热电阻（1）和一个温度检测电阻（ 2）和电连接到加热电阻器和温度感测电阻器的电子电路（8）。 辅助通道是包括由基本上平行于主通道的第一路径（302）和与第一路径的流动方向不同的路径的第二路径（302）组成的至少一个弯曲部分（303）的通道。 形成辅助通道的构件（4）以联合形式固定到仅用于内部保护电子电路的壳体构件，并且壳体构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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2.发明公开
公开(公告)号：EP0685713A3
公开(公告)日：1996-11-27
申请号：EP95107996.1
申请日：1995-05-24
IPC分类号： G01F1/68
CPC分类号： G01F1/6842 , G01F1/684 , G01F5/00
摘要： A thermal type air flow measuring instrument is mounted to a main passage (5) forming an intake air passage of an internal combustion engine and is provided with an auxiliary passage (3) which includes a heating resistor (1) and a temperature sensing resistor (2) therein and an electronic circuit (8) 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 (303) composed of a first path (302) substantially parallel to the main passage and a second path (302) having a path different in flow direction from the first path. A member (4) 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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公开(公告)号：EP0831305A1
公开(公告)日：1998-03-25
申请号：EP97116362.1
申请日：1997-09-19
摘要： The invention relates to a thermal type flow meter comprising a support member (4) formed by a material of which the coefficient Δλ of temperature of the thermal conductivity is small. The absolute value of the output error can be decreased to a value smaller than the prior art by a bridge circuit provided with a temperature compensating element (5) and several constant resistors.
摘要翻译： 本发明涉及一种热式流量计，其包括由热导率温度系数ΔτTAλλ小的材料形成的支撑构件（4）。 输出误差的绝对值可以通过具有温度补偿元件（5）和几个恒定电阻器的桥接电路减小到比现有技术小的值。
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4.发明公开
公开(公告)号：EP1804037A2
公开(公告)日：2007-07-04
申请号：EP06025564.3
申请日：1995-05-24
CPC分类号： G01F1/6842 , G01F1/684 , G01F5/00
摘要： The invention relates to a thermal type air flow measuring apparatus comprising a body (6) which provides with a main passage (5) and a module which is integrated combination of an auxiliary passage (3) having a bent portion (303) and an electronic circuit (8) electrically connected to a heating resistor (1) disposed in said auxiliary passage (3), wherein said module is attached on said body (6) which has an insertion hole (14) through which said auxiliary passage (3) of said module is inserted into said main passage, said electric circuit (8) is disposed outside of said main passage (5), and wherein said body (6) has a mounting surface (15) for mounting said module thereon, said mounting surface (15) projects from an outer surface of said body, and an inlet (301) of said auxiliary passage (3) is placed in the main passage such that a position the inlet (301) is in an area shifted from a center of a cross section of the main passage and around the center of the main passage.
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5.发明授权
公开(公告)号：EP0660090B1
公开(公告)日：2001-09-12
申请号：EP95100012.4
申请日：1988-06-15
申请人： Hitachi, Ltd.
发明人： Arai, Nobukatsu , Sekine, Yoshihito , Osawa, Tadao , Tokuda, Hiroatsu , Usui, Toshifumi , Tsutsui, Mitsukuni
CPC分类号： F02D41/187 , G01F1/6842 , G01F5/00
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公开(公告)号：EP0450563B1
公开(公告)日：1996-07-03
申请号：EP91105175.3
申请日：1991-04-02
申请人： HITACHI, LTD.
CPC分类号： G01F1/6842 , G01F5/00
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公开(公告)号：EP0831305B1
公开(公告)日：2007-08-15
申请号：EP97116362.1
申请日：1997-09-19
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8.发明公开Hot-wire type air-flow meter for internal combustion engines 失效Hitzdraht-LuftmengenmesserfürBrennkraftmaschinen
公开(公告)号：EP1221592A2
公开(公告)日：2002-07-10
申请号：EP01112908.7
申请日：1988-06-15
申请人： Hitachi, Ltd.
发明人： Arai, Nobukatsu , Sekine, Yoshihito , Osawa, Tadao , Tokuda, Hiroatsu , Usui, Toshifumi , Tsutsui, Mitsukuni
CPC分类号： F02D41/187 , G01F1/6842 , G01F5/00
摘要： The invention relates to a hot-wire type air flow meter comprising a block (230) in which an auxiliary flow path (242) is formed and a circuit unit (2) is coupled to the block (230), wherein the block (230) is inserted removably through a wall of a body (240) forming a primary flow path (241) and constituting an intake air passage of an internal combustion engine, wherein the whole auxiliary flow path (242) can be mounted to and released from the body (240) with the block (230) and wherein the auxiliary flow path (242) having an inlet portion opening to the upstream side of the primary flow path (241) and having a curved and folded auxiliary flow path (242) in order to obtain a length of the auxiliary flow path (242) being larger than the axial length of the block (230).
摘要翻译： 本发明涉及一种热丝式空气流量计，其包括其中形成有辅助流路（242）的块（230），并且电路单元（2）联接到块（230），其中块（230） ）可移除地穿过形成主流路（241）的主体（240）的壁并构成内燃机的进气通道，其中整个辅助流路（242）可以安装到 主体（240），其中辅助流动路径（242）具有通向主流路（241）的上游侧的入口部分，并且具有弯曲和折叠的辅助流动路径（242） 以获得大于所述块（230）的轴向长度的所述辅助流路（242）的长度。
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公开(公告)号：EP0295647B1
公开(公告)日：1995-09-13
申请号：EP88109534.3
申请日：1988-06-15
申请人： HITACHI, LTD.
发明人： Arai, Nobukatsu , Sekine, Yoshihito , Osawa, Tadao , Tokuda, Hiroatsu , Usui, Toshifumi , Tsutsui, Mitsukuni
CPC分类号： F02D41/187 , G01F1/6842 , G01F5/00
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10.发明公开
公开(公告)号：EP0313089A3
公开(公告)日：1990-08-29
申请号：EP88117604.4
申请日：1988-10-21
申请人： HITACHI, LTD.
发明人： Arai, Nobukatsu , Sekine, Yoshihito , Matsukura, Tetsuo , Tsutsui, Mitsukuni , Tokuda, Hiroatsu , Osawa, Tadao , Usui, Toshifumi
CPC分类号： F02D41/187 , G01F1/6842 , G01F5/00
摘要： The present invention whose object is to provide a hot wire type of flow meter (1) capable of accurately detecting a flow rate under various conditions required for satisfying a desire for low fuel consumption of an engine system and space saving in an engine room, the present invention being characterized in a hot wire type of air flow meter including a main flow passage (21) forming an air intake flow passage of an internal combustion engine, a hot wire element (2a) measuring intake air, and a bypass (12) having the hot wire element therein and disposed in the main flow passage (21), the hot wire type of air flow meter comprising: a flow passage (31a) forming the bypass, and formed in the axial direction of the main flow passage (21); and a flow passage (31c) forming the bypass and formed in the radial direction of the main flow passage, the flow passage having a structure designed in such a manner that the upper stream portion of an outlet portion thereof projects over the lower stream portion of the same.
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