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81. 发明专利

JPH09210749A HEATING ELEMENT TYPE AIR FLOW MEASURING APPARATUS 失效
公开(公告)号：JPH09210749A
公开(公告)日：1997-08-15
申请号：JP2091296
申请日：1996-02-07
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： KADOHIRO TAKASHI , SUZUKI TADAO , TSUMAGARI MAMORU , IGARASHI SHINYA , KOBAYASHI CHIHIRO
IPC分类号： G01F1/68 , F02D35/00 , G01F1/684
摘要： PROBLEM TO BE SOLVED: To detect air flow rate with high accuracy by providing a heating element and partitioners for partitioning the suction air channel disposed substantially in parallel with the direction of air flow on the opposite sides of heating element. SOLUTION: Partitioners 101 for partitioning the suction air channel are disposed in an air channel body substantially in parallel with the direction of air flow on the opposite sides of heating element 2, 3. Consequently, a disturbed air flow, generated through a bent pipe or an enlarging pipe disposed in the upstream of air channel body is straightened and the output noise is reduced. Even when an air flow measuring apparatus is disposed in the downstream of an air cleaner or a duct shaped to induce disturbance of air, output noise is reduced and the air flow can be detected with high accuracy. Furthermore, productivity can be enhanced while reducing the cost because the frequency of use of straightening grid, e.g. mesh or honeycomb, can be reduced and the reliability can be enhanced through decrease in the number of parts.

82. 发明专利

JPH09166464A AIR FLOW RATE MEASURING DEVICE AND METHOD THEREFOR 失效
公开(公告)号：JPH09166464A
公开(公告)日：1997-06-24
申请号：JP32421295
申请日：1995-12-13
申请人： HITACHI LTD
发明人： KOWATARI TAKEHIKO , ARAI NOBUKATSU , UCHIYAMA KAORU , KOBAYASHI CHIHIRO , IGARASHI SHINYA
IPC分类号： G01F1/68 , F02D41/18 , F02D45/00 , G01F1/696
摘要： PROBLEM TO BE SOLVED: To make it possible measure an engine air flow rate for obtaining an average flow rate closer to an actual situation even if a thermal type air flowmeter with response delay is used. SOLUTION: After the output of a thermal air flowmeter is A/D-converted 301, a digital signal is divided into two systems, namely a time constant is calculated by the first system and then an inverse conversion 305 for obtaining an error from the output along with the output from the second system is executed. After that, linearization 306 is performed from the characteristics of the thermal air flowmeter, thus discriminating the directions of flow and thereby obtaining a signal corresponding to the actual change in air flow rate and at the same time, discriminating the directions of flow and therefore obtaining the average value of an accurate air flow rate.

83. 发明专利

JPH0988658A AIR FUEL MEASURING DEVICE 失效
公开(公告)号：JPH0988658A
公开(公告)日：1997-03-31
申请号：JP25241095
申请日：1995-09-29
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： KADOHIRO TAKASHI , SUZUKI TADAO , TSUMAGARI MAMORU , IGARASHI SHINYA
IPC分类号： G01F1/68 , F02D35/00 , F02M35/024 , F02M35/04 , F02M69/48 , G01F1/684 , G01F15/12
摘要： PROBLEM TO BE SOLVED: To measure air flow at low cost and with high accuracy by forming a duct in such a way that cross-sectional area vertical to the air flow direction of a connecting part in a duct part is a minimum cross-sectional area part of the duct part for installing an air meter. SOLUTION: Intake air passes an air cleaner element 3 from an air cleaner inlet part and passes a main air passage 5 of a duct part 2 and an auxiliary air passage 6 installed at a circuit module part so as to be supplied to an engine. The duct 2 for installing an air flow measuring device is so formed that the cross-sectional area of a part 4 connected to an air cleaner case 1 is the smallest in the duct 2. Since the duct connecting part 4 is completely surrounded by the air cleaner case 1, thermal contraction, drawback, and the like after molding are small compared to a normal pipeline, and dimensional accuracy after molding is high. The air flow measuring device of low cost and high accuracy can thereby be obtained, and parts such as an air passage body can be cut down so as to reduce an installation space in an engine room.

84. 发明专利

JPH08219838A AIR FLOW MEASURING DEVICE 失效
公开(公告)号：JPH08219838A
公开(公告)日：1996-08-30
申请号：JP2644295
申请日：1995-02-15
申请人： HITACHI LTD , HITACHI CAR ENGINEERING KK
发明人： KADOHIRO TAKASHI , IGARASHI SHINYA , SUZUKI TADAO , TSUMAGARI MAMORU , SAITO TAKAYUKI
IPC分类号： F02D35/00 , G01F1/68 , G01F1/684 , G01F1/696
摘要： PURPOSE: To correspond with a system for taking the flow and temperature sucked in an engine and conducting the control, and to reduce size, weight and cost by providing an air flow measuring device with a heating resistor, a temperature sensitive resistor and an air temperature measuring element. CONSTITUTION: An air flow measuring device is so constructed that a heating resistor 2 and a temperature sensitive resistor 3 for measuring the flow of air are installed in the interior of a body. An element (thermistor) 8 for measuring the intake air temperature is inserted from one hole 6 provided on the wall surface of an air passage together with the heating resistor 2 and the temperature sensitive resistor 3 for measuring the air flow, and the intake air temperature measuring element 8 is installed in a circuit module part. Thus, an air flow measuring device of a very small and compact size can be provided. Furthermore, the device can be installed in any part of an intake passage wall surface, especially an air cleaner and an intake duct in the case of an automobile in addition to the body for forming a main passage by mounting an air sub-passage part 12 on the circuit module side.

85. 发明专利

JP2010043883A Mass air flow measurement device 有权
标题翻译：大气流量测量装置
公开(公告)号：JP2010043883A
公开(公告)日：2010-02-25
申请号：JP2008206518
申请日：2008-08-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SAITO TAKAYUKI , YOGO TAKAYUKI , IGARASHI SHINYA , ONIKAWA HIROSHI
IPC分类号： G01F1/684 , G01F1/68
CPC分类号： G01F1/6842 , G01F5/00 , H01L2224/48091 , H01L2924/00014
摘要： PROBLEM TO BE SOLVED: To provide a constitution of an air flow measuring device suitable for integrating a humidity detection device in addition to a temperature detection device or a pressure detection device. SOLUTION: A second bypass passage 501 bypassing a bypass passage 205 is formed and a humidity sensing device 500 is mounted in the second bypass passage 501. A second bypass passage inlet 502 and a second bypass passage outlet 503, formed in a wall surface of the bypass passage 205, open parallel to the direction of flow of air flowing in the bypass passage 205. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种除了温度检测装置或压力检测装置之外适合于整合湿度检测装置的空气流量测量装置的结构。解决方案：形成旁通旁路通道205的第二旁路通道501，并且湿度感测装置500安装在第二旁路通道501中。第二旁路通道入口502和第二旁路通道出口503形成在壁旁路通道205的表面平行于在旁路通道205中流动的空气的流动方向开口。版权所有（C）2010，JPO＆INPIT

86. 发明专利

JP2009083563A In-vehicle electronic device 有权
标题翻译：车内电子设备
公开(公告)号：JP2009083563A
公开(公告)日：2009-04-23
申请号：JP2007252960
申请日：2007-09-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ABE HIROYUKI , TAKASAGO AKIRA , IGARASHI SHINYA
IPC分类号： B60R16/02 , G01F1/684
CPC分类号： H01R13/533 , G01F1/6842 , H01R13/405 , H01R13/5216 , H01R13/6658 , H01R2201/26
摘要： PROBLEM TO BE SOLVED: To improve reliability of an in-vehicle electronic device against corrosive gas. SOLUTION: A trapping agent 17 having trap performances (such as adsorptive performance, suction performance, absorption performance and chemical reactivity) higher than water vapor with respect to the corrosive gas other than the water vapor, is held within a connector 7 having a terminal 8 insert-molded in a case 4 housing an electronic circuit. In this case, the trapping agent 17 may be held in a counterpart connector 9 of the connector 7 integrally molded in the case 4. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提高车载电子设备对抗腐蚀性气体的可靠性。解决方案：具有相对于水蒸汽以外的腐蚀性气体高于水蒸汽的捕集性能（例如吸附性能，吸附性能，吸收性能和化学反应性）的捕集剂17被保持在具有插入成型在容纳电子电路的壳体4中的端子8。在这种情况下，捕获剂17可以保持在连接器7的整体模制在壳体4中的配对连接器9中。（C）2009，JPO＆INPIT

87. 发明专利

JP2008292508A Heat generation resistor type flow measuring instrument 有权
标题翻译：热发生电阻型流量测量仪器
公开(公告)号：JP2008292508A
公开(公告)日：2008-12-04
申请号：JP2008229204
申请日：2008-09-08
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： SAITO TADAO , OZAWA MASAYUKI , IGARASHI SHINYA , ONIKAWA HIROSHI , YASUKAWA AKIO , TAKASAGO AKIRA
IPC分类号： G01F1/684
摘要： PROBLEM TO BE SOLVED: To provide a reliable slot-in type heat generation resistor type flow measuring instrument which has excellent vibration resistance, and also has structure for preventing a characteristic error caused by heat effect of an internal combustion engine. SOLUTION: The flow measuring instrument comprises: a housing provided between a frame body 4 and a connector 2 and having a support part 3 as a fixing part on a mounting part of a body 15 for forming a fluid passage; flow detection elements 7, 8 held on a frame body side of the housing; and an electronic circuit 6 held on the housing and electrically connected to the flow detection elements and connector. A highly rigid member 22 with higher rigidity than material of a main constituting member of the housing is integrally molded with the support part. The housing is positioned on the fluid passage by at least one projection 23 and a recessed part for receiving the projection provided between the mounting part and the support part. The housing is thereby fixed on the mounting part of the body through the highly rigid member. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种耐振动性优异的可靠的插入式发热电阻型流量计，还具有防止内燃机的热影响引起的特性误差的结构。流量测量装置包括：壳体，设置在框架体4和连接器2之间，并且具有作为固定部分的支撑部分3，用于形成流体通道的主体15的安装部分; 保持在壳体的框体侧的流量检测元件7,8; 以及电子电路6，其保持在壳体上并电连接到流量检测元件和连接器。与壳体的主要构成构件的材料相比刚性高的高度刚性构件22与支撑部一体地模制。壳体通过至少一个突起23和用于接收设置在安装部和支撑部之间的突起的凹部而位于流体通道上。因此，壳体通过高度刚性的构件固定在主体的安装部分上。版权所有（C）2009，JPO＆INPIT

88. 发明专利

JP2007232744A Air flow measurement module 有权
标题翻译：空气流量测量模块
公开(公告)号：JP2007232744A
公开(公告)日：2007-09-13
申请号：JP2007159639
申请日：2007-06-18
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： IGARASHI SHINYA , KOBAYASHI CHIHIRO , HIRAYAMA HIROSHI , SAITO TAKAYUKI , ARAI NOBUKATSU
IPC分类号： G01F1/684
摘要： PROBLEM TO BE SOLVED: To provide an air flow measuring module with a module integrated with a circuit part and a sub-flow-passage part provided with almost all the functions of a heat-evolution resistance type air flow measuring instrument, and capable of reducing a size and a weight. SOLUTION: The flow measuring module is provided integrally with: the sub-flow-passage having a heat-evolution resistor and a heat sensitive resistor; a fixing member for fixation; the heat-evolution resistor and the heat sensitive resistor provided in the sub-flow-passage; and an electronic circuit. The sub-flow-passage is inserted from an insertion hole provided in a body constituting a main flow passage, and the fixing member is fixed onto the body to position the sub-flow-passage in the main flow passage and is supported overhungly. The sub-flow-passage has: a duct line arranged with the heat-evolution resistor and the heat sensitive resistor; and a receiving-pan-like bottom face part provided in a side more distal from the fixing member than an inlet of the duct line, the duct line has a duct line part provided in parallel to the bottom face part, in a downstream along a direction of a main flow flowing through the main flow passage on the bottom face, and flow passage walls in sides adjacent each other between the bottom face part and the duct line part are formed respectively of planes. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种气流测量模块，其具有与电路部分集成的模块和具有几乎所有放热电阻型气流测量仪器的功能的子流路部分，以及能够减小尺寸和重量。流量测量模块一体地设置有：具有放热电阻器和热敏电阻器的副流路; 用于固定的固定构件; 所述散热电阻器和所述热敏电阻器设置在所述副流路中; 和电子电路。副流路从设置在构成主流路的主体的插入孔插入，并且固定构件固定在主体上，以将副流路定位在主流路中，并且被悬垂地支撑。副流路具有：与放热电阻器和热敏电阻器一起布置的管道线; 以及设置在比所述管道线的入口更远离所述固定构件的一侧的容纳盘状底面部，所述管道线具有沿着所述底面部的平行于所述底面部的下游侧设置的管道线部，分别形成在底面上流过主流路的主流的方向以及在底面部与导管部之间相邻的侧流路面。版权所有（C）2007，JPO＆INPIT

89. 发明专利

JP2006316709A Detection device of egr gas flow rate and engine control method 有权
标题翻译： EGR气体流量和发动机控制方法的检测装置
公开(公告)号：JP2006316709A
公开(公告)日：2006-11-24
申请号：JP2005140560
申请日：2005-05-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUKEGAWA YOSHIHIRO , YAMAOKA SHIRO , TOKUYASU NOBORU , IGARASHI SHINYA , FUKATSU KATSUAKI , KADOHIRO TAKASHI , IWAKI HIDEFUMI , ICHIHARA TAKANOBU
IPC分类号： F02M25/07 , F02D21/08 , F02D41/04 , F02D41/38 , F02D43/00
CPC分类号： F02M26/47 , F02M26/05
摘要： PROBLEM TO BE SOLVED: To prevent deterioration of the detection accuracy of a flow sensor caused by dirt and breakage of the sensor due to overheat by a flow sensor provided upstream of a throttle and by providing a flow sensor between a junction of EGR gas and fresh air and an intake pipe collector. SOLUTION: A detection device of an EGR gas flow rate has the flow sensors 9, 10 provided upstream and downstream of the junction of fresh air and EGR gas and obtains EGR gas volume from a flow rate difference between the two sensors. An EGR rate for every cylinder is estimated from the time-series values of EGR gas volume, and injection timing, an injection quantity, a pilot injection ratio and an EGR gas mixing means for every cylinder are controlled based on the estimated rate. The accuracy deterioration and breakage of the flow sensors caused by dirt and overheat can be thus prevented. Discharge of NOx and soot from the engine can be inhibited. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了防止由于由设置在节气门上游的流量传感器过热而导致的由污垢和传感器损坏引起的流量传感器的检测精度的劣化，并且在EGR的接合点之间设置流量传感器气体和新鲜空气和进气管收集器。解决方案：EGR气体流量的检测装置具有设置在新鲜空气和EGR气体的接合处的上游和下游的流量传感器9,10，并且从两个传感器之间的流量差获得EGR气体体积。根据EGR气体体积的时间序列值估计每个气缸的EGR率，并且基于估计的速率来控制每个气缸的喷射正时，喷射量，先导喷射比和EGR气体混合装置。因此可以防止由污垢和过热引起的流量传感器的精度劣化和破裂。可以抑制来自发动机的NOx和烟尘的排放。版权所有（C）2007，JPO＆INPIT

90. 发明专利

JP2006284608A Air flow measuring module 有权
标题翻译：空气流量测量模块
公开(公告)号：JP2006284608A
公开(公告)日：2006-10-19
申请号：JP2006207338
申请日：2006-07-31
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： IGARASHI SHINYA , KOBAYASHI CHIHIRO , HIRAYAMA HIROSHI , SAITO TAKAYUKI , ARAI NOBUKATSU
IPC分类号： G01F1/684 , G01F1/00
摘要： PROBLEM TO BE SOLVED: To provide a heating resistance type air flow measuring instrument of excellent attachability capable of reducing a cost, in an internal combustion engine. SOLUTION: This air flow measuring module is structured to integrate a sub-air-passage with one part of a module, and to make the single module have all the functions required for the heating resistance type air flow measuring instrument. COPYRIGHT: (C)2007,JPO&INPIT

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