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1. 发明专利

JP2003035578A Thermal type flow measuring device 有权
标题翻译：热式流量测量装置
公开(公告)号：JP2003035578A
公开(公告)日：2003-02-07
申请号：JP2001224715
申请日：2001-07-25
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： KAMIYAMA KEI , WATANABE IZUMI , NAKADA KEIICHI , HORIE JUNICHI
IPC分类号： G01F1/00 , G01F1/684 , G01F1/688 , G01F15/02
CPC分类号： G01F1/688 , G01F1/684
摘要： PROBLEM TO BE SOLVED: To provide a thermal type flow measuring device which accurately detects a flow rate without being affected by the heat caused by self-heating of an electronic circuit or the heat existing in a main passage. SOLUTION: A support member 7 on which a flow rate detecting element 9 including a heating resistor and electronic circuit parts 8 obtaining the amount of air based on a flow rate signal detected by the flow rate detecting element 9 are mounted, is cooled in both directions of a main stream direction of the main passage 2 and an anti-main stream direction (i.e., direction reverse to the main stream direction).
摘要翻译：要解决的问题：提供一种在不受电子电路的自身加热引起的热量或主通道中存在的热量的影响的情况下精确地检测流量的热式流量测量装置。解决方案：在其上安装有包括加热电阻器和基于由流量检测元件9检测的流量信号获得空气量的电子电路部件8的流量检测元件9的支撑构件7在两个方向上被冷却主通道2的主流方向和反主流方向（即，与主流方向相反的方向）。

2. 发明专利

JP2004020454A Flow meter and flow meter system 有权
公开(公告)号：JP2004020454A
公开(公告)日：2004-01-22
申请号：JP2002177870
申请日：2002-06-19
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： SUGAYA ATSUSHI , MATSUMOTO MASAHIRO , IGARASHI SHINYA , HANZAWA KEIJI , KAMIYAMA KEI
IPC分类号： G01F1/00 , F02D45/00 , G01F1/38 , G01F1/68 , G01F1/684 , G01F1/696 , G01F1/72
CPC分类号： G01F1/6965 , G01F1/6845 , G01F1/696 , G01F1/72
摘要： PROBLEM TO BE SOLVED: To solve a problem wherein a pulsation error generated by external pulsation under the environment where a pulsation and a back-flow is great inside an intake pipe is difficult to be reduced, in a thermal type air flowmeter for measuring an intake air volume in an internal combustion engine for an automobile or the like. SOLUTION: In this flowmeter provided with a detecting element for outputting a nonlinear signal in response to a flow rate, and a regulation device for regulating the output signal from the detecting element for control, the regulation device conducts output regulation processing for regulating dispersion of the detecting element in the output signal, and ununiformed linearization processing for regulating an average value of the output signals after the regulation processing by a parameter for the regulation. COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2006283765A Physical quantity detection device for engine 有权
标题翻译：发动机物理量检测装置
公开(公告)号：JP2006283765A
公开(公告)日：2006-10-19
申请号：JP2006129008
申请日：2006-05-08
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： WATANABE IZUMI , SAITO TADAO , OZAWA MASAYUKI , NAKADA KEIICHI , KAMIYAMA KEI
IPC分类号： F02D35/00 , F01N13/00 , F01N99/00 , G01F1/68 , G01F1/684 , G01L23/24 , G12B17/06
摘要： PROBLEM TO BE SOLVED: To prevent a deterioration in the precision of measurement of a sensor in hostile surroundings in terms of heat within an engine room of an automobile. SOLUTION: A structural member is provided which has low thermal conductivity and a low rate of radiation by using a resin member coated with metal for the structural member such as a subpassage 11a for mounting a detection element for detecting the temperature of suction air, a housing 15 or the like. Then a temperature rise caused by thermal conduction and a temperature rise caused by radiation heat can be reduced simultaneously. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了防止在汽车的发动机室内的热量方面的恶劣环境中的传感器的测量精度的劣化。解决方案：通过使用涂覆有金属的树脂构件来提供具有低导热性和低辐射率的结构构件，用于诸如用于检测吸入空气温度的检测元件的诸如子通路11a的结构构件，壳体15等。然后，可以同时降低由热传导引起的温度上升和由辐射热引起的温度升高。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2003083788A Flow rate-measuring apparatus 有权
标题翻译：流量测量装置
公开(公告)号：JP2003083788A
公开(公告)日：2003-03-19
申请号：JP2001274402
申请日：2001-09-11
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： NAKADA KEIICHI , WATANABE IZUMI , HORIE JUNICHI , KAMIYAMA KEI , ONIKAWA HIROSHI , YAMADA MASAMICHI
IPC分类号： G01F1/00 , G01F1/684 , G01F5/00 , G01F15/12
CPC分类号： G01F1/684 , G01F1/6842 , G01F5/00 , G01F15/12
摘要： PROBLEM TO BE SOLVED: To provide a flow rate-measuring apparatus which does not damage a flow rate measurement element, is highly reliable even after long use, and has improved pulsating characteristics even in a state where dust and moisture are present in an aspiration pipe. SOLUTION: An introduction means is provided near the outlet of a sub passage in the flow rate-measuring apparatus, where the introduction means introduces the flow in the opposite direction of the main passage into the sub passage via the outlet.
摘要翻译：要解决的问题：为了提供不损害流量测量元件的流量测量装置，即使长时间使用也是高度可靠的，并且即使在吸入管中存在灰尘和湿气的状态下也具有改善的脉动特性。解决方案：在流量测量装置中的副通道出口附近设置引入装置，其中引入装置将主流道的相反方向的流动经由出口引入副通道。

5. 发明专利

JP2006162631A Thermal flow measurement device 有权
标题翻译：热流量测量装置
公开(公告)号：JP2006162631A
公开(公告)日：2006-06-22
申请号：JP2006002535
申请日：2006-01-10
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： WATANABE IZUMI , HORIE JUNICHI , NAKADA KEIICHI , KAMIYAMA KEI
IPC分类号： G01F1/684 , F02D35/00
摘要： PROBLEM TO BE SOLVED: To provide a thermal flow measurement device with high reliability capable of preventing a liquid such as a water droplet from sticking to a sensor element for detecting the flow rate. SOLUTION: A plurality of grooves 2 are formed on the inner wall of a sub channel 6 so as to be inclined at an angle of about 45 degree to the flow 10 of fluid and headed in the direction in which a large centrifugal force is generated in the sub channel 6. If the water droplet 21 sticks to the inner wall of the sub channel 6, the water droplet 21 comes into contact with the plurality of grooves 2 and is captured in the plurality of grooves 2 by the surface tension. Then, the water droplet 21 is moved along the groove 2 and onto the side wall on the side where a large centrifugal force is generated by the flow 10 of fluid in the sub channel 6. The water droplet 21 being moved to the side wall is directed toward an outlet aperture 8 while being applied with the centrifugal force so as not to be separated from the side wall. Therefore, the water droplet 21 does not stick to the sensor element 4 for flow measurement, and the thermal flow measurement device with high reliability can be achieved. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种具有高可靠性的热流测量装置，其能够防止诸如水滴的液体粘附到用于检测流量的传感器元件。解决方案：在子通道6的内壁上形成有多个槽2，以与流体的流动10成大约45度的角度倾斜，并沿着大的离心力在子通道6中产生。如果水滴21粘附到子通道6的内壁，则水滴21与多个槽2接触并且通过表面张力被捕获在多个槽2中。然后，水滴21沿着沟槽2移动到通过副通道6中的流体的流动10产生大的离心力的一侧的侧壁上。移动到侧壁的水滴21是指向出口孔8，同时施加离心力，以便不与侧壁分离。因此，水滴21不粘附到用于流量测量的传感器元件4，并且可以实现具有高可靠性的热流量测量装置。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2006064710A Thermal flow measuring device 有权
标题翻译：热流量测量装置
公开(公告)号：JP2006064710A
公开(公告)日：2006-03-09
申请号：JP2005336181
申请日：2005-11-21
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： WATANABE IZUMI , HORIE JUNICHI , NAKADA KEIICHI , KAMIYAMA KEI , YAMADA MASAMICHI
IPC分类号： G01F1/698 , G01F1/68 , G01F1/684 , G01F1/692
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive and reliable thermal flow measuring device capable of precisely detecting the flow even under a thermally severe environment such as engine room. SOLUTION: All resistances constituting a constant temperature difference control are formed of temperature-sensitive bodies of the same material in the same substrate. Thus, the resistances for the constant temperature difference control are exposed to the same environmental condition. Therefore, even if change over time occurs, substantially similar change over time occurs. When the resistances for the constant temperature difference control change over time at the same ratio, the output error becomes very small. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种便宜且可靠的热流测量装置，即使在诸如发动机室的严酷环境下也能够精确地检测流量。解决方案：构成恒温差控制的所有电阻由同一基板中相同材料的温度敏感体形成。因此，恒温差控制的电阻暴露在相同的环境条件下。因此，即使随时间发生变化，也会发生与时间基本相似的变化。当恒温差控制的电阻以相同的比例随时间变化时，输出误差变得非常小。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2005128038A Air flow rate measuring device 有权
标题翻译：空气流量测量装置
公开(公告)号：JP2005128038A
公开(公告)日：2005-05-19
申请号：JP2005035366
申请日：2005-02-14
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： ONIKAWA HIROSHI , WATANABE IZUMI , IGARASHI SHINYA , NAKADA KEIICHI , KAMIYAMA KEI
IPC分类号： G01F1/00 , G01F1/684
摘要： PROBLEM TO BE SOLVED: To provide a heat element type air flow rate measuring device reducing dirt, deterioration along with the time, and breakage of a flow rate measuring element due to dust and droplets in intake air. SOLUTION: In this air flow rate measuring device, the flow passage shape of an auxiliary passage, in which the air flow rate measuring element is installed, is defined. Without using any new production method or the like, the heat element type air flow rate measuring device can be provided at a low cost. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种减少污垢，随时间劣化以及由于进气中的灰尘和液滴引起的流量测量元件破裂的热元件式空气流量测量装置。解决方案：在该空气流量测量装置中，限定安装有空气流量测量元件的辅助通道的流路形状。在不使用任何新的制造方法等的情况下，可以以低成本提供热元件式的空气流量测量装置。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2003083789A Flow rate-measuring apparatus 审中-公开
标题翻译：流量测量装置
公开(公告)号：JP2003083789A
公开(公告)日：2003-03-19
申请号：JP2001276679
申请日：2001-09-12
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： KAMIYAMA KEI , WATANABE IZUMI , IDE KIYOTOMO
IPC分类号： G01F1/00 , G01F1/684 , G01F15/14
摘要： PROBLEM TO BE SOLVED: To provide a reliable flow rate-measuring apparatus having a structure for preventing gas from entering from a passage where gas to be measured flows to an electronic circuit section without increasing costs greatly. SOLUTION: A sub passage 2 incorporating flow rate detection elements 3a and 3b is arranged in a passage 1 where gas to be measured flows, and the detection elements 3a and 3b are supported by metal terminal pins 4a and 4b and are connected to an electronic circuit 6. On portion of the terminal pins 4a and 4b is exposed to the outside of passages 1 and 2 by separate holes 5a and 5b. Even if a corrosive gas or the like enters the gap between the resins of the terminal pins 4a and 4b from the passage 2, the gas is dispersed into the air from the holes 5a and 5b if the gas reaches the holes 5a and 5b and does not enter the inside of a housing case 7 where the electronic circuit 6 is located. Additionally, only a process for forming the holes 5a-5d may be added, thus preventing manufacturing costs from increasing greatly.
摘要翻译：要解决的问题：提供一种可靠的流量测量装置，其具有防止气体从要测量的气体流入电子电路部分的通道的结构，而不会大大增加成本。解决方案：一个流量检测元件3a和3b的副通道2设置在通道1中，待测气体流动，检测元件3a和3b由金属端子销4a和4b支撑，并连接到电子电路端子销4a和4b的一部分通过单独的孔5a和5b暴露于通道1和2的外部。即使腐蚀性气体等从通道2进入端子销4a和4b的树脂之间的间隙，如果气体到达孔5a和5b，则气体从孔5a和5b分散到空气中，并且不进入电子电路6所在的壳体7的内部。另外，也可以仅添加形成孔5a-5d的工序，防止制造成本大幅增加。

9. 发明专利

JP2003185481A FLOWRATE-MEASURING APPARATUS 有权
公开(公告)号：JP2003185481A
公开(公告)日：2003-07-03
申请号：JP2001386534
申请日：2001-12-19
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： NAKADA KEIICHI , WATANABE IZUMI , HORIE JUNICHI , KAMIYAMA KEI
IPC分类号： G01F1/68 , F02D35/00 , F02D41/18 , G01F1/684 , G01F1/72 , G01F5/00
摘要： PROBLEM TO BE SOLVED: To provide a flowrate-measuring apparatus that accurately outputs a signal even if pulsation flow at a high engine speed and that with back flow occur. SOLUTION: In the flowrate-measuring apparatus that is equipped with a flowrate measurement element having the pattern of at least a heat generation resistor on a plate-shaped side, and a subpassage where the flowrate measurement element is arranged, first and second outlets are formed. The first outlet allows fluid flowing on the surface of the flowrate measurement element to flow out. The second outlet allows fluid on the rear of the flowrate measurement element to flow out, and is formed at a position that differs from the first outlet. COPYRIGHT: (C)2003,JPO

10. 发明专利

JP2001124604A THERMAL-TYPE AIR FLOW SENSOR 失效
公开(公告)号：JP2001124604A
公开(公告)日：2001-05-11
申请号：JP30350699
申请日：1999-10-26
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： KAMIYAMA KEI , WATANABE IZUMI , NAKADA KEIICHI
IPC分类号： G01F1/68
摘要： PROBLEM TO BE SOLVED: To provide a highly reliable thermal-type air flow sensor with little characteristic change even in a severe environment such as an engine room. SOLUTION: A semiconductor sensor element has a measurement portion including a temperature sensing resistance element formed on a semiconductor substrate and a heating resistance element formed on a thin walled part of the semiconductor substrate. The sensor element is formed in a recessed part of a recessed laminate substrate in such a manner that the measurement portion of the sensor element is substantially flush with a surface of the laminate substrate. A circuit for controlling the sensor is mounted on a substrate other than the laminate substrate. The laminate substrate mounted with the sensor element is electrically connected to the substrate mounted with the control circuit.

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