专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH10300602A SEMICONDUCTOR PRESSURE SENSOR 失效
公开(公告)号：JPH10300602A
公开(公告)日：1998-11-13
申请号：JP10858997
申请日：1997-04-25
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： SUZUKI KIYOMITSU , SATO SHINYA , MIYAZAKI ATSUSHI , MIKI MASAYUKI , KUBOTA MASANORI , SASADA YOSHIYUKI , YAMAGUCHI SHINICHI , SONOBE HISAO , SHIMADA SATOSHI , MATSUMOTO MASAHIRO
IPC分类号： G01L9/04 , G01L9/00
摘要： PROBLEM TO BE SOLVED: To supply at low price a semiconductor pressure sensor capable of measuring pressure from a low pressure region to a high pressure region with high precision and excellent pressure-resistance. SOLUTION: A silicon chip has a single diaphragm 16 forming on the face a set of bridge circuits comprising a boss 17, a stopper 18 and a semiconductor distortion gauge 20, and is joined to a pedestal. When a diaphragm is deformed in response to an applied pressure, the stopper 18 is brought into contact with the pedestal by a predetermined pressure. This pressure sensor is set to have a signal processing circuit capable of respectively with high precision detecting a pressure in a low pressure region before the stopper 18 is brought into contact with the pedestal and a pressure in a high pressure region after the stopper is brought into contact with the pedestal. Thereby, it is possible to provide a semiconductor pressure sensor at low cost and in a wide measurement range.

2. 发明专利

JP2004045408A Thermal air flowmeter 审中-公开
标题翻译：热空气流量计
公开(公告)号：JP2004045408A
公开(公告)日：2004-02-12
申请号：JP2003198836
申请日：2003-07-18
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： SUGAYA ATSUSHI , YAMADA MASAMICHI , NAKADA KEIICHI , WATANABE IZUMI , SONOBE HISAO
IPC分类号： G01F1/68 , F02D35/00 , F02D45/00 , G01F1/696
摘要： PROBLEM TO BE SOLVED: To solve the problem of a hot-wire type air flowmeter for measuring the intake air quantity of an internal combustion engine, wherein a heating resistor having a small heat capacity is required to be used in order to acquire excellent responsiveness, and on the contrary, if waterdrops, oil-drops or the like adhere to the heating resistor part, heating balance is lost and a heating temperature of the heating resistor is raised locally, to thereby deteriorate the resistor by the heat. SOLUTION: This thermal air flowmeter is provided with a means for detecting the heating state of the heating resistor and a circuit means for restricting a heating time according to the heating state, by discriminating the case where the waterdrops, the oil-drops or the like adhere to the heating resistor part from the ordinary non-adhering case. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题为了解决用于测量内燃机的进气量的热丝式空气流量计的问题，需要使用具有小的热容量的加热电阻器来获取优异的响应性，相反，如果水滴，油滴等粘附到加热电阻部分，则加热平衡失去，加热电阻器的加热温度局部升高，从而使电阻器发热。解决方案：该热空气流量计具有用于检测加热电阻器的加热状态的装置和用于根据加热状态限制加热时间的电路装置，通过区分水滴，油滴的情况或类似物从普通的非附着壳体附着到加热电阻器部分。版权所有（C）2004，JPO

3. 发明专利

JP2001091323A THERMAL AIR FLOW METER 失效
公开(公告)号：JP2001091323A
公开(公告)日：2001-04-06
申请号：JP27038599
申请日：1999-09-24
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： SUGAYA ATSUSHI , YAMADA MASAMICHI , NAKADA KEIICHI , WATANABE IZUMI , SONOBE HISAO
IPC分类号： G01P5/12 , F02D45/00 , G01F1/68 , G01F1/684 , G01F1/692 , G01F1/696 , G01F1/698 , G01F1/699
摘要： PROBLEM TO BE SOLVED: To prevent degradation of a resistor due to heat when water droplet, oil droplet, etc., adhere to the heat resistor, due to unbalance of heating and rise of heated temperature through it is necessary to use a heat resistor with a small heat capacity for good response in a heat wire air flow meter measuring suction air amount in an internal combustion engine. SOLUTION: A means for detecting the heated state of heat resistor by distinguishing between the case with adhesion of water droplet, oil droplet, etc., and the case without adhesion as usual and a circuit means regulating heating time by the heated state are provided.

4. 发明专利

JP2000304585A FLOW MEASUREMENT DEVICE 失效
公开(公告)号：JP2000304585A
公开(公告)日：2000-11-02
申请号：JP11594899
申请日：1999-04-23
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： KOMACHIYA MASAHIRO , SONOBE HISAO , ONIKAWA HIROSHI , WATANABE IZUMI
IPC分类号： G01F1/00 , F02D35/00 , G01F1/68 , G01F1/684 , G01F15/12 , G01P5/12
摘要： PROBLEM TO BE SOLVED: To effectively filter a pollutant by placing a change means for a flow direction functioning as inertia filter, which removes the pollutant disturbing measurement, at a flow control and then a flow detection part after the change means. SOLUTION: A change means for a flow direction comprises louvers 11 where vanes are spaced uniformly with an inclination of a definite angle, a guide 12 with an inclination of a definite angle to the louvers 11, and a removal outlet 13 removing the pollutant filtered by the guide 12. A part of air passed through an air cleaner 60, flows between the louvers 11 and guide 12. A flow of the air is changed a flow direction when passing through the louvers 11, and the pollutant in the fluid remains because the pollutant can not follow a change of the flow direction because of inertia thereof and is pushed away to the removal outlet 13. The pollutant is extracted out to an outside of the removal outlet 13 by differential pressure because of outside velocity faster than inside velocity, and then joins a main flow to be flowed to a down stream from a flow detection part 20. The flow detection part 20 is not exposed to the pollutant because a flow in the flow detection part 20 is a clean flow passed through the louvers 11.

5. 发明专利

JPH10300615A SELF-DIAGNOTIC METHOD FOR SEMICONDUCTOR PRESSURE SENSOR 失效
公开(公告)号：JPH10300615A
公开(公告)日：1998-11-13
申请号：JP10859097
申请日：1997-04-25
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： SUZUKI KIYOMITSU , SATO SHINYA , MIKI MASAYUKI , SONOBE HISAO , MIYAZAKI ATSUSHI , KUBOTA MASANORI , YAMAGUCHI SHINICHI , SASADA YOSHIYUKI
IPC分类号： G01L9/04 , G01L9/00 , G01L27/00
摘要： PROBLEM TO BE SOLVED: To realize on-line self-diagnosis for all failure modes by an arrangement wherein a microcomputer in a system using a semiconductor pressure sensor processes two output signals for amplifying and regulating the pressures prevailing before and after a stopper touches a base. SOLUTION: In the case of an engine control system for automobile, many sensors including a flow sensor 27 and a temperature sensor 28 are used in addition to a semiconductor pressure sensor 26. Signals from these sensors are processed in order to control actuators such as an injector 30 and an igniter 31 by a microcomputer 29. The semiconductor pressure sensor 26 has a function for producing output signals Vx, Vy of different form for the pressure to be measured by a signal processing circuit. Initial values of the output signals Vx, Vy are stored in the memory of the microcomputer 29 at the time of manufacture and adjustment of the semiconductor pressure sensor 26 or after it is built in the system and then the output signals Vx, Vy therefrom are processed.

6. 发明授权

KR850001098B1 비등냉각장치 失效
公开(公告)号：KR850001098B1
公开(公告)日：1985-07-27
申请号：KR810002917
申请日：1981-08-11
申请人： HITACHI LTD
发明人： OKADA SADAYUKI , SONOBE HISAO
IPC分类号： H01L23/36 , F28D15/02 , H01L23/40 , H01L23/42 , H01L23/427

7. 发明授权

KR840000952B1 정압형 비등 냉각장치 失效
公开(公告)号：KR840000952B1
公开(公告)日：1984-07-01
申请号：KR800000656
申请日：1980-02-19
申请人： HITACHI LTD
发明人： OKADA SADAYUKI , SONOBE HISAO
IPC分类号： F25B43/00

8. 发明授权

US3614564A Readhesion apparatus for vehicles 失效
标题翻译：车辆阅读器
公开(公告)号：US3614564A
公开(公告)日：1971-10-19
申请号：US3614564D
申请日：1968-07-22
申请人： HITACHI LTD
发明人： HIROTSU TETSUJI , SONOBE HISAO
IPC分类号： B60L3/10 , B60T8/66 , B61C15/12 , H02P5/50
CPC分类号： B60L3/10 , B60L2200/26
摘要： A readhesion apparatus for vehicles for detecting an increment of velocity resulting from a slip caused to a vehicle wheel adapted to make the output of a driving motor follow a reference value, applying the detected value to a transducer which exhibits different time constants when input variation is increasing and when it is decreasing, and reducing the reference value in accordance with an output from said transducer, whereby readhesion of the wheel is enhanced.

9. 发明授权

US3608981A Re-adhesion apparatus for vehicles 失效
标题翻译：车辆用再粘接装置
公开(公告)号：US3608981A
公开(公告)日：1971-09-28
申请号：US3608981D
申请日：1969-03-18
申请人： HITACHI LTD
发明人： YUI SHIGETOMO , HIROTSU TETSUJI , SONOBE HISAO
IPC分类号： B60L3/10 , B60T8/32 , B60T8/08
CPC分类号： B60L3/10 , B60L2200/26 , B60T8/3235
摘要： A re-adhesion apparatus for vehicles, including means adapted to detect together a change in the velocity of a nonadhesion axle with respect to the velocity of an adhesion axle and a differential of such change whereby nonadhesion phenomena in a vehicle can very early be detected in accordance with an output which is obtained when the detected values exceed preset levels.

10. 发明专利

DE2642160A1 未知
公开(公告)号：DE2642160A1
公开(公告)日：1977-03-31
申请号：DE2642160
申请日：1976-09-20
申请人： HITACHI LTD
发明人： SONOBE HISAO , OKADA SADAYUKI , OE ETSUO , TSUKIOKA HIDEO , SATO MORIICHI
IPC分类号： C09K5/04 , F25B23/00 , F25D9/00 , G12B15/02 , F25D3/00
摘要： An apparatus for cooling a heat generating member by utilizing the latent heat of vaporization of a boiling refrigerant, having a cooling vessel including an evaporator section containing the boiling refrigerant and adapted to transmit the heat generated by the heat generating member to the refrigerant, and a condenser section for liquefying the gasified refrigerant; a liquid refrigerant reservoir open at its upper end and adapted to store a body of the refrigerant which does not directly take part in a cooling operation while the cooling operation is being performed; and a communication means for communicating the cooling vessel with the liquid refrigerant reservoir, the cooling vessel and the communication means being filled with the boiling refrigerant.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式