专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明专利

JPH0237110B2 失效
公开(公告)号：JPH0237110B2
公开(公告)日：1990-08-22
申请号：JP13626182
申请日：1982-08-06
申请人： HITACHI LTD
发明人： SASAYAMA TAKAO
IPC分类号： H01L29/78 , H01L21/331 , H01L21/8249 , H01L27/04 , H01L27/06 , H01L29/68 , H01L29/72 , H01L29/73 , H03K17/567

82. 发明专利

JPS6353366B2 失效
公开(公告)号：JPS6353366B2
公开(公告)日：1988-10-24
申请号：JP5370883
申请日：1983-03-31
申请人： HITACHI LTD
发明人： AMANO MATSUO , SAKAMOTO SHINICHI , HIRAYAMA TAKESHI , SASAYAMA TAKAO
IPC分类号： F02D41/34 , F02D41/02 , F02D41/04 , F02D41/08 , F02D41/14 , F02D41/24

83. 发明专利

JPS63172954A CONSTANT ELECTROMOTIVE FORCE CONTROL TYPE AIR-FUEL RATIO SENSOR 失效
公开(公告)号：JPS63172954A
公开(公告)日：1988-07-16
申请号：JP316687
申请日：1987-01-12
申请人： HITACHI LTD
发明人： MIKI MASAYUKI , SUZUKI KIYOMITSU , SASAYAMA TAKAO , KAYANO MITSUO
IPC分类号： G01N27/419 , G01N27/409
摘要： PURPOSE:To eliminate the influence occurring in clogging, etc., of a detection part of an air-fuel ratio sensor by sticking of carbon, etc., in an exhaust gas thereto by providing a gas diffusing means constituted by enclosing one electrode to an atmosphere side. CONSTITUTION:A zirconia solid electroltye 1 is installed on the boundary between the atmosphere side and exhaust gas side. A platinum electrode Ee is mounted to the surface thereof facing the exhaust gas side and a platinum electrode Ea to the surface facing the atmosphere side. The platinum electrode Ea on the atmosphere side is further enclosed by the gas diffusing means 2. The measurement values required to be detected by this device are the oxygen partial pressure Pa in the atmosphere, the oxygen partial pressure Pe in the exhaust gas and the oxygen partial pressure Pd in the gas diffusing means. Direct contact of the gas diffusing means 2 with the exhaust gas is obviated and the sensor is protected against the clogging and staining by the carbon, silica, etc.

84. 发明专利

JPS62129722A CONTROLLING DEVICE OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS62129722A
公开(公告)日：1987-06-12
申请号：JP22883186
申请日：1986-09-26
申请人： HITACHI LTD
发明人： OOYAMA TAKASHIGE , YAMAUCHI TERUO , FUJIEDA MAMORU , NISHIMURA YUTAKA , SASAYAMA TAKAO , SAKAMOTO SHINICHI , MORIYA HISATOKU , ATAGO TAKESHI , SATO KANEMASA , HOSHI KIICHI , UENO SADAYASU , OTANI TADAHIKO , KASHIWATANI MINEO
IPC分类号： G01F1/68 , F02D45/00 , G01F1/698 , G01F15/12
摘要： PURPOSE:To provide maintenance of air flow rate accurately for a long period of time for engine fuel control, by heating a supplied electric current to a heating wire probe for a specified length of time for raising its temperature and burning dust on the surface. CONSTITUTION:Resistances connected in series to a heat-sensitive resistor 802 of a heating wire probe are divided into RS1 and RS2 and difference of a terminal voltage of RS2 and voltage VR is detected by a differential amplifier 1001. A timer circuit 1006 driven by a current transmitted through a starter switch 1018 for supplying a voltage of a battery 800 to a starter 1016 gives a signal of the specified time to an AND gate 1005 after the switch 1018 is placed in 'ON' position. When fluctuation of current values due to contamination of a heat-sensitive resistor is observed, a switch 1007 short-circuits the RS1 for a constant length of time based upon an output of an output of the gate 1005, and a heavy current is supplied to the resistor 802 and the surface temperature is raised to burn the dusts.

85. 发明专利

JPS624544B2 失效
公开(公告)号：JPS624544B2
公开(公告)日：1987-01-30
申请号：JP4437879
申请日：1979-04-13
申请人： HITACHI LTD
发明人： NISHIMURA YUTAKA , OOYAMA TAKASHIGE , SASAYAMA TAKAO
IPC分类号： F02D41/34 , F02D35/00 , F02D41/18 , F02D45/00 , F02M69/48 , G01F1/68 , G01F1/684

86. 发明专利

JPS61180131A AIR FUEL RATIO SENSOR FOR AUTOMOBILE 失效
公开(公告)号：JPS61180131A
公开(公告)日：1986-08-12
申请号：JP1998285
申请日：1985-02-06
申请人： HITACHI LTD
发明人： SUZUKI KIYOMITSU , SASAYAMA TAKAO , MIKI MASAYUKI
IPC分类号： G01N27/41 , G01N27/27 , G01N27/406 , G01N27/409 , G01N27/416
摘要： PURPOSE:To detect air fuel ratios in three states of a rich range, an idel air fuel ratio, and a lean range with high precision through simple constitution by setting the potential of the 2nd electrode higher than the ground level of a driving circuit. CONSTITUTION:The potential of the 2nd electrode 23 is VR lower than the potential of the 1st potential 22 in the lean range, so the oxygen of the electrode 23 is converted to oxygen ions because of the voltage VR and it is transported to the electrode 22 through a zirconia solid electrolyte 20. It is oxidized again here and radiated in the atmosphere. At this time, a positive pump current IP flows in a circuit to vary an output voltage EO. Further, such a current value IP that IP>0 corresponds to the amount of oxygen which flows in through a diffusion resistance 24 from an exhaust gas atmosphere through the diffusion to an electrode 23. Further, the amounts of remaining oxygen in exhaust gas and remaining unburnt gas such as carbon dioxide which flow to the electrode 23 are chemical equivalents and the both are burnt completely through the catalyzation of the electrode 23. Therefore, the oxygen ion is eliminated,.

87. 发明专利

JPS6048518A HEATER TEMPERATURE CONTROL CIRCUIT FOR AIR FUEL RATIO SENSOR 失效
公开(公告)号：JPS6048518A
公开(公告)日：1985-03-16
申请号：JP15420683
申请日：1983-08-25
申请人： HITACHI LTD
发明人： MIKI MASAYUKI , SAKAMOTO SHINICHI , SUZUKI KIYOMITSU , SASAYAMA TAKAO , SUZUKI TOSHITAKA , SATOU NOBUO
IPC分类号： G01N27/41 , G05D23/19 , G05D23/24
摘要： PURPOSE:To prevent the generation of a rush current by raising a reference voltage according to a prescribed time constant when a power source is turned on. CONSTITUTION:A heater 4 and resistance 11-13 form a bridge circuit, and a power transistor (TR) 10 is controlled with the output of a differential amplifier 14 to control the heater 4 to fixed temperature. In this case, resistances 17-19, a capacitor 20, and a diode 21 are provided centering on a TR16 for control, and the rush current in power-on operation, etc., is suppressed. When a voltage is applied to a power source terminal 15, the capacitor 20 begins to be charged with a time constant tau determined by a resistance 19, and the base voltage of the TR16 varies following up it. This variation is transmitted to a differential amplifier 14, whose reference voltage is raised according to the time constant tau. Consequently, the current flowing to the heater 4 through the TR10 also increases from zero after the power-on operation according to the time constant tau.

88. 发明专利

JPS59184819A Semiconductor pressure sensor 失效
标题翻译：半导体压力传感器
公开(公告)号：JPS59184819A
公开(公告)日：1984-10-20
申请号：JP5930783
申请日：1983-04-06
申请人： Hitachi Ltd
发明人： YAMADA KAZUJI , SATOU HIDEO , KAWAKAMI KANJI , KATOU KAZUO , SASAYAMA TAKAO
IPC分类号： G01R27/02 , G01B7/16 , G01D3/028 , G01L1/22 , G01L9/00 , G01L9/04 , G01L9/06 , G01L19/04
CPC分类号： G01L1/2281 , G01L9/065
摘要： PURPOSE:To obtain an exact output by executing not only a compensation of a temperature variation of sensitivity of a gauge resistance but also a compensation of a temperature variation of an amplification degree of an amplifying circuit. CONSTITUTION:A semiconductor pressure sensor amplifies outputs V1-V2 of a Wheatstone bridge constituted of gauge resistances G1-G4, by an operational amplifier OP2, and outputs voltage V0. The sensitivity of the bridge is varied as shown by a curve 9 with temperature, therefore, a current source Ib has a characteristic as shown by a curve 10, and compensates a temperature variation of the sensitivity. On the other hand, in order to compensate an amplification degree variation by a temperature variation of the gauge resistances G1-G4, a gauge resistance G5 is used, and supply voltage V4 to the bridge is varied as shown by a curve 11. In this way, even if a temperature variation is generated, the output voltage V0 shows an exact pressure.
摘要翻译：目的：通过不仅对表面电阻的灵敏度的温度变化进行补偿，而且通过执行放大电路的放大度的温度变化的补偿来获得精确的输出。构成：半导体压力传感器通过运算放大器OP2放大由电阻G1-G4构成的惠斯通电桥的输出V1-V2，并输出电压V0。如图9所示，桥的灵敏度随温度变化，因此，电流源Ib具有如曲线10所示的特性，并补偿灵敏度的温度变化。另一方面，为了通过表面电阻G1-G4的温度变化来补偿放大率的变化，使用表阻值G5，并且如曲线11所示，变化到桥的电源电压V4。在此即使产生温度变化，输出电压V0也显示精确的压力。

89. 发明专利

JPS5931404A Pressure sensor circuit 失效
标题翻译：压力传感器电路
公开(公告)号：JPS5931404A
公开(公告)日：1984-02-20
申请号：JP14106782
申请日：1982-08-16
申请人： Hitachi Ltd
发明人： YAMADA KAZUJI , SATOU HIDEO , KATOU KAZUO , KAWAKAMI HIROJI , KANZAWA RIYOUSAKU , SASAYAMA TAKAO
IPC分类号： G01L9/04 , G01B7/16 , G01L9/00 , G01L9/06 , G01D3/04
CPC分类号： G01L9/0054 , G01L9/065 , Y10S323/907
摘要： PURPOSE:To perform precise temperature compensation regardless of the fluctuation of a source voltage, by using a constant current souce proportional to the absolute temperature, a constant current souce immue from the influence of temperature, and a constant current source proportional to the temperature characteristic of a gauge resistance. CONSTITUTION:The circuit consisting of transistors (TR) Q1 and Q2, resistances R3 and R4 whose temperature coefficients are nearly zero, and a constant current source 19 is used frequently as a constant current souce in general in the form of an integrated circuit. This circuit supplies a current IT proportional to absolute temperature T and a current IC which does not depend upon the temperature. The circuit consisting of a TRQ3, constant current source 20, amplifier 21, resistance R5 which is almost under no influence of temperature, and resistance R6 whose is nearly equal to a diffused resistance constituting a bridge 22 generates a constant current IR (SINK) nearly equal to the temperature coefficient of the gauge resistance. Then, a current IT+IC-IR is supplied to the bridge 22 by those circuits.
摘要翻译：目的：通过使用与绝对温度成比例的恒定电流来执行精确的温度补偿，无论电源电压是否波动，恒温电流均来自温度的影响，恒定电流源与温度特性成正比表阻。构成：通常以集成电路的形式，将晶体管（TR）Q1和Q2，温度系数接近零的电阻R3和R4以及恒定电流源19频繁地用作恒定电流源的电路。该电路提供与绝对温度T成比例的电流IT和不依赖于温度的电流IC。由TRQ3，恒流源20，放大器21，几乎不受温度影响的电阻R5和几乎等于构成桥22的扩散电阻的电阻R6组成的电路产生近似于恒定电流IR（SINK）等于表面电阻的温度系数。然后，这些电路向桥接器22提供电流IT + IC-IR。

90. 发明专利

JPS5918447A Practical mounting structure of lean sensor 失效
标题翻译： LEAN传感器实际安装结构
公开(公告)号：JPS5918447A
公开(公告)日：1984-01-30
申请号：JP12771182
申请日：1982-07-23
申请人： Hitachi Ltd
发明人： SUZUKI KIYOMITSU , MIKI MASAYUKI , SASAYAMA TAKAO , ISHIHARA NOBORU , HARADA KOUJI
IPC分类号： G01N27/41 , G01N27/407 , G01N27/409
CPC分类号： G01N27/407
摘要： PURPOSE:To eliminate the irregularity in sensitivity and to enhance durability, by a method wherein mutual solid electrolyte materials or this electrolyte material and ceramic having coefficient of heat expansion same to that of the aforementioned material are fixedly bonded by interposing amorphous material therebetween as an insert member. CONSTITUTION:In forming an oxygen reference chamber by fixedly adhering an oxygen ion conductive solid electrolyte material 5 having platinum electrodes 6, 7 formed to both surfaces thereof to a cover member 1, an insert member 4 comprising an amorphouse material is inserted between the cover member 1 and the electrolyte material 5 to be fixedly bonded thereto under heating and pressure. The above mentioned insert member 4 comprises a Pt-Si type amorphous material and has a shape of a foil with a thickness of about several mum while the compositional ratio of Pt and Si is selected so as to make the m.p. of the insert material lower than that of the electrolyte material 5 and to make the coefficient of heat expansion almost equal to that of said electrolyte material 5. Heat and pressure bonding at a low temp. is enabled and a mechanically strong bonding layer 8 high in air tightness can be formed.
摘要翻译：目的：为了消除灵敏度的不均匀性和提高耐久性，通过将相互固体电解质材料或具有与上述材料相同的热膨胀系数的电解质材料和陶瓷固定地粘结在其间的非晶材料作为插入物的方法会员。构成：通过将形成在其两个表面上的具有铂电极6,7的氧离子导电固体电解质材料5固定地粘附到盖构件1上来形成氧参考室，将包括一个顶棚材料的插入构件4插入到盖构件 1和电解质材料5在加热和加压下固定在其上。上述插入构件4包括Pt-Si型无定形材料，并且具有厚度约几μm的箔的形状，同时选择Pt和Si的组成比，使得m.p。的插入材料低于电解质材料5，并且使热膨胀系数几乎等于所述电解质材料5的热膨胀系数。并且可以形成高气密性的机械强度粘合层8。

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