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91. 发明专利

JPS6082955A AIR-FUEL RATIO SENSOR OF ENGINE 失效
公开(公告)号：JPS6082955A
公开(公告)日：1985-05-11
申请号：JP19288983
申请日：1983-10-14
申请人： MITSUBISHI ELECTRIC CORP
发明人： KOMINAMI MASAYA , ASAYAMA YOSHIAKI
IPC分类号： G01N27/419 , F02B1/04 , F02D41/00 , F02D41/14 , G01N27/409 , G01N27/417
摘要： PURPOSE:To detect exactly the entire region of an air-fuel ratio and theoretical air-fuel ratio by disposing an oxygen pump and an oxygen sensor to face each other apart at a slight space and changing over suitably the electrode polarities thereof. CONSTITUTION:A solid electrolyte oxygen pump 6 and a solid electrolyte oxygen sensor 10 are disposed to face each other at a slight space (d) of about 0.1mm. in an exhaust pipe 1. The electromotive force (e) generated between the electrodes 8, 9 of the sensor 10 is impressed via a polarity change-over switch SW and a resistor R1 to the inversion input terminal of an effect amplifier A and a transistor TR is driven by the output proportional to a difference from the reference voltage VRef impressed to the non-inversion input terminal, by which the pump current IP flowing between the electrodes 4 and 5 of the pump 6 is controlled. The electromotive force of the sensor 10 is controlled to about 200mV by the above-mentioned constitution, by which the change in the pump current IP of the pump 6 is detected and the exact detection of the theoretical air-fuel ratio and the entire region of the air-fuel ratio is made possible.

92. 发明专利

JPS6039548A AIR-FUEL RATIO SENSOR OF ENGINE 失效
公开(公告)号：JPS6039548A
公开(公告)日：1985-03-01
申请号：JP14763083
申请日：1983-08-12
申请人： NGK SPARK PLUG CO , MITSUBISHI ELECTRIC CORP
发明人： YAMADA TETSUMASA , ASAYAMA YOSHIAKI , KOMINAMI MASAYA
IPC分类号： G01N27/419 , F02D41/14 , G01N27/409 , G01N27/417
摘要： PURPOSE:To detect air-fuel ratio extending over wide range by detecting a pump current of an oxygen pump in a sparse fuel area, and detecting an electromotive force of an oxygen sensor in a dense fuel area. CONSTITUTION:An oxygen pump 6 constituted by providing platinum electrodes 4 and 5 on both side faces of a plate-like ion conductive solid state electrolyte 3, and an oxygen sensor 10 constituted in the same way as this oxygen pump are opposed and placed through a minute gap (d), in an exhaust pipe 1 of an engine. An electromotive force of the oxygen sensor 10 is applied to an inverted input of an operational amplifier A through a resistance R1, drives a transistor TR by an output of the operational amplifier A being proportional to a difference to a reference voltage VR, and controls a pump current IP of the oxygen pump 6. A limiting current is provided on this pump current IP, and the reference voltage VR is set to a prescribed voltage, by which a sparse fuel area and a dense fuel area are detected by detecting the pump current IP and detecting the electromotive force of the oxygen sensor 10, respectively.

93. 发明专利

JPS6024445A AIR-FUEL RATIO DETECTOR 失效
公开(公告)号：JPS6024445A
公开(公告)日：1985-02-07
申请号：JP13247683
申请日：1983-07-20
申请人： TOYOTA MOTOR CO LTD
发明人： SAKURAI SHIGENORI , KAMO TAKASHI , IGAI TADAYOSHI
IPC分类号： G01N27/41 , F02D35/00 , F02D41/14 , G01M15/00 , G01N27/409 , G01N27/416 , G01N27/417
摘要： PURPOSE:To detect an air-fuel ratio from a rich region to a lean region by one detector, by increasing the oxygen content of gas to be inspected by using an oxygen pump while measuring the increased oxygen content by a lean sensor. CONSTITUTION:An air-fuel ratio detector contains a ceramic cylinder 1, a gas diffusion orifice 2, a disc shaped solid electrolyte and electrodes 4a, 4b, 5a, 5b and connected to a DC power source 7 through the electrodes 4a, 5a and a lead wire 6a to constitute an oxygen pump while connected to a DC constant voltage power source 8 and a current measuring apparatus 9 through the electrodes 4b, 5b and a lead wire 6b to constitute a lean sensor. Because a constant amount of oxygen flows from the electrode 5a in the open air side to the electrode 4a to be always flowed into gas to be inspected introduced into the detector from the diffusion orifice 2, the gas to be inspected is brought to a lean state. Because the gas to be inspected comes to a lean state even if said gas is a rich state, the air-fuel ratio of the gas in the space between the diffusion orifice 2 and the solid electrolyte 3 is detected by the lean sensor, that is, by one detector.

94. 发明专利

JPS601336A ENGINE AIR-FUEL RATIO CONTROL DEVICE 失效
公开(公告)号：JPS601336A
公开(公告)日：1985-01-07
申请号：JP10964683
申请日：1983-06-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： ASAYAMA YOSHIAKI , KOMINAMI MASAYA
IPC分类号： G01N27/419 , F02D41/00 , F02D41/04 , F02D41/14 , F02D41/34 , G01N27/409 , G01N27/417 , G01N27/46 , G01N27/58
摘要： PURPOSE:To make it possible to carry out the feed-back control of engine operating air-fuel ratio at an arbitrary air-fuel ratio, by providing such an arrangement that a chemical equivalent point of exhaust gas in a closed hollow chamber provided with a diffusion pore for introducing exhaust gas to be measured, is detected under the supply of oxygen. CONSTITUTION:In an air-fuel ratio detecting device 8 disposed in an exhaust pipe 7, there is provided a solid electrolyte oxygen pump body 11 made of sintered zirconia and formed in a bottomed cylinder shape, platinum electrodes 12, 13 being attached to both inner and outer surfaces of the body 11. Further, there is provided a solid electrolyte oxygen concentration detector body 15 made of the same material and formed in the same shape, platinum electrodes 12, 13 being attached to both inner and outer surfaces of the body 15. The electrodes 13, 17 are disposed in a closed hollow chamber B defined by the bodies 11, 17 and partition walls 19, 20, and exhaust gas is introduced into the above-mentioned chamber B through a diffusion pore 21 formed in the partition wall 20. Further, an arrangement is provided such that electromotive forces which correspond respectively to the oxygen concentrations in the chamber B and in the body 15 may be generated, and the outputs thereof are utilized for the control of air- fuel ratio.

95. 发明专利

JPS59192955A Air fuel ratio sensor 失效
标题翻译：空气燃料比传感器
公开(公告)号：JPS59192955A
公开(公告)日：1984-11-01
申请号：JP4309784
申请日：1984-03-06
申请人： Mitsubishi Electric Corp , Ngk Spark Plug Co Ltd
发明人： ASAYAMA YOSHIAKI , KOMINAMI MASAYA
IPC分类号： G01N27/419 , F02D33/00 , F02D41/14 , G01N27/409 , G01N27/417
CPC分类号： G01N27/417
摘要： PURPOSE:To obtain a titled inexpensive sensor superior in practicality and capable of also measuring air fuel ratios at the rich and lean sides by providing oppositely an oxygen pump and an oxygen concn. cell at both sides of a space chamber, and providing an air chamber communicating with the atmosphere at the side surface of the air chamber. CONSTITUTION:A zirconium oxide plate is cut out and the cut plates are connected to each other, the oxygen pump is formed by solid-state electrolyte plates 11a, 12a, and the oxygen concn. cell is formed by solid-state electrolyte plates 11b, 12b at both sides of the space chamber B having a diffusing small hole 14. If a measuring gas is introduced from the hole 14, a voltage is generated between electrodes 16a, 16b according to the oxygen concn.s in the air chambers A' and B, and the air fuel ratio is measured. If a voltage is impressed between electrodes 15a, 15b at the time, the oxygen in a reference air chamber A is moved to the chamber B. Since the moved quantity can be controlled freely, the air fuel ratios at the rich and lean sides are measured arbitrarily and the inexpensive sensor superior in practicality can be obtained.
摘要翻译：目的：为了获得实用性优异的标价便宜的传感器，并且能够通过相对地提供氧气泵和氧气浓度来测量富铁两侧的空燃比。并且在空气室的侧表面处提供与大气连通的空气室。构成：切割出氧化锆板，将切割板彼此连接，氧气泵由固态电解质板11a，12a形成，氧浓缩。电池由具有扩散小孔14的空间室B两侧的固态电解质板11b，12b形成。如果从孔14引入测量气体，则根据电极16a，16b产生电压空气室A'和B中的氧浓度，并且测量空燃比。此时，如果在电极15a，15b之间施加电压，则将参考空气室A中的氧气移动到室B.由于可以自由地控制移动量，因此测量富面和贫边的空燃比可以任意地获得实用性优异的廉价传感器。

96. 发明专利

JPS59168357A Detection of deterioration of solid electrolytic oxygen sensor 失效
标题翻译：检测固体电解氧传感器的检测
公开(公告)号：JPS59168357A
公开(公告)日：1984-09-22
申请号：JP4282683
申请日：1983-03-15
申请人： Fujikura Ltd
发明人： NAKAZAWA MITSUHIRO , OSANAI YUTAKA , ISONO YOSHIYA , ASADA AKIYOSHI , FUKUDA AKIRA
IPC分类号： G01N27/41 , G01N27/26 , G01N27/417
CPC分类号： G01N27/4175
摘要： PURPOSE:To facilitate checking of deterioration of whole oxygen sensor, by inflicting a predetermined treatment to a voltage wove form at the time of measurement of oxygen concentration. CONSTITUTION:A constant current electric power source 63 introduces a constant current to an oxygen sensor 64 through a controller 62 by a measurement starting signal 61 from outside and a time counter 69 counts clock pulses delivered from a clock 70 and thus, a pumping time T1 is measured. A filter 65 differentiates a potential difference between electrodes of the oxygen sensor. Its wave-height value signal is compared with a reference voltage by a comparator member 66 and it the wave-height value signal is smaller than the reference voltage, than, the situation is judged to represent an obnormal deterioration and a display warning the abuormality is to beseen on an emergency display member 67 and thus, the deterioration check to the whole oxygen sensor can easily be executed.
摘要翻译：目的：为了便于检测氧传感器的劣化，通过在测量氧气浓度时对电压方式进行预定处理。构成：恒流电源63通过控制器62通过来自外部的测量开始信号61向氧传感器64引入恒定电流，并且时间计数器69计数从时钟70传送的时钟脉冲，并且因此计算泵送时间T1 被测量。滤波器65区分氧传感器的电极之间的电位差。其波高值信号通过比较器构件66与参考电压进行比较，并且其波高值信号小于参考电压，而不是判断该情况表示不正常的劣化，并且显示警告信号是在紧急显示部件67上观察，因此能够容易地执行对整个氧传感器的劣化检查。

97. 发明专利

JPS59166856A Production of oxygen sensor 失效
标题翻译：生产氧传感器
公开(公告)号：JPS59166856A
公开(公告)日：1984-09-20
申请号：JP19747782
申请日：1982-11-12
申请人： Hitachi Ltd
发明人： IWAMURA RIYOUJI , FUJITA TAKESHI , MUROOKA HIDEYASU , MURAKAMI HIROYA , HARADA KOUJI
IPC分类号： G01N27/409 , G01N27/417
CPC分类号： G01N27/417
摘要： PURPOSE:To improve accuracy and to enable mass production by forming three green sheets for a pump cell and sensor cell formed with electrodes sandwiching a reference oxygen chamber green sheet as the center, and a reference oxygen chamber punched with plural holes, calcining after thermopressing. CONSTITUTION:An org. binder is added to the powder of a solid electrolyte and plate-shaped green sheet is formed and is cut to a desired size. A pump cell side electrode 2 is formed on the green sheet to manufacuture a green sheet 5 for a pump cell and a sensor cell side electrode 3 is formed thereon to manufacture a green sheet 6 for a sensor cell, respectively. Plural holes 8' are further punched therein to form a green sheet 7' for a reference oxygen chamber. The sheets 5, 6 and 7' are superposed in a way as to sandwich the sheet 7' between the two sheets and the laminated sheets are subjected to thermocompression bonding and calcining to make the green sheet air-impermeable and to make the holes 8 airtight. The sheets 5, 6 are then airtightly held without deformation and therfore the oxygen chamber having high accuracy without change in the volume of the reference oxygen chamber and without variance is manufactured.
摘要翻译：目的：为了提高精度，并通过为泵电池形成三个生片和以参考氧气生坯片为中心形成的电极形成的三个生片和通过多孔冲压的参比氧气室进行批量生产，在热压后进行煅烧。构成：组织将粘合剂添加到固体电解质的粉末中，并且形成板状生片，并将其切割成所需的尺寸。在生片上形成泵单元侧电极2，以制造用于泵电池的生片5，并且在其上形成传感器单元侧电极3，以分别制造用于传感器单元的生片6。在其中进一步打孔多个孔8'以形成用于参考氧气室的生坯7'。片材5,6和7'以将片材7'夹在两片之间的方式重叠，层压片材进行热压接和煅烧，以使生片不透气，并使孔8气密。然后片材5,6被气密地保持而不变形，因此制造具有高精度的氧气室，而不改变参考氧气室的体积并且没有变化。

98. 发明专利

JPS5930054A Inspection of solid electrolytic oxygen sensor 失效
标题翻译：检测固体电解氧传感器
公开(公告)号：JPS5930054A
公开(公告)日：1984-02-17
申请号：JP14007282
申请日：1982-08-12
申请人： Fujikura Ltd
发明人： NAKAZAWA MITSUHIRO , OSANAI YUTAKA , ISONO YOSHIYA , FUKUDA AKIRA
IPC分类号： G01N27/26 , G01N27/409 , G01N27/41 , G01N27/417
CPC分类号： G01N27/4175
摘要： PURPOSE:To enable an easy evaluation of the airtightness at the sealed section of a solid electrolytic oxygen sensor by measuring electric characteristic in the transient period of the sensor to determine a difference between the electric characteristic and that in the transient period of a standard sensor. CONSTITUTION:A solid electrolytic oxygen sensor 1 is set in a gas G to be measured while a standard voltage variation is inputted into a comparator circuit 4b. Then, when current flows through an oxygen ion conduction plate 1a of the solid electrolytic oxygen sensor 1, pumping is started while a voltage between two electrodes 1b and 1b is outputted to an arithmetic circuit 4a to compute a voltage variation. In case the solid electrolytic oxygen sensor 1 is defective, impairing the airthightness of the sealed part between the oxygen ion conduction plate 1a and a cover 2, excess oxygen is diffused into an isolation chamber C from the sealed part. Thus, the voltage variation of the solid electrolytic oxygen sensor 1 shows a dull change from the rising thereof (the transient period B1) as indicated by the voltage change curve B as illustrated. The voltage variation is compared with the standard voltage variation and a deficiency signal is outputted from the comparator circuit 4b while the deficiency is indicated on a display 4c.
摘要翻译：目的：通过测量传感器过渡期间的电气特性，确定电气特性与标准传感器瞬态过程中的电特性之间的差异，便于对固体电解氧传感器密封部分的气密性进行评估。构成：将固体电解氧传感器1设定在要测量的气体G中，同时将标准电压变化输入到比较器电路4b中。然后，当电流流过固体电解氧传感器1的氧离子传导板1a时，在将两个电极1b和1b之间的电压输出到运算电路4a以计算电压变化的同时开始泵浦。在固体电解氧传感器1有缺陷的情况下，损害氧离子传导板1a和盖2之间的密封部分的气密性，过量的氧从密封部分扩散到隔离室C中。因此，固体电解氧传感器1的电压变化显示出如图所示的电压变化曲线B所示的从上升（瞬态时段B1）的钝化变化。将电压变化与标准电压变化进行比较，并且在显示器4c上指示缺陷时，从比较器电路4b输出缺陷信号。

99. 发明专利

JPS58166253A DEVICE FOR MEASURING CONCENTRATION OF COMPONENT 失效
公开(公告)号：JPS58166253A
公开(公告)日：1983-10-01
申请号：JP4927082
申请日：1982-03-26
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： MAEDA MASATO
IPC分类号： G01N27/409 , G01N27/417
摘要： PURPOSE:To enable simultaneous measurement of dry base oxygen concn., wet base oxygen concn., and moisture concn., by introducing the not dehumidified gas to be measured into the first partition tube and the dehumidified gas to be measured into the second partition tube. CONSTITUTION:A measuring device has test tube type zirconia tubes 11, 12 forming the first and the second partition walls, and electrodes 13-16. The tubes 11, 12 are arranged in a pipe 2, with their tops opposite to each other. They are maintained at the same constant temp. in a thermostat comprising a heater, etc. The dehumidified and not dehumidified gases to be measured are introduced into the first and second partition wall tubes 11, 12, respectively, and measurements of dry base and wet base oxygen concns. and moisture concn. are executed by such a constitution.

100. 发明专利

JPS58162858A OXYGEN CONCENTRATION DETECTOR 失效
公开(公告)号：JPS58162858A
公开(公告)日：1983-09-27
申请号：JP4655782
申请日：1982-03-23
申请人： HITACHI LTD
发明人： OOYAMA TAKASHIGE , KIRISAWA TADASHI , OOSUGA MINORU
IPC分类号： G01N27/41 , G01N27/417
摘要： PURPOSE:To prevent mismeasurement even when dust, etc. attach to a diffusion- resistant material, by temporarily introducing a reference oxygen sample into the measurement side of an oxygen pump type oxygen detector and correcting the output signal at measuring operation in accordance with the output signal at that time. CONSTITUTION:A detector 3 consisting of a solid electrolyte 31 is installed in a part of a gas discharging pipe 2. A cover 34 having orifices 35a, 35b are installed around the electrolyte 31 as diffusion-resistant materials, and further on the circumference of this cover 34, a dust protection 37 having orifices 39a, 39b is also installed. A pipe 41 and a solenoid valve 42 are provided in a chamber surrounded with the protection 37 and the cover 34, to make the chamber connectible with the open air. During suspension of a combustor 1, at its start, the valve 42 is opened to introduce the air into the chamber 40, and current of the detector 3 is measured at that time to store the measured value in a storage device 51. Then, the valve 42 is closed, and an oxygen concn. in the waste gas is measured by correcting the detector 3 in accordance with said stored signal.

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