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

JP2006125226A Method for diagnosing deterioration of three-way catalyst and exhaust gas purification device 有权
标题翻译：用于诊断三维催化剂和排气净化装置的检测方法
公开(公告)号：JP2006125226A
公开(公告)日：2006-05-18
申请号：JP2004311489
申请日：2004-10-26
申请人： National Traffic Safety & Environment Laboratory , Ngk Insulators Ltd , 日本碍子株式会社 , 独立行政法人交通安全環境研究所
发明人： YAMAMOTO TOSHIRO , SASAKI YUICHI , MIYASHITA TAKEYA
IPC分类号： F01N3/20 , B01D53/94 , F01N3/24 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To provide a method for diagnosing deterioration of a three-way catalyst capable of accurately performing deterioration diagnosis of the three-way catalyst under a wide range of operation condition including acceleration operation zone. SOLUTION: This method for diagnosing deterioration of the three-way catalyst is provided with a detector 3 capable of continuously measuring concentration of nitrogen oxide contained in combustion exhaust gas and/or air-fuel ratio of combustion exhaust gas in an upstream side and a downstream side of the three-way catalyst 2 in an exhaust gas flow passage 4, concentration of nitrogen oxide contained in combustion exhaust gas and/or air-fuel ratio of combustion exhaust gas in the upstream side and the downstream side of the three-way catalyst 2 in the exhaust gas flow passage 4 are acquired, degree of deterioration of the three-way catalyst 2 is diagnosed based on fluctuation of acquired concentration of nitrogen oxide and/or air-fuel ratio of combustion exhaust gas. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于诊断能够在包括加速操作区域的宽范围的操作条件的范围内能够精确地进行三元催化剂的劣化诊断的三元催化剂的劣化的方法。解决方案：用于诊断三元催化剂劣化的方法设置有能够连续测量燃烧废气中所含的氮氧化物浓度和/或上游侧燃烧废气的空燃比的检测器3 和排气流路4中的三元催化剂2的下游侧，燃烧废气中含有的氮氧化物的浓度和/或三种上游侧和下游侧的燃烧废气的空燃比获取废气流路4中的催化剂2，根据所获得的燃烧废气的氮氧化物浓度和/或空燃比的波动来诊断三元催化剂2的劣化程度。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2010121634A Exhaust emission control device 有权
标题翻译：排气排放控制装置
公开(公告)号：JP2010121634A
公开(公告)日：2010-06-03
申请号：JP2010055541
申请日：2010-03-12
申请人： National Traffic Safety & Environment Laboratory , Ngk Insulators Ltd , 日本碍子株式会社 , 独立行政法人交通安全環境研究所
发明人： YAMAMOTO TOSHIRO , SASAKI YUICHI , MIYASHITA TAKEYA
IPC分类号： F01N3/20 , F01N3/24 , F02D41/14 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of highly accurately diagnosing the deterioration in a three-way catalyst under a wide range operation condition including an acceleration operation area. SOLUTION: This exhaust emission control device is provided for purifying combustion exhaust gas exhausted from an internal combustion engine. The exhaust emission control device 1 has the three-way catalyst 2 arranged inside an exhaust flow passage 4 of the internal combustion engine, and the detectors 3 capable of continuously measuring the concentration of nitrogen oxides included in the combustion exhaust gas on the upstream side and the downstream side of the three-way catalyst 2 inside of the exhaust flow passage 4. The exhaust emission control device 1 can diagnose a deterioration degree of the three-way catalyst 2 by a variation in the concentration of the provided nitrogen oxides by measuring the concentration of the nitrogen oxides included in the combustion exhaust gas on the upstream side and the downstream side of the three-way catalyst of the exhaust flow passage. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够在包括加速操作区域的宽范围操作条件下高精度地诊断三元催化剂劣化的废气排放控制装置。解决方案：该废气排放控制装置用于净化从内燃机排出的燃烧废气。废气排放控制装置1具有布置在内燃机的排气通道4内的三元催化剂2和能够连续测量上游侧的燃烧废气中所含的氮氧化物的浓度的检测器3，三通催化剂2的下游侧。排气排放控制装置1可以通过测量所提供的氮氧化物的浓度的变化来诊断三元催化剂2的劣化程度在排气流路的三元催化剂的上游侧和下游侧的燃烧废气中包含的氮氧化物的浓度。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2005283266A Gas sensor element 审中-公开
标题翻译：气体传感器元件
公开(公告)号：JP2005283266A
公开(公告)日：2005-10-13
申请号：JP2004096345
申请日：2004-03-29
申请人： Ngk Insulators Ltd , 日本碍子株式会社
发明人： KURACHI HIROSHI , SASAKI YUICHI , MIYASHITA TAKEYA
IPC分类号： G01N27/416 , G01N27/407 , G01N27/419
CPC分类号： G01N27/4071 , G01N27/419
摘要： PROBLEM TO BE SOLVED: To provide an element structure capable of suppressing or preventing effectively crack generation in a gas sensor element having a laminated structure. SOLUTION: A buffer cavity 8 and the first and second cavities 10, 12 are formed so as to be extended with a prescribed width in the element longitudinal direction at the height corresponding to the thickness of a spacer layer 4b. The first partition 18 for partitioning the buffer cavity 8 from a gas introduction port 16 is fixed integrally to the first solid electrolyte layer 4a, and the first diffusion rate determining passage 20 is formed in a slit shape spreading in the element width direction between the first partition 18 and the second solid electrolyte layer 4c. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够有效地抑制或防止具有层叠结构的气体传感器元件中的裂纹产生的元件结构。解决方案：缓冲腔8和第一和第二腔10,12形成为在元件纵向方向上以与隔离层4b的厚度对应的高度延伸规定的宽度。用于将缓冲空腔8与气体导入口16分隔开的第一分隔部18与第一固体电解质层4a一体地固定，第一扩散速度决定通道20形成为沿着元件宽度方向在第一隔板18和第二固体电解质层4c。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2004317496A Gas sensor 有权
公开(公告)号：JP2004317496A
公开(公告)日：2004-11-11
申请号：JP2004072027
申请日：2004-03-15
申请人： Ngk Insulators Ltd , 日本碍子株式会社
发明人： KURACHI HIROSHI , SASAKI YUICHI , MIYASHITA TAKEYA
IPC分类号： G01N27/416 , G01N27/419
CPC分类号： G01N27/419 , G01N27/4067 , G01N27/4072
摘要： PROBLEM TO BE SOLVED: To improve the reliability of a gas sensor by relaxing a stress generated in a sensor element and avoiding the occurrence of cracks, or the like, by adjusting space in the sensor element. SOLUTION: A gas sensor 10A has a first space 20, where a gas to be measured is introduced via a first diffusion speed-control section 30 from a gas inlet hole 28; a main pump means 44 for controlling oxygen partial pressure in the gas to be measured introduced into the first space 20 to a specific value; a second space 22, where the gas to be measured is introduced via a second diffusion speed-control section 32 from the first space 20; and a pumping means 74 for measurement for reducing or decomposing NOx components in the gas to be measured introduced via a third diffusion speed-control section 72 from the second space 22, scooping up oxygen being generated at that time, and detecting current by the scooping-up of the oxygen. In the gas sensor 10A, the ratio (Wc/We) of width We of the tip section of the sensor element 12 and width Wc of the gas inlet hole 28 is set to be equal to or larger than 30% and less than 70%. COPYRIGHT: (C)2005,JPO&NCIPI

5. 发明专利

JPH0518934A ABNORMALITY-DETECTION METHOD OF OXYGEN ANALYSIS DEVICE 失效
公开(公告)号：JPH0518934A
公开(公告)日：1993-01-26
申请号：JP19836191
申请日：1991-07-15
申请人： NGK INSULATORS LTD
发明人： SASAKI YUICHI , KON MASAO
IPC分类号： G01N27/26 , G01N27/409 , G01N27/41
摘要： PURPOSE:To achieve a highly reliable gas calibration by judging an abnormality due to damage of a filter, an abnormality of a supply pipe, etc., by determining whether a sensor signal is within a specified region or not. CONSTITUTION:A calibration gas is introduced into a sensor portion of an oxygen analysis device and a sensor output is stored as E0 after a sensor setting time T0 passes. After the time T0 passes, a sensor signal Em is measured continuously for any time interval tw and it is judged whether the sensor signal exists between an upper-limit value SU and a lower-limit value SL or not. When the output Em does not exist between the values SU and SL, it is judged that the sensor is abnormal and a sensor abnormality signal is output. When the output Em is between the values SU and SL, Ec=¦Em-E0¦ is calculated continuously and Ec is compared with a preset reference value E continuously. Then, when Ec is smaller than the value E, it is judged that the sensor is normal. On the other hand, when Ec exceeds the value E, a calibration gas abnormality signal is output.

6. 发明专利

JPH04291141A FLAMMABLE GAS DETECTION DEVICE AND ITS COMPENSATION OPERATION METHOD 失效
公开(公告)号：JPH04291141A
公开(公告)日：1992-10-15
申请号：JP8062691
申请日：1991-03-20
申请人： NGK INSULATORS LTD
发明人： SASAKI YUICHI , KON MASAO
IPC分类号： G01N27/16
摘要： PURPOSE:To enable each constituent concentration within a combustion exhaust gas to be measured highly accurately even if a temperature and a flow rate of the combustion exhaust gas to be measured change. CONSTITUTION:In a flammable gas detection device using a flammable gas sensor 4, a temperature detection means 5 for detecting measurement gas temperature is provided near the gas sensor 4, temperature compensation of the gas sensor 4 is performed from the measured temperature, and a flow rate measuring mean 6 for detecting the flow rate of the measurement gas is provided near the gas sensor 4, thus enabling the flow rate of the gas sensor 4 to be compensated for from the measured flow rate.

7. 发明专利

JPH039255A METHOD FOR CALIBRATING GAS ANALYZER AND APPARATUS FOR ANALYZING GAS CONCENTRATION 失效
公开(公告)号：JPH039255A
公开(公告)日：1991-01-17
申请号：JP14309989
申请日：1989-06-07
申请人： NGK INSULATORS LTD
发明人： SASAKI YUICHI , OTA MOTOE , KATO KOJI
IPC分类号： G01N27/04 , G01N27/00 , G01N27/26 , G01N27/409
摘要： PURPOSE:To shorten the time required for calibration processing by substantially simultaneously supplying calibration gases to plural detecting parts and subjecting the electric signals generated from these plural detecting parts respectively to the calibration processing. CONSTITUTION:A solenoid valve SVS is first opened to simultaneously supply the gases from span calibration gas cylinders 10 to the detecting parts 1A to 3A. The flow of the calibration gases attains a stationary state upon lapse of the prescribed time and, therefore, the span calibration processing is started. The span calibration processing is executed in the sequence of the detecting parts 1A to 3A while the span calibration gases are kept passed to all of the detecting parts 1A to 3A. The electric signals generated in the detecting parts 1A to 3A are inputted to a CPU which calculates oxygen concn., compares the same with the true oxygen concn. of the span gases and calibrates calibration curves. The solenoid valve SVS is closed and a sole noid valve SVZ is opened upon lapse of the prescribed span gas supply time after the span calibration processing ends. A zero gas is thereafter supplied from a zero calibration gas cylinder 20 and the zero calibration of the detecting parts 1A to 3A is executed successively in the same sequence as mentioned above.

8. 发明专利

JPS6321549A THRESHOLD CURRENT MEASURING CIRCUIT 失效
公开(公告)号：JPS6321549A
公开(公告)日：1988-01-29
申请号：JP16626686
申请日：1986-07-15
申请人： NGK INSULATORS LTD
发明人： USAMI JUN , SASAKI YUICHI
IPC分类号： G01R19/15 , G01N27/406 , G01N27/41 , G01N27/416
摘要： PURPOSE:To increase the S/N ratio of a current signal keeping a voltage to be applied to a threshold current element almost constant, by applying a feedback to an input of an error amplifier for current supply from a connection between the threshold current element and a resistance for extracting current signal. CONSTITUTION:While an output current of an error amplifier 6 flows to a series circuit of a threshold current element 1 and a resistance 2 for drawing current, a value of a threshold current flowing through the element 1 is converted into a voltage with the resistance 2 according to the concentration of an O2 gas to be taken out of a signal line 8. A feedback is applied to an input terminal 9 of an amplifier 6 through a resistance 10 from a connection X between the element 1 and the resistance 2. A fixed reference voltage is applied to a terminal 9 from a Zener diode 4 and as an input terminal 13 of the amplifier 6 is grounded, which also keeps a potential of the terminal 9 zero, a feedback control is performed so that current I1 on the left of a point Y is equal in the absolute value to current I2 on the right thereof. Thus, regardless of a drop in the voltage of the resistance 2, the voltage at the point X is kept constant thereby enabling a sufficient increase in the S/N ratio of a current signal being extracted from the signal line 8.

9. 发明专利

JPS62172682A TEMPERATURE CONTROLLER FOR HEATER 失效
公开(公告)号：JPS62172682A
公开(公告)日：1987-07-29
申请号：JP1274086
申请日：1986-01-23
申请人： NGK INSULATORS LTD
发明人： USAMI JUN , HATTORI AKINOBU , SASAKI YUICHI
IPC分类号： H05B3/00

10. 发明专利

JPH06273364A CORRECTIVE OPERATION METHOD FOR GAS MEASURING EQUIPMENT 失效
公开(公告)号：JPH06273364A
公开(公告)日：1994-09-30
申请号：JP6423093
申请日：1993-03-23
申请人： NGK INSULATORS LTD
发明人： KON MASAO , SASAKI YUICHI
IPC分类号： G01N21/27 , G01N27/00 , G01N27/26
摘要： PURPOSE:To enhance accuracy by expressing the influence of mutual influence of sensors to be used numerically at the time of gas calibration and correcting the measurements of the sensors using the expression thereby correcting the measurements easily and accurately. CONSTITUTION:Sensors are subjected individually to gas calibration to determine interferential influence values a11-an1-a1n-anm thereof thus forming a matrix (formula I) of influence values for all sensors. Subsequently, measurements x1-xn are taken from the sensors and true measurements X1-X2 are determined by corrective operation (formula II) using the matrix of interferential influence values. This method does not require an operation for presetting the coefficients in corrective operation and since the coefficients are updated every time when gas calibration is performed, concentration of gas can be measured accurately using the newest coefficient regardless of the drift in the sensitivity of the sensors.

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