公开(公告)号：US20240053296A1

公开(公告)日：2024-02-15

申请号：US17766360

申请日：2020-09-22

Applicant: Robert Bosch GmbH

Inventor： Bernhard Ledermann ,  Hanna Huber ,  Ralf Zimmerschied

IPC: G01N27/417 ,  G01M15/10 ,  G01N27/419 ,  F04B43/04

CPC classification number: G01N27/4175 ,  G01M15/10 ,  G01N27/419 ,  F04B43/043

Abstract: A method for operating a wide-band lambda probe. The method includes controlling the Nernst voltage to a predefined setpoint value by setting the pump voltage and/or the pump current, measuring the pump voltage and/or the pump current and/or the lambda value, forming measured value pairs based on measured measuring values of the pump voltage, the pump current and/or the lambda value, calculating a regression line based on the measured value pairs in order to approximate a predefined part of a reference characteristic curve of the pump voltage, and ascertaining a pump current offset and/or lambda offset based on the regression line.

公开(公告)号：US20230144467A1

公开(公告)日：2023-05-11

申请号：US17915352

申请日：2021-03-22

Applicant: Viessmann Climate Solutions SE

Inventor： Eugen GLEIM ,  Marco LINK

IPC: F23N5/24 ,  F23N5/00 ,  F23N1/00 ,  G01N27/417 ,  G01N27/409

CPC classification number: F23N5/242 ,  F23N5/006 ,  F23N1/002 ,  G01N27/4175 ,  G01N27/409 ,  F23N2227/18 ,  F23N2227/20

Abstract: A gas burner comprises an automatic firing unit for regulating or controlling an amount of gas supplied to the gas burner via a gas control valve and a lambda probe (1) arranged in the exhaust gas flow for measuring a residual oxygen content in the exhaust gas. A method for operating the gas burner comprises a first operating state in which the gas burner is operated in standard mode, wherein the residual oxygen content in the exhaust gas is regulated via the measured value of the lambda probe (1). According to the invention, in a second operating state, the gas burner performs a fault test on the lambda probe (1) involving the steps of: deactivating (S18) a supply of power to a pump cell (PZ) of the lambda probe (1); determining a present test voltage (h) of a measurement cell (NZ) of the lambda probe (1); comparing (S25) the present test voltage (h) with a predefined test setpoint voltage (i) and determining a difference; and if the difference exceeds a predefined limit value, performing a safety deactivation (S29); or if the difference does not exceed the predefined limit value, operating the gas burner in the first operating state.

公开(公告)号：US20180356381A1

公开(公告)日：2018-12-13

申请号：US15780471

申请日：2016-11-30

Applicant: InnoSense AS

Inventor： Stian Haland ,  Morgan Kjolerbakken ,  Franck Rene Dauge ,  Terje Grontoft ,  Torbjorn Heltne

IPC: G01N33/00 ,  G01N27/417 ,  G01N27/416

CPC classification number: G01N33/006 ,  G01N27/4162 ,  G01N27/4175 ,  G01N33/0016

Abstract: An air monitoring system for analysing an air sample including: a duct arranged such that the air sample flows therethrough from an inlet to an outlet; a relative humidity sensor arranged to measure a relative humidity of the air sample; a heating module including a first heater arranged to heat the air sample; a temperature sensor arranged to measure a temperature of the air sample; a controller arranged selectively to operate the first heater if the measured relative humidity is above an upper threshold; and an analysis module including at least one chemical analysis transducer providing an output corresponding to a presence or concentration of a predetermined substance in the air sample.

公开(公告)号：US20180306136A1

公开(公告)日：2018-10-25

申请号：US15956430

申请日：2018-04-18

Applicant: NGK Spark Plug Co., LTD.

Inventor： Junichiro MITSUNO ,  Satoru ABE ,  Chihiro TOMIMATSU ,  Hidetoshi MAKINO

IPC: F02D41/14 ,  G01N27/04 ,  F02D41/28 ,  G01N33/00 ,  G01N27/419 ,  G01N27/406

CPC classification number: F02D41/1495 ,  F02D41/1454 ,  F02D41/1456 ,  F02D41/1477 ,  F02D41/28 ,  F02D2041/281 ,  G01N27/045 ,  G01N27/4065 ,  G01N27/4175 ,  G01N27/419 ,  G01N33/0036 ,  G01N33/007 ,  G01N33/0073

Abstract: An anomaly determination apparatus determines an anomaly of a current control apparatus which supplies a control current to a control target and includes a current anomaly determination section. The current anomaly determination section is configured to compare a normal numerical range within which a state quantity changing with the control current falls in a particular state with a particular state quantity which is the state quantity corresponding to the control current generated by the control current generation section in the particular state, and determine that at least one of the reference resistor, the reference current generation section, and the control current generation section is in an anomalous state in the case where the particular state quantity has deviated from the normal numerical range. By using the current anomaly determination section, the anomaly determination apparatus can determine an anomaly of the current control apparatus.

公开(公告)号：US20180179979A1

公开(公告)日：2018-06-28

申请号：US15846569

申请日：2017-12-19

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroshi MIYAMOTO ,  Koji HAGIWARA ,  Masahiko MASUBUCHI ,  Yasushi IWAZAKI ,  Toru KIDOKORO

IPC: F02D41/22 ,  G01N27/407 ,  G01N27/416 ,  G01N27/409

CPC classification number: F02D41/222 ,  G01N27/4073 ,  G01N27/4077 ,  G01N27/409 ,  G01N27/4163 ,  G01N27/4175 ,  G01N33/0037 ,  Y02A50/245

Abstract: An object is to estimate the responsiveness of an exhaust gas sensor with as high accuracy as possible and to determine abnormality in the responsiveness of the exhaust gas sensor accurately. A diagnosis apparatus for the exhaust gas sensor comprises a controller configured to perform oxygen concentration control to change the oxygen concentration in the exhaust gas, calculate a responsiveness index correlating with the responsiveness of the exhaust gas sensor by diving the largest value of an absolute change rate defined as the absolute value of the change rate of the output signal of the exhaust gas sensor during a reference period by the difference between the value of the output signal at the time when the absolute change rate becomes largest and the converged value of the output signal with the reference period, and estimate the responsiveness of said exhaust gas sensor on the basis of said responsiveness index.

公开(公告)号：US20180067073A1

公开(公告)日：2018-03-08

申请号：US15696742

申请日：2017-09-06

Applicant: NGK Spark Plug Co., LTD.

Inventor： Chihiro TOMIMATSU ,  Satoru TODA ,  Yoshihiro NAKANO

IPC: G01N27/406 ,  G01N27/41 ,  G01N27/407 ,  G01N33/00 ,  H03H17/00

CPC classification number: G01N27/4065 ,  G01N27/4067 ,  G01N27/4074 ,  G01N27/4075 ,  G01N27/41 ,  G01N27/4175 ,  G01N27/419 ,  G01N33/0037 ,  G01N33/0054 ,  H03H17/0009

Abstract: A multi-gas detection apparatus includes a concentration output computation section, a concentration computation section and a weighted average computation section. The concentration computation section computes the concentration of ammonia and the concentration of NO2 on the basis of a first pumping current and first and second ammonia electromotive forces. The concentration output computation section and the concentration computation section computes the concentration of NOx on the basis of the computed ammonia concentration, the computed NO2 concentration, and second pumping current. The weighted average computation section decreases the response speed of the first pumping current, which changes in accordance with the oxygen concentration, by digital filter processing. The weighted average computation sections decrease the response speeds of the first and second ammonia electromotive forces, which change in accordance with the ammonia concentration and the NO2 concentration, by digital filter processing.

公开(公告)号：US20180024093A1

公开(公告)日：2018-01-25

申请号：US15617755

申请日：2017-06-08

Applicant: FUJITSU TEN LIMITED ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masatoshi WATANABE ,  Shigeto UMEYAMA ,  Satoshi NOGUCHI ,  Motoki KOMIYA ,  Keisuke KIDO ,  Hiroto MIURA

IPC: G01N27/416 ,  G01N27/407 ,  G01N27/406 ,  G01N27/41

CPC classification number: G01N27/4163 ,  F01N2560/025 ,  F02D41/1454 ,  F02D41/1495 ,  G01N27/4067 ,  G01N27/4073 ,  G01N27/4075 ,  G01N27/4077 ,  G01N27/41 ,  G01N27/4175

Abstract: A controller of an air-fuel-ratio sensor according to an embodiment includes a current supplying unit, a sweep processing unit, and an abnormality detecting unit. The current supplying unit supplies a current to the pump cell through a first terminal connected with the pump cell so as to control the pump cell. The sweep processing unit executes a sweeping process in which a predetermined voltage or a predetermined current is applied to the detection cell through a second terminal connected with the detection cell so as to change a voltage and a current of the detection cell. The abnormality detecting unit detects a short-circuited state between the first terminal and the second terminal on the basis of a fluctuation in a voltage or a current, generated by the sweeping process, of the first terminal.

公开(公告)号：US09535023B2

公开(公告)日：2017-01-03

申请号：US14487844

申请日：2014-09-16

Applicant: Abbott Diabetes Care Inc.

Inventor： Alexander G. Ghesquiere ,  Simon Tonks

IPC: G01N27/04 ,  C12Q1/00 ,  G01N27/327 ,  G01N31/00 ,  G01N27/417

CPC classification number: G01N27/3274 ,  C12Q1/001 ,  C12Q1/006 ,  G01N27/04 ,  G01N27/4163 ,  G01N27/4175 ,  G01N31/00

Abstract: An analyte test sensor for use in measuring the concentration of a particular analyte in a test sample includes a non-conductive substrate, a reference electrode deposited on the substrate, a working electrode deposited on the substrate and a compensation electrode deposited on the substrate. The compensation electrode is provided with a resistive ladder and is designed to correct for test result inaccuracies which are the result of variances in the manufacturing of the test sensor. Specifically, in one embodiment, the compensation electrode corrects for test result inaccuracies in an analog manner by shunting a portion of the working current away from working electrode. In another embodiment, the compensation electrode corrects for test result inaccuracies in a digital manner by providing a calibration code which is proportional its resistance value. A batch of analyte test sensors are preferably manufactured in the following manner. An initial batch of the test sensors is constructed. Then, a limited sampling of the sensors is tested for accuracy using a control sample. Based on the test results, the resistance value of the compensation electrode for each remaining sensor in the batch is adjusted accordingly.

Abstract translation: 用于测量测试样品中特定分析物的浓度的分析物测试传感器包括非导电衬底，沉积在衬底上的参考电极，沉积在衬底上的工作电极和沉积在衬底上的补偿电极。 补偿电极设有电阻梯，用于校正测试结果不准确，这是测试传感器制造方差的结果。 具体地说，在一个实施例中，补偿电极通过将工作电流的一部分分流离开工作电极来以模拟方式校正测试结果不准确。 在另一个实施例中，补偿电极通过提供与其电阻值成比例的校准代码以数字方式校正测试结果不准确。 一批分析物测试传感器优选以如下方式制造。 构建初始批次的测试传感器。 然后，使用对照样品测量传感器的有限采样精度。 根据测试结果，相应地调整批次中每个剩余传感器的补偿电极的电阻值。

公开(公告)号：US20160327512A1

公开(公告)日：2016-11-10

申请号：US15109318

申请日：2014-12-03

Applicant: ROBERT BOSCH GMBH

Inventor： Goetz Reinhardt ,  Martin Buchholz

IPC: G01N27/417 ,  G01N27/419 ,  G01N27/41 ,  G01N27/409 ,  G01N27/406

CPC classification number: G01N27/4175 ,  G01N27/4065 ,  G01N27/4067 ,  G01N27/409 ,  G01N27/41 ,  G01N27/419 ,  G01N33/007

Abstract: A method for monitoring a capability of an exhaust-gas analyzer probe in an exhaust passage of an internal combustion engine operated with lean combustion to measure rich gas. Exhaust gas is diffused in the exhaust-gas analyzer probe from the exhaust passage via a diffusion barrier into a measuring cavity of the exhaust-gas analyzer probe, and with the aid of a pump cell having an inner pump electrode and a second pump electrode, by applying a pump voltage between the electrodes, oxygen is pumped into or out of the measuring cavity according to a flowing pump current. During a lean operation mode of the internal combustion engine, the pumping direction of the pump cell is reversed during a diagnostic phase and oxygen is pumped into the measuring cavity, and the capability of the exhaust-gas analyzer probe to measure rich gas is inferred from the pump current and/or the pump voltage.

Abstract translation: 一种用于监测在利用稀薄燃烧操作的内燃机的排气通道中的排气分析器探头的能力的方法，以测量富气。 排气在排气分析器探头中从排气通道经由扩散阻挡物扩散到排气分析器探针的测量腔中，借助于具有内泵电极和第二泵电极的泵电池， 通过在电极之间施加泵浦电压，根据流动的泵浦电流将氧气泵入或流出测量腔。 在内燃机的精馏操作模式期间，泵单元的泵送方向在诊断阶段相反，氧气被泵入测量腔，排气分析仪测量富气的能力由 泵电流和/或泵电压。

公开(公告)号：US20160223488A1

公开(公告)日：2016-08-04

申请号：US14917326

申请日：2014-09-11

Applicant: DENSO CORPORATION

Inventor： Ryozo KAYAMA ,  Yukihiro YAMASHITA ,  Yoshihiro SAKASHITA

IPC: G01N27/419 ,  G01N27/409 ,  F01N11/00 ,  G01N27/41

CPC classification number: G01N27/419 ,  F01N11/007 ,  G01N27/409 ,  G01N27/41 ,  G01N27/4175 ,  Y02T10/47

Abstract: A NOx sensor includes a pump cell, a monitor cell, and a sensor cell, and the pump cell discharges an oxygen in an exhaust gas introduced into a chamber. The sensor cell outputs a detected signal depending on a concentration of a NOx according to a gas after the oxygen is discharged. A microcomputer of a sensor control circuit temporarily changes an amount of the oxygen discharged by the pump cell, and then calculates output change amounts ΔIp, ΔIs, and ΔIm of the cells. The microcomputer performs a correction of the concentration of the NOx detected by the sensor cell and a deterioration diagnosis of the sensor cell, based on the output change amounts ΔIp, ΔIs, and ΔIm of the cells. When the sensor cell current Is is smaller than the monitor cell current Im, the microcomputer determines that the NOx sensor has an abnormality.

Abstract translation: NOx传感器包括泵电池，监测电池和传感器电池，泵电池对引入室内的废气中的氧气进行放电。 传感器单元根据氧气排出后的气体的NOx浓度输出检测信号。 传感器控制电路的微计算机暂时改变由泵浦单元排出的氧的量，然后计算单元的输出变化量ΔIp，ΔIs和ΔIm。 微型计算机基于单元的输出变化量ΔIp，ΔIs和ΔIm，对传感器单元检测到的NOx的浓度进行校正和传感器单元的劣化诊断。 当传感器单元电流Is小于监视单元电流Im时，微型计算机确定NOx传感器具有异常。