JP2014059326A - 広域ラムダセンサのための評価及び制御ユニット - Google Patents
広域ラムダセンサのための評価及び制御ユニット Download PDFInfo
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- 238000001514 detection method Methods 0.000 description 10
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/4065—Circuit arrangements specially adapted therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
- F02D2041/281—Interface circuits between sensors and control unit
- F02D2041/285—Interface circuits between sensors and control unit the sensor having a signal processing unit external to the engine control unit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
- F02D41/1456—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio with sensor output signal being linear or quasi-linear with the concentration of oxygen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1493—Details
- F02D41/1495—Detection of abnormalities in the air/fuel ratio feedback system
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Abstract
【解決手段】信号処理ユニットと、アナログデジタル変換器と、デジタルポンプ電流制御器と、デジタルインターフェースと、ポンプ電流源と、内部ポンプ電極端子と、外部ポンプ電極端子と、基準電極端子とを有し、前記信号処理ユニットは、前記広域ラムダセンサのポンプ電流制御器に対する実際値を求めるために設けられ、前記信号処理ユニットは、前記広域ラムダセンサの動作状態に関する情報を求めるために設けられ、前記広域ラムダセンサの動作状態に関する情報は、ケーブル短絡又はケーブル電圧降下の存在に関する情報を含み、さらに前記広域ラムダセンサの動作状態に関する情報は、デジタルインターフェースを介して出力されるように構成する。
【選択図】図1
Description
Up=Up0+(Rzua+Rzui+Riape)*Ip
この場合、以下の式、
Up0=Up0ape+Up0ipe
がなりたつ。
1)Up0>0、Ip>0の条件下で:スイッチS6及びS4が閉成するケース;
2)Up0<0、Ip<0の条件下で:スイッチS7及びS3が閉成するケース;
3)Up0>0、Ip<0の条件下で:スイッチS7及びS1が閉成するケース;
4)Up0<0、Ip>0の条件下で:スイッチS6及びS2が閉成するケース。
Un0:RE−IPE、Ip=0,Ipr=0
休止期間中のUn検出に対する制御器実際値(Un0−Regler)
Ri:RE−IPE、Ip=0,Ipr>0→Un;Ri≒Un−Un0
温度制御、ケーブル電圧降下診断RE、IPE
Up0:APE−IPE、Ip=0,Ipr=0
黒化保護、経年劣化診断、Ipcal活性化
Riape測定、限界電流モードのガイド量
Up:APE−IPE、Ip>0,Ipr=0
ケーブル電圧降下診断APE、IPE、Ripe測定
LSF:LSF−診断機能→Un0−Up0からのラムダ値ステップチェンジ
Rcal:Rcal−GND、RcalにおけるIpr
較正Ri測定、ラムダ特性曲線に対するIpref補正
Ipcal:APE−MES、RmessにおけるIp
ポンプ電流−較正量
Rzu:RE−IPE、Ip>0,Ipr=0
補正Ri測定 ポンプセル、目標値補正Unav制御、ケーブル電圧降下識別
Rgnd:RG−GND、逆パルスモードにおけるIp>0
ケーブル電圧降下識別RcodeのためのIp検出。
5 信号処理ユニット
6 アナログデジタル変換器
7 デジタルポンプ電流制御器
8 デジタルインターフェース
10 制御部
11 ポンプ電流源
12 基準電流源
RE 基準電極端子
IPE 内部ポンプ電極端子
APE 外部ポンプ電極端子
Claims (1)
- 広域ラムダセンサのための評価及び制御ユニット(1)において、
信号処理ユニット(5)と、
前記信号処理ユニット(5)に接続されているアナログデジタル変換器(6)と、
前記アナログデジタル変換器(6)に接続されているデジタルポンプ電流制御器(7)と、
前記デジタルポンプ電流制御器(7)に接続されているデジタルインターフェース(8)と、
前記デジタルポンプ電流制御器に接続されている制御部(10)と、
ポンプ電流を供給するためのポンプ電流源(11)と、
内部ポンプ電極端子(IPE)と、
外部ポンプ電極端子(APE)と、
基準電極端子(RE)とを有しており、
前記信号処理ユニット(5)は、前記広域ラムダセンサのポンプ電流制御器(7)に対する実際値を求めるために設けられ、
前記信号処理ユニット(5)は、前記広域ラムダセンサの動作状態に関する情報を求めるために設けられており、
前記広域ラムダセンサの動作状態に関する情報は、デジタルインターフェース(8)を介して出力されるように構成されており、
ここで前記情報の1つは、
ケーブル短絡又はケーブル電圧降下の存在に関する情報か、又は、
前記広域ラムダセンサの異なる動作状態における前記広域ラムダセンサの電極の電荷状態に関する情報か、又は、
前記広域ラムダセンサの経年劣化に関する情報か、又は、
ラムダ値1からの経過値に関する情報か、又は、
前記広域ラムダセンサの動作準備に関する情報であることを特徴とする評価及び制御ユニット。
Applications Claiming Priority (2)
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DE102008001697.7 | 2008-05-09 | ||
DE200810001697 DE102008001697A1 (de) | 2008-05-09 | 2008-05-09 | Auswerte- und Steuereinheit für eine Breitband-Lambdasonde |
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JP2014001851A Active JP5746383B2 (ja) | 2008-05-09 | 2014-01-08 | 広域ラムダセンサのための評価及び制御ユニット |
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EP (1) | EP2277035B1 (ja) |
JP (2) | JP5457433B2 (ja) |
CN (1) | CN102016557B (ja) |
DE (1) | DE102008001697A1 (ja) |
ES (1) | ES2617614T3 (ja) |
WO (1) | WO2009135862A1 (ja) |
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DE202009003113U1 (de) | 2009-03-09 | 2010-07-29 | Solarhybrid Ag | Hydraulische Weiche zum Anschluss von Wärmeerzeugern an eine Heizungsanlage und Heizungsanlage mit einer hydraulischen Weiche |
DE102009050224B4 (de) * | 2009-10-22 | 2016-03-31 | Continental Automotive Gmbh | Vorrichtung und Verfahren zur Ansteuerung eines Abgassensors |
DE102010000663A1 (de) | 2010-01-05 | 2011-07-07 | Robert Bosch GmbH, 70469 | Vorrichtung und Verfahren zur Steuerung und Auswertung eines Abgassensors |
DE102010029776A1 (de) | 2010-06-08 | 2011-12-08 | Robert Bosch Gmbh | Verfahren zum Erkennen des Typs von Lambdasonden |
US20130062200A1 (en) * | 2010-06-23 | 2013-03-14 | Toyota Jidosha Kabushiki Kaisha | Abnormality diagnostic apparatus for gas sensor |
DE102011004073A1 (de) | 2011-02-14 | 2012-08-16 | Continental Automotive Gmbh | Verfahren und Vorrichtung zur Diagnose der elektrischen Kontaktierung eines Abgassensors |
DE102011007068A1 (de) * | 2011-04-08 | 2012-10-11 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Breitband-Lambdasonde |
DE102011077171A1 (de) | 2011-05-18 | 2012-11-22 | Robert Bosch Gmbh | Verfahren und Steuereinheit zur Überwachung von Kabelfehlern an einer Breitband-Lambdasonde |
ITMI20120780A1 (it) * | 2011-05-18 | 2012-11-19 | Bosch Gmbh Robert | Procedimento ed unita' di comando per sorvegliare difetti di cavi su una sonda lambda a banda larga |
DE102011086144A1 (de) * | 2011-11-11 | 2013-05-16 | Robert Bosch Gmbh | Verfahren zur Korrektur von Messwerten eines Sensorelements |
DE102011089383A1 (de) * | 2011-12-21 | 2013-06-27 | Robert Bosch Gmbh | Verfahren zur Korrektur von Messwerten eines Sensorelements |
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- 2009-05-06 JP JP2011507905A patent/JP5457433B2/ja not_active Expired - Fee Related
- 2009-05-06 ES ES09742080.6T patent/ES2617614T3/es active Active
- 2009-05-06 CN CN200980116461.2A patent/CN102016557B/zh active Active
- 2009-05-06 EP EP09742080.6A patent/EP2277035B1/de active Active
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Also Published As
Publication number | Publication date |
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EP2277035B1 (de) | 2016-11-30 |
WO2009135862A1 (de) | 2009-11-12 |
DE102008001697A1 (de) | 2009-11-12 |
JP2011520112A (ja) | 2011-07-14 |
EP2277035A1 (de) | 2011-01-26 |
CN102016557A (zh) | 2011-04-13 |
JP5457433B2 (ja) | 2014-04-02 |
ES2617614T3 (es) | 2017-06-19 |
CN102016557B (zh) | 2014-12-24 |
JP5746383B2 (ja) | 2015-07-08 |
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