WO2008090125A1 - Verfahren zur plausibilisierung eines ermittelten differenzdruckwerts über einen partikelfilter - Google Patents
Verfahren zur plausibilisierung eines ermittelten differenzdruckwerts über einen partikelfilter Download PDFInfo
- Publication number
- WO2008090125A1 WO2008090125A1 PCT/EP2008/050645 EP2008050645W WO2008090125A1 WO 2008090125 A1 WO2008090125 A1 WO 2008090125A1 EP 2008050645 W EP2008050645 W EP 2008050645W WO 2008090125 A1 WO2008090125 A1 WO 2008090125A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- differential pressure
- pressure value
- plausibility
- determined
- internal combustion
- Prior art date
Links
Classifications
-
- 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
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
-
- 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
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
- F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
- F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
-
- 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
- F02D41/1448—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 exhaust gas pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/08—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a pressure sensor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/14—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0406—Intake manifold pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0812—Particle filter loading
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Definitions
- the invention relates to a method for checking the plausibility of a determined differential pressure value via a particle filter according to the features of the preamble of main claim 1.
- particulate filters can be used to reduce soot emissions.
- a regeneration of the particulate filter must be carried out when it has filled with soot to a certain limit in order to prevent clogging of the particulate filter with the accompanying exhaust gas back pressure and the risk of uncontrolled combustion of soot in the filter.
- a differential pressure sensor In order to measure the blockage of the particulate filter with soot, a differential pressure sensor is used. This differential pressure sensor measures the pressure difference between the two ends of the particulate filter. A high differential pressure value indicates a high clogging of the particulate filter, while a low differential pressure value is more a sign of an empty particulate filter. Based on the differential pressure value and on the respective engine operating point can then be calculated a loading value of the particulate filter. The load value can then be used inter alia to evaluate the effectiveness of a regeneration, and if necessary, further measures can be initiated.
- the object underlying the present invention is now to provide a method which carries out the simplest and quickest possible plausibility check of the determined differential pressure value.
- the advantages achieved by the invention are, in particular, that the plausibility of the differential pressure value is simpler by considering the charge pressure value of the internal combustion engine and provides more accurate results than a direct plausibility check of the differential pressure value at the differential pressure sensor.
- the method thus provides more accurate and relatively easily measurable information about the quality of the differential pressure value.
- Figure 1 is a block diagram for plausibility of the differential pressure value
- Figure 2 the correlation between the boost pressure of the engine and the differential pressure across a particulate filter.
- FIG. 1 shows a block diagram for plausibility checking of the differential pressure value via a particle filter 3.
- a particle filter 3 is arranged in the outlet tract 2 of an internal combustion engine 1.
- the arrangement has a differential pressure sensor, which transmits a determined differential pressure value ⁇ p to a control unit 4.
- the differential pressure ⁇ p corresponds to the pressure difference between the pressure pv of the exhaust gas before entering the particle filter 3 and the pressure p_n of the exhaust gas after exiting the particle filter 3.
- the control unit 4 additionally receives a continuous signal p L which corresponds to the boost pressure of the exhaust gas Internal combustion engine corresponds.
- each differential pressure value .DELTA.p is assigned a boost pressure value p_L, depending on the operating state of the internal combustion engine. This assignment was determined experimentally under the condition that it was ensured that no soot forms in the particle filter 3.
- the plausibility of a differential pressure value ⁇ p accordingly takes place in the control unit 4 by identifying a faulty differential pressure value ⁇ p when the differential pressure value ⁇ p is outside a specifiable upper and lower limit range around the differential pressure associated with the determined boost pressure value p_L.
- the upper and lower limit region corresponds to a tolerance range of the pressure difference sensor, within which a determined Can fluctuate without it being identified as faulty.
- a plausibility check of the determined differential pressure value at the differential pressure sensor takes place following a plausibility check of the determined charge pressure of the internal combustion engine. This is the only way to ensure that a correct and accurate plausibility check of the differential pressure value is carried out.
- FIG. 2 shows the correlation between the boost pressure p L of the internal combustion engine and the differential pressure via a particle filter.
- a linear correlation L of the differential pressure value ⁇ p and the boost pressure value p_L is shown for a defined operating state of the internal combustion engine.
- the linear correlation is within a limit range, which is determined by a predefinable upper limit OL and a predefinable lower limit UL.
- the upper and lower limit range continues to represent the tolerance range within which the pressure difference value may be located, without a faulty pressure value signal being identified.
- a boost pressure of the internal combustion engine L_g is determined. Due to the experimentally determined characteristic map, this boost pressure L_g establishes a limit range within which the determined pressure difference value must be located.
- the boost pressure in the case under consideration here based on the characteristic field stored in the control unit, is assigned a differential pressure value pm.
- the border area is defined by a predefinable upper limit OL and a predetermined upper limit. re lower limit UL determined by the differential pressure value pm.
- the differential pressure value .DELTA.pl ascertained at the differential pressure sensor must therefore be located within the pressure range which is defined by the limit values po and pu, so that the pressure difference value is not identified as defective.
- the differential pressure ⁇ pl is outside the range bounded by the limits po and pu. The differential pressure value ⁇ pl is thus identified by the control unit 4 as defective and further measures are initiated.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008800027488A CN101589215B (zh) | 2007-01-22 | 2008-01-21 | 通过粒子过滤器对确定的压力差值进行似真度检验的方法 |
US12/523,893 US8069713B2 (en) | 2007-01-22 | 2008-01-21 | Method for evaluating the plausibility of a pressure difference value determined across a particle filter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007003153.1 | 2007-01-22 | ||
DE102007003153A DE102007003153B4 (de) | 2007-01-22 | 2007-01-22 | Verfahren zur Plausibilisierung eines ermittelten Differenzdruckwerts über einen Partikelfilter |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008090125A1 true WO2008090125A1 (de) | 2008-07-31 |
Family
ID=39367336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/050645 WO2008090125A1 (de) | 2007-01-22 | 2008-01-21 | Verfahren zur plausibilisierung eines ermittelten differenzdruckwerts über einen partikelfilter |
Country Status (4)
Country | Link |
---|---|
US (1) | US8069713B2 (de) |
CN (1) | CN101589215B (de) |
DE (1) | DE102007003153B4 (de) |
WO (1) | WO2008090125A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT508433B1 (de) * | 2008-08-01 | 2015-12-15 | Steinbauer Electronics Dev Gmbh | Verfahren zur steuerung einer vorrichtung mit einem verbrennungsmotor sowie vorrichtung mit einem verbrennungsmotor |
DE102009014809B3 (de) * | 2009-03-25 | 2010-04-29 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Überprüfen einer Eindüsvorrichtung in einem Abgasnachbehandlungssystem einer Brennkraftmaschine |
DE102010035705A1 (de) * | 2010-08-27 | 2012-03-01 | Volkswagen Ag | Verfahren zur Verifizierung eines unter Anwendung wenigstens einer Messung ermittelten ersten Wertes, Verfahren zur Behandlung eines Diesel-Partikelfilters und Vorrichtung zur Verifizierung eines Differenzdruckwertes |
DE102011003740B4 (de) | 2011-02-08 | 2022-10-13 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Überwachung eines Differenzdrucksensors |
US20130204508A1 (en) * | 2012-02-08 | 2013-08-08 | GM Global Technology Operations LLC | System and method for controlling an engine |
DE102015211151B4 (de) | 2015-06-17 | 2021-08-12 | Vitesco Technologies GmbH | Verfahren und Vorrichtung zur Ermittlung des Beladungszustands eines Abgaspartikelfilters |
CN106500971A (zh) * | 2016-05-17 | 2017-03-15 | 上海为默机械科技有限公司 | 一种柴油颗粒捕集器的积碳再生及热疲劳仿真测试系统 |
DE102017006400A1 (de) * | 2017-07-06 | 2019-01-10 | Daimler Ag | Verfahren zum Beurteilen eines Zustands eines Partikelfilters und Abgasanlage für einen Kraftwagen |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002073011A1 (de) * | 2001-03-14 | 2002-09-19 | Robert Bosch Gmbh | Verfahren und vorrichtung zur überwachung eines signals |
GB2400444A (en) * | 2003-04-11 | 2004-10-13 | Ford Global Tech Llc | Determination of degradation of vehicle exhaust pressure sensor |
EP1564386A1 (de) * | 2004-02-12 | 2005-08-17 | Daimler Chrysler AG | Vorrichtung und Verfahren zur Ermittlung des Beladungszustands eines Partikelfilters |
WO2005085619A1 (de) * | 2004-03-06 | 2005-09-15 | Robert Bosch Gmbh | Verfahren zur diagnose eines drucksensors |
DE102004040924A1 (de) * | 2004-08-24 | 2006-03-02 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betrieb einer Wärmekraftmaschine |
Family Cites Families (9)
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DE4230180A1 (de) * | 1992-09-09 | 1994-03-10 | Eberspaecher J | Verfahren und Vorrichtung zur Ermittlung des Beladungszustands von Partikelfiltern |
JP4048993B2 (ja) * | 2003-04-08 | 2008-02-20 | 日産自動車株式会社 | エンジンの排気浄化装置 |
DE102004033412A1 (de) * | 2004-07-10 | 2006-02-02 | Robert Bosch Gmbh | Verfahren zum Betreiben eines in einem Abgasbereich einer Brennkraftmaschine angeordneten Partikelfilters und Vorrichtung zur Durchführung des Verfahrens |
DE102005049870B4 (de) * | 2005-10-18 | 2008-03-27 | Siemens Ag | Verfahren und Vorrichtung zur Erkennung eines fehlerhaften Anschlusses eines Differenzdrucksensors |
JP4762043B2 (ja) * | 2006-04-27 | 2011-08-31 | 本田技研工業株式会社 | パティキュレートフィルタの状態検知装置 |
JP4872615B2 (ja) * | 2006-11-14 | 2012-02-08 | 株式会社デンソー | 内燃機関の診断装置 |
JP2008157199A (ja) * | 2006-12-26 | 2008-07-10 | Mitsubishi Fuso Truck & Bus Corp | センサの異常検出装置 |
US20080155970A1 (en) * | 2006-12-27 | 2008-07-03 | Detroit Diesel Corporation | Method for verifying the functionality of the components of a diesel particulate filter system |
JP4737098B2 (ja) * | 2007-01-24 | 2011-07-27 | 株式会社デンソー | 内燃機関の診断装置 |
-
2007
- 2007-01-22 DE DE102007003153A patent/DE102007003153B4/de not_active Expired - Fee Related
-
2008
- 2008-01-21 WO PCT/EP2008/050645 patent/WO2008090125A1/de active Application Filing
- 2008-01-21 CN CN2008800027488A patent/CN101589215B/zh active Active
- 2008-01-21 US US12/523,893 patent/US8069713B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002073011A1 (de) * | 2001-03-14 | 2002-09-19 | Robert Bosch Gmbh | Verfahren und vorrichtung zur überwachung eines signals |
GB2400444A (en) * | 2003-04-11 | 2004-10-13 | Ford Global Tech Llc | Determination of degradation of vehicle exhaust pressure sensor |
EP1564386A1 (de) * | 2004-02-12 | 2005-08-17 | Daimler Chrysler AG | Vorrichtung und Verfahren zur Ermittlung des Beladungszustands eines Partikelfilters |
WO2005085619A1 (de) * | 2004-03-06 | 2005-09-15 | Robert Bosch Gmbh | Verfahren zur diagnose eines drucksensors |
DE102004040924A1 (de) * | 2004-08-24 | 2006-03-02 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betrieb einer Wärmekraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
US20100139382A1 (en) | 2010-06-10 |
CN101589215B (zh) | 2012-11-14 |
DE102007003153A1 (de) | 2008-07-31 |
DE102007003153B4 (de) | 2011-01-05 |
US8069713B2 (en) | 2011-12-06 |
CN101589215A (zh) | 2009-11-25 |
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