EP1766216A2 - System for evaluating regeneration of pollution management means integrated in a motor vehicle engine exhaust line - Google Patents
System for evaluating regeneration of pollution management means integrated in a motor vehicle engine exhaust lineInfo
- Publication number
- EP1766216A2 EP1766216A2 EP05781794A EP05781794A EP1766216A2 EP 1766216 A2 EP1766216 A2 EP 1766216A2 EP 05781794 A EP05781794 A EP 05781794A EP 05781794 A EP05781794 A EP 05781794A EP 1766216 A2 EP1766216 A2 EP 1766216A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- regeneration
- thermal power
- upstream
- gases
- exhaust line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/0237—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles for regenerating ex situ
-
- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
-
- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
- F01N3/0253—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
-
- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
-
- 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
- F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
- F01N2430/06—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by varying fuel-air ratio, e.g. by enriching fuel-air mixture
-
- 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
- F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
- F01N2550/04—Filtering activity of particulate filters
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/10—Carbon or carbon oxides
Definitions
- the present invention relates to a system for evaluating a regeneration of depollution means integrated in an exhaust line of a motor vehicle engine and in particular the efficiency thereof.
- Certain systems for controlling the operation of an engine indeed require, for their operation, information relating to the progress of a regeneration phase of this type of depollution means such as a particulate filter. These systems are indeed designed to take into account such information in order to modify, for example, the conditions under which the next regeneration attempts of the filter will take place.
- the systems used so far to obtain this type of information are either relatively complex or unreliable.
- the object of the invention is therefore to solve these problems by proposing such a system.
- the subject of the invention is a system for evaluating a regeneration of depollution means integrated in an exhaust line of a motor vehicle engine, characterized in that it comprises means for determining the thermal power provided by the exhaust gases upstream of the pollution control means during the regeneration phase thereof and means for comparing this power with threshold values to determine a failed, partial or total regeneration of these means; .
- the means for determining the thermal power are associated with means for determining the flow rate of the gases in the exhaust line and the temperature thereof upstream of the depollution means and comprise:
- T represents the temperature of the gases upstream of the depollution means, and means for calculating the supplied thermal power Pu, according to the relation:
- T upstream FAP represents the temperature of the exhaust gases upstream of the depollution means
- the determination means comprise means for averaging the values of the thermal powers calculated at each time step during the regeneration,
- the comparison means are adapted to compare the average thermal power with a predetermined low threshold value and with a predetermined high threshold value to evaluate a failed regeneration if the average thermal power is lower than the low threshold value, a total regeneration if the thermal power is greater than the high threshold value and a partial regeneration in other cases,
- the thermal power supplied is calculated between the activation of a request for assistance with the regeneration plus a predetermined period of time and the stopping of this request for help plus the predetermined period of time, and
- FIG. 1 represents a block diagram illustrating the general structure of an evaluation system according to the invention associated with a motor vehicle engine
- FIG. 2 represents a flowchart illustrating the operation of this system.
- FIG. 1 has in fact shown a system for evaluating a regeneration of depollution means such as a particle filter designated by the general reference 1 in this figure, integrated into an exhaust line 2 of a motor vehicle engine 3.
- depollution means such as a particle filter designated by the general reference 1 in this figure
- depollution means can be envisaged as is well known in the state of the art (particulate filter, catalyzed particle filter, NOx trap, particulate filter impregnated with a trap function to NOx, oxidation catalyst or SCR, etc.).
- this system comprises means for determining the thermal power provided by the exhaust gases upstream of the particulate filter 1 during the regeneration phase thereof and means for comparing this power with values threshold for determining a failed, partial or total regeneration of the particulate filter.
- These means comprise for example an appropriate calculator designated by the general reference 4, and connected to means for determining the flow rate of the gases in the exhaust line designated by the general reference 5 in this figure and formed by any appropriate means and to means for determining the temperature of these gases upstream of the particulate filter, these means being designated by the general reference 6 in this figure and also including any appropriate means.
- This computer also receives, as input, predetermined low threshold and predetermined high threshold values, denoted Sb and Sh respectively in this FIG. 1, from means for establishing them designated by references 7 and 8.
- FIG. 2 The operation of this system is illustrated in FIG. 2. This starts with a step 10 of acquiring gas flow information in the exhaust line and temperature thereof upstream of the particulate filter. Then during a step 11, the computer 4 is adapted to calculate the thermal capacity of the exhaust gas, cp, according to the relation:
- T represents the temperature of the gases upstream of the particulate filter.
- the computer is adapted to calculate the supplied thermal power Pu 1 , according to the relation: P th ⁇ Gas flow * (T upstream FAP) * c p in which:
- the computer is then adapted to perform, during step 13, the average of the values of the thermal powers calculated at each time step during the regeneration of the particulate filter, in order to deliver a mean thermal power denoted Pth average.
- this average thermal power is compared with the high and low threshold values respectively to allow the computer if this average thermal power is greater than the high threshold value, to deliver a total regeneration information of the particle filter, if the average thermal power is lower than the low threshold value, to deliver a failed regeneration information of the particulate filter and in other cases, to provide partial regeneration information of the particulate filter.
- the thermal power supplied can be calculated between the initiation of a request for regeneration assistance plus a predetermined period of time and the stopping of this request for assistance plus the predetermined period of time, this period. time being for example calibrated, in order to take into account the response time of the information acquisition means as well as the thermal inertia of the exhaust line.
- the average value Pth moy is in fact the image of the efficiency, for example of the post-injections used to help the regeneration of the particulate filter, in terms of the thermal level generated during the request for help. .
- the average value Pth moy is in fact the image of the efficiency, for example of the post-injections used to help the regeneration of the particulate filter, in terms of the thermal level generated during the request for help.
- other embodiments may be envisaged as well as other reports of the regeneration / estimation of the efficiency of the regeneration of the depollution means.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Hybrid Electric Vehicles (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0406859A FR2872207B1 (en) | 2004-06-23 | 2004-06-23 | SYSTEM FOR EVALUATING A REGENERATION OF INTEGRATED EMISSION MEANS IN AN EXHAUST LINE OF A MOTOR VEHICLE ENGINE |
PCT/FR2005/050465 WO2006005868A2 (en) | 2004-06-23 | 2005-06-20 | System for evaluating regeneration of pollution management means integrated in a motor vehicle engine exhaust line |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1766216A2 true EP1766216A2 (en) | 2007-03-28 |
EP1766216B1 EP1766216B1 (en) | 2007-11-07 |
Family
ID=34947167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05781794A Not-in-force EP1766216B1 (en) | 2004-06-23 | 2005-06-20 | System for evaluating regeneration of pollution management means integrated in a motor vehicle engine exhaust line |
Country Status (8)
Country | Link |
---|---|
US (1) | US7775033B2 (en) |
EP (1) | EP1766216B1 (en) |
AT (1) | ATE377703T1 (en) |
DE (1) | DE602005003229T2 (en) |
ES (1) | ES2294735T3 (en) |
FR (1) | FR2872207B1 (en) |
PT (1) | PT1766216E (en) |
WO (1) | WO2006005868A2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2872213B1 (en) * | 2004-06-23 | 2006-11-03 | Peugeot Citroen Automobiles Sa | EMERGENCY MEANS REGENERATION SYSTEM FOR MOTOR VEHICLE ENGINE |
FR2872214B1 (en) | 2004-06-23 | 2006-11-03 | Peugeot Citroen Automobiles Sa | SYSTEM FOR MONITORING THE REGENERATION OF MEANS OF DEPOLLUTION |
AU2007322137B2 (en) | 2006-11-16 | 2013-01-24 | Rex Medical, L.P. | Spinal implant and method of use |
FR2910928B1 (en) * | 2006-12-29 | 2009-11-13 | Renault Sas | METHOD FOR CONTROLLING THE EXHAUST GAS TEMPERATURE OF A THERMAL ENGINE |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5626014A (en) * | 1995-06-30 | 1997-05-06 | Ford Motor Company | Catalyst monitor based on a thermal power model |
DE19736233C2 (en) * | 1997-08-20 | 2001-03-29 | Siemens Ag | Procedure for checking a catalyst |
DE19753842C2 (en) * | 1997-12-04 | 1999-10-07 | Siemens Ag | Method for operating an exhaust gas catalytic converter for an internal combustion engine |
FR2774421B1 (en) * | 1998-02-02 | 2000-04-21 | Peugeot | SYSTEM FOR MANAGING THE OPERATION OF A PARTICLE FILTER ASSOCIATED WITH A DIESEL ENGINE IN PARTICULAR OF A MOTOR VEHICLE |
DE19811574A1 (en) * | 1998-03-17 | 1999-09-23 | Siemens Ag | Vehicle internal combustion (IC) engine catalyst functionability monitoring method |
US6363713B1 (en) * | 2000-07-20 | 2002-04-02 | Ford Global Technologies, Inc. | On-board diagnostics for detecting the operation of diesel emissions control system |
US6408616B1 (en) * | 2000-07-20 | 2002-06-25 | Ford Global Technologies, Inc. | Diesel OBD-II system for detection of degradation of catalyst activity |
US6453666B1 (en) * | 2001-06-19 | 2002-09-24 | Ford Global Technologies, Inc. | Method and system for reducing vehicle tailpipe emissions when operating lean |
FR2829798B1 (en) * | 2001-09-14 | 2004-01-23 | Renault | METHOD FOR MANAGING THE OPERATION OF A CATALYTIC PHASE COATED PARTICLE FILTER FOR A COMBUSTION ENGINE |
FR2832182B1 (en) | 2001-11-13 | 2004-11-26 | Peugeot Citroen Automobiles Sa | ASSISTANCE SYSTEM FOR THE REGENERATION OF EMISSION CONTROL MEASURES INTEGRATED IN AN EXHAUST SYSTEM OF A MOTOR VEHICLE |
KR20030096939A (en) * | 2002-06-18 | 2003-12-31 | 현대자동차주식회사 | regeneration system of filter for eliminating particulate material of diesel engine |
JP2004116332A (en) * | 2002-09-25 | 2004-04-15 | Nissan Motor Co Ltd | Exhaust emission control device of internal combustion engine |
DE10307457B4 (en) * | 2003-02-21 | 2006-10-26 | Audi Ag | Method for operating a nitrogen oxide storage catalytic converter of an internal combustion engine |
-
2004
- 2004-06-23 FR FR0406859A patent/FR2872207B1/en not_active Expired - Fee Related
-
2005
- 2005-06-20 AT AT05781794T patent/ATE377703T1/en not_active IP Right Cessation
- 2005-06-20 ES ES05781794T patent/ES2294735T3/en active Active
- 2005-06-20 WO PCT/FR2005/050465 patent/WO2006005868A2/en active IP Right Grant
- 2005-06-20 US US11/571,255 patent/US7775033B2/en not_active Expired - Fee Related
- 2005-06-20 PT PT05781794T patent/PT1766216E/en unknown
- 2005-06-20 EP EP05781794A patent/EP1766216B1/en not_active Not-in-force
- 2005-06-20 DE DE602005003229T patent/DE602005003229T2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2006005868A3 * |
Also Published As
Publication number | Publication date |
---|---|
DE602005003229D1 (en) | 2007-12-20 |
ATE377703T1 (en) | 2007-11-15 |
US20080059040A1 (en) | 2008-03-06 |
ES2294735T3 (en) | 2008-04-01 |
WO2006005868A2 (en) | 2006-01-19 |
FR2872207A1 (en) | 2005-12-30 |
PT1766216E (en) | 2007-12-27 |
DE602005003229T2 (en) | 2008-08-28 |
WO2006005868A3 (en) | 2007-04-05 |
EP1766216B1 (en) | 2007-11-07 |
FR2872207B1 (en) | 2006-09-29 |
US7775033B2 (en) | 2010-08-17 |
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