EP2004972A1 - Procede de reduction des emissions de suie par les moteurs a combustion interne - Google Patents

Procede de reduction des emissions de suie par les moteurs a combustion interne

Info

Publication number
EP2004972A1
EP2004972A1 EP07703856A EP07703856A EP2004972A1 EP 2004972 A1 EP2004972 A1 EP 2004972A1 EP 07703856 A EP07703856 A EP 07703856A EP 07703856 A EP07703856 A EP 07703856A EP 2004972 A1 EP2004972 A1 EP 2004972A1
Authority
EP
European Patent Office
Prior art keywords
humidity
intake air
calculated
intake
exhaust gas
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.)
Withdrawn
Application number
EP07703856A
Other languages
German (de)
English (en)
Inventor
Hong Zhang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2004972A1 publication Critical patent/EP2004972A1/fr
Withdrawn legal-status Critical Current

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
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
    • 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
    • F02D41/1466—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 a soot concentration or content
    • F02D41/1467—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 a soot concentration or content with determination means using an estimation
    • 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
    • F02D2200/0418—Air humidity
    • 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 reducing soot emission in internal combustion engines.
  • DE 19750496 A1 discloses a method for determining the air taken in by an internal combustion engine and a sensor for an internal combustion engine.
  • the method shown there further forms conventional methods in which the air mass drawn in by an internal combustion engine is written by means of an air mass meter.
  • Combustion process relevant data such as the temperature or the intake manifold pressure for calculating injection times and the like processed.
  • a disadvantage of this method is that when determining the air mass size changing large, which affect the air mass, are not included.
  • a mass that changes the air mass is for example the humidity.
  • the air mass flow detected by the air mass meter is falsified due to the humidity in that, in addition to the combustible air in the internal combustion engine, water vapor is simultaneously detected which can not be burned and therefore leads to very disadvantageous changes in the emission values.
  • a device for determining the state of a Abgasruckchtungssystems for accurately determining the state of a Abgasruckchtungssystems comprising a Abgasruckschreibungs trimlass is provided.
  • the apparatus for determining the condition includes a humidity sensor disposed in the exhaust gas discharge passage for detecting a humidity within the exhaust gas discharge passage. With the device, the moisture content of the returned exhaust gas is determined, wherein based on the determined moisture, the state of the Abgasruckchtungssystems comprising the
  • EGR rate is not applied so high to reduce nitrogen oxides so that soot emission does not increase dramatically as the intake air humidity in the field increases.
  • it is necessary to reduce this reserve, which has hitherto been sufficient.
  • the object of the invention is to comply with the soot emission level of a vehicle regardless of the environmental conditions in the field in order not to exceed the limit in systems without particulate filter.
  • Another task is the
  • Ambient temperature can be determined and taken into account in the regulation of Abgasruckbowung.
  • the information about the humidity can come from a sensor (for example in the air conditioning system, the instrument cluster or the navigation system or other sensors). From the calculated or calculated moisture content and the intake air temperature, the proportion of water in the
  • the base exhaust gas recirculation rate is corrected so that, while maintaining the nitrogen oxide emission value, the particulate emission does not increase with changes in humidity.
  • an exhaust gas recirculation rate is output and applied.
  • the exhaust gas recirculation rate is reduced based on calculation models stored in characteristics. If the water content is reduced by moisture relative to the reference value, the Abgasruckuhrungsrate is increased by a characteristic model.
  • the value of lambda is used to adapt the measured air mass and / or the exhaust gas flow and / or fuel mass.
  • the water content is taken into account via the information relating to the humidity and the intake air temperature.
  • the measured lambda value lam is compared in real terms with the calculated lambda value lam_cal and the ratio of the two or the difference is used as the input for the adaptation.
  • the lambda value can be calculated as follows:
  • lam cal can be calculated as follows:
  • Lam_cal MAF / (LST * K_hum * MFF)
  • K hum factor depending on water content (depending on humidity and intake air temperature)
  • the emission robustness and the accuracy of the adaptation via the air injection phase by the inclusion of the information relating to the humidity is considerably improved.
  • the nitrogen oxide emission are maintained with low particle emissions and reduces the consumption of fuel for filter regeneration.
  • the corresponding humidity sensors can be arranged both away from the internal combustion engine and in the intake region of the internal combustion engine before or in the intake tract.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

L'invention concerne un procédé de réduction des émissions de suie par les moteurs à combustion interne, dans lequel l'humidité et la température de l'air aspiré sont déterminées, la teneur en eau présente dans l'air aspiré est calculée à partir de ces paramètres, un taux de base de recyclage des gaz d'échappement étant prévu dans le conduit d'aspiration et un taux de recyclage des gaz d'échappement pour chaque fonctionnement (vitesse de rotation et quantité de carburant) étant prédéterminé pour une humidité de référence et une température de référence de l'air aspiré. En cas de différence entre la teneur en eau dans l'air aspiré et la valeur de référence, des modifications du taux de recyclage des gaz d'échappement sont définies sous la forme de lignes caractéristiques le taux de recyclage des gaz d'échappement étant réduit sur base des lignes caractéristiques lorsque la teneur en eau dans l'air aspiré augmente par rapport à la valeur de référence.
EP07703856A 2006-04-05 2007-01-15 Procede de reduction des emissions de suie par les moteurs a combustion interne Withdrawn EP2004972A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006015970A DE102006015970B4 (de) 2006-04-05 2006-04-05 Verfahren zur Reduzierung von Ruß-Emissionen bei Brennkraftmaschinen
PCT/EP2007/050340 WO2007113014A1 (fr) 2006-04-05 2007-01-15 Procede de reduction des emissions de suie par les moteurs a combustion interne

Publications (1)

Publication Number Publication Date
EP2004972A1 true EP2004972A1 (fr) 2008-12-24

Family

ID=37953744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07703856A Withdrawn EP2004972A1 (fr) 2006-04-05 2007-01-15 Procede de reduction des emissions de suie par les moteurs a combustion interne

Country Status (4)

Country Link
EP (1) EP2004972A1 (fr)
CN (1) CN101466931A (fr)
DE (1) DE102006015970B4 (fr)
WO (1) WO2007113014A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8121774B2 (en) * 2009-02-06 2012-02-21 Caterpillar Inc. Exhaust gas recirculation system and method of operating such system
KR101283144B1 (ko) * 2011-05-04 2013-07-05 기아자동차주식회사 배기가스 응축수 제어방법 및 이를 적용한 배기가스재순환시스템
JP6028795B2 (ja) * 2012-05-09 2016-11-16 トヨタ自動車株式会社 内燃機関の制御装置
US9322312B2 (en) * 2014-03-05 2016-04-26 GM Global Technology Operations LLC Ambient humidity and temperature correction to particulate filter soot rate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19727597C1 (de) * 1997-06-28 1998-08-06 Volkswagen Ag Verfahren und Vorrichtung zur Steuerung von Brennkraftmaschinen
US6062204A (en) * 1998-10-15 2000-05-16 Ford Global Technologies, Inc. Engine control system and method with atmospheric humidity compensation
US6725848B2 (en) * 2002-01-18 2004-04-27 Detroit Diesel Corporation Method of controlling exhaust gas recirculation system based upon humidity
US6575148B1 (en) * 2002-02-22 2003-06-10 Cummins, Inc. Humidity compensation system for an internal combustion engine
JP4144251B2 (ja) * 2002-05-09 2008-09-03 トヨタ自動車株式会社 内燃機関における排気環流の制御
DE10332608B3 (de) * 2003-07-17 2005-05-04 Siemens Ag Verfahren zum Regeln einer Brennkraftmaschine sowie eine Vorrichtung zum Regeln einer Brennkraftmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007113014A1 *

Also Published As

Publication number Publication date
WO2007113014A1 (fr) 2007-10-11
DE102006015970B4 (de) 2008-06-05
CN101466931A (zh) 2009-06-24
DE102006015970A1 (de) 2007-10-11

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