IN2012DE01068A - - Google Patents

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Publication number
IN2012DE01068A
IN2012DE01068A IN1068DE2012A IN2012DE01068A IN 2012DE01068 A IN2012DE01068 A IN 2012DE01068A IN 1068DE2012 A IN1068DE2012 A IN 1068DE2012A IN 2012DE01068 A IN2012DE01068 A IN 2012DE01068A
Authority
IN
India
Prior art keywords
reducing agent
reducing
biased
actuated
combustion engine
Prior art date
Application number
Inventor
Max Leonhard
Rainer Gansel
Peer Breusing
Klaus-Dieter Zwing
Original Assignee
Bosch Gmbh Robert
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 Bosch Gmbh Robert filed Critical Bosch Gmbh Robert
Publication of IN2012DE01068A publication Critical patent/IN2012DE01068A/en

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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
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/08—Adding substances to exhaust gases with prior mixing of the substances with a gas, e.g. air
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/18—Parameters used for exhaust control or diagnosing said parameters being related to the system for adding a substance into the exhaust
    • F01N2900/1806—Properties of reducing agent or dosing system
    • F01N2900/1808—Pressure
    • 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
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The present subject matter relates to an apparatus for reducing NOx in the exhaust gas of an internal combustion engine having an exhaust system (28). In this a reducing agent (50), prepared particularly in the form of a spray mist (30), is introduced. A mixing valve (40) actuated by a pressure of the reducing agent (50) is disposed in a metering unit (24) biased with compressed air (52) and with reducing agent (50).
IN1068DE2012 2011-05-06 2012-04-09 IN2012DE01068A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011075446A DE102011075446A1 (en) 2011-05-06 2011-05-06 Apparatus for reduction of nitrous oxides in exhaust gas of e.g. diesel engine, has mixing valve that is actuated by metering unit when reducing agent pressure acts on metering unit, to mix pressurized air and reducing agent

Publications (1)

Publication Number Publication Date
IN2012DE01068A true IN2012DE01068A (en) 2015-07-31

Family

ID=47019455

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1068DE2012 IN2012DE01068A (en) 2011-05-06 2012-04-09

Country Status (4)

Country Link
CN (1) CN102767412B (en)
DE (1) DE102011075446A1 (en)
FR (1) FR2974846B1 (en)
IN (1) IN2012DE01068A (en)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2125064U (en) * 1992-05-16 1992-12-16 李谦 Oil and gas mixing valve
JP2001173431A (en) * 1999-12-17 2001-06-26 Isuzu Motors Ltd Exhaust emission control system
DE19963394A1 (en) * 1999-12-28 2001-07-05 Bosch Gmbh Robert Aerosol generator for exhaust processing in IC engines has secondary air supply elements for effective fluid-air-mixture generation and quicker aerosol transport
DE10040571A1 (en) * 2000-08-18 2002-02-28 Bosch Gmbh Robert Device for producing a reducing agent-air mixture
DE10116214A1 (en) * 2001-03-30 2002-10-10 Bosch Gmbh Robert Device for the aftertreatment of exhaust gases from an internal combustion engine
DE10141431A1 (en) * 2001-08-23 2003-03-20 Fev Motorentech Gmbh Piston engine with pressure relief gas outlet valves
WO2005035969A1 (en) * 2003-09-18 2005-04-21 A. Kayser Automotive Systems Gmbh Filter unit and valve for a fuel supply system
DE502004005576D1 (en) * 2004-12-30 2008-01-03 Grundfos Nonox As Device for generating a reducing agent-air mixture
DE602006002275D1 (en) * 2005-04-13 2008-09-25 Grundfos Nonox As MIXING DEVICE FOR MIXING OF UREA AND AIR
JP2008020039A (en) * 2006-07-14 2008-01-31 Toyota Motor Corp Pressure control valve
DE102007020965A1 (en) * 2007-05-04 2008-11-06 Robert Bosch Gmbh Device for the metered injection of an exhaust gas aftertreatment agent-air mixture in an exhaust system

Also Published As

Publication number Publication date
CN102767412B (en) 2017-05-17
CN102767412A (en) 2012-11-07
FR2974846B1 (en) 2016-08-19
FR2974846A1 (en) 2012-11-09
DE102011075446A1 (en) 2012-11-08

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