[go: up one dir, main page]

DE112006002008A5 - Method for raising the exhaust gas temperature in an internal combustion engine - Google Patents

Method for raising the exhaust gas temperature in an internal combustion engine Download PDF

Info

Publication number
DE112006002008A5
DE112006002008A5 DE112006002008T DE112006002008T DE112006002008A5 DE 112006002008 A5 DE112006002008 A5 DE 112006002008A5 DE 112006002008 T DE112006002008 T DE 112006002008T DE 112006002008 T DE112006002008 T DE 112006002008T DE 112006002008 A5 DE112006002008 A5 DE 112006002008A5
Authority
DE
Germany
Prior art keywords
raising
exhaust gas
combustion engine
internal combustion
gas temperature
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
Application number
DE112006002008T
Other languages
German (de)
Other versions
DE112006002008B4 (en
Inventor
Dietrich Meyerdierks
Friedrich Köskemeier
Alois Fürhapter
Dirk Denger
Aleksander Pinter
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.)
AVL List GmbH
Original Assignee
AVL List GmbH
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
Priority claimed from AT0134705A external-priority patent/AT500441A3/en
Priority claimed from AT0019806A external-priority patent/AT500991B1/en
Application filed by AVL List GmbH filed Critical AVL List GmbH
Publication of DE112006002008A5 publication Critical patent/DE112006002008A5/en
Application granted granted Critical
Publication of DE112006002008B4 publication Critical patent/DE112006002008B4/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/008Controlling each cylinder individually
    • F02D41/0087Selective cylinder activation, i.e. partial cylinder operation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N11/00Monitoring or diagnostic devices for exhaust-gas treatment apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00Exhaust or silencing apparatus characterised by constructional features
    • F01N13/011Exhaust or silencing apparatus characterised by constructional features having two or more purifying devices arranged in parallel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00Exhaust or silencing apparatus characterised by constructional features
    • F01N13/08Other arrangements or adaptations of exhaust conduits
    • F01N13/10Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F01N13/107More than one exhaust manifold or exhaust collector
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021Exhaust 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002Controlling intake air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/008Controlling each cylinder individually
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/021Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/024Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
    • F02D41/025Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus by changing the composition of the exhaust gas, e.g. for exothermic reaction on exhaust gas treating apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/14Introducing closed-loop corrections
    • F02D41/1438Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1466Introducing 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06Investigating concentration of particle suspensions
    • G01N15/0656Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2560/00Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/05Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a particulate sensor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2560/00Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/14Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2900/00Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/04Methods of control or diagnosing
    • F01N2900/0422Methods of control or diagnosing measuring the elapsed time
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002Controlling intake air
    • F02D2041/001Controlling intake air for engines with variable valve actuation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D2200/00Input parameters for engine control
    • F02D2200/02Input parameters for engine control the parameters being related to the engine
    • F02D2200/08Exhaust gas treatment apparatus parameters
    • F02D2200/0812Particle filter loading
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/008Controlling each cylinder individually
    • F02D41/0082Controlling each cylinder individually per groups or banks
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/021Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027Introducing 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
    • F02D41/029Introducing 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/14Introducing closed-loop corrections
    • F02D41/1438Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1439Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
    • F02D41/1441Plural sensors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/40Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Exhaust Gas After Treatment (AREA)
DE112006002008.0T 2005-08-11 2006-08-07 Method for raising the exhaust gas temperature in an internal combustion engine Expired - Fee Related DE112006002008B4 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
AT0134705A AT500441A3 (en) 2005-08-11 2005-08-11 METHOD FOR DETERMINING THE LOADING STATE OF A PARTICULATE FILTER OF AN INTERNAL COMBUSTION ENGINE
ATA1347/2005 2005-08-11
ATA198/2006 2006-02-09
AT0019806A AT500991B1 (en) 2006-02-09 2006-02-09 Exhaust gas temperature increasing method for internal combustion engine, involves operating set of cylinders with high fuel to air ratio, and operating another set of cylinders is operated with low fuel to air ratio
PCT/AT2006/000333 WO2007016713A2 (en) 2005-08-11 2006-08-07 Method for increasing the exhaust gas temperature for an internal combustion engine

Publications (2)

Publication Number Publication Date
DE112006002008A5 true DE112006002008A5 (en) 2008-07-03
DE112006002008B4 DE112006002008B4 (en) 2022-07-07

Family

ID=37036832

Family Applications (1)

Application Number Title Priority Date Filing Date
DE112006002008.0T Expired - Fee Related DE112006002008B4 (en) 2005-08-11 2006-08-07 Method for raising the exhaust gas temperature in an internal combustion engine

Country Status (2)

Country Link
DE (1) DE112006002008B4 (en)
WO (1) WO2007016713A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009053269A1 (en) 2009-11-13 2011-05-26 Bayerische Motoren Werke Aktiengesellschaft Internal combustion engine
DE102010003143B4 (en) * 2010-03-23 2014-08-28 Ford Global Technologies, Llc Method for operating a spark-ignited internal combustion engine and internal combustion engine for carrying out such a method
WO2014183065A1 (en) * 2013-05-09 2014-11-13 Pinnacle Engines, Inc. Low temperature catalyst light-off
WO2015013696A1 (en) 2013-07-26 2015-01-29 Pinnacle Engines, Inc. Early exhaust valve opening for improved catalyst light off
JP7272924B2 (en) 2019-10-09 2023-05-12 トヨタ自動車株式会社 Vehicle and its control method
JP7480679B2 (en) * 2020-11-11 2024-05-10 トヨタ自動車株式会社 Control device for internal combustion engine
JP7444028B2 (en) 2020-11-11 2024-03-06 トヨタ自動車株式会社 Internal combustion engine control device
JP7444104B2 (en) * 2021-02-24 2024-03-06 トヨタ自動車株式会社 Internal combustion engine control device

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56113009A (en) 1980-02-08 1981-09-05 Suzuki Motor Co Ltd Exhaust gas purifier for internal combustion engine
DD219587A1 (en) 1983-11-29 1985-03-06 Smab Forsch Entw Rat PROCESS FOR EXHAUST GAS MONITORING
JPH0586848A (en) 1991-09-25 1993-04-06 Toyota Motor Corp Exhaust emission control device for internal combustion engine
DE4142959A1 (en) 1991-12-24 1993-07-01 Till Keesmann Probe for particle sensor
JP3464698B2 (en) * 1994-01-25 2003-11-10 本田技研工業株式会社 Catalyst activation device for multi-cylinder internal combustion engine
DE4445779A1 (en) * 1994-12-21 1996-06-27 Fev Motorentech Gmbh & Co Kg Method for controlling a multi-cylinder internal combustion engine in the cold start and warm-up phase
US5758493A (en) * 1996-12-13 1998-06-02 Ford Global Technologies, Inc. Method and apparatus for desulfating a NOx trap
DE19740482A1 (en) 1997-09-15 1999-03-18 Audi Ag Method for operating a multi-cylinder internal combustion engine with direct injection
DE19830974B4 (en) * 1998-07-10 2005-11-03 Fev Motorentechnik Gmbh Cold start procedure for a throttle-free multi-cylinder piston internal combustion engine
FR2798703B1 (en) 1999-09-20 2001-12-07 Renault METHOD FOR HEATING A CATALYST EQUIPPED WITH AN INTERNAL COMBUSTION ENGINE WITH DIRECT FUEL INJECTION COMPRISING SEVERAL CYLINDERS
US6324835B1 (en) * 1999-10-18 2001-12-04 Ford Global Technologies, Inc. Engine air and fuel control
JP3552617B2 (en) 1999-11-30 2004-08-11 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
JP3803220B2 (en) 1999-12-16 2006-08-02 株式会社日立製作所 Engine system control device with electromagnetically driven intake and exhaust valves
DE10050473A1 (en) 2000-10-12 2002-06-20 Fev Motorentech Gmbh Method for rapidly raising temperature of exhaust gas catalytic converter on piston internal combustion engine by combustion of rich and lean mixture exhaust products
FR2817291B1 (en) * 2000-11-27 2003-01-24 Renault PROCESS FOR MANAGING THE OPERATION OF A MULTI-CYLINDER INTERNAL COMBUSTION ENGINE OF A VEHICLE EQUIPPED WITH A CATALYTIC EXHAUST SYSTEM
US6467259B1 (en) 2001-06-19 2002-10-22 Ford Global Technologies, Inc. Method and system for operating dual-exhaust engine
WO2003048533A1 (en) * 2001-11-30 2003-06-12 Delphi Technologies, Inc. Engine cylinder deactivation to improve the performance of exhaust emission control systems
US7134423B2 (en) 2002-11-01 2006-11-14 Visteon Global Technologies, Inc. Ignition diagnosis and combustion feedback control system using an ionization signal

Also Published As

Publication number Publication date
DE112006002008B4 (en) 2022-07-07
WO2007016713A3 (en) 2007-04-26
WO2007016713A2 (en) 2007-02-15

Similar Documents

Publication Publication Date Title
DE502004007683D1 (en) Charged internal combustion engine and method for operating such an internal combustion engine
DE60131590D1 (en) Method for controlling the exhaust gas temperature in an internal combustion engine
DE602006014642D1 (en) Method for operating an internal combustion engine
DE602005012177D1 (en) Device for controlling the exhaust emissions of an internal combustion engine
DE602005024472D1 (en) Method and device for starting an internal combustion engine
DE502004008492D1 (en) Charged internal combustion engine and method for operating such an internal combustion engine
DE502005005533D1 (en) METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE
DE602004028978D1 (en) Apparatus and method for estimating the internal exhaust gas recirculation amount in an internal combustion engine
DE602005000814D1 (en) Device for exhaust gas purification for an internal combustion engine
ATA6602004A (en) METHOD FOR STARTING AN INTERNAL COMBUSTION ENGINE
DE112006003672A5 (en) Method for controlling the fuel-air mixture in an internal combustion engine
DE502004010710D1 (en) METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE WITH EXHAUST GAS CLEANING SYSTEM
DE112006002008A5 (en) Method for raising the exhaust gas temperature in an internal combustion engine
DE502006007816D1 (en) Method for measuring exhaust gas in internal combustion engines
DE502006000393D1 (en) Method for avoiding unwanted NO2 emissions in internal combustion engines
DE502005005981D1 (en) Method and device for operating an internal combustion engine
DE502006000723D1 (en) Method for increasing the start-reproducibility during start-stop operation of an internal combustion engine
DE112007000207A5 (en) Method for controlling the air system in an internal combustion engine
DE602005024517D1 (en) Method for controlling the indicated torque for internal combustion engines
DE602005007881D1 (en) Method for monitoring the combustion stability of an internal combustion engine
DE602005010273D1 (en) METHOD FOR CONTROLLING THE IGNITION TIME IN INTERNAL COMBUSTION ENGINES
DE112005001975A5 (en) Method for operating an internal combustion engine
DE502005007438D1 (en) METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE
DE502005005022D1 (en) Method for controlling an internal combustion engine
FI20060658L (en) Method for operating an internal combustion engine and internal combustion engine

Legal Events

Date Code Title Description
R012 Request for examination validly filed

Effective date: 20130802

R016 Response to examination communication
R016 Response to examination communication
R018 Grant decision by examination section/examining division
R020 Patent grant now final
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee