ClassID:

138283

F01N2900/1621 - CPC Classification

Classification description:

Details of electrical control or of the monitoring of the exhaust gas treating apparatus; Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst Catalyst conversion efficiency

Recent Application in this class:
#1
20260098491
2026-04-09

SYSTEMS AND METHODS FOR DOSER BIAS DETECTION IN AFTERTREATMENT SYSTEMS

#2
20250297564
2025-09-25

SYSTEMS AND METHODS FOR MEASURING EXHAUST GAS SPECIES AND CATALYST NOX STORAGE FOR CATALYST-RELATED CONTROLS AND DIAGNOSTICS

#3
20250207521
2025-06-26

Method for Exhaust Gas After-Treatment of an Internal Combustion Engine Having at Least One SCR Catalyst

#4
20250198322
2025-06-19

DUAL LEG AFTERTREATMENT SYSTEM

#5
20250092807
2025-03-20

AFTERTREATMENT HEATER MANAGEMENT FOR EFFICIENT THERMAL MANAGEMENT

#6
20240309790
2024-09-19

Purification system

#7
20240209767
2024-06-27

Method for calculating reaction heat in an exhaust system

#8
20240200481
2024-06-20

Exhaust after-treatment in heavy-duty motor vehicles

#9
20240159180
2024-05-16

Dual leg aftertreatment system

#10
20240077009
2024-03-07

SYSTEMS AND METHODS FOR MEASURING EXHAUST GAS SPECIES AND SCR CATALYST NOX STORAGE FOR SCR-RELATED CONTROLS AND DIAGNOSTICS

#11
20230392532
2023-12-07

Exhaust after-treatment in heavy-duty motor vehicles

#12
20230374927
2023-11-23

Adaption of a urea deposit model value

#13
20230250744
2023-08-10

Aftertreatment system

#14
20230235692
2023-07-27

Method of diagnosing an engine system

#15
20230220793
2023-07-13

Method for ascertaining an exhaust gas composition of an exhaust gas of an internal combustion engine

#16
20230194098
2023-06-22

Exhaust gas purification device for gas turbine engine

#17
20230193798
2023-06-22

Aftertreatment heater management for efficient thermal management

#18
20230034184
2023-02-02

Methods for evaluating diesel exhaust fluid quality

#19
20220403793
2022-12-22

Internal combustion engine with exhaust gas aftertreatment and control of the nitrogen oxide emissions

#20
20220403768
2022-12-22

Method and system for diagnosing oxidation of a substance in an exhaust gas stream

#21
20220282679
2022-09-08

Apparatus and method for controlling a vehicle action

#22
20220282652
2022-09-08

Apparatus and method for controlling a vehicle action

#23
20220281752
2022-09-08

JMZ-12, a disordered AEI/CHA family of zeolites, its synthesis and use

#24
20220275742
2022-09-01

Method for purifying exhaust gas and electronic device therefor

#25
20220275741
2022-09-01

Systems and methods for implementing corrections to a reductant delivery system in an exhaust aftertreatment system of an internal combustion engine

#26
20220090529
2022-03-24

Systems and methods for implementing corrections to a reductant delivery system in an exhaust aftertreatment system of an internal combustion engine

#27
20220074332
2022-03-10

Method for controlling exhaust aftertreatment system for vehicles

#28
20220049639
2022-02-17

Methods for making and using SCR catalyst on-board diagnostic limit parts

#29
20220025800
2022-01-27

Methods for evaluating diesel exhaust fluid quality

#30
20220025798
2022-01-27

Methods for diagnostics and operation of an emissions aftertreatment system

#31
20210372309
2021-12-02

Method for adapting an amount of reductant for controlling the nitrogen oxide pollution of gases in a motor exhaust line

#32
20210302401
2021-09-30

Gas sensor system

#33
20210215075
2021-07-15

Method for managing the lightoff of a pollution-control catalytic converter

#34
20210115834
2021-04-22

Method of generating vehicle control data, vehicle control device, and vehicle control system

#35
20210108549
2021-04-15

Control device controlling CO recovery device

#36
20210087958
2021-03-25

Work vehicle including diesel particulate filter (DPF) regeneration control

#37
20210033015
2021-02-04

Methods for making and using SCR catalyst on-board diagnostic limit parts

#38
20210025307
2021-01-28

Methods and devices for controlling urea mixers to reduce NOx emission from combustion engines

#39
20200400088
2020-12-24

SYSTEMS AND METHODS FOR CONTROLLING AN ENGINE BASED ON AFTERTREATMENT SYSTEM CHARACTERISTICS

#40
20200370454
2020-11-26

Diagnostic methods for a high efficiency exhaust aftertreatment system

#41
20200232363
2020-07-23

Method for operating an exhaust gas post treatment system of a diesel engine and exhaust gas post treatment system

#42
20200191034
2020-06-18

Apparatus and method for controlling exhaust gas purification

#43
20200173327
2020-06-04

Methods for operating and diagnosing internal combustion engine exhaust gas treatment systems

#44
20200131971
2020-04-30

Method for monitoring the effectiveness of a three-way catalytic converter of a gasoline engine

#45
20190353065
2019-11-21

Method for monitoring components in an exhaust aftertreatment system and engine arrangement including exhaust aftertreatment system monitoring arrangement

#46
20190345861
2019-11-14

Method and system for controlling an ammonia coverage degree profile

#47
20190316503
2019-10-17

Selective catalytic reduction system

#48
20190292970
2019-09-26

Catalyst state estimation apparatus, catalyst state estimation method with information processing apparatus, and non-transitory recording medium in which program is stored

#49
20190271248
2019-09-05

Exhaust gas purification apparatus for internal combustion engine

#50
20190195103
2019-06-27

Exhaust gas purification apparatus for an internal combustion engine

#51
20190186316
2019-06-20

Exhaust gas purification apparatus for internal combustion engine

#52
20190128162
2019-05-02

Reactivation control apparatus and method

#53
20190048775
2019-02-14

Exhaust purification system of internal combustion engine

#54
20190048770
2019-02-14

Non-thermal plasma/ozone-assisted catalytic system and use in exhaust systems

#55
20190024557
2019-01-24

Methods for controlling and monitoring oxidation catalyst devices

#56
20180347492
2018-12-06

Controlling device for purifying exhaust gas purifying

#57
20180340459
2018-11-29

Apparatus for diagnosing deterioration of NOx storage-reduction catalyst

#58
20180266294
2018-09-20

Model predictive control for multi-can selective catalytic reduction system

#59
20180266293
2018-09-20

Exhaust gas cleaning system and monitoring method of the same

#60
20180258873
2018-09-13

Systems and methods for controlling an engine based on aftertreatment system characteristics

#61
20180258811
2018-09-13

Method and system for a first and a second supply of additive to an exhaust gas stream from an internal combustion engine

#62
20180252133
2018-09-06

Exhaust gas purification apparatus for an internal combustion engine

#63
20180223744
2018-08-09

Exhaust purifying device and working vehicle

#64
20180209873
2018-07-26

Catalyst degradation diagnostic method and catalyst degradation diagnostic system

#65
20180209319
2018-07-26

Method for urea conversion efficiency measurement

#66
20180163591
2018-06-14

Exhaust gas control apparatus for internal combustion engine

#67
20180163590
2018-06-14

Exhaust gas purification system and controlling method thereof

#68
20180142593
2018-05-24

Model predictive control for multi-can selective catalytic reduction system

#69
20180073413
2018-03-15

NOx occlusion amount estimating device and NOx occlusion amount estimating method

#70
20180071681
2018-03-15

Method for controlling an exhaust gas treatment system

#71
20180038260
2018-02-08

Methods of using gas sensors

#72
20170268412
2017-09-21

Method and unit for operating a fuel metering system in an internal combustion engine

#73
20170234184
2017-08-17

System and method for exhaust treatment

#74
20170152784
2017-06-01

Fault diagnosis apparatus for exhaust gas purification system

#75
20170152781
2017-06-01

System and method to improve aftertreatment in an internal combustion engine

#76
20170138890
2017-05-18

Gas sensor control method

#77
20170138244
2017-05-18

Methods to adapt reductant injection controls for catalyst aging

#78
20170138237
2017-05-18

Method and apparatus to control reductant injection into an exhaust gas feedstream

#79
20170096920
2017-04-06

EXHAUST PURIFICATION CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

#80
20170044946
2017-02-16

Method of operating an automotive system

#81
20170037758
2017-02-09

Ammonia sensor control, with NOfeedback, of an SCR aftertreatment system

#82
20160376972
2016-12-29

Exhaust control system for internal combustion engine

#83
20160369682
2016-12-22

Exhaust gas post-processing apparatus and control method therefor

#84
20160356673
2016-12-08

Method and system of testing the proper functioning of a catalyzed particulate filter of an internal combustion engine

#85
20160326930
2016-11-10

Exhaust purification system for internal combustion engine

#86
20160326928
2016-11-10

System and method of isolating component failures in an exhaust aftertreatment system

#87
20160319725
2016-11-03

Detection of an improper reductant in a storage tank

#88
20160312719
2016-10-27

Method for diagnosing an exhaust gas catalytic converter, and motor vehicle

#89
20160290201
2016-10-06

Techniques for control of an SCR aftertreatment system in response to an ammonia slip condition

#90
20160215669
2016-07-28

Abnormality diagnosis device for a sensor

#91
20160208668
2016-07-21

Diagnostic apparatus for exhaust gas purification apparatus

#92
20160161371
2016-06-09

Catalyst deterioration diagnosis method

#93
20160161370
2016-06-09

Catalyst deterioration diagnosis system and catalyst deterioration diagnosis method

#94
20160160730
2016-06-09

Catalyst deterioration diagnosis method

#95
20160146080
2016-05-26

Method and apparatus for monitoring fluid reductant for internal combustion engine exhaust

#96
20160123205
2016-05-05

Method for operating a driving system and corresponding driving system

#97
20160097313
2016-04-07

Engine control method for maintaining performance of oxidation catalyst

#98
20160076423
2016-03-17

Diagnostic device for urea water supply system

#99
20160053648
2016-02-25

Method and internal combustion engine arrangement for regenerating an exhaust after-treatment device

#100
20160003123
2016-01-07

Electronic control module for an internal combustion engine

#101
20160003119
2016-01-07

Device and method for reducing unwanted emissions from an engine at start of said engine

#102
20160001275
2016-01-07

Exhaust gas purifying catalyst and exhaust gas purification method using same

#103
20150361846
2015-12-17

System variation adaption for feed-forward controller

#104
20150361845
2015-12-17

Feed-back for closed-loop selective catalytic reduction control

#105
20150337707
2015-11-26

Abnormality diagnosis apparatus for exhaust gas purification apparatus

#106
20150315952
2015-11-05

Method, system, and apparatus for diagnosing an exhaust aftertreatment component

#107
20150315951
2015-11-05

Method for diagnosing an exhaust gas catalytic converter, diagnosis device and motor vehicle having such a device

#108
20150315950
2015-11-05

Abnormality detection device for exhaust gas purification apparatus

#109
20150314239
2015-11-05

Exhaust gas control apparatus for internal combustion engine

#110
20150308322
2015-10-29

Failure diagnosis apparatus for exhaust gas control apparatus

#111
20150292383
2015-10-15

Exhaust aftertreatement system with catalytic deactivation monitoring

#112
20150275803
2015-10-01

Closed loop NOreference management for DPF regeneration based on engine out particulate matter variation controller

#113
20150275801
2015-10-01

Exhaust gas purification system and exhaust gas purification method

#114
20150275737
2015-10-01

Method for monitoring the formation of nitrogen dioxide at an oxidation catalytic converter, and exhaust system

#115
20150275733
2015-10-01

Failure determination system of exhaust gas purification apparatus

#116
20150275730
2015-10-01

Systems and methods to reduce reductant consumption in exhaust aftertreament systems

#117
20150247435
2015-09-03

Systems, methods, and apparatus for reductant dosing in an SCR aftertreatment system

#118
20150219032
2015-08-06

Diesel engine control apparatus

#119
20150209730
2015-07-30

Method and system for estimating reagent quality

#120
20150209729
2015-07-30

Method of estimating hydrocarbon storage in a catalytic device

#121
20150176512
2015-06-25

Method to diagnose SCR catalyst

#122
20150167526
2015-06-18

Aftertreatment system having two SCR catalysts

#123
20150165379
2015-06-18

Exhaust gas treatment apparatus functionality check

#124
20150121854
2015-05-07

Exhaust gas purification apparatus for internal combustion engine

#125
20150118112
2015-04-30

SCR filter washcoat thickness efficiency compensation system

#126
20150113960
2015-04-30

Leak detection and mitigation in reductant delivery systems

#127
20150113958
2015-04-30

Method for feeding reducing agent and motor vehicle and stationary installation in which the method is performed

#128
20150096287
2015-04-09

Multi-stage SCR control and diagnostic system

#129
20150096283
2015-04-09

Method for monitoring components in an exhaust after treatment system, an exhaust after treatment system, and a controller for an exhaust after treatment system

#130
20150075143
2015-03-19

System, methods, and apparatus for low temperature dosing in diesel exhaust systems

#131
20150047328
2015-02-19

Vehicle and a method of updating efficiency of a selective catalytic reduction filter of an exhaust treatment system of the vehicle

#132
20150047325
2015-02-19

Device and method for cleaning of an SCR system

#133
20150047318
2015-02-19

Supervisory model predictive selective catalytic reduction control method

#134
20150041334
2015-02-12

Gas sensor control apparatus

#135
20150041320
2015-02-12

Gas sensor control apparatus

#136
20150040543
2015-02-12

Method and system for identifying a source of nitrogen oxide reduction inefficiency

#137
20150033706
2015-02-05

Method and apparatus for determining the efficiency of an exhaust gas purification device

#138
20150033705
2015-02-05

Exhaust fluid dosing control system and method

#139
20150023854
2015-01-22

Exhaust gas post-processing apparatus and control method thereof

#140
20140360165
2014-12-11

Selective catalytic reduction device monitoring system

#141
20140324322
2014-10-30

Engine output control device for a construction machine

#142
20140301925
2014-10-09

Enhanced real-time ammonia slip detection

#143
20140298776
2014-10-09

Exhaust injection muffler

#144
20140260201
2014-09-18

Method, system, and apparatus for diagnosing an exhaust aftertreatment component

#145
20140208722
2014-07-31

Exhaust gas purifying apparatus for internal combustion engine

#146
20140060007
2014-03-06

Apparatus and method for onboard performance monitoring of oxidation catalyst

#147
20140050623
2014-02-20

Apparatus for detecting deterioration of NOx selective reduction catalyst

#148
20140030810
2014-01-30

Method for the dynamic detection of leakages for SCR catalytic converters

#149
20140013725
2014-01-16

Kinetics-based SCR control model improvement

#150
20130305695
2013-11-21

Aftertreatment system having two SCR catalysts

#151
20130283767
2013-10-31

OXIDATION CATALYST MONITORING

#152
20130259752
2013-10-03

Exhaust purification system of internal combustion engine

#153
20130245919
2013-09-19

LOW DIMENSIONAL THREE WAY CATALYST MODEL FOR CONTROL AND DIAGNOSTICS

#154
20130232958
2013-09-12

System and method to manage SCR catalyst NO/NOratio

#155
20130202506
2013-08-08

Method for monitoring an SCR catalyst

#156
20130139490
2013-06-06

System and method for determining an exhaust system condition

#157
20130104637
2013-05-02

Exhaust treatment methods and systems

#158
20130060454
2013-03-07

Method and device for controlling an internal combustion engine

#159
20130052086
2013-02-28

Exhaust purification system of internal combustion engine

#160
20130019588
2013-01-24

Method of controlling a direct-injection gaseous-fuelled internal combustion engine system with a selective catalytic reduction converter

#161
20120310507
2012-12-06

METHOD AND DEVICE FOR CONTROLLING AN SCR CATALYTIC CONVERTER OF A VEHICLE

#162
20120285139
2012-11-15

Emissions control diagnostic method and system

#163
20120280819
2012-11-08

Efficiency determination for a selective-catalytic-reduction catalyst

#164
20120255280
2012-10-11

Method for monitoring a catalytic converter

#165
20120240552
2012-09-27

Method of operating an exhaust gas treatment system to prevent quenching during regeneration

#166
20120233986
2012-09-20

System and method to control selective catalytic reduction systems in feedback

#167
20120233984
2012-09-20

Method and system for controlling a nitrogen oxide (NOx) conversion efficiency monitor

#168
20120227386
2012-09-13

Internal combustion engine

#169
20120227383
2012-09-13

Method for controlling a system for the treatment of exhaust gases from an internal combustion engine

#170
20120222404
2012-09-06

Method for controlling pollutant emissions from a combustion engine

#171
20120222399
2012-09-06

OXIDATION CATALYST BURN THRESHOLD ADJUSTMENT TO AVOID QUENCHING

#172
20120198794
2012-08-09

Genset enclosure

#173
20120150495
2012-06-14

THREE-DIMENSIONAL CATALYTIC CONVERTER MODELING

#174
20120137663
2012-06-07

Method for predicting NOx loading at DeNOx catalyst and exhaust system using the same

#175
20120137661
2012-06-07

Method for predicting regeneration of DeNOx catalyst and exhaust system using the same

#176
20120085083
2012-04-12

SCR ammonia slip detection

#177
20120085082
2012-04-12

System and method for detecting low quality reductant and catalyst degradation in selective catalytic reduction systems

#178
20120067027
2012-03-22

Exhaust injection muffler

#179
20120060477
2012-03-15

Operating method for an exhaust aftertreatment system and exhaust aftertreatment system

#180
20120060474
2012-03-15

Exhaust cooler

#181
20120060473
2012-03-15

Marine exhaust catalyst

#182
20120017568
2012-01-26

Ammonia sensor control, with NOfeedback, of an SCR aftertreatment system

#183
20120017567
2012-01-26

Transient compensation control of an SCR aftertreatment system

#184
20120006007
2012-01-12

Method for operating an exhaust system, exhaust system and vehicle having an exhaust system

#185
20120006004
2012-01-12

Methods and systems for controlling reductant levels in an SCR catalyst

#186
20120000190
2012-01-05

Exhaust gas purification system for internal combustion engine

#187
20110265452
2011-11-03

Ammonia sensor control of an SCR aftertreatment system

#188
20110257899
2011-10-20

Method to estimate NOconcentration in an exhaust gas of an internal combustion engine

#189
20110252867
2011-10-20

Method for diagnosing the performance of a catalytic converter

#190
20110239627
2011-10-06

Apparatus and method for monitoring oxidation catalyst functionality

#191
20110219747
2011-09-15

Control system for doser compensation in an SCR system

#192
20110209461
2011-09-01

System, method, and apparatus for determining aftertreatment fluid quality

#193
20110153260
2011-06-23

Method for diagnosing a catalytic device of an engine exhaust gas after-treatment system

#194
20110146240
2011-06-23

Apparatus, system, and method for mitigating diesel exhaust fluid deposits and associated conditions

#195
20110120095
2011-05-26

System and method for monitoring catalyst efficiency and post-catalyst oxygen sensor performance

#196
20110113752
2011-05-19

Method for operating an exhaust gas treatment system having an SCR catalytic converter

#197
20110094209
2011-04-28

Method for correcting nitrogen oxide emission models

#198
20110023465
2011-02-03

EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE

#199
20110000190
2011-01-06

METHOD AND APPARATUS FOR NO2-BASED REGENERATION OF DIESEL PARTICULATE FILTERS USING RECIRCULATED NOX

#200
20100326055
2010-12-30

Method and apparatus for regenerating a catalyzed diesel particulate filter (DPF) via active NO2-based regeneration with enhanced effective NO2 supply

#201
20100257922
2010-10-14

Abnormality diagnosis apparatus and abnormality diagnosis method for NOx catalyst

#202
20100205940
2010-08-19

EXHAUST EMISSION CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE AND EXHAUST EMISSION CONTROL METHOD

#203
20100115924
2010-05-13

Method of controlling NOx purification system and NOx purification system

#204
20100107609
2010-05-06

Method for controlling a SCR catalyst

#205
20100101214
2010-04-29

DIAGNOSTIC METHODS FOR SELECTIVE CATALYTIC REDUCTION (SCR) EXHAUST TREATMENT SYSTEM

#206
20100050614
2010-03-04

System and method for selective catalytic reduction control

#207
20100028228
2010-02-04

Current storage estimation for selective catalytic reduction catalysts

#208
20100024394
2010-02-04

TROUBLE DIAGNOSIS DEVICE FOR EXHAUST GAS PURIFICATION SYSTEM AND TROUBLE DIAGNOSIS METHOD FOR EXHAUST GAS PURIFICATION SYSTEM

#209
20100001535
2010-01-07

EXHAUST GAS THERMAL ENERGY RECOVERY SYSTEM OF HYBRID ELECTRIC VEHICLE

#210
20090320450
2009-12-31

Exhaust purification device of internal combustion engine

#211
20090293451
2009-12-03

Exhaust control system having diagnostic capability

#212
20090288396
2009-11-26

Exhaust emission control device for internal combustion

#213
20090255233
2009-10-15

Exhaust purification device and exhaust purification method of internal combustion engine

#214
20090158710
2009-06-25

Exhaust purification apparatus for engine

#215
20090126350
2009-05-21

Exhaust emission control device

#216
20090056315
2009-03-05

Method for reducing NH3 release from SCR catalysts during thermal transients

#217
20090025367
2009-01-29

Physical based LNT regeneration strategy

#218
20080306673
2008-12-11

Exhaust emission control device for internal combustion engine

#219
20080250778
2008-10-16

Excess NH3 storage control for SCR catalysts

#220
20080131346
2008-06-05

Exhaust emission control device and method for internal combustion engine, and engine control unit

#221
20070240407
2007-10-18

Method for modifying trigger level for adsorber regeneration

#222
20060000202
2006-01-05

Method for operating a catalytic converter used for purifying the exhaust gas of an internal combustion engine and a device for implementing the method

#223
18915088
2026-02-10

Systems and methods for monitoring nitrogen dioxide variability in an engine aftertreatment system

#224
17876863
2023-08-22

Systems and methods for determining an efficiency value associated with a catalyst member

#225
17229801
2021-11-30

Method for controlling exhaust after-treatment system based on NO medium adjustment

#226
13432408
2015-06-30

Monolith catalyst test system and method for its use