ClassID:

137851

F01N3/2053 - CPC Classification

Classification description:

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 By-passing catalytic reactors, e.g. to prevent overheating

Recent Application in this class:
#1
20260078692
2026-03-19

EXHAUST PURIFICATION DEVICE

#2
20260015957
2026-01-15

EXHAUST GAS SYSTEM

#3
20250361826
2025-11-27

DUAL-ACTING VALVE ENABLED CATALYST BYPASS

#4
20250305433
2025-10-02

EXHAUST AFTERTREATMENT UNIT

#5
20250305432
2025-10-02

SYSTEMS AND METHODS FOR CONTROLLING THE TEMPERATURE OF AN AFTERTREATMENT SYSTEM

#6
20250290438
2025-09-18

ENGINE DEVICE

#7
20250198322
2025-06-19

DUAL LEG AFTERTREATMENT SYSTEM

#8
20250129732
2025-04-24

ENGINE DEVICE

#9
20240159180
2024-05-16

Dual leg aftertreatment system

#10
20240141813
2024-05-02

Exhaust gas aftertreatment device for internal combustion engine

#11
20240125261
2024-04-18

Device increasing engine efficiency and reducing exhaust and noise

#12
20230407777
2023-12-21

Exhaust gas aftertreatment device

#13
20230374926
2023-11-23

DUAL-ACTING VALVE ENABLED CATALYST BYPASS

#14
20230250745
2023-08-10

High-pressure SCR system with venting and pressure-stabilizing for marine diesel engine and ship having the same

#15
20230193801
2023-06-22

Engine controller and method for controlling engine

#16
20230167757
2023-06-01

Aftertreatment system

#17
20230151753
2023-05-18

Exhaust gas after-treatment system of an engine designed as gas engine or dual-fuel engine, engine and method for operating the same

#18
20220349329
2022-11-03

Exhaust-gas aftertreatment system for an internal combustion engine

#19
20220268194
2022-08-25

Exhaust gas treatment arrangement for an exhaust gas system of an internal combustion engine

#20
20220213824
2022-07-07

Post-treatment system, method for controlling post-treatment system, and vehicle

#21
20220162976
2022-05-26

Flow diverter for high efficiency mixer

#22
20220162974
2022-05-26

Inlet flow for high efficiency mixers

#23
20220042438
2022-02-10

Aftertreatment system

#24
20220010710
2022-01-13

Aftertreatment system

#25
20210340895
2021-11-04

Method for operating a drive device and corresponding drive device

#26
20210310395
2021-10-07

Engine exhaust aftertreatment device and method

#27
20210254529
2021-08-19

Exhaust gas purification device

#28
20210239024
2021-08-05

EXHAUST-GAS SYSTEM

#29
20210207511
2021-07-08

Internal combustion engine systems including criteria pollutant mitigation

#30
20210010405
2021-01-14

Method and apparatus for managing flow through an exhaust aftertreatment system

#31
20200248605
2020-08-06

After treatment system and after treatment method for lean-burn engine

#32
20200208581
2020-07-02

Systems and methods for a split exhaust engine system

#33
20200191034
2020-06-18

Apparatus and method for controlling exhaust gas purification

#34
20200165950
2020-05-28

Exhaust after-treatment system having an oxidation component bypass for low temperature SCR

#35
20200131981
2020-04-30

Method for operating a combustion engine system

#36
20200095913
2020-03-26

Method and apparatus for turbo bypass valve operation strategy for close coupled SCR

#37
20200040789
2020-02-06

Exhaust gas purifier

#38
20190376429
2019-12-12

Method and apparatus to control valve operation for close coupled SCR

#39
20190292964
2019-09-26

Exhaust gas system and method for operating an exhaust gas system

#40
20190249596
2019-08-15

Exhaust gas purification apparatus for an internal combustion engine

#41
20190170041
2019-06-06

Reductant generation systems and methods

#42
20190111388
2019-04-18

Catalytic reactor and ship provided with same

#43
20180371973
2018-12-27

Exhaust gas after-treatment arrangement and method for operating such an arrangement

#44
20180340456
2018-11-29

Systems and methods for controlling bypass of exhaust after treatment device

#45
20180252169
2018-09-06

Engine control device

#46
20180171907
2018-06-21

Systems and methods for a split exhaust engine system

#47
20180171898
2018-06-21

Systems and methods for a split exhaust engine system

#48
20180135490
2018-05-17

Exhaust system for an internal combustion engine and method for controlling the exhaust system

#49
20180128145
2018-05-10

METHOD AND SYSTEM FOR AN EXHAUST DIVERTER VALVE

#50
20180087428
2018-03-29

Warm-up of a catalytic aftertreatment device

#51
20180038257
2018-02-08

Method and system for an exhaust catalyst

#52
20180038256
2018-02-08

Exhaust emission control system of engine

#53
20170370314
2017-12-28

Control apparatus for internal combustion engine

#54
20170350295
2017-12-07

Exhaust gas control apparatus for internal combustion engine

#55
20170241317
2017-08-24

Exhaust treatment system having membrane module for water removal

#56
20170226938
2017-08-10

Auto-ignition internal combustion engine suitable for HCCI operation, and method for operating an internal combustion engine of said type

#57
20170226911
2017-08-10

System and method for managing contaminant storage in a storage catalyst

#58
20170218818
2017-08-03

Exhaust system

#59
20170184001
2017-06-29

Catalytic converter and exhaust-gas aftertreatment arrangement

#60
20170159525
2017-06-08

Use of specific engine cylinders for reductant generation

#61
20170138238
2017-05-18

Exhaust gas aftertreatment bypass system and methods

#62
20160312720
2016-10-27

Engine with supercharger

#63
20160169074
2016-06-16

Aftertreatment system implementing low-temperature SCR

#64
20160160769
2016-06-09

Method and apparatus for operating a vehicle, in particular a watercraft

#65
20160160719
2016-06-09

Multi-leg aftertreatment system

#66
20160131000
2016-05-12

Selective catalytic reduction and catalytic regeneration system

#67
20160108788
2016-04-21

Method and system for controlling exhaust gas flow in engine system

#68
20160108787
2016-04-21

Bypass exhaust pathway to allow gases to bypass the start catalyst of a vehicle

#69
20150361860
2015-12-17

Exhaust-gas aftertreatment system with venturi exhaust passage devices

#70
20150361843
2015-12-17

Method of operating an internal combustion engine

#71
20150322848
2015-11-12

Systems and methods for an engine

#72
20150315986
2015-11-05

Natural gas engine and operation method for natural gas engine

#73
20150275736
2015-10-01

Aftermarket exhaust detection

#74
20150267584
2015-09-24

Exhaust system for dual fuel engines

#75
20150258495
2015-09-17

Exhaust gas purification device

#76
20150176454
2015-06-25

Compact exhaust gas treatment system and method of operating the same

#77
20150128571
2015-05-14

EXHAUST GAS AFTERTREATMENT BYPASS SYSTEM AND METHODS

#78
20150118133
2015-04-30

System and method for treating exhaust pipe

#79
20150056118
2015-02-26

Flue gas stream bypass during selective catalytic reduction in a power plant

#80
20150023854
2015-01-22

Exhaust gas post-processing apparatus and control method thereof

#81
20150004085
2015-01-01

Exhaust gas after-treatment apparatus having improved durability and exhaust gas after-treatment method

#82
20140352285
2014-12-04

Internal combustion engine

#83
20140311126
2014-10-23

Air-injection system to improve effectiveness of selective catalytic reduction catalyst

#84
20140260192
2014-09-18

Exhaust system for dual fuel engines

#85
20140255258
2014-09-11

Exhaust Line for a Heat Engine

#86
20140230433
2014-08-21

Internal combustion engine with exhaust-gas aftertreatment arrangement and method for operating an internal combustion engine of said type

#87
20140230410
2014-08-21

Internal combustion engine with exhaust-gas aftertreatment arrangement and intake air arrangement and method for operating an internal combustion engine of said type

#88
20140224291
2014-08-14

Thermoelectric-based power generation systems and methods

#89
20140216030
2014-08-07

Exhaust system with a reformer catalyst

#90
20140186220
2014-07-03

Exhaust gas purification apparatus for an internal combustion engine

#91
20140116027
2014-05-01

Multi-leg aftertreatment system

#92
20140013729
2014-01-16

Heating module for an exhaust-gas purification system

#93
20130276434
2013-10-24

Method and apparatus for cold starting an internal combustion engine

#94
20130269326
2013-10-17

Exhaust system with HC adsorber and parallel exhaust-gas catalytic converter, and vehicle having an exhaust system of said type

#95
20130101474
2013-04-25

Exhaust purification device of internal combustion engine

#96
20130031894
2013-02-07

Method and exhaust-gas treatment device for regenerating an exhaust-gas purification component and motor vehicle having the exhaust-gas treatment device

#97
20120304887
2012-12-06

Systems and methods for an engine

#98
20120291422
2012-11-22

Particulate filter and associated methods for exhaust purification

#99
20120279206
2012-11-08

DEVICE, METHOD, AND SYSTEM FOR EMISSIONS CONTROL

#100
20120216529
2012-08-30

ENGINE EXHAUST AFTERTREATMENT SYSTEM

#101
20120210698
2012-08-23

METHOD AND DEVICE FOR DETERMINING THE CONVERSION CAPACITY OF A CATALYTIC CONVERTER FOR CLEANING EXHAUST GAS

#102
20120198821
2012-08-09

Devices, systems and methods for reducing an emission from a combustion reaction

#103
20120159931
2012-06-28

EXHAUST SYSTEM AND HEATING-UP METHOD

#104
20120102931
2012-05-03

High volume exhaust gas treatment system

#105
20120096854
2012-04-26

ENGINE EXHAUST TREATMENT SYSTEM AND METHOD FOR TREATING EXHAUST GAS FROM AN ENGINE

#106
20120023907
2012-02-02

System and method for processing NHD slippage of a selective catalyst reduction system

#107
20110314794
2011-12-29

Diesel engine system and method and apparatus for handling diesel engine exhaust

#108
20110258991
2011-10-27

Selective catalyst reduction system with bypass system

#109
20110239630
2011-10-06

Closely coupled exhaust aftertreatment system for an internal combustion engine having twin turbochargers

#110
20110233436
2011-09-29

Conical air flow valve having improved flow capacity and control

#111
20110225955
2011-09-22

EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINE

#112
20110214413
2011-09-08

Configuration and method for cleaning an exhaust gas flow of an internal combustion engine by separating particles and motor vehicle having the configuration

#113
20110197572
2011-08-18

SMART EXHAUST GAS FLOW CONTROL APPARATUS

#114
20110192143
2011-08-11

Method and apparatus for cold starting an internal combustion engine

#115
20110185704
2011-08-04

Device and method for purifying exhaust gases for an internal combustion engine

#116
20110179770
2011-07-28

EXHAUST GAS SYSTEM FOR AN INTERNAL COMBUSTION ENGINE AND METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE

#117
20110131978
2011-06-09

Exhaust gas purifying apparatus for a turbocharged internal combustion engine

#118
20110120106
2011-05-26

Device for producing electrical energy from exhaust gas heat and motor vehicle having the device

#119
20110120099
2011-05-26

Systems and methods for reducing NObreakthrough

#120
20110067742
2011-03-24

Thermoelectric-based power generation systems and methods

#121
20110058999
2011-03-10

Low temperature selective catalytic reduction catalyst and associated systems and methods

#122
20110047968
2011-03-03

Method and apparatus for de-sulfurization on a diesel oxidation catalyst

#123
20110041482
2011-02-24

METHOD AND APPARATUS FOR EXHAUST AFTERTREATMENT OF AN INTERNAL COMBUSTION ENGINE

#124
20110041481
2011-02-24

Method of controlling NOx purification system, and NOx purification system

#125
20110036310
2011-02-17

HYDROGEN SUPPLY UNIT FOR INTERNAL COMBUSTION ENGINE AND METHOD OF OPERATING INTERNAL COMBUSTION ENGINE

#126
20110023765
2011-02-03

Machinery arrangement for marine vessel

#127
20110011082
2011-01-20

Emissions Control System Having External Turbocharger Wastegate and Integrated Oxidation Catalyst

#128
20110011065
2011-01-20

High-efficiency SCR catalytic converter

#129
20100326057
2010-12-30

Exhaust Gas Purification Device

#130
20100293926
2010-11-25

Hydrocarbon selective catalytic reduction for NOx control with gasoline-fueled spark ignition engines using engine-out hydrocarbons

#131
20100199634
2010-08-12

EXHAUST TREATMENT SYSTEM IMPLEMENTING SELECTIVE DOC BYPASS

#132
20100192550
2010-08-05

Exhaust gas purification system for internal combustion engine

#133
20100192544
2010-08-05

Exhaust gas purification apparatus in an internal combustion engine

#134
20100154390
2010-06-24

Exhaust gas purification system for an internal combustion engine

#135
20100139269
2010-06-10

TURBOCHARGED INTERNAL COMBUSTION ENGINE AND METHOD

#136
20100139250
2010-06-10

Method for operating an exhaust aftertreatment system and exhaust aftertreatment system

#137
20100139249
2010-06-10

Exhaust gas after treatment system

#138
20100139246
2010-06-10

Control method for controlling an exhaust aftertreatment system and exhaust aftertreatment system

#139
20100126151
2010-05-27

Exhaust gas after treatment system (EATS)

#140
20100107611
2010-05-06

Method and apparatus for exhaust aftertreatment in an internal combustion engine

#141
20100107610
2010-05-06

Exhaust System for an Internal Combustion Engine

#142
20100101213
2010-04-29

On-board-diagnosis method for an exhaust aftertreatment system and on-board-diagnosis system for an exhaust aftertreatment system

#143
20100098609
2010-04-22

Treatment plant for pollutants contained in the exhaust gas of an internal-combustion engine and method using same

#144
20100071353
2010-03-25

Exhaust tract for an internal combustion engine

#145
20100064686
2010-03-18

Internal combustion engine and control system for internal combustion engine

#146
20100037768
2010-02-18

Method and device for the regeneration of a particle filter arranged in the exhaust gas tract of an internal combustion engine

#147
20100037607
2010-02-18

Method and device for the regeneration of a particle filter arranged in the exhaust gas tract of an internal combustion engine

#148
20100024399
2010-02-04

Exhaust gas control apparatus for internal combustion engine

#149
20090320813
2009-12-31

Exhaust gas control apparatus of an internal combustion engine

#150
20090260349
2009-10-22

Air-injection system to improve effectiveness of selective catalytic reduction catalyst for gasoline engines

#151
20090250018
2009-10-08

Engine system

#152
20090229253
2009-09-17

Exhaust gas purification system for internal combustion engine

#153
20090205325
2009-08-20

Compact exhaust gas aftertreatment system

#154
20090199537
2009-08-13

METHODS TO PROTECT SELECTIVE CATALYST REDUCER AFTERTREATMENT DEVICES DURING UNCONTROLLED DIESEL PARTICULATE FILTER REGENERATION

#155
20090151339
2009-06-18

Method and arrangement for improving the hydrolysis of a reduction agent in an exhaust gas post treatment system

#156
20090151331
2009-06-18

Exhaust purification device of internal combustion engine

#157
20090145117
2009-06-11

Exhaust gas aftertreatment system

#158
20090145116
2009-06-11

Exhaust system of internal combustion engine

#159
20090133388
2009-05-28

Exhaust gas purification apparatus and exhaust gas purification method

#160
20090126351
2009-05-21

Exhaust system of internal combustion engine

#161
20090120076
2009-05-14

Process for reducing NOfrom combustion system exhaust

#162
20090113876
2009-05-07

Internal combustion engine exhaust gas system

#163
20090038293
2009-02-12

Exhaust system of internal combustion engine

#164
20090031711
2009-02-05

Exhaust gas system, especially for an internal combustion engine of a motor vehicle

#165
20080295499
2008-12-04

Exhaust system utilizing a low-temperature oxidation catalyst

#166
20080289322
2008-11-27

Exhaust purification device for internal combustion engine, and exhaust control device and exhaust control method for internal combustion engine

#167
20080271443
2008-11-06

Device and method for the thermal treatment of an exhaust gas flow, vehicle having the device and method of operating an exhaust gas system

#168
20080271439
2008-11-06

Exhaust Line for Heat Engine

#169
20080264049
2008-10-30

Method for internal combustion engine with exhaust recirculation

#170
20080241006
2008-10-02

EXHAUST GAS PURIFICATION APPARATUS

#171
20080236134
2008-10-02

Exhaust gas simulation system with dual path temperature control for control of exhaust temperature

#172
20080209889
2008-09-04

Internal Combustion Engine Featuring Exhaust Gas Aftertreatment and Method For the Operation Thereof

#173
20080184699
2008-08-07

Exhaust gas cleaning apparatus and method thereof

#174
20080172167
2008-07-17

Air-fuel ratio control apparatus

#175
20080172166
2008-07-17

Air-fuel ratio control apparatus

#176
20080155968
2008-07-03

Apparatus, system, and method for exhaust aftertreatment efficiency enhancement

#177
20080120966
2008-05-29

Exhaust Gas Purification System for Internal Combustion Engine

#178
20080041053
2008-02-21

Exhaust gas post treatment system

#179
20080041050
2008-02-21

Exhaust gas post treatment system

#180
20080034735
2008-02-14

Internal combustion engine and method of controlling the same

#181
20070271907
2007-11-29

Internal combustion engine and control method for internal combustion engine

#182
20070261396
2007-11-15

Variable position catalyst

#183
20070220866
2007-09-27

Exhaust gas control apparatus for internal combustion engine

#184
20070214779
2007-09-20

Catalytic converter unit and apparatus

#185
20070214775
2007-09-20

Diagnostic apparatus for an exhaust gas purification system of an internal combustion engine, an exhaust gas purification system and a diagnostic method thereof

#186
20070163243
2007-07-19

Exhaust system with cam-operated valve assembly and associated method

#187
20070151232
2007-07-05

Devices and methods for reduction of NOemissions from lean burn engines

#188
20070144245
2007-06-28

PM generating apparatus

#189
20070135968
2007-06-14

Apparatus, system, and method for calculating maximum back pressure

#190
20070125067
2007-06-07

Exhaust system

#191
20070122317
2007-05-31

Multi-stage system for selective catalytic reduction

#192
20070095052
2007-05-03

Exhaust system of an internal combustion engine

#193
20070079602
2007-04-12

Thermal management of hybrid LNT/SCR aftertreatment during desulfation

#194
20070065350
2007-03-22

Catalyst carrier body for a catalytic converter to be installed close to an engine, catalytic converter, exhaust system and vehicle having the catalyst carrier body

#195
20070056272
2007-03-15

Apparatus, system, and method for determining and implementing estimate reliability

#196
20070056270
2007-03-15

Apparatus, system, and method for estimating ash accumulation

#197
20070039319
2007-02-22

Exhaust manifold

#198
20070036694
2007-02-15

Exhaust aftertreatment system using urea water

#199
20070006573
2007-01-11

Thermal management of hybrid LNT/SCR aftertreatment during desulfation

#200
20060283178
2006-12-21

Exhaust emission purifying apparatus for and exhaust emission purifying method of internal combustion engine

#201
20060283173
2006-12-21

Further improved reversing flow catalytic converter for internal combustion engines

#202
20060266025
2006-11-30

Reversing flow catalytic converter for internal combustion engines

#203
20060266024
2006-11-30

Layout of catalyst of vehicle

#204
20060242947
2006-11-02

Emission Control System For An Engine

#205
20060236682
2006-10-26

Exhaust system and control method for an internal combustion engine

#206
20060225408
2006-10-12

Exhaust system for an internal combustion engine

#207
20060179823
2006-08-17

PISTON-TYPE INTERNAL COMBUSTION ENGINE

#208
20060179822
2006-08-17

Systems and methods for reducing emissions of internal combustion engines using a fuel processor bypass

#209
20060101822
2006-05-18

Exhaust heat power generation apparatus

#210
20060101812
2006-05-18

Exhaust catalyst system

#211
20060053771
2006-03-16

Exhaust system

#212
20050268600
2005-12-08

Exhaust system of multi-cylinder internal combustion engine

#213
20050262832
2005-12-01

Exhaust gas purification device of internal combustion engine

#214
20050262829
2005-12-01

Exhaust gas purification device of internal combustion engine

#215
20050247051
2005-11-10

Exhaust treatment control system for an internal combustion engine

#216
20050247049
2005-11-10

Temperature swing adsorption and selective catalytic reduction NOx removal system

#217
20050220679
2005-10-06

System for automobile exhaust gas purification

#218
20050217249
2005-10-06

Exhaust gas purification device of internal combustion engine

#219
20050217248
2005-10-06

Exhaust gas purification device of internal combustion engine

#220
20050210867
2005-09-29

Method for operating an internal combustion engine and device for implementing the method

#221
20050210865
2005-09-29

Accelerating catalytic conversion

#222
20050204729
2005-09-22

Exhaust gas purification device of internal combustion engine

#223
20050166576
2005-08-04

Exhaust aftertreatment system

#224
20050092688
2005-05-05

System and process for treating contaminated fluid system

#225
20050066651
2005-03-31

Intelligent, full-featured diesel engine exhaust treatment system

#226
20050034450
2005-02-17

Exhaust gas purification device of internal combustion engine

#227
20050000208
2005-01-06

Compact dual leg NOx absorber catalyst device and system and method of using the same

#228
18820571
2025-04-22

Cold start catalyst bypass system

#229
18756502
2025-10-07

Work vehicle and aftertreatment system therefor

#230
18342371
2024-05-28

Vehicle bypass catalyst diagnostic system

#231
14050846
2014-09-09

DPF energy conservation