Patents-Review.com
ClassID:

137767 ⎘

F01N1/165 - CPC Classification

Classification description:

Silencing apparatus characterised by method of silencing by using movable parts for adjusting flow area

Recent Application in this class:
#1
20250389215
2025-12-25

CONVERTIBLE SILENCER

 #2
20250067202
2025-02-27

ACOUSTIC EFFICIENCY

 #3
20250043706
2025-02-06

CONVERTIBLE SILENCER

 #4
20240167405
2024-05-23

EXHAUST VALVE AND METHOD FOR MANUFACTURING SAME

 #5
20240044274
2024-02-08

Engine assembly for a vehicle having a hydrocarbon trap

 #6
20230235690
2023-07-27

Exhaust restriction device for improved sensor signal

 #7
20230212968
2023-07-06

EXHAUST SILENCING DEVICE AND SYSTEM, VEHICLE, AND EXHAUST SILENCING METHOD

 #8
20230147854
2023-05-11

Methods and system for de-icing a valve of an exhaust system

 #9
20230011637
2023-01-12

Adjustable exhaust backpressure device

 #10
20220298941
2022-09-22

Exhaust sound tuning system and method

 #11
20210317769
2021-10-14

Exhaust system for an internal combustion engine

 #12
20210199057
2021-07-01

Valve assembly for exhaust system

 #13
20210148262
2021-05-20

Multi-mode exhaust muffler

 #14
20210140354
2021-05-13

Muffler for vehicle

 #15
20210131324
2021-05-06

Adaptive exhaust valve with purpose-designed spring

 #16
20210033008
2021-02-04

Exhaust system for an internal combustion engine

 #17
20210025340
2021-01-28

Externally mounted in-line exhaust gas valve

 #18
20210025302
2021-01-28

Externally mounted in-line exhaust gas valve

 #19
20210025301
2021-01-28

Externally mounted in-line exhaust gas valve

 #20
20210010401
2021-01-14

Control system for a valve

 #21
20200362735
2020-11-19

Methods and systems for an active exhaust valve

 #22
20200318521
2020-10-08

Methods and system for diagnosing active exhaust valves based on temperature and thermal image data

 #23
20200309278
2020-10-01

Damper Valve Assembly

 #24
20200309277
2020-10-01

Damper valve assembly

 #25
20200240301
2020-07-30

Systems and methods for regulating performance characteristics of an exhaust system with a tri-modal valve

 #26
20200157988
2020-05-21

EXHAUST VALVE DEVICE

 #27
20200116064
2020-04-16

Exhaust heat recovery and acoustic valve with exhaust gas recirculation features

 #28
20200049040
2020-02-13

Exhaust flap for an exhaust system of a motor vehicle, controller for such an exhaust flap, and method for operating such an exhaust flap

 #29
20190368397
2019-12-05

Heat exchanger for exhaust tuning system

 #30
20190338686
2019-11-07

Variable restriction valve for vehicle exhaust system

 #31
20190323611
2019-10-24

Valve for exhaust line

 #32
20190170043
2019-06-06

MUFFLER FOR SINGLE-CYLINDER DIESEL ENGINE

 #33
20190120103
2019-04-25

Heat exchanger for exhaust tuning systems

 #34
20190085744
2019-03-21

Exhaust device for internal combustion engine

 #35
20190078476
2019-03-14

Exhaust device for internal combustion engine

 #36
20190055867
2019-02-21

Muffler with selected exhaust pathways

 #37
20190055866
2019-02-21

Exhaust device for internal combustion engine

 #38
20190048777
2019-02-14

Gasoline particulate filter diagnostics

 #39
20180245501
2018-08-30

Changeover valve

 #40
20180238209
2018-08-23

Valve unit including an interface

 #41
20180238208
2018-08-23

Vehicle including cabin disturbance mitigation system

 #42
20180223709
2018-08-09

FUNCTION BASED CONTINUOUS EXHAUST VALVE CONTROL

 #43
20180149112
2018-05-31

HEAT EXCHANGER FOR A MOTOR VEHICLE

 #44
20180149111
2018-05-31

HEAT EXCHANGER FOR A MOTOR VEHICLE

 #45
20180128189
2018-05-10

Exhaust gas flap

 #46
20180051610
2018-02-22

Alignment system for slotted snap-action valve assembly for exhaust system

 #47
20180051609
2018-02-22

Slotted snap-action valve assembly for exhaust system

 #48
20180051607
2018-02-22

Flutter dampened exhaust valve

 #49
20180030869
2018-02-01

Muffler assembly

 #50
20170335741
2017-11-23

Muffler for an exhaust system of an internal combustion engine, especially for motor vehicles with hybrid drive

 #51
20170298793
2017-10-19

Selectively tunable exhaust noise attenuation device

 #52
20170276041
2017-09-28

Muffler device including central common active control valve

 #53
20170248048
2017-08-31

Sound control of an engine or other prime mover

 #54
20170234265
2017-08-17

Heat exchanger for a rankine cycle in a vehicle muffler

 #55
20170204756
2017-07-20

Passive exhaust valve assembly with overlapping slip joint and method of forming and installation

 #56
20170191390
2017-07-06

Silencer

 #57
20170122155
2017-05-04

Muffler with selected exhaust pathways

 #58
20170107875
2017-04-20

Exhaust valve for muffler and muffler including the same

 #59
20170074135
2017-03-16

Exhaust system spring with torsional damping

 #60
20170058733
2017-03-02

Exhaust system for an internal combustion engine

 #61
20160326924
2016-11-10

Variable valve

 #62
20160305347
2016-10-20

Control valve for an exhaust system and an exhaust system having such a control valve

 #63
20160281557
2016-09-29

Silencer for internal combustion engine

 #64
20160273424
2016-09-22

MOUNTING STRUCTURE OF VARIABLE VALVE FOR DUAL EXHAUST SYSTEM

 #65
20160222863
2016-08-04

Passive exhaust valve assembly and forming method

 #66
20160160718
2016-06-09

Triple baffled muffler

 #67
20160123240
2016-05-05

Spring biased exhaust valve assembly

 #68
20150275721
2015-10-01

System and method for tuned exhaust

 #69
20150219001
2015-08-06

EXHAUST SYSTEM FOR ADJUSTING PERFORMANCE OF A VEHICLE

 #70
20150040544
2015-02-12

Structure for utilizing exhaust heat of vehicle

 #71
20150027566
2015-01-29

Valve device for exhaust gas flow path

 #72
20140318888
2014-10-30

Silencer arrangement

 #73
20130175115
2013-07-11

Adjustable exhaust baffling device

 #74
20130056083
2013-03-07

Hybrid valve for attenuation of low frequency noise

 #75
20130045082
2013-02-21

COMPRESSOR OF AN EXHAUST-GAS TURBOCHARGER

 #76
20130019590
2013-01-24

DYNAMICALLY ADJUSTING TUNED EXHAUST SYSTEM

 #77
20120324871
2012-12-27

System of treating exhaust gas of engine

 #78
20120180465
2012-07-19

Exhaust apparatus of internal combustion engine

 #79
20120073277
2012-03-29

Valve for motor vehicle exhaust muffler

 #80
20110126531
2011-06-02

VARIABLE MUFFLER

 #81
20110108345
2011-05-12

Two-wheeled motor vehicle

 #82
20110030342
2011-02-10

Exhaust gas control system and exhaust gas control method

 #83
20100313554
2010-12-16

ADAPTIVE VALVE FOR EXHAUST SYSTEM

 #84
20100293923
2010-11-25

METHOD AND APPARATUS FOR CONTROLLING AN EXHAUST THROTTLE VALVE OF AN INTERNAL COMBUSTION ENGINE

 #85
20100276226
2010-11-04

Muffler

 #86
20100229543
2010-09-16

DEVICE FOR INFLUENCING AN EXHAUST GAS FLOW

 #87
20100192560
2010-08-05

Passive valve assembly with negative start angle

 #88
20100170743
2010-07-08

High-performance muffler assembly with multiple modes of operation

 #89
20100146957
2010-06-17

Exhaust system of an internal combustion engine

 #90
20100126159
2010-05-27

Valve for a motor vehicle exhaust silencer, and silencer comprising a valve of this type

 #91
20100025146
2010-02-04

Baffle plate operating mechanism for muffler

 #92
20090229911
2009-09-17

VARIABLE GEOMETRY MUFFLER FOR AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE

 #93
20090222192
2009-09-03

Straddle-type vehicle and combustion controller for straddle-type vehicle

 #94
20090217668
2009-09-03

DEVICE FOR INFLUENCING AN EXHAUST GAS FLOW

 #95
20090084998
2009-04-02

Noise attenuation valve assembly

 #96
20090013673
2009-01-15

MUFFLER FOR SMALL ENGINE

 #97
20080308348
2008-12-18

Exhaust System for Internal Combustion Engines

 #98
20080302598
2008-12-11

Silencer

 #99
20080236680
2008-10-02

Passive valve for attenuation of low frequency noise

 #100
20080223025
2008-09-18

Snap-action valve for exhaust system

 #101
20080156578
2008-07-03

VARIABLE GEOMETRY MUFFLER FOR AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE

 #102
20080083218
2008-04-10

Passive throttling valve outside of muffler

 #103
20080023264
2008-01-31

Muffler having adjustable butterfly valve for improved sound attenuation and engine performance

 #104
20070283680
2007-12-13

Exhaust Processor And Associated Method

 #105
20070261402
2007-11-15

Multi-stage regulation of exhaust back pressure

 #106
20070261395
2007-11-15

Diesel exhaust system variable backpressure muffler

 #107
20070227807
2007-10-04

High-performance muffler assembly with multiple modes of operation

 #108
20070107981
2007-05-17

Exhaust silencer

 #109
20070095605
2007-05-03

Muffler for vehicle

 #110
20070080020
2007-04-12

Silencer for exhaust systems

 #111
20070045044
2007-03-01

Flow-through mufflers with optional thermo-electric, sound cancellation, and tuning capabilities

 #112
20070029133
2007-02-08

Device for modulating noise in a motor vehicle

 #113
20070022748
2007-02-01

Pressure regulating device for exhaust tube

 #114
20070012510
2007-01-18

Muffler outlet part for a motorcycle muffler

 #115
20070006829
2007-01-11

Velocity control of exhaust valve actuation

 #116
20060272322
2006-12-07

Electrically actuated flow assisted exhaust valve

 #117
20060260868
2006-11-23

Exhaust flow rate control valve

 #118
20060243822
2006-11-02

Dynamically adjusting tuned exhaust system

 #119
20060242952
2006-11-02

Exhaust system for motorcycle

 #120
20060201742
2006-09-14

Motorcycle exhaust system

 #121
20060065477
2006-03-30

Muffler

 #122
20060048996
2006-03-09

Discharge gas check valve integral with muffler

 #123
20060027420
2006-02-09

Semi-active muffler

 #124
20050189166
2005-09-01

Motorcycle exhaust system

 #125
20050161282
2005-07-28

Flapper finger valve

 #126
20050150717
2005-07-14

Silencer for pneumatic machines

 #127
20050109024
2005-05-26

Electrically controlled exhaust valve

 #128
20050061580
2005-03-24

Flow altering valve for vehicular exhaust system

 #129
20050056010
2005-03-17

Exhaust system for motorcycle

 #130
15378598
2020-03-31

Systems and methods for controlling vehicle exhaust output