Patents-Review.com
ClassID:

137377 ⎘

F01L13/0036 - CPC Classification

Classification description:

Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction

Sub-classes:
Recent Application in this class:
#1
20260125995
2026-05-07

VALVETRAIN SYSTEMS FOR CYLINDER DEACTIVATION WITH RECHARGING AND METHODS THEREOF

 #2
20250179948
2025-06-05

VARIABLE VALVE DEVICE

 #3
20250109700
2025-04-03

Variable valve device

 #4
20250109698
2025-04-03

VARIABLE VALVE DEVICE

 #5
20250059898
2025-02-20

Rocker with Switchable Rollers for Engine Valvetrains

 #6
20240392708
2024-11-28

INTERCHANGEABLE ENGINE ASSEMBLY

 #7
20240384670
2024-11-21

Integrated Rocker for High Power Engine Braking

 #8
20240344468
2024-10-17

Variable valve actuation device for engine

 #9
20240318582
2024-09-26

Shift gate, sliding cam system and camshaft

 #10
20240301809
2024-09-12

Valve train for an internal combustion engine, in particular of a motor vehicle, as well as an internal combustion engine for a motor vehicle

 #11
20240280037
2024-08-22

VALVE ACTUATION SYSTEM COMPRISING ROCKER ASSEMBLIES SHARING AN OUTPUT ROCKER

 #12
20240247599
2024-07-25

Valve train device

 #13
20240209759
2024-06-27

Actuation system for an internal combustion engine

 #14
20240200476
2024-06-20

Valve actuation system comprising rocker assemblies with one-way coupling therebetween

 #15
20240151167
2024-05-09

Rocker arm assembly with main rocker and forked auxiliary rocker

 #16
20240077003
2024-03-07

Variable valve device

 #17
20240077002
2024-03-07

Variable valve device

 #18
20240035398
2024-02-01

Sliding cam system

 #19
20230332518
2023-10-19

Valve-actuating device having a switching device

 #20
20230323797
2023-10-12

Sliding-cam camshaft assembly for an internal combustion engine, and method for switching a sliding-cam camshaft assembly for an internal combustion engine

 #21
20230123988
2023-04-20

SYSTEMS, METHODS, AND DEVICES FOR ROCKER ARM POSITION SENSING

 #22
20220397045
2022-12-15

Single actuator shifting cam system

 #23
20220349321
2022-11-03

LIFTER ASSEMBLY

 #24
20220341351
2022-10-27

Shift gate, sliding cam system and camshaft

 #25
20220235677
2022-07-28

Valvetrain power transfer module with shortened leaf-spring contact

 #26
20220228516
2022-07-21

Metal stamped switching roller finger follower

 #27
20220205371
2022-06-30

CAMSHAFT AND VALVE ACTUATION MECHANISM OF ENGINE

 #28
20220186640
2022-06-16

Slide cam system and motor

 #29
20220154666
2022-05-19

Engine system

 #30
20220082036
2022-03-17

Electromagnetic actuator

 #31
20220074320
2022-03-10

Variable valve driving mechanism of engine, and engine

 #32
20210372332
2021-12-02

Deceleration cylinder cut-off with sliding cam

 #33
20210340921
2021-11-04

Valve train with cylinder deactivation and compression release

 #34
20210332725
2021-10-28

Variable valve lift device and automobile

 #35
20210262369
2021-08-26

Engine valve actuation with handoff control between cooperative valve actuation motions

 #36
20210172388
2021-06-10

Method for operating an internal combustion engine of a motor vehicle, in particular of a motor car

 #37
20210164369
2021-06-03

Valve drive device, in particular for an internal combustion engine of a motor vehicle, and method for operating such a valve drive device

 #38
20210156284
2021-05-27

CYLINDER HEAD ARRANGEMENT FOR VARIABLE VALVE ACTUATION ROCKER ARM ASSEMBLIES

 #39
20210148258
2021-05-20

DISCRETE VARIABLE VALVE LIFT ENGINE SYSTEMS AND METHODS

 #40
20210131317
2021-05-06

Development of a switching roller finger follower for cylinder deactivation in internal combustion engines

 #41
20210131316
2021-05-06

DEVELOPMENT OF A SWITCHING ROLLER FINGER FOLLOWER FOR CYLINDER DEACTIVATION IN INTERNAL COMBUSTION ENGINES

 #42
20210108543
2021-04-15

Electromagnetic Control Device, In Particular for Adjusting Camshafts of an Internal Combustion Engine

 #43
20210102480
2021-04-08

Systems, methods, and devices for rocker arm position sensing

 #44
20210102479
2021-04-08

Actuation apparatus

 #45
20210095584
2021-04-01

SWITCHING ROLLER FINGER FOLLOWER FOR BLEEDER BRAKING

 #46
20210087953
2021-03-25

Rocker arm with inboard lost motion spring over valve

 #47
20210062686
2021-03-04

Automatic lash adjuster for use with high compression internal combustion engines

 #48
20210062685
2021-03-04

Switch providing on-board diagnostic feedback for electromagnetically actuated latching rocker arm assembly

 #49
20210047947
2021-02-18

Added motion dual lift rocker arm

 #50
20210040870
2021-02-11

Two step rocker arm having side by side roller configuration

 #51
20210018082
2021-01-21

Cam for a camshaft

 #52
20210010431
2021-01-14

Method of two-step VVL lift malfunction avoidance learning control and electric two-step VVL system thereof

 #53
20210003047
2021-01-07

Electromagnetic Control Device, In Particular for Adjusting Camshafts of an Internal Combustion Engine

 #54
20210003046
2021-01-07

Electromagnetic control device, in particular for adjusting camshafts of an internal combustion engine

 #55
20200340374
2020-10-29

Actuation arrangement for a valve train assembly

 #56
20200325838
2020-10-15

Method for operating an internal combustion engine, and internal combustion engine

 #57
20200325802
2020-10-15

Valve gear for a combustion engine of a motor vehicle

 #58
20200309043
2020-10-01

Valve train with cylinder deactivation and compression release

 #59
20200300131
2020-09-24

Coupling device for a valve-actuating device

 #60
20200300129
2020-09-24

Sliding contact for electrically actuated rocker arm

 #61
20200291831
2020-09-17

Valve train of an internal combustion engine

 #62
20200291829
2020-09-17

Valve train of an internal combustion engine

 #63
20200291828
2020-09-17

Valve control

 #64
20200291826
2020-09-17

Finger follower for lobe switching and single source lost motion

 #65
20200271025
2020-08-27

Variable stroke gas exchange valve train of an internal combustion engine

 #66
20200271023
2020-08-27

Actuation apparatus

 #67
20200232349
2020-07-23

Sliding element with partially hardened latching elevation

 #68
20200232348
2020-07-23

SLIDING CAMSHAFT ASSEMBLY

 #69
20200224560
2020-07-16

Variable valve drive of a combustion piston engine

 #70
20200217228
2020-07-09

Valve operating device, in particular for an internal combustion engine

 #71
20200208547
2020-07-02

Switching tappet or a roller finger follower for compression release braking

 #72
20200191086
2020-06-18

Method and apparatus for diagnosing engine system with continuous variable valve duration apparatus

 #73
20200191027
2020-06-18

Linkage between an auxiliary motion source and a main motion load path in an internal combustion engine

 #74
20200191025
2020-06-18

Valve drive for an internal combustion engine

 #75
20200157984
2020-05-21

Valve drive for an internal combustion engine

 #76
20200149444
2020-05-14

Valve Drive for an Internal Combustion Engine

 #77
20200116050
2020-04-16

Valve train device

 #78
20200088116
2020-03-19

Aftertreatment temperature management via boot-shaped valve lift profiles

 #79
20200072098
2020-03-05

SLIDING CAMSHAFT ASSEMBLY

 #80
20200063609
2020-02-27

ROCKER ARM ASSEMBLY AND COMPONENTS THEREFOR

 #81
20200056513
2020-02-20

Finger follower with oil spray hole

 #82
20200056512
2020-02-20

Self-contained e-foot

 #83
20200049080
2020-02-13

Four-stroke internal combustion engine thereto related vehicle and method

 #84
20200040777
2020-02-06

Rocker arm assembly for engine braking

 #85
20200040774
2020-02-06

Four-stroke internal combustion engine thereto related vehicle and method

 #86
20200003090
2020-01-02

Variable valve operating device for internal combustion engine

 #87
20190368385
2019-12-05

Actuation arrangement for switchable lever

 #88
20190360368
2019-11-28

Method of implementing control logic of compression-ignition engine

 #89
20190338683
2019-11-07

DEVELOPMENT OF A SWITCHING ROLLER FINGER FOLLOWER FOR CYLINDER DEACTIVATION IN INTERNAL COMBUSTION ENGINES

 #90
20190338681
2019-11-07

Variable valve drive

 #91
20190338680
2019-11-07

Sliding contact for electrically actuated rocker arm

 #92
20190331032
2019-10-31

Method and system for variable displacement engine diagnostics

 #93
20190331010
2019-10-31

ADJUSTABLE CAMSHAFT

 #94
20190309663
2019-10-10

DEVELOPMENT OF A SWITCHING ROLLER FINGER FOLLOWER FOR CYLINDER DEACTIVATION IN INTERNAL COMBUSTION ENGINES

 #95
20190309660
2019-10-10

Three roller rocker arm with cantilevered rollers and lost motion spring over valve or over rocker arm pivot

 #96
20190309659
2019-10-10

Three roller rocker arm with outboard lost motion spring

 #97
20190301317
2019-10-03

Motorcycle engine

 #98
20190284971
2019-09-19

Three roller rocker arm with pump-down stop

 #99
20190284967
2019-09-19

Variable valve mechanism of internal combustion engine

 #100
20190277205
2019-09-12

Compression release valvetrain design

 #101
20190257226
2019-08-22

Cylinder deactivation deactivating roller finger follower having improved packaging

 #102
20190257221
2019-08-22

OBD based on magnetic circuit feedback

 #103
20190249575
2019-08-15

Development of a switching roller finger follower for cylinder deactivation in internal combustion engines

 #104
20190234248
2019-08-01

Cylinder head arrangement for variable valve actuation rocker arm assemblies

 #105
20190234247
2019-08-01

Control based on magnetic circuit feedback

 #106
20190226412
2019-07-25

Control device for internal combustion engine

 #107
20190219145
2019-07-18

Sliding module of a camshaft

 #108
20190186304
2019-06-20

Two step rocker arm having side by side roller configuration

 #109
20190178171
2019-06-13

Bi-fuel internal combustion engine systems and methods

 #110
20190178116
2019-06-13

Variable valve train of an internal combustion engine

 #111
20190162086
2019-05-30

Valve drive

 #112
20190156981
2019-05-23

Electromagnetic actuating apparatus with a D-shaped coil for a two-pin actuator

 #113
20190136725
2019-05-09

Valve drive device, in particular for an internal combustion engine

 #114
20190128153
2019-05-02

Lubricating structure of variable valve train

 #115
20190120095
2019-04-25

Variable valve train

 #116
20190120094
2019-04-25

Single lobe deactivating rocker arm

 #117
20190120089
2019-04-25

Variable valve train

 #118
20190085737
2019-03-21

Variable valve train

 #119
20190085732
2019-03-21

Switching rocker arm

 #120
20190072011
2019-03-07

Actuation apparatus for variable valve drive

 #121
20190072010
2019-03-07

Multiple variable valve lift apparatus

 #122
20190072009
2019-03-07

Sliding cam system

 #123
20190055858
2019-02-21

Force transmission device for variable valve drive

 #124
20190048766
2019-02-14

Variable valve lift actuator of engine

 #125
20190048761
2019-02-14

Variable valve lift actuator of engine

 #126
20190048760
2019-02-14

Variable valve control device for internal combustion engines

 #127
20190032525
2019-01-31

Rocker arm arrangement

 #128
20190032524
2019-01-31

Sliding cam system and method for operating an internal combustion engine

 #129
20190032521
2019-01-31

Sliding cam system

 #130
20190010887
2019-01-10

Control device for internal combustion engine

 #131
20190010840
2019-01-10

Valve train device, internal combustion engine comprising a valve train device and method for operating a valve train device

 #132
20190010839
2019-01-10

Cam-switching device and method of controlling cam-switching device

 #133
20190003410
2019-01-03

Internal combustion engine and method for controlling same

 #134
20190003353
2019-01-03

Variable valve train

 #135
20190003352
2019-01-03

Internal combustion engine

 #136
20190003351
2019-01-03

Variable valve operating apparatus

 #137
20190003347
2019-01-03

Camshaft driven pump for a hydraulic cam phaser

 #138
20180371960
2018-12-27

Camshaft and manufacturing method therefor

 #139
20180363519
2018-12-20

SWITCHING ROLLER FINGER FOLLOWER ECCENTRIC LATCH

 #140
20180363518
2018-12-20

VALVE TRAIN WITH VARIABLE VALVE ACTUATION

 #141
20180363517
2018-12-20

Variable valve train of a combustion engine

 #142
20180334933
2018-11-22

Multiple variable valve lift apparatus

 #143
20180320603
2018-11-08

Switching rocker arm having cantilevered rollers

 #144
20180320566
2018-11-08

Valve operating system providing variable valve lift and/or variable valve timing

 #145
20180320565
2018-11-08

Method of noise filtering a sliding camshaft actuator pin position output signal

 #146
20180320561
2018-11-08

Valve train device

 #147
20180306073
2018-10-25

Discrete variable valve lift engine systems and methods

 #148
20180306072
2018-10-25

LOW FRICTION SWITCHING ROLLER FINGER FOLLOWER FOR HIGH VALVE LIFT

 #149
20180306071
2018-10-25

Method for a diesel engine and diesel engine

 #150
20180306069
2018-10-25

Control device for internal combustion engine

 #151
20180291828
2018-10-11

Method for heating a sliding camshaft actuator

 #152
20180291776
2018-10-11

Variable valve gear

 #153
20180283509
2018-10-04

SHIFTING ELEMENT FOR SHIFTING A CAM SEGMENT

 #154
20180283265
2018-10-04

Internal combustion engine

 #155
20180283242
2018-10-04

Variable valve gear with braking cams

 #156
20180283240
2018-10-04

Valve drive for an internal combustion engine

 #157
20180283238
2018-10-04

Valve drive for an internal combustion engine

 #158
20180283236
2018-10-04

Method for retracting a sliding camshaft actuator pin

 #159
20180283235
2018-10-04

Internal combustion engine

 #160
20180283227
2018-10-04

Method for retracting a partially extended sliding camshaft actuator pin

 #161
20180283226
2018-10-04

Valve drive for an internal combustion engine

 #162
20180283225
2018-10-04

Control device for internal combustion engine

 #163
20180274478
2018-09-27

Valve operating system for multicylinder engine

 #164
20180274407
2018-09-27

Cam journal lubricant supply mechanism for engine

 #165
20180274404
2018-09-27

Valve drive for an internal combustion engine

 #166
20180274403
2018-09-27

Valve drive for an internal combustion engine

 #167
20180274393
2018-09-27

Internal combustion engine system

 #168
20180266280
2018-09-20

Variable valve control device for internal combustion engines

 #169
20180258803
2018-09-13

Sliding camshaft barrel position sensing

 #170
20180252125
2018-09-06

Internal combustion engine system

 #171
20180238205
2018-08-23

Internal combustion engine

 #172
20180238198
2018-08-23

Switchable rocker arm with a travel stop

 #173
20180230918
2018-08-16

Control device for internal combustion engine

 #174
20180230869
2018-08-16

Internal combustion engine system

 #175
20180230862
2018-08-16

Valve train for an internal combustion engine

 #176
20180223704
2018-08-09

Variable valve-operating device

 #177
20180216505
2018-08-02

Valve train for an internal combustion engine

 #178
20180216502
2018-08-02

Valve train for a reciprocating piston internal combustion engine, and method for valve control in a reciprocating piston internal combustion engine

 #179
20180202374
2018-07-19

Internal combustion engine system and control method for internal combustion engine

 #180
20180202329
2018-07-19

Internal combustion engine control system

 #181
20180195419
2018-07-12

Valvetrain with rocker arm housing magnetic latch

 #182
20180179963
2018-06-28

Four-stroke internal combustion engine including variable compression ratio and a vehicle

 #183
20180179922
2018-06-28

Variable valve actuation device for internal combustion engine

 #184
20180179921
2018-06-28

Variable valve mechanism for engine

 #185
20180179920
2018-06-28

Variable valve mechanism for engine

 #186
20180172478
2018-06-21

Electromagnetic actuator

 #187
20180163654
2018-06-14

Control device for internal combustion engine

 #188
20180163583
2018-06-14

Exhaust valve deactivation

 #189
20180156081
2018-06-07

Rocker assembly having improved durability

 #190
20180142583
2018-05-24

Sliding contact for electrically actuated rocker arm

 #191
20180142582
2018-05-24

Camshaft module

 #192
20180128133
2018-05-10

LATCH ORIENTATION MECHANISM

 #193
20180119585
2018-05-03

Device for adjusting a camshaft of an internal combustion engine

 #194
20180119584
2018-05-03

SWITCHING ROCKER ARM FOR INTERNAL EXHAUST GAS RECIRCULATION WITH SIMPLE LATCH CONTROL

 #195
20180108500
2018-04-19

Apparatus and methods for latching, and systems including the same

 #196
20180100414
2018-04-12

Multi-step sliding cam actuators for internal combustion engine assembly

 #197
20180094551
2018-04-05

Switchable roller finger follower with integrated leakage path for de-aeration

 #198
20180087887
2018-03-29

Electromagnetic actuator

 #199
20180080349
2018-03-22

Fluid diverter

 #200
20180058276
2018-03-01

DEVELOPMENT OF A SWITCHING ROLLER FINGER FOLLOWER FOR CYLINDER DEACTIVATION IN INTERNAL COMBUSTION ENGINES

 #201
20180058275
2018-03-01

Development of a switching roller finger follower for cylinder deactivation in internal combustion engines

 #202
20180051602
2018-02-22

Variable valve duration apparatus

 #203
20180051601
2018-02-22

System and method for improved gas exchange in cylinder deactivation applications

 #204
20180045089
2018-02-15

DEVELOPMENT OF A SWITCHING ROLLER FINGER FOLLOWER FOR CYLINDER DEACTIVATION IN INTERNAL COMBUSTION ENGINES

 #205
20180030863
2018-02-01

Method for assembling a camshaft in a module body

 #206
20180030861
2018-02-01

Latch interface for a valve actuating device

 #207
20180016949
2018-01-18

Electromagnetic actuator having clamping-free tappets

 #208
20180003088
2018-01-04

Rocker arm assembly for engine braking

 #209
20170362970
2017-12-21

Valve train for an internal combustion engine

 #210
20170362969
2017-12-21

Valve train for an internal combustion engine

 #211
20170362967
2017-12-21

Internal combustion engine

 #212
20170362964
2017-12-21

Valve drive device for an internal combustion engine

 #213
20170350284
2017-12-07

VALVE GEAR FOR ENGINE

 #214
20170342875
2017-11-30

Sliding camshaft

 #215
20170335779
2017-11-23

Lean-burn engine

 #216
20170328244
2017-11-16

Systems, methods and devices for rocker arm position sensing

 #217
20170321578
2017-11-09

Camshaft having at least one axially fixed sliding element

 #218
20170321577
2017-11-09

Camshaft having an axially guided sliding element

 #219
20170314425
2017-11-02

Camshaft comprising an axially guided sliding element

 #220
20170314424
2017-11-02

Method for installing a camshaft module

 #221
20170306812
2017-10-26

Variable valve lift apparatus

 #222
20170306809
2017-10-26

Switching rocker arm

 #223
20170298787
2017-10-19

Valve gear for engine and method of manufacturing rocker arms

 #224
20170298785
2017-10-19

Rocker arm assembly and components therefor

 #225
20170292416
2017-10-12

Variable valve mechanism of internal combustion engine

 #226
20170284241
2017-10-05

Internal combustion engine

 #227
20170276027
2017-09-28

Valve train for an internal combustion engine

 #228
20170268386
2017-09-21

Variable valve mechanism of internal combustion engine

 #229
20170248073
2017-08-31

Custom VVA rocker arms for left hand and right hand orientations

 #230
20170248043
2017-08-31

Shifting camshaft groove design for load reduction

 #231
20170241300
2017-08-24

Valvetrain with rocker arm housing magnetically actuated latch

 #232
20170234172
2017-08-17

Locking device for a switchable valve drive component

 #233
20170198613
2017-07-13

Valvetrain with variable valve actuation

 #234
20170191387
2017-07-06

Valve gear for engine

 #235
20170183991
2017-06-29

System for variable actuation of a valve of an internal-combustion engine

 #236
20170178779
2017-06-22

Electromagnetic actuator

 #237
20170167397
2017-06-15

Continuous variable valve duration apparatus and engine provided with the same

 #238
20170167325
2017-06-15

Internal combustion engine comprising a shifting cam system for variable valve actuation

 #239
20170167324
2017-06-15

Sliding cam system having two-stage actuator stroke

 #240
20170167323
2017-06-15

Continuous variable valve duration apparatus and engine provided with the same

 #241
20170159515
2017-06-08

Valve gear for engine

 #242
20170159505
2017-06-08

Method for arranging a camshaft in a camshaft module

 #243
20170152773
2017-06-01

Multiple variable valve lift apparatus

 #244
20170152772
2017-06-01

Multiple variable valve lift apparatus

 #245
20170152771
2017-06-01

Valve device for internal combustion engine

 #246
20170152770
2017-06-01

Multiple variable valve lift apparatus

 #247
20170145876
2017-05-25

Variable valve train with a rocker arm

 #248
20170138231
2017-05-18

Valve train having a sliding cam element

 #249
20170138230
2017-05-18

Development of a switching roller finger follower for cylinder deactivation in internal combustion engines

 #250
20170122224
2017-05-04

Camshaft slider control systems and methods

 #251
20170122143
2017-05-04

Variable valve mechanism

 #252
20170122136
2017-05-04

Variable valve mechanism

 #253
20170114676
2017-04-27

Sliding CAM recovery from short to ground on actuator low side

 #254
20170114674
2017-04-27

Switching rocker arm assembly having spring retaining configuration

 #255
20170089230
2017-03-30

Continuous variable valve duration apparatus and engine provided with the same

 #256
20170081996
2017-03-23

VALVE TRAIN ASSEMBLY

 #257
20170074128
2017-03-16

Cylinder deactivation deactivating roller finger follower having improved packaging

 #258
20170009612
2017-01-12

Continuous variable valve timing apparatus and engine provided with the same

 #259
20170002698
2017-01-05

Valve train assembly

 #260
20160369666
2016-12-22

Actuator for axial displacement of an object

 #261
20160363011
2016-12-15

Multiple variable valve lift apparatus

 #262
20160348541
2016-12-01

Valve switching apparatus

 #263
20160333803
2016-11-17

System and method for determining an oil contamination level of an engine based on a switching period of a valve lift actuator to improve engine startups

 #264
20160322146
2016-11-03

Electromagnetic actuating mechanism

 #265
20160319705
2016-11-03

Adjustable valve device of internal combustion engine

 #266
20160298507
2016-10-13

Method and assembly for monitoring an actuator device

 #267
20160290185
2016-10-06

Adjustable camshaft

 #268
20160290183
2016-10-06

Variable-stroke valve train of an internal combustion engine

 #269
20160281553
2016-09-29

SLIDING CAM SYSTEM HAVING AN EXTENDED ENGAGEMENT REGION

 #270
20160273414
2016-09-22

Valve mechanism for internal combustion engine

 #271
20160265397
2016-09-15

Adjusting element for the axial displacement of a camshaft supported displaceable along a camshaft axis

 #272
20160243659
2016-08-25

Direct-acting valve lifter of internal combustion engine

 #273
20160230679
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