ClassID:

137212

F01L2001/34433 - CPC Classification

Classification description:

Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force; Details relating to the hydraulic feeding circuit; Oil control valves Location oil control valves

Recent Application in this class:
#1
20250027432
2025-01-23

Camshaft phaser having non-return valves

#2
20240426229
2024-12-26

Camshaft adjuster with reset function

#3
20240392705
2024-11-28

FLUID CONTROL VALVE UNIT AND VALVE TIMING CHANGE DEVICE

#4
20240263570
2024-08-08

VARIABLE CAM TIMING PHASER AND SYSTEM INCLUDING THE SAME

#5
20240167430
2024-05-23

Internal combustion engine

#6
20230417161
2023-12-28

Installation structure for oil control valve

#7
20230366334
2023-11-16

HYDRAULIC VARIABLE CAMSHAFT TIMING WITH A TEMPERATURE BASED HYDRAULIC SWITCH

#8
20230287809
2023-09-14

Fluid control valve unit and valve timing changing device

#9
20230279791
2023-09-07

Fluid control valve and valve timing changing device

#10
20230258108
2023-08-17

Oil pressure actuated phaser with a lock pin shutoff

#11
20230250742
2023-08-10

VARIABLE VALVE TIMING SYSTEM

#12
20220316367
2022-10-06

HYDRAULICALLY-ACTUATED VCT SYSTEM INCLUDING A SPOOL VALVE

#13
20220298933
2022-09-22

Recirculating hydraulic fluid control valve

#14
20220282642
2022-09-08

Valve timing adjustment device

#15
20220065141
2022-03-03

Apparatus and method for controlling a cam

#16
20220065140
2022-03-03

Control valve assembly of a variable cam timing phaser

#17
20220042427
2022-02-10

Insertion piece for camshaft phaser and camshaft phaser

#18
20220025789
2022-01-27

Camshaft phase regulator

#19
20210388857
2021-12-16

Recirculating hydraulic fluid control valve

#20
20210388744
2021-12-16

Recirculating hydraulic fluid control valve

#21
20210277808
2021-09-09

Hybrid phaser with hydraulic lock in an intermediate position

#22
20210231032
2021-07-29

Variable camshaft timing valve assembly

#23
20210215070
2021-07-15

Recirculating hydraulic fluid control valve

#24
20210180476
2021-06-17

Fluid control valve, and valve timing adjusting device employing same

#25
20210087954
2021-03-25

Support arrangement for an actuator of a cam phaser

#26
20200400044
2020-12-24

Combination oil control valve and fuel injector driver

#27
20200370450
2020-11-26

Oil control valve for cam phaser

#28
20200318503
2020-10-08

Variable cam timing phaser having two central control valves

#29
20200263573
2020-08-20

Valve timing change device

#30
20200208545
2020-07-02

Cam phaser kit

#31
20200191024
2020-06-18

Double slope stopper usable with a variable cam timing system

#32
20200173315
2020-06-04

Apparatus for camshaft timing adjustment with built in pump

#33
20200173314
2020-06-04

Valve assembly for controlling a camshaft timing apparatus

#34
20200141290
2020-05-07

CHECK VALVE AND VALVE TIMING CONTROLLER

#35
20200141289
2020-05-07

Valve timing controller

#36
20200123937
2020-04-23

Hydraulic camshaft adjuster

#37
20200072094
2020-03-05

Valve timing adjustment device

#38
20200003089
2020-01-02

Oil flow system for engine cylinder deactivation

#39
20190353061
2019-11-21

CONTROL VALVE FOR A CAMSHAFT ADJUSTER

#40
20190331008
2019-10-31

Camshaft arrangement

#41
20190323392
2019-10-24

Valve timing adjustment device

#42
20190277205
2019-09-12

Compression release valvetrain design

#43
20190277167
2019-09-12

Zero pressure unlocking system for a phaser

#44
20190257222
2019-08-22

Center bolt oil control valve to control a cam phaser with a calibration cap having a pressure check valve and filter

#45
20190234244
2019-08-01

Valve timing controller

#46
20190186308
2019-06-20

High frequency switching variable cam timing phaser

#47
20190170029
2019-06-06

Cam phaser

#48
20190162084
2019-05-30

Cam shaft phase setter comprising an annular reflux valve

#49
20190145290
2019-05-16

Variable cam timing phaser utilizing series-coupled check valves

#50
20190128149
2019-05-02

Rotational hydraulic logic device and variable cam timing phaser utilizing such a device

#51
20190107014
2019-04-11

Camshaft phaser using both cam torque and engine oil pressure

#52
20190093524
2019-03-28

Piston for a hydraulic unit of a cam phaser and cam phaser

#53
20190085736
2019-03-21

Oil control valve to control a cam phaser with a spool positioned by an external actuator and having a groove

#54
20190063270
2019-02-28

CAMSHAFT PHASER

#55
20190048765
2019-02-14

Camshaft adjusting system with means for catching hydraulic fluid draining from a valve in order to directly recirculate the fluid into the camshaft adjuster

#56
20190040771
2019-02-07

Camshaft adjuster comprising a spring

#57
20180363514
2018-12-20

Oil control valve to control a cam phaser with a spool positioned by external actuator

#58
20180363512
2018-12-20

Valve timing change device

#59
20180355770
2018-12-13

Oil flow system for engine cylinder deactivation

#60
20180355767
2018-12-13

Camshaft adjuster

#61
20180355766
2018-12-13

Valve

#62
20180334931
2018-11-22

Cam phaser having a retention feature for aiding assembly

#63
20180313263
2018-11-01

Mounting structure of oil control valve unit and motorcycle

#64
20180313236
2018-11-01

Mounting structure of oil control valve unit and motorcycle

#65
20180313235
2018-11-01

Mounting structure of oil control valve unit and motorcycle

#66
20180283231
2018-10-04

Camshaft adjusting device

#67
20180274398
2018-09-27

Variable valve timing control device

#68
20180266285
2018-09-20

System and method for a phase control apparatus of a cam timing system

#69
20180258801
2018-09-13

Actuator for cam phaser and cam phaser

#70
20180245487
2018-08-30

Camshaft adjusting device

#71
20180238201
2018-08-23

Variable valve timing control device

#72
20180187610
2018-07-05

Internal-combustion engine valve timing control apparatus

#73
20180187578
2018-07-05

Control valve for a camshaft adjuster

#74
20180171833
2018-06-21

Camshaft adjuster link to a double camshaft

#75
20180156080
2018-06-07

Valve opening/closing timing control device

#76
20180149045
2018-05-31

Valve opening and closing timing control apparatus

#77
20180135474
2018-05-17

Valve opening/closing timing control apparatus

#78
20180135473
2018-05-17

Valve opening/closing timing control apparatus

#79
20180135472
2018-05-17

Valve opening/closing timing control apparatus

#80
20180135471
2018-05-17

Valve opening/closing timing control apparatus

#81
20180112563
2018-04-26

Valve timing regulation device

#82
20180106168
2018-04-19

Composite structure and valve timing adjustment device having the same

#83
20180106167
2018-04-19

Check valve plate positioner for camshaft phaser

#84
20180080352
2018-03-22

Camshaft phasing system including idler gear phaser for internal combustion engines

#85
20180073402
2018-03-15

Multi-mode variable camshaft timing device with two locking positions

#86
20180058274
2018-03-01

Hydraulically biased camshaft phaser

#87
20180058272
2018-03-01

Camshaft phaser

#88
20180045087
2018-02-15

Camshaft adjuster

#89
20180043374
2018-02-15

Particle separating system

#90
20180003090
2018-01-04

Control valve having an outflow channel

#91
20170356313
2017-12-14

Central valve for a camshaft adjustment device

#92
20170342870
2017-11-30

Control valve

#93
20170268388
2017-09-21

Valve opening and closing timing control apparatus

#94
20170260884
2017-09-14

Cam phaser

#95
20170260883
2017-09-14

Hydraulic valve for a cam phaser

#96
20170260882
2017-09-14

Piston for a hydraulic valve for a cam phaser and hydraulic valve for the cam phaser

#97
20170254233
2017-09-07

Camshaft adjuster

#98
20170254232
2017-09-07

Camshaft adjuster having two ball joints

#99
20170241303
2017-08-24

Control valve with check valve

#100
20170234174
2017-08-17

Valve opening and closing timing control apparatus

#101
20170226902
2017-08-10

Control valve for valve timing adjusting device of internal combustion engine

#102
20170218797
2017-08-03

Hydraulic control valve and valve-timing control device for internal-combustion engine using hydraulic control valve

#103
20170211432
2017-07-27

Apparatus and method of adjusting valve timing for internal combustion engine

#104
20170211430
2017-07-27

Camshaft adjuster having a chamber short-circuiting, pressure-controlled control unit

#105
20170204749
2017-07-20

Oil drain structure of valve timing adjusting device for internal combustion engine

#106
20170198612
2017-07-13

Valve opening/closing timing control apparatus

#107
20170198611
2017-07-13

Valve opening and closing timing control apparatus

#108
20170183987
2017-06-29

Valve opening and closing timing control apparatus

#109
20170183986
2017-06-29

Locking structure of valve timing adjustment apparatus for internal combustion engine

#110
20170183984
2017-06-29

Valve opening and closing timing control apparatus

#111
20170183983
2017-06-29

Valve opening and closing timing control apparatus

#112
20170175593
2017-06-22

Valve opening and closing timing control apparatus

#113
20170159510
2017-06-08

Camshaft adjustment device for an internal combustion engine

#114
20170145872
2017-05-25

Valve opening/closing timing control apparatus

#115
20170130621
2017-05-11

Valve opening and closing timing control apparatus

#116
20170130620
2017-05-11

Valve opening and closing timing control apparatus

#117
20170130618
2017-05-11

Camshaft phaser

#118
20170130617
2017-05-11

Camshaft phaser

#119
20170122138
2017-05-04

Valve opening and closing timing control apparatus

#120
20170114677
2017-04-27

Camshaft adjuster including a discharge valve

#121
20170058727
2017-03-02

Multi-mode variable cam timing phaser

#122
20170037748
2017-02-09

Camshaft adjuster

#123
20170037747
2017-02-09

Variable valve actuation apparatus for internal combustion engine

#124
20170030230
2017-02-02

Central valve for a camshaft adjuster having central locking

#125
20170022854
2017-01-26

Control valve for valve timing control device and valve timing control device for internal combustion engine

#126
20170022851
2017-01-26

Intermediate phase adjustment apparatus of CVVT

#127
20170022849
2017-01-26

Camshaft phaser with a rotary valve spool

#128
20170002700
2017-01-05

Camshaft adjusting device, combustion engine and assembly method

#129
20160376945
2016-12-29

CVVT system

#130
20160376942
2016-12-29

Apparatus for opening and closing channel

#131
20160376941
2016-12-29

Method of controlling lock pin of continuously variable valve timing system

#132
20160348544
2016-12-01

Method and system for variable cam timing device

#133
20160348542
2016-12-01

Flow passage partition structure and fluid control valve

#134
20160334022
2016-11-17

Control valve for a camshaft adjuster

#135
20160298505
2016-10-13

Valve timing adjusting device

#136
20160298504
2016-10-13

Valve open/close timing control device

#137
20160245131
2016-08-25

Cam shaft phaser with mid-position and retard lock position

#138
20160245130
2016-08-25

Camshaft phaser

#139
20160194985
2016-07-07

Cam shaft phase setter comprising a control valve for hydraulically adjusting the phase position of a cam shaft

#140
20160153369
2016-06-02

Method and system for controlling continuously variable valve timing

#141
20160146067
2016-05-26

Camshaft phaser with position control valve

#142
20160130989
2016-05-12

Camshaft phaser

#143
20160116079
2016-04-28

Arrangement of an electromagnet for controlling a central valve

#144
20160108770
2016-04-21

Valve opening/closing timing control device

#145
20160108769
2016-04-21

Valve opening/closing timing control device

#146
20160076408
2016-03-17

Valve opening and closing timing control device

#147
20160061064
2016-03-03

Valve timing control apparatus

#148
20160061063
2016-03-03

Valve timing controller

#149
20160053640
2016-02-25

Arrangement of a volume accumulator in a camshaft adjuster

#150
20160025017
2016-01-28

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

#151
20160024976
2016-01-28

Actuator for hydraulic valve of cam phaser and hydraulic valve with actuator for cam phaser

#152
20160010516
2016-01-14

Valve timing control apparatus

#153
20150369092
2015-12-24

Hydraulic valve for an internal combustion engine

#154
20150330267
2015-11-19

Cam phaser with electromagnetically actuated hydraulic valve

#155
20150300212
2015-10-22

Camshaft adjusting device and central valve for a camshaft adjusting device

#156
20150267571
2015-09-24

Control valve for a camshaft adjuster system

#157
20150233269
2015-08-20

Cam shaft phase setter comprising a control valve for hydraulically adjusting the phase position of a cam shaft

#158
20150204217
2015-07-23

Control valve of a camshaft adjuster

#159
20150192042
2015-07-09

Five-way oil control valve with integrated venting spool

#160
20150159523
2015-06-11

Engine

#161
20150129069
2015-05-14

Control valve for a camshaft adjuster

#162
20150128889
2015-05-14

Holding structure of oil control valve

#163
20150075460
2015-03-19

Valve timing control apparatus

#164
20150068476
2015-03-12

Engine having continuously variable valve timing mechanism

#165
20150059669
2015-03-05

Variable valve timing control device

#166
20150034033
2015-02-05

Variable valve timing control device

#167
20140373796
2014-12-25

Valve timing control apparatus

#168
20140345550
2014-11-27

Valve timing control apparatus

#169
20140311594
2014-10-23

Central valve for pivot motor actuator

#170
20140311333
2014-10-23

Central valve for pivot motor actuator

#171
20140299804
2014-10-09

Electromagnetic actuator

#172
20140230764
2014-08-21

Sealing device and camshaft adjuster

#173
20140158075
2014-06-12

Oscillating motor adjuster

#174
20140157980
2014-06-12

Rotary actuator with hydraulic valve

#175
20140150742
2014-06-05

Valve timing control apparatus

#176
20140123920
2014-05-08

CAMSHAFT PHASER WITH CENTRALLY LOCATED LOCK PIN VALVE SPOOL

#177
20140090613
2014-04-03

Valve timing controller

#178
20140090612
2014-04-03

Valve timing control apparatus

#179
20140090611
2014-04-03

Valve timing controller

#180
20140083385
2014-03-27

Camshaft phaser with coaxial control valves

#181
20140076254
2014-03-20

Valve opening-closing timing control apparatus

#182
20140007828
2014-01-09

Camshaft assembly and method for producing a camshaft assembly

#183
20130319355
2013-12-05

Engine with variable valve timing mechanism

#184
20130312678
2013-11-28

Control valve for hydraulic device

#185
20130285590
2013-10-31

Reference angle detecting device

#186
20130220247
2013-08-29

Fluid-pressure-operated valve timing controller

#187
20130213330
2013-08-22

Central valve for a camshaft adjuster

#188
20130199478
2013-08-08

Valve timing controller

#189
20130199477
2013-08-08

Camshaft adjuster having a non-return valve

#190
20130199475
2013-08-08

Filling of a volume accumulator in a camshaft adjuster

#191
20130199471
2013-08-08

Configuration of a tank connection in a camshaft adjuster with volume accumulator

#192
20130199470
2013-08-08

Arrangement of a volume accumulator

#193
20130199469
2013-08-08

Construction of a hydraulic oil channel between a central valve and a volume accumulator of a camshaft adjuster

#194
20130199468
2013-08-08

External volume accumulator configuration in a camshaft adjuster

#195
20130192551
2013-08-01

Valve timing controller and assembling method of the same

#196
20130134338
2013-05-30

Valve timing controller

#197
20130118622
2013-05-16

Non-return valve and hydraulic valve with a fitted non-return valve

#198
20130112163
2013-05-09

Valve insert, and valve having a valve insert of this type

#199
20130068975
2013-03-21

Electromagnetic actuator

#200
20130068189
2013-03-21

Cylinder head assembly having an oil routing plug

#201
20130068184
2013-03-21

Valve timing controller

#202
20130068180
2013-03-21

Camshaft with camshaft adjuster

#203
20130000578
2013-01-03

Valve timing control apparatus and method

#204
20120325169
2012-12-27

Control valve of a device for changing the relative angular position of a camshaft with respect to a crankshaft of an internal combustion engine

#205
20120318221
2012-12-20

Camshaft adjuster

#206
20120312262
2012-12-13

Camshaft adjusting device

#207
20120261009
2012-10-18

Hydraulic control device

#208
20120255509
2012-10-11

Camshaft phaser with independent phasing and lock pin control

#209
20120234275
2012-09-20

Camshaft phaser with coaxial control valves

#210
20120227693
2012-09-13

Device for variably adjusting the control times of gas exchange valves of an internal combustion engine

#211
20120210962
2012-08-23

Fastening assembly of a camshaft adjuster

#212
20120199231
2012-08-09

VOLUME ACCUMULATOR

#213
20120199086
2012-08-09

Valve timing control apparatus

#214
20120186547
2012-07-26

Variable valve timing device

#215
20120186545
2012-07-26

Valve timing control apparatus

#216
20120167845
2012-07-05

Cylinder head cover module with integrated valve train

#217
20120152192
2012-06-21

Engine equipped with variable valvetrain

#218
20120145105
2012-06-14

Control valve

#219
20120145100
2012-06-14

Device for adjusting the rotational angular position of a cam shaft

#220
20120145099
2012-06-14

Valve timing control apparatus

#221
20120143463
2012-06-07

Startability improving method for GDI engine using electric CVVT control

#222
20120132165
2012-05-31

Method for operating a camshaft phaser

#223
20120111296
2012-05-10

Central valve of a camshaft adjuster of an internal combustion engine

#224
20120111295
2012-05-10

Device for variably adjusting the control times of gas exchange valves of an internal combustion device

#225
20120073535
2012-03-29

Control valve for controlling pressure-medium flows comprising an integrated check valve

#226
20120060779
2012-03-15

VARIABLE VALVE TIMING CONTROL APPARATUS

#227
20120055427
2012-03-08

Control valve for a device for variably adjusting the control times of gas-exchange valves of an internal combustion engine

#228
20120048410
2012-03-01

Oil control valve and hydraulic control apparatus

#229
20120017857
2012-01-26

Valve timing control device of internal combustion engine

#230
20110303169
2011-12-15

Flow rate control valve

#231
20110266479
2011-11-03

Hydraulic valve

#232
20110247580
2011-10-13

Control valve mounting system

#233
20110233447
2011-09-29

Valve case for oil control valve

#234
20110220046
2011-09-15

Cam shaft phase setter comprising a control valve for hydraulically adjusting the phase position of a cam shaft

#235
20110203540
2011-08-25

VALVE TIMING ADJUSTER

#236
20110197846
2011-08-18

Control Valve Apparatus

#237
20110197840
2011-08-18

Engine equipped with variable valve timing mechanism

#238
20110192366
2011-08-11

Phase adjustment device

#239
20110168276
2011-07-14

Oil control valve mounting arrangement

#240
20110139101
2011-06-16

Camshaft adjuster

#241
20110132303
2011-06-09

DEVICE FOR VARIABLE ADJUSTMENT OF THE TIMING OF GAS EXCHANGE VALVES OF AN INTERNAL COMBUSTION ENGINE

#242
20110114047
2011-05-19

CAMSHAFT INSERT

#243
20110079189
2011-04-07

Central valve of a camshaft adjuster of an internal combustion engine

#244
20110017156
2011-01-27

Variable camshaft timing device with hydraulic lock in an intermediate position

#245
20100319641
2010-12-23

Variable valve timing control apparatus

#246
20100294387
2010-11-25

Control valve for a camshaft adjuster

#247
20100243934
2010-09-30

Structure of solenoid valve attached to resin cover by insert-molding

#248
20100212616
2010-08-26

Camshaft phasing system

#249
20100192887
2010-08-05

Engine

#250
20100186699
2010-07-29

Variable cam timing controls mounted in the camshaft

#251
20100186697
2010-07-29

Valve timing control apparatus

#252
20100186692
2010-07-29

Valve operation control system for internal combustion engine

#253
20100175651
2010-07-15

Valve timing controller

#254
20100170458
2010-07-08

Concentric cam with check valves in the spool for a phaser

#255
20100084019
2010-04-08

CENTRAL SPOOL VALVE

#256
20100043736
2010-02-25

Camshaft system for internal combustion engine

#257
20100024751
2010-02-04

Oil circuit for continuous variable valve timing device

#258
20100019186
2010-01-28

ENGINE VALVE ASSEMBLY WITH VALVE CAN MOUNTABLE TO AN ENGINE COVER

#259
20100012063
2010-01-21

Cam cap and oil passage connection structure

#260
20090314235
2009-12-24

Hydraulic control system for engine cam phasing

#261
20090235892
2009-09-24

Cylinder head cover

#262
20090223470
2009-09-10

Twin cam phaser for dual independent cam phasing

#263
20090186725
2009-07-23

MULTI-UTILITY CAMSHAFT CAP FOR INTERNAL COMBUSTION ENGINE

#264
20090151680
2009-06-18

Oil gallery for variable valve timing apparatus of a cylinder head

#265
20090151672
2009-06-18

Oil supply structure for continuous variable valve timing apparatus and cylinder head employing the same

#266
20090145386
2009-06-11

VALVE TIMING ADJUSTING APPARATUS

#267
20090134349
2009-05-28

Control valve for a camshaft adjuster

#268
20090093940
2009-04-09

Vehicle and vehicle control method

#269
20090007873
2009-01-08

Compact lash adjuster feed channel apparatus

#270
20080271690
2008-11-06

Camshaft adjuster for an internal combustion engine with integrated valve slide

#271
20080271689
2008-11-06

Control valve for a device for variably adjusting the valve timing for gas exchange valves in an internal combustion engine

#272
20080251045
2008-10-16

Oil feed system for a hydraulically actuated cam phaser

#273
20080245983
2008-10-09

Hydraulic directional valve

#274
20080245324
2008-10-09

Control Valve

#275
20080236529
2008-10-02

Control valve for a device for changing the control times of an internal combustion engine

#276
20080236524
2008-10-02

V-type engine and motorcycle incorporating same

#277
20080236523
2008-10-02

Multi-cylinder engine with cylinder pausing function

#278
20080236522
2008-10-02

V-type engine and motorcycle incorporating same

#279
20080216783
2008-09-11

Variable valve timing mechanism-equipped engine

#280
20080178828
2008-07-31

Single hydraulic circuit module for dual lift of multiple engine valves

#281
20080149056
2008-06-26

Camshaft adjuster control valve arrangement

#282
20080135003
2008-06-12

Oil supply circuit for cylinder deactivation system

#283
20080110426
2008-05-15

Mounting module of oil control valve for tappet control in cylinder deactivation engine

#284
20080092837
2008-04-24

Valve event reduction through operation of a fast-acting camshaft phaser

#285
20080088095
2008-04-17

Sleeve and cylinder head cover

#286
20080066572
2008-03-20

Valve timing control system

#287
20080060595
2008-03-13

Mounting structure of functional device for internal combustion engine

#288
20070283920
2007-12-13

Oil supply for internal combustion engine camshaft

#289
20070272183
2007-11-29

Camshaft

#290
20070266970
2007-11-22

Valve timing controlling apparatus

#291
20070261652
2007-11-15

Compact lash adjuster feed channel apparatus

#292
20070204824
2007-09-06

Camshaft adjuster

#293
20070186887
2007-08-16

Camshaft phaser having designated contact vane

#294
20070113812
2007-05-24

Cylinder head cover

#295
20070095315
2007-05-03

Control valve for an apparatus for variable setting of the control times of gas exchange valves of an internal combustion engine

#296
20070068474
2007-03-29

Method and apparatus for diagnosing valve lifter malfunction in a lift on demand system

#297
20060207538
2006-09-21

Camshaft to phaser coupling

#298
20060185471
2006-08-24

Camshaft assembly

#299
20060112922
2006-06-01

Cylinder head cover

#300
20060112916
2006-06-01

Cylinder head cover and method for mounting cylinder head cover to cylinder head