Patents-Review.com
ClassID:

137211 ⎘

F01L2001/3443 - 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 Solenoid driven 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
20230417161
2023-12-28

Installation structure for oil control valve

 #4
20230287809
2023-09-14

Fluid control valve unit and valve timing changing device

 #5
20230279791
2023-09-07

Fluid control valve and valve timing changing device

 #6
20230258108
2023-08-17

Oil pressure actuated phaser with a lock pin shutoff

 #7
20230250741
2023-08-10

Variable valve timing system

 #8
20230250740
2023-08-10

Variable valve timing system

 #9
20230041351
2023-02-09

Hydraulic oil control valve and valve timing adjusting device

 #10
20230014627
2023-01-19

Hydraulic oil control valve and valve timing adjustment device

 #11
20220316367
2022-10-06

HYDRAULICALLY-ACTUATED VCT SYSTEM INCLUDING A SPOOL VALVE

 #12
20220298933
2022-09-22

Recirculating hydraulic fluid control valve

 #13
20220282644
2022-09-08

Valve timing adjusting device

 #14
20220170391
2022-06-02

Self-resetting single-valve hydraulic drive device and method based on primary and secondary pistons for push rod engine

 #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
20220010697
2022-01-13

Hydraulic oil control valve and valve timing adjustment device

 #18
20220010696
2022-01-13

Hydraulic oil control valve and valve timing adjustment device

 #19
20220010695
2022-01-13

Hydraulic oil control valve and valve timing adjustment device

 #20
20220010693
2022-01-13

HYDRAULIC OIL CONTROL VALVE AND VALVE TIMING ADJUSTMENT DEVICE

 #21
20210388857
2021-12-16

Recirculating hydraulic fluid control valve

 #22
20210388744
2021-12-16

Recirculating hydraulic fluid control valve

 #23
20210324771
2021-10-21

Advance locked spool valve pump phaser with hydraulic detent valve

 #24
20210277808
2021-09-09

Hybrid phaser with hydraulic lock in an intermediate position

 #25
20210215070
2021-07-15

Recirculating hydraulic fluid control valve

 #26
20210180476
2021-06-17

Fluid control valve, and valve timing adjusting device employing same

 #27
20210148255
2021-05-20

Control apparatus for camshaft phaser

 #28
20210131581
2021-05-06

Electromagnetic switching valve

 #29
20210087954
2021-03-25

Support arrangement for an actuator of a cam phaser

 #30
20200408115
2020-12-31

Valve device

 #31
20200370450
2020-11-26

Oil control valve for cam phaser

 #32
20200326012
2020-10-15

AN ELECTROHYDRAULIC VALVE WITH ADJUSTABLE PERFORMANCE

 #33
20200318503
2020-10-08

Variable cam timing phaser having two central control valves

 #34
20200182104
2020-06-11

Camshaft phaser

 #35
20200149437
2020-05-14

Method and system for a continuously variable valve lift system

 #36
20200141289
2020-05-07

Valve timing controller

 #37
20200123937
2020-04-23

Hydraulic camshaft adjuster

 #38
20200095906
2020-03-26

Oil reservoir for camshaft phaser

 #39
20200088072
2020-03-19

Control system and control method for hydraulic variable valve

 #40
20200088071
2020-03-19

VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

 #41
20200063885
2020-02-27

Solenoid valve

 #42
20200018668
2020-01-16

Device for determining normality of electromagnetic control valve

 #43
20190376421
2019-12-12

Camshaft adjustment device for an internal combustion engine

 #44
20190353060
2019-11-21

Variable valve timing control device

 #45
20190331008
2019-10-31

Camshaft arrangement

 #46
20190323392
2019-10-24

Valve timing adjustment device

 #47
20190284969
2019-09-19

Engine with variable valve timing mechanism

 #48
20190234244
2019-08-01

Valve timing controller

 #49
20190186308
2019-06-20

High frequency switching variable cam timing phaser

 #50
20190186307
2019-06-20

Variable cam timing system and method for operation of said system

 #51
20190186306
2019-06-20

Internal combustion engine

 #52
20190153908
2019-05-23

System for controlling variable valve apparatus and oil control valve for the same

 #53
20190128149
2019-05-02

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

 #54
20190107014
2019-04-11

Camshaft phaser using both cam torque and engine oil pressure

 #55
20190101458
2019-04-04

System and method for engine oil temperature estimation

 #56
20190085736
2019-03-21

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

 #57
20190063270
2019-02-28

CAMSHAFT PHASER

 #58
20190055967
2019-02-21

Electrohydraulic valve and method for producing the electrohydraulic valve

 #59
20190055859
2019-02-21

Electrohydraulic valve and method for producing the electrohydraulic valve

 #60
20190017457
2019-01-17

Controller for internal combustion engine

 #61
20190003348
2019-01-03

Variable camshaft timing device with two locking positions

 #62
20190003347
2019-01-03

Camshaft driven pump for a hydraulic cam phaser

 #63
20180363514
2018-12-20

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

 #64
20180363512
2018-12-20

Valve timing change device

 #65
20180313263
2018-11-01

Mounting structure of oil control valve unit and motorcycle

 #66
20180313236
2018-11-01

Mounting structure of oil control valve unit and motorcycle

 #67
20180313235
2018-11-01

Mounting structure of oil control valve unit and motorcycle

 #68
20180306346
2018-10-25

Pressure compensated switching solenoid valve

 #69
20180283232
2018-10-04

Switched cushion stop

 #70
20180274398
2018-09-27

Variable valve timing control device

 #71
20180274397
2018-09-27

Device and method for fast position control of a hydraulic actuator

 #72
20180266285
2018-09-20

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

 #73
20180258804
2018-09-13

Oil supply control device of engine

 #74
20180258801
2018-09-13

Actuator for cam phaser and cam phaser

 #75
20180254133
2018-09-06

Electromagnetic control device

 #76
20180245488
2018-08-30

Variable valve timing control device

 #77
20180238244
2018-08-23

Control unit for internal combustion engine

 #78
20180238201
2018-08-23

Variable valve timing control device

 #79
20180187610
2018-07-05

Internal-combustion engine valve timing control apparatus

 #80
20180172175
2018-06-21

Valve assembly with vent port between supply port and control port

 #81
20180171835
2018-06-21

Hydraulic pressure control valve and internal-combustion engine valve timing control apparatus

 #82
20180156080
2018-06-07

Valve opening/closing timing control device

 #83
20180149043
2018-05-31

Control valve

 #84
20180135474
2018-05-17

Valve opening/closing timing control apparatus

 #85
20180135473
2018-05-17

Valve opening/closing timing control apparatus

 #86
20180135471
2018-05-17

Valve opening/closing timing control apparatus

 #87
20180135470
2018-05-17

Valve timing control device for internal combustion engine

 #88
20180112563
2018-04-26

Valve timing regulation device

 #89
20180080352
2018-03-22

Camshaft phasing system including idler gear phaser for internal combustion engines

 #90
20180073402
2018-03-15

Multi-mode variable camshaft timing device with two locking positions

 #91
20180058344
2018-03-01

Hydraulic control system for engine

 #92
20180058274
2018-03-01

Hydraulically biased camshaft phaser

 #93
20180058273
2018-03-01

Systems and methods for Cam phasing control

 #94
20180051644
2018-02-22

Method for diagnosing variable valve timing system

 #95
20180051599
2018-02-22

Valve opening and closing timing control apparatus

 #96
20180043374
2018-02-15

Particle separating system

 #97
20180003090
2018-01-04

Control valve having an outflow channel

 #98
20170370253
2017-12-28

Valve timing control device for internal combustion engine

 #99
20170356563
2017-12-14

Clip filter for hydraulic valve and hydraulic valve with clip filter

 #100
20170356313
2017-12-14

Central valve for a camshaft adjustment device

 #101
20170345538
2017-11-30

Central actuator for cam phaser

 #102
20170342871
2017-11-30

CAMSHAFT PHASE REGULATOR

 #103
20170342870
2017-11-30

Control valve

 #104
20170307100
2017-10-26

Electromagnetic valve and fixing structure

 #105
20170298788
2017-10-19

VALVE OPENING/CLOSING TIMING CONTROL APPARATUS

 #106
20170268388
2017-09-21

Valve opening and closing timing control apparatus

 #107
20170268387
2017-09-21

INTERNAL COMBUSTION ENGINE WITH A CAMSHAFT PHASER

 #108
20170260882
2017-09-14

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

 #109
20170254436
2017-09-07

Oil control valve for supplying oil at end portion and assembly method thereof

 #110
20170241301
2017-08-24

Electromagnetic adjusting device

 #111
20170234174
2017-08-17

Valve opening and closing timing control apparatus

 #112
20170226902
2017-08-10

Control valve for valve timing adjusting device of internal combustion engine

 #113
20170218797
2017-08-03

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

 #114
20170211432
2017-07-27

Apparatus and method of adjusting valve timing for internal combustion engine

 #115
20170211431
2017-07-27

Oil supply device for engine

 #116
20170204749
2017-07-20

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

 #117
20170198612
2017-07-13

Valve opening/closing timing control apparatus

 #118
20170191386
2017-07-06

Method and system for variable cam timing device

 #119
20170183987
2017-06-29

Valve opening and closing timing control apparatus

 #120
20170183985
2017-06-29

Valve timing adjustment apparatus for internal combustion engine

 #121
20170183984
2017-06-29

Valve opening and closing timing control apparatus

 #122
20170175594
2017-06-22

Method and system for variable cam timing device

 #123
20170175593
2017-06-22

Valve opening and closing timing control apparatus

 #124
20170159579
2017-06-08

Central locking for a camshaft adjuster

 #125
20170138275
2017-05-18

Control device for internal combustion engine and method of controlling internal combustion engine

 #126
20170130622
2017-05-11

Hydraulic valve for the cam phaser

 #127
20170130621
2017-05-11

Valve opening and closing timing control apparatus

 #128
20170130620
2017-05-11

Valve opening and closing timing control apparatus

 #129
20170122140
2017-05-04

Variable valve timing apparatus

 #130
20170122138
2017-05-04

Valve opening and closing timing control apparatus

 #131
20170107870
2017-04-20

Method and system for variable cam timing device

 #132
20170107866
2017-04-20

Variable valve duration system and engine provided with the same

 #133
20170089226
2017-03-30

Control apparatus and control method for variable valve mechanism

 #134
20170058727
2017-03-02

Multi-mode variable cam timing phaser

 #135
20170022854
2017-01-26

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

 #136
20170022852
2017-01-26

CVVT apparatus for engine

 #137
20170016359
2017-01-19

System for controlling valve opening/closing timing

 #138
20170009786
2017-01-12

Screen for hydraulic valve and hydraulic valve

 #139
20170002700
2017-01-05

Camshaft adjusting device, combustion engine and assembly method

 #140
20160376944
2016-12-29

Variable valve timing control device of internal combustion engine

 #141
20160376941
2016-12-29

Method of controlling lock pin of continuously variable valve timing system

 #142
20160348544
2016-12-01

Method and system for variable cam timing device

 #143
20160341079
2016-11-24

Device for controlling valve timing of engine

 #144
20160298505
2016-10-13

Valve timing adjusting device

 #145
20160298504
2016-10-13

Valve open/close timing control device

 #146
20160273417
2016-09-22

Valve timing control device for internal combustion engine

 #147
20160252189
2016-09-01

Electromagnetic valve and fixing structure

 #148
20160222835
2016-08-04

Valve timing control device for internal combustion engine, and fastening structure

 #149
20160153369
2016-06-02

Method and system for controlling continuously variable valve timing

 #150
20160146070
2016-05-26

Control device for internal combustion engine

 #151
20160116079
2016-04-28

Arrangement of an electromagnet for controlling a central valve

 #152
20160108770
2016-04-21

Valve opening/closing timing control device

 #153
20160108769
2016-04-21

Valve opening/closing timing control device

 #154
20160076436
2016-03-17

Variable combustion system for an internal combustion engine

 #155
20160061064
2016-03-03

Valve timing control apparatus

 #156
20160061063
2016-03-03

Valve timing controller

 #157
20160032790
2016-02-04

Internal combustion engine with a camshaft phaser

 #158
20160024978
2016-01-28

Camshaft phaser

 #159
20160024976
2016-01-28

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

 #160
20160017767
2016-01-21

Valve opening/closing timing control device

 #161
20160010516
2016-01-14

Valve timing control apparatus

 #162
20160003109
2016-01-07

Method and apparatus for controlling CVVT engine of intermediate phase

 #163
20150377375
2015-12-31

Control system of hydraulic pressure control valve

 #164
20150330268
2015-11-19

System for varying cylinder valve timing in an internal combustion engine

 #165
20150330267
2015-11-19

Cam phaser with electromagnetically actuated hydraulic valve

 #166
20150300213
2015-10-22

Hydraulic valve for cam phaser

 #167
20150285105
2015-10-08

Oil control valve

 #168
20150233269
2015-08-20

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

 #169
20150218977
2015-08-06

Hydraulic valve for pivot motor adjustment device of a camshaft

 #170
20150192042
2015-07-09

Five-way oil control valve with integrated venting spool

 #171
20150129069
2015-05-14

Control valve for a camshaft adjuster

 #172
20150128889
2015-05-14

Holding structure of oil control valve

 #173
20150096636
2015-04-09

Engine valvetrain oil control valve

 #174
20150083064
2015-03-26

Valve timing control apparatus of internal combustion engine

 #175
20150075461
2015-03-19

Variable valve actuation apparatus of internal combustion engine

 #176
20150075460
2015-03-19

Valve timing control apparatus

 #177
20150059899
2015-03-05

Control valve and attachment structure of control valve

 #178
20150059671
2015-03-05

Control valve

 #179
20150053158
2015-02-26

Variable valve timing control apparatus

 #180
20150051817
2015-02-19

Drive control device and drive control method for hybrid electric vehicle

 #181
20150034031
2015-02-05

Internal-combustion engine having a system for variable actuation of the intake valves, provided with an electrically actuated valve having two ways and three positions

 #182
20150027573
2015-01-29

Electromagnetic valve

 #183
20140318484
2014-10-30

Internal-combustion engine having a system for variable actuation of the intake values, provided with three-way solenoid valves, and method for controlling said engine in “single-lift” mode

 #184
20140311594
2014-10-23

Central valve for pivot motor actuator

 #185
20140299804
2014-10-09

Electromagnetic actuator

 #186
20140283786
2014-09-25

Ignition timing control system for a spark ignition type internal combustion engine

 #187
20140251247
2014-09-11

System for varying cylinder valve timing in an internal combustion engine

 #188
20140216377
2014-08-07

Valve timing adjustment system

 #189
20140216376
2014-08-07

Coil and solenoid valve

 #190
20140202409
2014-07-24

Solenoid valve and valve opening-closing timing control device

 #191
20140150744
2014-06-05

Valve timing adjusting system

 #192
20140083385
2014-03-27

Camshaft phaser with coaxial control valves

 #193
20140007831
2014-01-09

Camshaft adjuster

 #194
20140007828
2014-01-09

Camshaft assembly and method for producing a camshaft assembly

 #195
20130284134
2013-10-31

Spool valve

 #196
20130233261
2013-09-12

Valve timing control device of internal combustion engine

 #197
20130220279
2013-08-29

Variable compression ratio systems for opposed-piston and other internal combustion engines, and related methods of manufacture and use

 #198
20130220247
2013-08-29

Fluid-pressure-operated valve timing controller

 #199
20130192551
2013-08-01

Valve timing controller and assembling method of the same

 #200
20130180481
2013-07-18

Valve timing control apparatus for internal combustion engine

 #201
20130146005
2013-06-13

Valve timing control apparatus of internal combustion engine

 #202
20130134338
2013-05-30

Valve timing controller

 #203
20130118622
2013-05-16

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

 #204
20130104820
2013-05-02

Valve timing control apparatus of internal combustion engine

 #205
20130075639
2013-03-28

Fluid-biased hydraulic control valve

 #206
20130068975
2013-03-21

Electromagnetic actuator

 #207
20130068184
2013-03-21

Valve timing controller

 #208
20130068183
2013-03-21

Hydraulic control unit for use in valve timing control apparatus and controller for hydraulic control unit

 #209
20130068180
2013-03-21

Camshaft with camshaft adjuster

 #210
20130061959
2013-03-14

Hydraulic valve with an annular filter element secured by a helical spring

 #211
20130061958
2013-03-14

Pressure control valve

 #212
20130048112
2013-02-28

FLUID CONTROL VALVE

 #213
20130048106
2013-02-28

Oil control valve for the variable valve lift system

 #214
20130032112
2013-02-07

Concentric camshaft phaser flex plate

 #215
20130032101
2013-02-07

Device for controlling internal combustion engine

 #216
20130008397
2013-01-10

Control valve for use in valve timing control apparatus

 #217
20130000576
2013-01-03

VALVE CHARACTERISTICS CONTROL APPARATUS

 #218
20130000574
2013-01-03

Oil control valve assembly for engine cam switching

 #219
20120319018
2012-12-20

Electromagnetic hydraulic valve

 #220
20120312262
2012-12-13

Camshaft adjusting device

 #221
20120291889
2012-11-22

Oil control valve and variable valve lift system provided with the same

 #222
20120261009
2012-10-18

Hydraulic control device

 #223
20120260871
2012-10-18

Internal combustion engine, with a system for variable actuation of the intake valves provided with improved solenoid valves, and solenoid valve for this engine

 #224
20120234275
2012-09-20

Camshaft phaser with coaxial control valves

 #225
20120234273
2012-09-20

Variable compression ratio type engine with fuel containing alcohol

 #226
20120227691
2012-09-13

Switchable pressure supply device

 #227
20120222634
2012-09-06

Three-port pintle valve for control of actuation oil

 #228
20120204823
2012-08-16

Oil supply apparatus for internal combustion engine

 #229
20120199086
2012-08-09

Valve timing control apparatus

 #230
20120160196
2012-06-28

Valve timing control apparatus for internal combustion engine

 #231
20120145100
2012-06-14

Device for adjusting the rotational angular position of a cam shaft

 #232
20120145099
2012-06-14

Valve timing control apparatus

 #233
20120132165
2012-05-31

Method for operating a camshaft phaser

 #234
20120118252
2012-05-17

Camshaft adjuster for an internal combustion engine

 #235
20120085302
2012-04-12

Variable compression ratio systems for opposed-piston and other internal combustion engines, and related methods of manufacture and use

 #236
20120055429
2012-03-08

Variable valve timing control apparatus

 #237
20120017857
2012-01-26

Valve timing control device of internal combustion engine

 #238
20110303169
2011-12-15

Flow rate control valve

 #239
20110259289
2011-10-27

Valve timing control apparatus

 #240
20110247580
2011-10-13

Control valve mounting system

 #241
20110247576
2011-10-13

Oscillating-motor camshaft adjuster having a hydraulic valve

 #242
20110233447
2011-09-29

Valve case for oil control valve

 #243
20110232595
2011-09-29

Valve timing control apparatus

 #244
20110220826
2011-09-15

Electromagnetic actuating unit for a hydraulic directional control valve and method for the assembly thereof

 #245
20110220046
2011-09-15

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

 #246
20110174252
2011-07-21

Valve timing adjuster

 #247
20110168276
2011-07-14

Oil control valve mounting arrangement

 #248
20110162606
2011-07-07

VALVE TIMING CONTROL APPARATUS

 #249
20110089350
2011-04-21

Fluid-biased hydraulic control valve with armature piston

 #250
20110085921
2011-04-14

Apparatus having control valve and variable capacitance pump and hydraulic pressure circuit of internal combustion engine in which the same apparatus is used

 #251
20110067668
2011-03-24

OIL SUPPLY DEVICE FOR VEHICLE

 #252
20110054766
2011-03-03

Diagnostic system and method for hydraulically-actuated cam phasers

 #253
20110048348
2011-03-03

Solenoid valve for variable valve timing control devices, and variable valve timing control system

 #254
20110000449
2011-01-06

Variable valve timing device

 #255
20100332110
2010-12-30

Variable valve timing control apparatus and method for controlling variable valve timing device

 #256
20100327209
2010-12-30

HYDRAULIC MEDIUM INSERT FOR A CONTROL VALVE IN A HYDRAULIC ACTUATOR

 #257
20100326384
2010-12-30

Electronically controlled hydraulic system for variable actuation of the valves of an internal combustion engine, with fast filling of the high pressure side of the system

 #258
20100320407
2010-12-23

Fluid-biased hydraulic control valve

 #259
20100313837
2010-12-16

Valve control apparatus for internal combustion engine

 #260
20100313835
2010-12-16

Valve timing control apparatus

 #261
20100294387
2010-11-25

Control valve for a camshaft adjuster

 #262
20100288216
2010-11-18

Valve timing control apparatus

 #263
20100282192
2010-11-11

Method and system for controlling a cam phaser

 #264
20100258069
2010-10-14

Valve timing control apparatus

 #265
20100251980
2010-10-07

Valve timing controller

 #266
20100243934
2010-09-30

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

 #267
20100242880
2010-09-30

Valve timing controller for internal combustion engine

 #268
20100237264
2010-09-23

Valve operating mechanism

 #269
20100236227
2010-09-23

Hydraulic system control device and valve timing control device

 #270
20100199933
2010-08-12

Hydraulic actuator

 #271
20100186697
2010-07-29

Valve timing control apparatus

 #272
20100186696
2010-07-29

Oil control valve assembly for engine cam switching

 #273
20100186692
2010-07-29

Valve operation control system for internal combustion engine

 #274
20100175651
2010-07-15

Valve timing controller

 #275
20100175650
2010-07-15

Valve opening/closing timing control apparatus

 #276
20100139592
2010-06-10

Variable valve timing control apparatus for internal combustion engine

 #277
20100037841
2010-02-18

Apparatus for the variable setting of the control times of gas exchange valves of an internal combustion engine

 #278
20100024751
2010-02-04

Oil circuit for continuous variable valve timing device

 #279
20100019186
2010-01-28

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Variable stroke engine assembly

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Hydraulic actuator control device and hydraulic actuator control method

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Hydraulic control system for engine cam phasing

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VALVE TIMING ADJUSTING APPARATUS

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Valve timing control apparatus

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Electromagnetic actuator for a hydraulic directional control valve

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Valve timing adjusting apparatus

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Apparatus for controlling variable valve device

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Control valve for a camshaft adjuster

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Valve timing control apparatus

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Control apparatus for an internal combustion engine

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VALVE TIMING CONTROLLER

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Valve timing control device

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Band type filter

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Hydraulic circuit, particularly for camshaft adjusters, and corresponding control element

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Controller for Oil Control Valve

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Oil control valve for variable cam phaser

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Valve part of a hydraulic control valve for controlling flows of pressurized medium

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System and method for controlling a solenoid valve, particularly for a system for variable actuation of the valves of an internal combustion engine according to a multi-lift mode

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Valve part of a hydraulic control valve