ClassID:

137214

F01L2001/3444 - 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; Features or method for avoiding malfunction due to foreign matters in oil Oil filters

Recent Application in this class:
#1
20250207517
2025-06-26

OIL PASSAGE CONTROL VALVE AND VALVE TIMING VARYING DEVICE

#2
20230340897
2023-10-26

FLUID CONTROL VALVE UNIT AND VALVE TIMING CHANGING DEVICE

#3
20230287809
2023-09-14

Fluid control valve unit and valve timing changing device

#4
20220282644
2022-09-08

Valve timing adjusting device

#5
20220010695
2022-01-13

Hydraulic oil control valve and valve timing adjustment device

#6
20200408115
2020-12-31

Valve device

#7
20200325801
2020-10-15

CAMSHAFT PHASER INCLUDING LOCKING PART OR ROTOR HAVING GROOVE

#8
20200191024
2020-06-18

Double slope stopper usable with a variable cam timing system

#9
20200072094
2020-03-05

Valve timing adjustment device

#10
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

#11
20190234244
2019-08-01

Valve timing controller

#12
20190085736
2019-03-21

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

#13
20190063270
2019-02-28

CAMSHAFT PHASER

#14
20180245488
2018-08-30

Variable valve timing control device

#15
20180238201
2018-08-23

Variable valve timing control device

#16
20180171835
2018-06-21

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

#17
20180156080
2018-06-07

Valve opening/closing timing control device

#18
20180135474
2018-05-17

Valve opening/closing timing control apparatus

#19
20180135472
2018-05-17

Valve opening/closing timing control apparatus

#20
20180058273
2018-03-01

Systems and methods for Cam phasing control

#21
20180043374
2018-02-15

Particle separating system

#22
20170356563
2017-12-14

Clip filter for hydraulic valve and hydraulic valve with clip filter

#23
20170342870
2017-11-30

Control valve

#24
20170260882
2017-09-14

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

#25
20170254436
2017-09-07

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

#26
20170198612
2017-07-13

Valve opening/closing timing control apparatus

#27
20170191386
2017-07-06

Method and system for variable cam timing device

#28
20170175593
2017-06-22

Valve opening and closing timing control apparatus

#29
20170130620
2017-05-11

Valve opening and closing timing control apparatus

#30
20170101905
2017-04-13

Camshaft adjusting device

#31
20170009786
2017-01-12

Screen for hydraulic valve and hydraulic valve

#32
20160376943
2016-12-29

BOLT VALVE

#33
20160245130
2016-08-25

Camshaft phaser

#34
20160010516
2016-01-14

Valve timing control apparatus

#35
20150184765
2015-07-02

Valve unit with axial pressure medium unit

#36
20150083243
2015-03-26

Control valve filter and control valve insertion structure

#37
20150034032
2015-02-05

Valve timing adjusting device

#38
20140102394
2014-04-17

Camshaft with internal oil filter

#39
20130228143
2013-09-05

Filter arrangement of a control valve for a camshaft adjuster

#40
20130199634
2013-08-08

Control valve for hydraulic media

#41
20130112163
2013-05-09

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

#42
20130061959
2013-03-14

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

#43
20130048112
2013-02-28

FLUID CONTROL VALVE

#44
20120261009
2012-10-18

Hydraulic control device

#45
20120152189
2012-06-21

Control valve

#46
20120145105
2012-06-14

Control valve

#47
20120060787
2012-03-15

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

#48
20110226204
2011-09-22

Filter element and control valve for a camshaft adjustment system

#49
20110084018
2011-04-14

RING FILTER

#50
20100327209
2010-12-30

HYDRAULIC MEDIUM INSERT FOR A CONTROL VALVE IN A HYDRAULIC ACTUATOR

#51
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

#52
20100294387
2010-11-25

Control valve for a camshaft adjuster

#53
20100084019
2010-04-08

CENTRAL SPOOL VALVE

#54
20100012063
2010-01-21

Cam cap and oil passage connection structure

#55
20090277406
2009-11-12

Power unit for vehicle

#56
20090194049
2009-08-06

Cam cap

#57
20090133650
2009-05-28

VALVE TIMING CONTROL APPARATUS

#58
20090084727
2009-04-02

Band type filter

#59
20090078222
2009-03-26

VALVE TIMING CONTROL APPARATUS

#60
20090071140
2009-03-19

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

#61
20090050102
2009-02-26

Oil filter having an integral metering orifice for a valve lifter oil manifold assembly

#62
20080302983
2008-12-11

Fluid control valve

#63
20080283010
2008-11-20

Cam shaft phase setter and vacuum pump for an internal combustion engine

#64
20080283009
2008-11-20

Camshaft adjuster

#65
20080271689
2008-11-06

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

#66
20080264365
2008-10-30

Camshaft adjuster

#67
20080264200
2008-10-30

Feeder for a camshaft adjuster

#68
20080257290
2008-10-23

Camshaft with cams that can be rotated in relation to each other, especially for motor vehicles

#69
20080257288
2008-10-23

Valve timing control system

#70
20080236520
2008-10-02

Multicylinder engine for a vehicle, and vehicle incorporating same

#71
20080190391
2008-08-14

Valve train assembly with magnet

#72
20080173267
2008-07-24

Valve timing control apparatus

#73
20080047515
2008-02-28

Valve timing control apparatus

#74
20080011254
2008-01-17

Method of controlling variable valve timing system, controller, and motorcycle including controller

#75
20070295413
2007-12-27

OIL PRESSURE CONTROL APPARATUS FOR AN INTERNAL COMBUSTION ENGINE

#76
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

#77
20070056540
2007-03-15

Control valve and method for its production

#78
20060236964
2006-10-26

System to release a stuck lock-pin in a cam phaser

#79
20060075983
2006-04-13

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

#80
20060065581
2006-03-30

Electromagnetic valve unit and engine cover unit

#81
20060060160
2006-03-23

Engine with variable value timing device

#82
20060032474
2006-02-16

Oil filter for continuous variable valve timing apparatus in engine

#83
20060021826
2006-02-02

Ring filter

#84
20060016495
2006-01-26

Control valve for a device to modify the timing of an internal combustion engine

#85
20050252561
2005-11-17

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

#86
20050252465
2005-11-17

Oil control valve and installing method thereof

#87
20050199201
2005-09-15

Electrically driven camshaft adjuster

#88
20050103191
2005-05-19

Oil pressure control apparatus for an internal combustion engine

#89
20050061289
2005-03-24

Engine oil system with oil pressure regulator to increase cam phaser oil pressure

#90
20050045129
2005-03-03

Oil supply structure for continuously variable valve timing apparatus

#91
20050011703
2005-01-20

Oil passage switching valve having oil filter