ClassID:

137501

F01L2800/11 - CPC Classification

Classification description:

Methods of operation using a variable valve timing mechanism Fault detection, diagnosis

Recent Application in this class:
#1
20250101979
2025-03-27

Control Device for Hydraulic Control Valve

#2
20240247599
2024-07-25

Valve train device

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20220397071
2022-12-15

SKIP-FIRE ENGINE SYSTEM FEATURING DIFFERENT TYPES OF OIL CONTROL SOLENOIDS

#4
20220307440
2022-09-29

Start-up method and apparatus for cam angle sensor error of mild hybrid system

#5
20220275766
2022-09-01

Method and device for checking the state of the outlet valves of an engine of a motor vehicle

#6
20210189919
2021-06-24

Method and device for actuating a camshaft adjuster

#7
20210062685
2021-03-04

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

#8
20210047949
2021-02-18

Method for checking a variable valve lift control of an internal combustion engine

#9
20200191086
2020-06-18

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

#10
20200063674
2020-02-27

Monitoring deviations occurring in the valve drive of an internal combustion engine, and electronic engine control units for executing such methods

#11
20200040776
2020-02-06

Electrically latching rocker arm assembly having built-in OBD functionality

#12
20190360407
2019-11-28

Control device and control method for variable valve timing mechanism

#13
20190360365
2019-11-28

Method for diagnosing the valve timing of an internal combustion engine

#14
20190331032
2019-10-31

Method and system for variable displacement engine diagnostics

#15
20190249618
2019-08-15

System and method for diagnosing a variable displacement engine

#16
20190128203
2019-05-02

System and method of valve wear detection

#17
20190101458
2019-04-04

System and method for engine oil temperature estimation

#18
20190017457
2019-01-17

Controller for internal combustion engine

#19
20190010887
2019-01-10

Control device for internal combustion engine

#20
20180283233
2018-10-04

Abnormality diagnosis system for internal combustion engine and abnormality diagnosis method for internal combustion engine

#21
20180283225
2018-10-04

Control device for internal combustion engine

#22
20180230869
2018-08-16

Internal combustion engine system

#23
20180163658
2018-06-14

Method and apparatus for diagnosing engine system

#24
20180163654
2018-06-14

Control device for internal combustion engine

#25
20180163577
2018-06-14

Electrically latching rocker arm assembly having built-in OBD functionality

#26
20180051645
2018-02-22

Device and method for detecting abnormality in rotation phase detection device, and rotation position control device using same

#27
20180051644
2018-02-22

Method for diagnosing variable valve timing system

#28
20180030861
2018-02-01

Latch interface for a valve actuating device

#29
20180016951
2018-01-18

Control method and system for stability of intermediate phase continuously variable valve timing system

#30
20170342872
2017-11-30

Methods and system for operating an exhaust valve of an internal combustion engine

#31
20170248073
2017-08-31

Custom VVA rocker arms for left hand and right hand orientations

#32
20170167410
2017-06-15

Method of controlling continuously variable valve timing system for limp-home

#33
20170159558
2017-06-08

Apparatus for controlling mild hybrid vehicle and method of using the mild hybrid vehicle

#34
20170122139
2017-05-04

Valve opening and closing timing control apparatus

#35
20170114729
2017-04-27

Engine system with valve stop

#36
20170114676
2017-04-27

Sliding CAM recovery from short to ground on actuator low side

#37
20170081992
2017-03-23

METHOD AND DEVICE FOR DIAGNOSE OF VALVES OF AN INTERNAL COMBUSTION ENGINE

#38
20160376946
2016-12-29

VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE AND CONTROLLER FOR VALVE TIMING CONTROL DEVICE

#39
20160348603
2016-12-01

Control device and control method for internal combustion engine

#40
20160258366
2016-09-08

METHOD FOR CHECKING THE FUNCTION OF AN OUTLET VALVE LIFT ADJUSTMENT

#41
20160230619
2016-08-11

Custom VVA rocker arms for left hand and right hand orientations

#42
20160194984
2016-07-07

Internal combustion engine

#43
20160169124
2016-06-16

Controller for internal combustion engine

#44
20160146064
2016-05-26

Latch interface for a valve actuating device

#45
20160115831
2016-04-28

Latch interface for a valve actuating device

#46
20160090932
2016-03-31

Variable valve lift diagnostic systems and methods using cam phaser differential oil pressure

#47
20160084117
2016-03-24

System to diagnose variable valve actuation malfunctions by monitoring fluid pressure in a hydraulic lash adjuster gallery

#48
20160076471
2016-03-17

Engine cylinder bank-to-bank torque imbalance correction

#49
20150369095
2015-12-24

Latch interface for a valve actuating device

#50
20150152792
2015-06-04

Determination of a value for a valve lift of a valve of an individual cylinder of an internal combustion engine with a plurality of cylinders

#51
20150057879
2015-02-26

Method and apparatus for monitoring an electromagnetic hydraulic valve for a variable valve timing system

#52
20140316681
2014-10-23

Airflow control systems and methods using model predictive control

#53
20140251242
2014-09-11

Engine valve position sensing systems and methods

#54
20140190431
2014-07-10

Custom VVA rocker arms for left hand and right hand orientations

#55
20140172268
2014-06-19

Stepped idle return for multiair equipped engines with high aeration

#56
20140150744
2014-06-05

Valve timing adjusting system

#57
20140144399
2014-05-29

Valve timing adjusting system

#58
20140123940
2014-05-08

Diagnostic for engine cam profile switching system

#59
20130325290
2013-12-05

System and method for calibrating a valve lift sensor and evaluating a valve lift sensor and a hydraulic valve actuator

#60
20130298855
2013-11-14

System for detecting malfunction of variable valve lift apparatus and method for the same

#61
20130255612
2013-10-03

System to diagnose variable valve actuation malfunctions by monitoring fluid pressure in a control gallery

#62
20130239918
2013-09-19

Control apparatus for variable valve actuation system and control method for variable valve actuation system

#63
20130233265
2013-09-12

System to diagnose variable valve actuation malfunctions by monitoring fluid pressure in a hydraulic lash adjuster gallery

#64
20130231843
2013-09-05

Control apparatus for internal combustion engine

#65
20130206105
2013-08-15

Control device for in-vehicle internal combustion engine

#66
20130073178
2013-03-21

Diagnostic system and method for a variable valve lift mechanism

#67
20120209494
2012-08-16

Variable valve lift mechanism fault detection systems and methods

#68
20120143466
2012-06-07

Method and device for controlling an internal combustion engine

#69
20110132327
2011-06-09

Abnormality detection device for internal combustion engine

#70
20110088643
2011-04-21

Valve train device

#71
20110056448
2011-03-10

Diagnostic systems and methods for a two-step valve lift mechanism

#72
20110054766
2011-03-03

Diagnostic system and method for hydraulically-actuated cam phasers

#73
20110035134
2011-02-10

Valve timing control apparatus

#74
20110035132
2011-02-10

Method for automatically controlling an internal combustion engine

#75
20110016958
2011-01-27

Diagnostic system for valve actuation camshaft driven component compensation

#76
20110004394
2011-01-06

Method and device for operating an internal combustion engine

#77
20100300189
2010-12-02

Diagnostic system for variable valve timing control system

#78
20100288037
2010-11-18

Method for determining valve degradation

#79
20100269575
2010-10-28

Diagnostic systems and methods for variable lift mechanisms of engine systems having a camshaft driven fuel pump

#80
20100263438
2010-10-21

Camshaft position measurement and diagnosis

#81
20100262355
2010-10-14

METHOD AND DEVICE FOR EXAMINING A VALVE LIFT SWITCHING PROCESS

#82
20100258093
2010-10-14

Direct injected fuel pump diagnostic systems and methods

#83
20100139601
2010-06-10

CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE

#84
20100042306
2010-02-18

Method for synchronizing an oil control valve as a virtual check valve

#85
20090312937
2009-12-17

Method for controlling and diagnosing a vane-type cam phaser having intermediate position pin locking

#86
20090288480
2009-11-26

Abnormality determination apparatus and abnormality determination method for valve characteristics change mechanism

#87
20090266318
2009-10-29

Sliding mode control apparatus and adjusting method

#88
20090222196
2009-09-03

Two-step oil control valve failure diagnostic

#89
20090199628
2009-08-13

Method and device for diagnosing at least one gas exchange valve of at least one cylinder of an internal combustion engine

#90
20090165542
2009-07-02

Camshaft and crankshaft position correlation simulation methods and systems

#91
20090099816
2009-04-16

Failure diagnosis apparatus for homogeneous charge compression ignition engine

#92
20090088892
2009-04-02

Control system of electric actuator and control method thereof

#93
20090066337
2009-03-12

Method for determining valve degradation

#94
20090056652
2009-03-05

Valve timing control device for an internal combustion engine

#95
20080283007
2008-11-20

Actuator control apparatus and method

#96
20080281453
2008-11-13

Methods and systems to identify cam phaser hardware degradation

#97
20080183373
2008-07-31

Diagnostic methods and systems for active fuel management systems

#98
20080120018
2008-05-22

Discrete variable valve lift diagnostic systems and methods

#99
20080092836
2008-04-24

Variable valve performance detection strategy for internal combustion engine

#100
20080071441
2008-03-20

Abnormality detecting device of vehicle

#101
20080028844
2008-02-07

Monitoring of a cam profile switching system in internal combustion engines

#102
20080011068
2008-01-17

Apparatus and method of making and using the apparatus for adjusting engine valves

#103
20070107683
2007-05-17

Engine control unit and method for operating such engine control unit

#104
20070089707
2007-04-26

Air and fuel supply system for combustion engine

#105
20070068474
2007-03-29

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

#106
20070056565
2007-03-15

Control apparatus and control method for internal combustion engine

#107
20060293832
2006-12-28

Method and control device for diagnosing a charge cycle valve stroke adjusting system of an internal-combustion engine

#108
20060229797
2006-10-12

Engine control apparatus

#109
20060219197
2006-10-05

Method and apparatus for controlling variable valve actuation device in internal combustion engine

#110
20060178803
2006-08-10

Control apparatus and method for internal combustion engine

#111
20060106527
2006-05-18

Evaluation method of diagnostic function for variable valve mechanism and evaluation apparatus for variable valve mechanism

#112
20050235950
2005-10-27

Air and fuel supply system for combustion engine

#113
20050217355
2005-10-06

Camshaft position sensor testing system

#114
20050126524
2005-06-16

Diagnostic test for variable valve mechanism

#115
20050125139
2005-06-09

Method for operating an internal combustion engine

#116
20050011477
2005-01-20

Control apparatus and method for variable valve

#117
18507667
2024-08-06

Vehicle system

#118
17648908
2023-01-24

Methods and systems for diagnosing non-deactivated valves of disabled engine cylinders