ClassID:

139605

F02D41/0087 - page 2 - CPC Classification

Classification description:

Electrical control of supply of combustible mixture or its constituents; Controlling each cylinder individually Selective cylinder activation, i.e. partial cylinder operation

Recent Application in this class:
#301
20190072043
2019-03-07

Control method of internal combustion engine

#302
20190063378
2019-02-28

System and method making it possible to deactivate at least one cylinder of an engine, intake manifold and heat exchanger including said system

#303
20190063337
2019-02-28

Control system for compression-ignition engine

#304
20190055894
2019-02-21

Noise/vibration reduction control

#305
20190055891
2019-02-21

Systems and methods for a split exhaust engine system

#306
20190048843
2019-02-14

Control device of internal combustion engine

#307
20190048814
2019-02-14

Variable combustion cylinder ratio control device and method

#308
20190048813
2019-02-14

Methods and systems for reducing water accumulation in an engine

#309
20190047567
2019-02-14

Powertrain fault management

#310
20190040826
2019-02-07

In-cylinder EGR and VVA for aftertreatment temperature control

#311
20190033170
2019-01-31

Systems and methods for diagnostics of a variable displacement engine

#312
20190024595
2019-01-24

CONNECTED ENERGY MANAGEMENT AND AUTONOMOUS DRIVING STRATEGY FOR ENGINE CYLINDER DEACTIVATION

#313
20190024594
2019-01-24

Optimal firing patterns for cylinder deactivation control with limited deactivation mechanisms

#314
20190003443
2019-01-03

DYNAMIC CHARGE COMPRESSION IGNITION ENGINE WITH MULTIPLE AFTERTREATMENT SYSTEMS

#315
20190003442
2019-01-03

Dynamic charge compression ignition engine with multiple aftertreatment systems

#316
20190003412
2019-01-03

Systems and methods for a split exhaust engine system

#317
20190003410
2019-01-03

Internal combustion engine and method for controlling same

#318
20190003409
2019-01-03

Method and device for operating a drive device, and drive device

#319
20180363578
2018-12-20

System and method for determining engine knock

#320
20180363566
2018-12-20

Method and system for a variable displacement engine

#321
20180362044
2018-12-20

VEHICLE CONTROL DEVICE

#322
20180362014
2018-12-20

Adaptive power supply for electric cars

#323
20180354353
2018-12-13

System and methods for active engine mount diagnostics

#324
20180347487
2018-12-06

Methods and system for partial cylinder deactivation

#325
20180347486
2018-12-06

Combined slip-based driver command interpreter

#326
20180347485
2018-12-06

System and method for operating an engine that includes a fuel vapor canister

#327
20180345977
2018-12-06

Control device for vehicle

#328
20180345976
2018-12-06

Control device for vehicle

#329
20180345975
2018-12-06

Control device for vehicle

#330
20180340863
2018-11-29

Misfire detecting device for engine

#331
20180340487
2018-11-29

Methods and systems for fuel injection control

#332
20180340479
2018-11-29

System and method for reactivating engine cylinders

#333
20180334970
2018-11-22

Control apparatus for internal combustion engine

#334
20180328292
2018-11-15

Controller system and method for selecting a firing fraction for a skip fire controlled internal combustion engine based at least on non-drive train levels of noise, vibration and harshness

#335
20180320626
2018-11-08

Methods and system for central fuel injection

#336
20180320615
2018-11-08

Engine torque smoothing

#337
20180320614
2018-11-08

Multi-level firing engine control

#338
20180313303
2018-11-01

Systems and methods for engine control

#339
20180313281
2018-11-01

Method for operating engine in intermittent combustion mode and engine control device

#340
20180306134
2018-10-25

Method and system for characterizing a port fuel injector

#341
20180298838
2018-10-18

Method to control engine using airflow actuators

#342
20180298794
2018-10-18

Cylinder deactivation control and methods

#343
20180291824
2018-10-11

System and method for intake manifold pressure control

#344
20180283267
2018-10-04

Method and system for boosted engine system

#345
20180281805
2018-10-04

Systems and methods for active engine mount diagnostics

#346
20180274471
2018-09-27

Systems and methods for a variable displacement engine

#347
20180274457
2018-09-27

Cylinder deactivation control and methods

#348
20180266347
2018-09-20

Dynamic valve control in a skip fire controlled engine

#349
20180266346
2018-09-20

Vehicle control device

#350
20180266345
2018-09-20

Vehicle control device

#351
20180266295
2018-09-20

Method for operating a drive device and corresponding drive device

#352
20180265074
2018-09-20

Dynamic hybrid vehicle system for stabilizing cylinder deactivation or turbocharger boosting

#353
20180258804
2018-09-13

Oil supply control device of engine

#354
20180246511
2018-08-30

Autonomous driving with dynamic skip fire

#355
20180245662
2018-08-30

Torsional vibration absorption system

#356
20180238253
2018-08-23

Control device for internal combustion engine

#357
20180238249
2018-08-23

Connected energy management and autonomous driving strategy for engine cylinder deactivation

#358
20180238248
2018-08-23

Method and system for selective cylinder deactivation

#359
20180236896
2018-08-23

Vehicle with maximum vehicle speed setting unit

#360
20180230930
2018-08-16

Methods and system mitigating direct injection degradation

#361
20180230927
2018-08-16

Method to select optimal mode on a multi-mode engine with charging

#362
20180230919
2018-08-16

Adaptive torque mitigation by micro-hybrid system

#363
20180230916
2018-08-16

Control device for internal combustion engine

#364
20180230914
2018-08-16

Cylinder deactivation hydraulic lash adjuster

#365
20180223775
2018-08-09

Method for increasing the quantity of purging air in the tank venting system by completely blocking the injection of at least one cylinder

#366
20180223757
2018-08-09

METHODS AND SYSTEMS FOR THERMAL MANAGEMENT USING DIESEL CYLINDER DEACTIVATION

#367
20180223745
2018-08-09

Dual fuel cylinder deactivation control system and method

#368
20180216564
2018-08-02

VALVE TIMING CONTROL DEVICE

#369
20180216562
2018-08-02

Fuel injector diagnostics in a variable displacement engine

#370
20180216558
2018-08-02

Method and device for predictive open-loop and/or closed-loop control of an internal combustion engine and internal combustion engine having the device for carrying out the method

#371
20180216551
2018-08-02

Internal combustion engine control for improved fuel efficiency

#372
20180216541
2018-08-02

Firing fraction management in skip fire engine control

#373
20180215386
2018-08-02

Vehicle propulsion systems and methods

#374
20180209309
2018-07-26

Valve train carrier assembly

#375
20180202379
2018-07-19

Adaptive torque mitigation by micro-hybrid system

#376
20180202378
2018-07-19

Control apparatus

#377
20180202354
2018-07-19

Method of operating a rotary engine

#378
20180195453
2018-07-12

Method and control device

#379
20180195448
2018-07-12

Methods and systems for overriding automotive computer controlled cylinder management

#380
20180194356
2018-07-12

Methods and systems for powertrain NVH control in a vehicle

#381
20180187611
2018-07-05

System and method to operate an engine

#382
20180179970
2018-06-28

Coordination of vehicle actuators during firing fraction transitions

#383
20180171937
2018-06-21

Method and system for engine water injection

#384
20180171909
2018-06-21

System and method to activate and deactivate engine cylinders

#385
20180171880
2018-06-21

Variable combustion cylinder ratio control method and variable combustion cylinder ratio control device

#386
20180163650
2018-06-14

Noise/vibration reduction control

#387
20180163649
2018-06-14

Method and system for pre-ignition control

#388
20180163616
2018-06-14

Engine system

#389
20180149107
2018-05-31

Methods and systems for fuel injection control

#390
20180149100
2018-05-31

Cylinder de-activation control method and cylinder de-activation system

#391
20180149049
2018-05-31

Control shaft for inlet valve shut-off

#392
20180149048
2018-05-31

Method of adaptively controlling a motor vehicle engine system

#393
20180142636
2018-05-24

Method to adjust an oil control valve actuation response time using cylinder valve diagnostics

#394
20180142599
2018-05-24

Methods for mitigating over-temperature during an exhaust gas system particulate filter device regeneration

#395
20180141538
2018-05-24

Methods and system for improving response of a hybrid vehicle

#396
20180141536
2018-05-24

Engine assembly

#397
20180135543
2018-05-17

CDA system and control method for the same

#398
20180134272
2018-05-17

Methods and system for downshifting a transmission

#399
20180128198
2018-05-10

Method of improving active fuel management reactivation torque responsiveness

#400
20180128195
2018-05-10

Method for smoothly connecting a load during an activated cylinder deactivation process of an internal combustion engine

#401
20180119182
2018-05-03

Polyhydroxyalkanoic acid compositions and methods for generating same

#402
20180112644
2018-04-26

Managing firing phase transitions

#403
20180112609
2018-04-26

Managing skip fire phase transitions

#404
20180106204
2018-04-19

In-cylinder EGR for air fuel ratio control

#405
20180106201
2018-04-19

Engine control in fuel and/or cylinder cut off modes based on intake manifold pressure

#406
20180105179
2018-04-19

Braking and/or electric motor control during shifting events

#407
20180100460
2018-04-12

System and method for operating engine cylinders

#408
20180100459
2018-04-12

Cylinder deactivation entrance and exit control

#409
20180100457
2018-04-12

Engine provided with CDA apparatus and water pump and method for controlling the same

#410
20180080398
2018-03-22

System and method to extend operating time of valve actuators of an internal combustion engine

#411
20180072297
2018-03-15

Vehicle control apparatus

#412
20180058357
2018-03-01

System and method for controlling fuel supplied to an engine

#413
20180058344
2018-03-01

Hydraulic control system for engine

#414
20180058289
2018-03-01

Engine exhaust catalyst heating system

#415
20180058285
2018-03-01

Internal combustion engine system and method for increasing the temperature in at least one part of the internal combustion engine system

#416
20180057007
2018-03-01

Method to optimize engine operation using active fuel management

#417
20180052077
2018-02-22

Abnormality diagnostic device for a variable compression ratio mechanism

#418
20180051642
2018-02-22

Engine system

#419
20180046184
2018-02-15

Autonomous driving with dynamic skip fire

#420
20180045109
2018-02-15

ENGINE INTAKE AND EXHAUST FLOW MANAGEMENT

#421
20180043893
2018-02-15

Coordination of vehicle actuators during firing fraction transitions

#422
20180030934
2018-02-01

Engine system

#423
20180023433
2018-01-25

Exhaust gas purification system for internal combustion engine

#424
20180010533
2018-01-11

Method and system for controlling supercharger of vehicle

#425
20180003102
2018-01-04

Method and system for improving turbocharger efficiency

#426
20170370804
2017-12-28

Engine error detection system

#427
20170370342
2017-12-28

Firing fraction transition control

#428
20170370311
2017-12-28

Method and system for pre-ignition control

#429
20170370310
2017-12-28

Air charge estimation for use in engine control

#430
20170370309
2017-12-28

Coordination of vehicle actuators during firing fraction transitions

#431
20170370308
2017-12-28

DYNAMIC SKIP FIRE OPERATION OF A GASOLINE COMPRESSION IGNITION ENGINE

#432
20170370307
2017-12-28

Advanced exhaust gas recirculation fueling control

#433
20170370305
2017-12-28

Knocking control method

#434
20170370301
2017-12-28

Dynamically varying an amount of slippage of a torque converter clutch provided between an engine and a transmission of a vehicle

#435
20170369063
2017-12-28

Coordination of vehicle actuators during firing fraction transitions

#436
20170356381
2017-12-14

System and method for controlling fuel for reactivating engine cylinders

#437
20170356380
2017-12-14

Method and system for air-fuel ratio control

#438
20170356375
2017-12-14

System and method for improving cylinder deactivation

#439
20170356374
2017-12-14

System and method for mitigating cylinder deactivation degradation

#440
20170356373
2017-12-14

System and method for operating an engine oil pump

#441
20170356372
2017-12-14

System and method for intake manifold pressure control

#442
20170356371
2017-12-14

System and method for controlling busyness of cylinder mode changes

#443
20170356370
2017-12-14

System and method for controlling engine torque while deactivating engine cylinders

#444
20170356369
2017-12-14

System and method for selecting a cylinder deactivation mode

#445
20170356368
2017-12-14

Active cylinder configuration for an engine including deactivating engine cylinders

#446
20170356367
2017-12-14

System for method for controlling engine knock of a variable displacement engine

#447
20170356366
2017-12-14

System and method for determining engine knock

#448
20170356365
2017-12-14

System and method for controlling engine knock

#449
20170356364
2017-12-14

System and method for reactivating engine cylinders

#450
20170356363
2017-12-14

Method and system for determining air-fuel ratio imbalance

#451
20170356362
2017-12-14

Control systems and methods for air fuel imbalance and cylinder deactivation

#452
20170356358
2017-12-14

System and method for adjusting intake manifold pressure

#453
20170356356
2017-12-14

Control device for internal combustion engine

#454
20170356355
2017-12-14

System for deactivating engine cylinders

#455
20170356353
2017-12-14

System for reactivating deactivated cylinders

#456
20170350334
2017-12-07

Method and device for operating a multi-cylinder internal combustion engine

#457
20170350333
2017-12-07

Methods and systems for cylinder misfire detection

#458
20170350332
2017-12-07

Method and system for determining air-fuel imbalance

#459
20170350331
2017-12-07

Torque estimation in a skip fire engine control system

#460
20170342922
2017-11-30

ENGINE TORQUE SMOOTHING

#461
20170342921
2017-11-30

Engine torque smoothing

#462
20170342920
2017-11-30

Engine torque smoothing

#463
20170328334
2017-11-16

Method and system for engine auto-ignition detection and mitigation

#464
20170328292
2017-11-16

Powertrain control system

#465
20170326979
2017-11-16

Vehicle control system

#466
20170321617
2017-11-09

DECEL FUEL CUT-OFF

#467
20170314431
2017-11-02

Positive crankcase ventilation systems and engine systems including the same

#468
20170306865
2017-10-26

Control method of engine system

#469
20170306864
2017-10-26

Skip fire transition control

#470
20170306859
2017-10-26

System and method for adjusting the lift state of a valve actuator and for adjusting the number of active cylinders in an engine to improve fuel economy

#471
20170306811
2017-10-26

Supercharged applied ignition internal combustion engine with exhaust-gas turbocharging and method for operating an internal combustion engine of said type

#472
20170299568
2017-10-19

Method to determine a cetane number of a fuel

#473
20170298848
2017-10-19

Variable displacement engine control system and method

#474
20170284328
2017-10-05

Method and device for detecting auto-ignitions in a spark ignition internal combustion engine

#475
20170276081
2017-09-28

METHOD OF CONTROLLING CYLINDER DEACTIVATION AND CDA SYSTEM APPLIED BY THE METHOD

#476
20170265395
2017-09-21

Power equipment with cylinder deactivation engine

#477
20170265382
2017-09-21

Lawn mower powered by cylinder deactivation engine

#478
20170260916
2017-09-14

Exhaust-gas-turbocharged internal combustion engine with partial deactivation

#479
20170260898
2017-09-14

Method for controlling transitions in a variable displacement engine

#480
20170254283
2017-09-07

Method and system for exhaust catalyst warming

#481
20170254279
2017-09-07

Vehicle and method of controlling a vehicle

#482
20170254278
2017-09-07

Engine control device

#483
20170253120
2017-09-07

Multipurpose vehicle

#484
20170241358
2017-08-24

Method and engine control device for identifying a longitudinal jerking of a motor vehicle

#485
20170234253
2017-08-17

Deceleration cylinder cut-off in a hybrid vehicle

#486
20170226944
2017-08-10

Method and system for pre-ignition control

#487
20170218867
2017-08-03

Multi-level skip fire

#488
20170218866
2017-08-03

Internal combustion engine air charge control

#489
20170218863
2017-08-03

METHOD AND DEVICE TO CONTROL EXHAUST GAS RECIRCULATION

#490
20170211491
2017-07-27

Control device for internal combustion engine with cylinder deactivation

#491
20170204802
2017-07-20

Process of controlling operation in a multi-cylinder engine

#492
20170204799
2017-07-20

Systems and methods for cylinder deactivation with deactivated cylinder pressure control

#493
20170204797
2017-07-20

Techniques for controlling a dedicated EGR engine

#494
20170198652
2017-07-13

Engine control systems and methods for nitrogen oxide reduction

#495
20170198651
2017-07-13

System and method for selective cylinder deactivation

#496
20170198650
2017-07-13

Method and apparatus for controlling cylinder deactivation of an internal combustion engine

#497
20170190332
2017-07-06

Control apparatus of powertrain with centrifugal pendulum absorber

#498
20170184064
2017-06-29

Fuel pump

#499
20170175681
2017-06-22

Control device for internal combustion engine that controls fuel supply to cylinders and prevents misfiring

#500
20170175659
2017-06-22

Vehicle behavior control device

#501
20170175656
2017-06-22

Control system for an internal combustion engine

#502
20170167461
2017-06-15

Control device for internal combustion engine

#503
20170167424
2017-06-15

Method and system for pre-ignition control

#504
20170159594
2017-06-08

GDCI cold start misfire prevention

#505
20170159590
2017-06-08

Engine system for vehicle

#506
20170159581
2017-06-08

Method and system for diesel cylinder deactivation

#507
20170152826
2017-06-01

Method of detecting a clogging of a fuel injector in an internal combustion engine

#508
20170152781
2017-06-01

System and method to improve aftertreatment in an internal combustion engine

#509
20170130630
2017-05-11

Lean burn internal combustion engine exhaust gas temperature control

#510
20170122237
2017-05-04

Internal combustion engine control for improved fuel efficiency

#511
20170122236
2017-05-04

Device for controlling driving mode and method for controlling driving mode using the same

#512
20170122235
2017-05-04

System and method for adjusting weighting values assigned to errors in target actuator values of an engine when controlling the engine using model predictive control

#513
20170122234
2017-05-04

Methods and systems for improving boost response

#514
20170122199
2017-05-04

Two-stroke opposed piston internal combustion engine

#515
20170120889
2017-05-04

Powertrain and control method with selective pursuit of optimal torque targets

#516
20170114745
2017-04-27

Pre-chamber fuel admission valve diagnostics

#517
20170114739
2017-04-27

Method and system for engine control

#518
20170114735
2017-04-27

INTERNAL COMBUSTION ENGINE WITH ALTERNATING CYLINDER SHUTDOWN

#519
20170114729
2017-04-27

Engine system with valve stop

#520
20170114697
2017-04-27

Systems and methods of an on-board NOx monitor reset test

#521
20170107917
2017-04-20

System and method for controlling a variable valve actuation system to reduce delay associated with reactivating a cylinder

#522
20170101956
2017-04-13

Valve fault detection

#523
20170101009
2017-04-13

Wheelie suppressing device

#524
20170080916
2017-03-23

Non-uniform displacement engine control system employing cylinder deactivation and method for controlling non-uniform displacement engine control system employing cylinder deactivation

#525
20170074185
2017-03-16

Cylinder deactivation for catalyst drying

#526
20170067401
2017-03-09

Firing fraction management in skip fire engine control

#527
20170067400
2017-03-09

Digital internal combustion engine and method of control

#528
20170058804
2017-03-02

Engine Control Method and Engine Control System

#529
20170058803
2017-03-02

Cylinder cutout system and method

#530
20170051690
2017-02-23

Method of fuel injection for a variable displacement engine

#531
20170051689
2017-02-23

Noise, vibration and harshness reduction in a skip fire engine control system

#532
20170051688
2017-02-23

Method and system for pre-ignition control

#533
20170045111
2017-02-16

Torsional vibration absorption system

#534
20170045001
2017-02-16

Engine control device

#535
20170030299
2017-02-02

LPG DIRECT INJECTION ENGINE

#536
20170030279
2017-02-02

Exhaust-gas-turbocharged internal combustion engine with partial deactivation and method for operating an internal combustion engine

#537
20170030278
2017-02-02

REDUCING FIRING DECISION LATENCY IN SKIP FIRE ENGINE OPERATION

#538
20170030257
2017-02-02

ENHANCING CYLINDER DEACTIVATION BY ELECTRICALLY DRIVEN COMPRESSOR

#539
20170022915
2017-01-26

CYLINDER DEACTIVATION APPARATUS OF ENGINE AND CONTROL METHOD THEREOF

#540
20170009729
2017-01-12

Multi-level skip fire

#541
20170002757
2017-01-05

In-engine heating mode by increasing load

#542
20160377007
2016-12-29

Using cylinder firing history for combustion control in a skip fire engine

#543
20160369710
2016-12-22

Method and system for an engine

#544
20160363091
2016-12-15

Methods and system mitigating direct injection degradation

#545
20160363083
2016-12-15

Air per cylinder determination systems and methods

#546
20160363067
2016-12-15

System and method for determining the speed of an engine when one or more cylinders of the engine are deactivated

#547
20160363063
2016-12-15

System and method for controlling actuators of an engine to adjust intake airflow when the engine is starting

#548
20160363062
2016-12-15

Firing fraction management in skip fire engine control

#549
20160363057
2016-12-15

System and method for controlling an engine using model predictive control to minimize the effect of changes in valve lift state on engine operation

#550
20160326969
2016-11-10

Averaging filter for skip fire engine operation

#551
20160312721
2016-10-27

Method for regenerating a NOstorage catalytic converter

#552
20160312687
2016-10-27

Two-stage supercharging internal combustion engine having an exhaust-gas aftertreatment arrangement, and method for operating a two-stage supercharged internal combustion engine

#553
20160298557
2016-10-13

Internal combustion engine and a method for controlling an internal combustion engine

#554
20160281618
2016-09-29

Multi-level skip fire

#555
20160258410
2016-09-08

System and method for controlling spark timing based on a duration of a fuel burn within a cylinder in an engine

#556
20160258376
2016-09-08

Method and system for determining air-fuel ratio imbalance

#557
20160258375
2016-09-08

Method and system for determining air-fuel ratio imbalance

#558
20160252023
2016-09-01

METHOD AND APPARATUS FOR DETERMINING OPTIMUM SKIP FIRE FIRING PROFILE WITH ROUGH ROADS AND ACOUSTIC SOURCES

#559
20160245191
2016-08-25

Control device for supercharged engine

#560
20160237920
2016-08-18

Engine control apparatus

#561
20160230712
2016-08-11

Systems and methods for engine control

#562
20160222899
2016-08-04

Method and system for exhaust catalyst warming

#563
20160222898
2016-08-04

Method and system for maintaining a DFSO

#564
20160215722
2016-07-28

Method for detecting defective injectors of an internal combustion engine

#565
20160215710
2016-07-28

Ignition plug for a cylinder in a combustion engine

#566
20160215705
2016-07-28

Engine control apparatus

#567
20160215681
2016-07-28

Method for operating a combustion engine having a split cooling system and cylinder shutdown

#568
20160208718
2016-07-21

Method and apparatus to stabilize engine state selection using an energy based stabilization strategy for hybrid powertrain systems

#569
20160201636
2016-07-14

Internal combustion engine leakage detection apparatus

#570
20160201586
2016-07-14

Noise, vibration and harshness reduction in a skip fire engine control system

#571
20160201532
2016-07-14

Idle speed GPF regeneration

#572
20160195031
2016-07-07

Partial deactivation of an internal combustion engine

#573
20160169170
2016-06-16

Methods and systems for increasing airflow through a charge air cooler to decrease charge air cooler condensate

#574
20160169167
2016-06-16

Internal combustion engine for a motor vehicle, and method for operating such an internal combustion engine

#575
20160146140
2016-05-26

OPERATION OF A QUANTITY-CONTROLLED INTERNAL COMBUSTION ENGINE HAVING CYLINDER DEACTIVATION

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2016-05-26

Method and system for air charge estimation

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Combination cylinder state and transmission gear control systems and methods

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2016-05-26

Systems and methods for LP-EGR delivery in a variable displacement engine

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Method for pre-ignition control

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2016-05-26

Method for pre-ignition control in a pre-delivery phase

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Deceleration cylinder cut-off

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2016-05-26

Controller for variable valve mechanism

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2016-05-26

Polyhydroxyalkanoate compositions and microbial cultures for making the same

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Method of determining fuel injector opening degree

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System and method for enabling a user to adjust the operation of a powertrain in a vehicle, to adjust the appearance of a user interface device in the vehicle, and/or to adjust vehicle noise

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Turbocharged engine employing cylinder deactivation

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Methods and systems for cylinder bank misfire detection and reactivation

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Multi-level skip fire

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CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE

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Method and system for engine temperature control

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Method and system for particulate matter control

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Method of controlling a turbocharged engine

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Method and system for selective cylinder deactivation

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2016-04-21

If method and system for engine knock control

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Asymmetry CDA engine

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Methods and system for reactivating engine cylinders

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Internal combustion engine control apparatus

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Method and system for improving turbocharger efficiency

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Method for controlling vibrations during transitions in a variable displacement engine

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Method for controlling transitions in a variable displacement engine