Patents-Review.com
ClassID:

139700 ⎘

F02D41/1456 - CPC Classification

Classification description:

Electrical control of supply of combustible mixture or its constituents; Circuit arrangements for generating control signals; Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio with sensor output signal being linear or quasi-linear with the concentration of oxygen

Recent Application in this class:
#1
20230407776
2023-12-21

Exhaust gas control apparatus for internal combustion engine and exhaust gas control method for the same

 #2
20210372331
2021-12-02

Method for detecting coking in the inlet section of an internal combustion engine with a variable inlet valve lift controller

 #3
20210285394
2021-09-16

Control device for exhaust sensor

 #4
20210239019
2021-08-05

Method and systems for engine control

 #5
20210115869
2021-04-22

Air-fuel ratio control system and air-fuel ratio control method

 #6
20210108585
2021-04-15

Oxygen sensor system and method

 #7
20210047975
2021-02-18

Internal combustion engine cylinder air-fuel ratio imbalance detection and controls

 #8
20200191086
2020-06-18

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

 #9
20200032730
2020-01-30

Catalyst diagnosis device

 #10
20200025056
2020-01-23

Method and system for improving diagnosis of a catalyst

 #11
20200003141
2020-01-02

Pre-turbine wide-range oxygen sensor lambda control during scavenging

 #12
20190345858
2019-11-14

Method and systems for particulate matter control

 #13
20190331038
2019-10-31

Internal combustion engine cylinder air-fuel ratio imbalance detection and controls

 #14
20190309698
2019-10-10

Method for controlling an exhaust gas component filling level in an accumulator of a catalytic converter

 #15
20190302165
2019-10-03

Method for pinpointing a short-circuit

 #16
20190271274
2019-09-05

Inferential flow sensor

 #17
20190249616
2019-08-15

Control apparatus for an internal combustion engine

 #18
20190234330
2019-08-01

Exhaust gas control device, method, and computer program product for an engine

 #19
20190234326
2019-08-01

Systems and methods for intake system hydrocarbon trap diagnostics

 #20
20190218951
2019-07-18

Assembly and method for determining lambda values

 #21
20190195176
2019-06-27

Control device for internal combustion engine and control method for internal combustion engine

 #22
20190195153
2019-06-27

Systems and methods for EGR valve diagnostics

 #23
20190136778
2019-05-09

Exhaust purification system of internal combustion engine

 #24
20190136737
2019-05-09

Exhaust purification system of internal combustion engine

 #25
20190128198
2019-05-02

CONTROLLER AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE

 #26
20190093583
2019-03-28

Oil dilution rate calculation system of internal combustion engine

 #27
20190093580
2019-03-28

Controller and control method for internal combustion engine

 #28
20190040811
2019-02-07

Failure detection apparatus for fuel systems of engine

 #29
20190024597
2019-01-24

SMOKE AMOUNT ESTIMATION DEVICE AND COMBUSTION SYSTEM CONTROL DEVICE

 #30
20180363583
2018-12-20

Method for testing a moisture sensor of a diesel engine

 #31
20180334997
2018-11-22

Gas supply device for internal combustion engine and control method for the same

 #32
20180320626
2018-11-08

Methods and system for central fuel injection

 #33
20180306136
2018-10-25

Anomaly determination apparatus and control system

 #34
20180283304
2018-10-04

Exhaust purification system of internal combustion engine

 #35
20180274492
2018-09-27

Fuel vapor treatment apparatus

 #36
20180274470
2018-09-27

Control apparatus for engine

 #37
20180274462
2018-09-27

Engine control device

 #38
20180274427
2018-09-27

Abnormality diagnosis apparatus for exhaust gas purification apparatus

 #39
20180246157
2018-08-30

Short-circuit pinpointing device

 #40
20180230930
2018-08-16

Methods and system mitigating direct injection degradation

 #41
20180179973
2018-06-28

Control apparatus for internal combustion engine

 #42
20180179972
2018-06-28

Control apparatus for internal combustion engine

 #43
20180172633
2018-06-21

Gas detection device

 #44
20180171891
2018-06-21

Method and system for pulsed engine water injection

 #45
20180164266
2018-06-14

Test bench for simulating the electrical response of a wideband lambda sensor

 #46
20180149064
2018-05-31

Inferential sensor

 #47
20180142639
2018-05-24

Diagnosis system of internal combustion engine

 #48
20180135547
2018-05-17

Air-fuel ratio control device and air-fuel ratio control method

 #49
20180128149
2018-05-10

Methods and systems for operating an exhaust oxygen sensor based on water contact at the sensor

 #50
20180100458
2018-04-12

Method and system for secondary fluid injection control in an engine

 #51
20180080896
2018-03-22

Compensating oxygen sensor aging

 #52
20180073458
2018-03-15

Control device for an exhaust purification system of an internal combustion engine

 #53
20180073456
2018-03-15

Air-fuel ratio sensing device

 #54
20180073413
2018-03-15

NOx occlusion amount estimating device and NOx occlusion amount estimating method

 #55
20180066600
2018-03-08

Fuel injection control device for direct-injection engine

 #56
20180051622
2018-02-22

Method and apparatus for controlling an internal combustion engine

 #57
20180038319
2018-02-08

Methods and system for selecting a location for water injection in an engine

 #58
20180023494
2018-01-25

Controller and abnormality detecting method of air-fuel-ratio sensor

 #59
20170350332
2017-12-07

Method and system for determining air-fuel imbalance

 #60
20170314482
2017-11-02

Engine control device

 #61
20170306873
2017-10-26

Controlling an internal combustion engine

 #62
20170292465
2017-10-12

System and methods for controlling air fuel ratio

 #63
20170268438
2017-09-21

Method for operating an internal combustion engine based on a characteristic value determined from a lamda value, and internal combustion engine

 #64
20170248061
2017-08-31

System and method for determining exhaust temperature

 #65
20170218837
2017-08-03

Gas quality virtual sensor for an internal combustion engine

 #66
20170211495
2017-07-27

Methods and systems for estimating an air-fuel ratio with a variable voltage oxygen sensor

 #67
20170204800
2017-07-20

Methods and systems for estimating ambient pressure using an oxygen sensor

 #68
20170191438
2017-07-06

Method of detecting abnormality of air-fuel ratio sensor

 #69
20170191436
2017-07-06

Methods and systems for estimating an air-fuel ratio with a variable voltage oxygen sensor

 #70
20170152826
2017-06-01

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

 #71
20170152799
2017-06-01

Control method of boosting apparatus

 #72
20170138890
2017-05-18

Gas sensor control method

 #73
20170138245
2017-05-18

Deterioration diagnosis apparatus for exhaust gas purification apparatus

 #74
20170107927
2017-04-20

Method of operating a fuel injector

 #75
20170107918
2017-04-20

Method and system for determining knock control fluid composition

 #76
20170089278
2017-03-30

System and method for controlling an engine air-fuel ratio

 #77
20170089277
2017-03-30

Cylinder-by-cylinder air-fuel ratio controller for internal combustion engine

 #78
20170082045
2017-03-23

Method for humidity measurement enablement

 #79
20170074215
2017-03-16

Methods and systems for diagnosing an intake oxygen sensor based on pressure

 #80
20170067405
2017-03-09

Device for determining abnormality in engine system

 #81
20170037802
2017-02-09

Internal combustion engine

 #82
20170030272
2017-02-02

Fuel property estimation device

 #83
20170009695
2017-01-12

Control system and control method for internal combustion engine

 #84
20170009626
2017-01-12

Deterioration diagnosis apparatus for exhaust gas purification apparatus

 #85
20160377003
2016-12-29

Evaporated fuel processing apparatus

 #86
20160369728
2016-12-22

Method for estimating charge air cooler condensation storage and/or release with an intake oxygen sensor

 #87
20160363091
2016-12-15

Methods and system mitigating direct injection degradation

 #88
20160363087
2016-12-15

Methods and system for improving accuracy of injecting smaller amounts of fuel to an engine

 #89
20160363075
2016-12-15

Computer program for operating an internal combustion engine

 #90
20160348601
2016-12-01

Internal combustion engine

 #91
20160333811
2016-11-17

Fuel injector wear correction methodology

 #92
20160312732
2016-10-27

Engine controlling apparatus

 #93
20160312731
2016-10-27

Engine controlling apparatus

 #94
20160312730
2016-10-27

Calibration strategies to improve spinel mixed metal oxides catalytic converters

 #95
20160290269
2016-10-06

Exhaust purification system of internal combustion engine

 #96
20160290268
2016-10-06

Exhaust purification system of internal combustion engine

 #97
20160290266
2016-10-06

Abnormality diagnosis system of air-fuel ratio sensors

 #98
20160290250
2016-10-06

Method of estimating antiknock properties of multi-fuel injection internal combustion engine

 #99
20160290245
2016-10-06

Internal combustion engine

 #100
20160258372
2016-09-08

Method for adjusting the air-fuel ratio in the exhaust gas of a direct injection internal combustion engine for NOx storage catalytic converter regeneration

 #101
20160245723
2016-08-25

Abnormality diagnosis system of air-fuel ratio sensor

 #102
20160245213
2016-08-25

Methods and systems for an intake oxygen sensor

 #103
20160245208
2016-08-25

Engine-out emissions controls

 #104
20160245204
2016-08-25

Methods and systems for estimating an air-fuel ratio with a variable voltage oxygen sensor

 #105
20160245198
2016-08-25

Methods and systems for humidity determination via an oxygen sensor

 #106
20160245190
2016-08-25

Ambient humidity detection transmission shifts

 #107
20160237875
2016-08-18

Deterioration diagnosis device for an exhaust gas purification apparatus

 #108
20160230690
2016-08-11

Correction device for air/fuel ratio sensor

 #109
20160230683
2016-08-11

System and methods for diagnosing soot accumulation on an exhaust gas recirculation valve

 #110
20160230681
2016-08-11

Control system of engine

 #111
20160222898
2016-08-04

Method and system for maintaining a DFSO

 #112
20160215723
2016-07-28

Fuel control for dual fuel engines

 #113
20160215722
2016-07-28

Method for detecting defective injectors of an internal combustion engine

 #114
20160209352
2016-07-21

Gas sensor control device

 #115
20160208721
2016-07-21

Control apparatus and control method for internal combustion engine

 #116
20160186628
2016-06-30

Deterioration diagnosis apparatus for the exhaust gas purification apparatus

 #117
20160177847
2016-06-23

Methods and systems for diagnosing an intake oxygen sensor based on pressure

 #118
20160160778
2016-06-09

Diagnosis system of internal combustion engine

 #119
20160138527
2016-05-19

Intake oxygen sensor rationality diagnostics

 #120
20160138504
2016-05-19

Diagnosis system of internal combustion engine

 #121
20160131072
2016-05-12

Methods and systems for adjusting fueling of engine cylinders

 #122
20160131064
2016-05-12

Abnormality diagnosis system of air-fuel ratio sensor

 #123
20160131048
2016-05-12

Method and system for secondary fluid injection control in an engine

 #124
20160123266
2016-05-05

Gas engine

 #125
20160123262
2016-05-05

Gas sensor control device

 #126
20160123253
2016-05-05

Control device for internal combustion engine

 #127
20160115880
2016-04-28

Combustion control apparatus for internal combustion engine

 #128
20160103095
2016-04-14

Compensating oxygen sensor aging

 #129
20160084152
2016-03-24

Control apparatus for internal combustion engine

 #130
20160076474
2016-03-17

Air-fuel ratio control apparatus for internal combustion engine

 #131
20160069284
2016-03-10

Method for identifying fuel mixtures

 #132
20160069242
2016-03-10

Abnormality diagnosis system of air-fuel ratio sensor

 #133
20160061138
2016-03-03

Control apparatus for internal combustion engine

 #134
20160061130
2016-03-03

Control apparatus for internal combustion engine

 #135
20160017829
2016-01-21

Control system of internal combustion engine

 #136
20160017828
2016-01-21

Control system of internal combustion engine

 #137
20160017827
2016-01-21

Fuel shift monitor

 #138
20160011077
2016-01-14

Method and device for determining the lambda value with a broadband lambda sensor of an internal combustion engine, particularly of a motor vehicle

 #139
20160003181
2016-01-07

Control device of internal combustion engine

 #140
20150377170
2015-12-31

Air-fuel parameter control system, method and controller for compensating fuel film dynamics

 #141
20150369156
2015-12-24

Control system of internal combustion engine

 #142
20150369152
2015-12-24

Control device and control method of engine

 #143
20150362456
2015-12-17

Control unit for a gas concentration sensor

 #144
20150361913
2015-12-17

METHOD AND APPARATUS FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE WITH A LAMBDA SENSOR

 #145
20150354487
2015-12-10

Control device for internal combustion engine

 #146
20150354485
2015-12-10

Identification and rejection of asymmetric faults

 #147
20150337752
2015-11-26

Control device for internal combustion engine

 #148
20150337749
2015-11-26

Methods and systems for humidity and PCV flow detection via an exhaust gas sensor

 #149
20150330323
2015-11-19

Control device for internal combustion engine

 #150
20150308363
2015-10-29

Method and system of controlling exhaust after-treatment apparatus for vehicle

 #151
20150300283
2015-10-22

Control device for internal combustion engine based on in-cylinder temperature and oxygen concentration

 #152
20150298061
2015-10-22

Exhaust gas purification apparatus for an internal combustion engine

 #153
20150292424
2015-10-15

Method and system for control of an EGR valve during lean operation in a boosted engine system

 #154
20150292422
2015-10-15

Apparatus for detecting inter-cylinder air-fuel ratio imbalance in multi-cylinder internal combustion engine

 #155
20150275804
2015-10-01

Diagnosis device for fuel supply system

 #156
20150267627
2015-09-24

Method for determining the oxygen concentration Oin a gas flow

 #157
20150260610
2015-09-17

Cylinder-to-cylinder variation abnormality detecting device

 #158
20150260118
2015-09-17

Method for operating an internal combustion engine and corresponding internal combustion engine

 #159
20150247434
2015-09-03

Control device for internal combustion engine

 #160
20150211427
2015-07-30

Control device for internal combustion engine

 #161
20150204814
2015-07-23

Fault simulator for checking the diagnosis implemented in a control device for a lambda sensor in an internal combustion engine

 #162
20150204261
2015-07-23

Exhaust purification system of spark ignition type internal combustion engine

 #163
20150204260
2015-07-23

Purification apparatus of engine exhaust gas and method for purification of exhaust gas

 #164
20150204258
2015-07-23

One dimensional three way catalyst model for control and diagnostics

 #165
20150192085
2015-07-09

Methods and systems for fuel ethanol content determination via an oxygen sensor

 #166
20150192084
2015-07-09

Methods and systems for fuel ethanol content determination via an oxygen sensor

 #167
20150192081
2015-07-09

Methods and system for catalyst reactivation

 #168
20150184582
2015-07-02

Internal combustion engine

 #169
20150167577
2015-06-18

System and method of controlling fuel injection droplet size in an engine having an in cylinder pressure

 #170
20150167570
2015-06-18

Exhaust purification system for internal combustion engine

 #171
20150152769
2015-06-04

Catalyst deterioration determination system

 #172
20150128905
2015-05-14

System and method for diagnosing a fault in an oxygen sensor based on ambient temperature

 #173
20150107346
2015-04-23

Inter-cylinder air-fuel ratio variation abnormality detection apparatus

 #174
20150101564
2015-04-16

Methods and systems for an intake oxygen sensor

 #175
20150082771
2015-03-26

System for detecting a leakage in an intake line of an internal combustion engine

 #176
20150075503
2015-03-19

Methods and systems for an intake oxygen sensor

 #177
20150075502
2015-03-19

Methods and systems for an intake oxygen sensor

 #178
20150068505
2015-03-12

Cylinder-by-cylinder air-fuel-ratio controller for internal combustion engine

 #179
20150059700
2015-03-05

Vapor purging octane separation system

 #180
20150053186
2015-02-26

Learning of EGR valve lift and EGR valve flow transfer function

 #181
20150051812
2015-02-19

Two-stage catalyst regeneration

 #182
20150051811
2015-02-19

Sensor based measurement and purge control of fuel vapors in internal combustion engines

 #183
20150047603
2015-02-19

Method for estimating charge air cooler condensation storage and/or release with an intake oxygen sensor

 #184
20150047424
2015-02-19

Static and dynamic pressure compensation for intake oxygen sensing

 #185
20150047411
2015-02-19

Method for monitoring a broadband lambda probe

 #186
20150046101
2015-02-12

Fuel consumption calculation unit, fuel consumption measuring apparatus, and exhaust gas measuring apparatus

 #187
20150046063
2015-02-12

Exhaust gas sensor diagnosis and controls adaptation

 #188
20150041334
2015-02-12

Gas sensor control apparatus

 #189
20150020780
2015-01-22

Device and method for diagnosing evaporated fuel processing device

 #190
20140367276
2014-12-18

Method and apparatus for operating a linear lambda probe

 #191
20140358355
2014-12-04

Method and device for dynamic monitoring of gas sensors

 #192
20140338312
2014-11-20

Device and method for estimating ideal air-fuel ratio in internal combustion engine, method of estimating oxygen storage capacity of catalyst, internal combustion engine device and motorcycle incorporating internal combustion engine device

 #193
20140325960
2014-11-06

Method and device for detecting different exhaust gas probe errors during the operation of an internal combustion engine

 #194
20140316678
2014-10-23

Air-fuel ratio detection device and air-fuel ratio detection method

 #195
20140309908
2014-10-16

Electronically controlled lean out device for mechanical fuel injected engines

 #196
20140305103
2014-10-16

Control apparatus for internal combustion engine

 #197
20140303876
2014-10-09

Control system for internal combustion engine

 #198
20140288804
2014-09-25

Methods and systems for an oxygen sensor

 #199
20140288802
2014-09-25

Apparatus for detecting imbalance abnormality in air-fuel ratio between cylinders in multi-cylinder internal combustion engine

 #200
20140283801
2014-09-25

Inter-cylinder air-fuel ratio variation abnormality detection apparatus for multicylinder internal combustion engine

 #201
20140278013
2014-09-18

Fault diagnostic systems and methods using oxygen sensor impedance

 #202
20140278003
2014-09-18

Rejuvenation control of palladium-only diesel oxidation catalyst

 #203
20140250993
2014-09-11

Catalyst-degradation detection device

 #204
20140238368
2014-08-28

Exhaust gas sensor diagnosis and controls adaptation

 #205
20140216013
2014-08-07

Exhaust purification system for internal combustion engine

 #206
20140202437
2014-07-24

Methods and systems for humidity and PCV flow detection via an exhaust gas sensor

 #207
20140156205
2014-06-05

Inter-cylinder air-fuel ratio variation abnormality detection apparatus for multicylinder internal combustion engine

 #208
20140150760
2014-06-05

Methods and systems for a gas constituent sensor

 #209
20140144125
2014-05-29

SCR catalyst diagnostics

 #210
20140109883
2014-04-24

Lambda feedback control for robust particulate emissions performance

 #211
20140075924
2014-03-20

Correction device for air/fuel ratio sensor

 #212
20140069097
2014-03-13

Exhaust purification system for internal combustion engine

 #213
20140014081
2014-01-16

Diagnosis method and device for operating an internal combustion engine

 #214
20140005882
2014-01-02

Sensor characteristic correction device

 #215
20130338904
2013-12-19

Air-fuel ratio control apparatus for an internal combustion engine

 #216
20130325296
2013-12-05

Fuel injection amount control apparatus for an internal combustion engine

 #217
20130317727
2013-11-28

Method and apparatus for controlling a diagnostic module for an exhaust gas sensor

 #218
20130304356
2013-11-14

Cylinder-by-cylinder air-fuel ratio controller for internal combustion engine

 #219
20130289848
2013-10-31

Oxygen sensor output correction systems and methods

 #220
20130283787
2013-10-31

Supercharger-equipped internal combustion engine

 #221
20130283783
2013-10-31

Control apparatus for internal combustion engine

 #222
20130269324
2013-10-17

Air-fuel ratio control apparatus

 #223
20130269319
2013-10-17

Method and device for operating an internal combustion engine

 #224
20130261935
2013-10-03

Fuel component identification

 #225
20130245919
2013-09-19

LOW DIMENSIONAL THREE WAY CATALYST MODEL FOR CONTROL AND DIAGNOSTICS

 #226
20130234744
2013-09-12

Diagnosis method and control unit for performing a diagnosis of a lambda sensor of the UEGO type of an exhaust system for an internal combustion engine

 #227
20130231846
2013-09-05

Post catalyst dynamic scheduling and control

 #228
20130219984
2013-08-29

Method for diagnosing an electrical contact connection of an exhaust gas sensor

 #229
20130219862
2013-08-29

Control system for determining biofuel content

 #230
20130213363
2013-08-22

Method for operating an auto-ignition internal combustion engine

 #231
20130213016
2013-08-22

Emission control system for internal combustion engine

 #232
20130204511
2013-08-08

Air-fuel ratio imbalance detecting device and air-fuel ratio imbalance detecting method for internal combustion engine of vehicle

 #233
20130199283
2013-08-08

Method and device for diagnosing deviations in a single cylinder lambda control

 #234
20130199177
2013-08-08

Method and device for adapting signals of an oxygen sensor in the air supply channel of an internal combustion engine

 #235
20130197783
2013-08-01

Air-fuel ratio imbalance detecting device and air-fuel ratio imbalance detecting method for internal combustion engine

 #236
20130197782
2013-08-01

Air-fuel ratio imbalance determination apparatus and air-fuel ratio imbalance determination method

 #237
20130192210
2013-08-01

Emission control system for internal combustion engine

 #238
20130158841
2013-06-20

Internal combustion engine diagnostic device and internal combustion engine diagnostic method

 #239
20130152584
2013-06-20

Method for reducing sensitivity for engine scavenging

 #240
20130131962
2013-05-23

Air-fuel ratio control apparatus for internal combustion engine

 #241
20130110380
2013-05-02

Air-fuel ratio control apparatus for an internal combustion engine

 #242
20130104626
2013-05-02

System and method for diagnosing faults in an oxygen sensor

 #243
20130104529
2013-05-02

Exhaust gas emission control system for diesel engine

 #244
20130090834
2013-04-11

Air-fuel ratio control apparatus for internal combustion engine and method for controlling air-fuel ratio

 #245
20130086893
2013-04-11

Exhaust gas control apparatus for internal combustion engine

 #246
20130073184
2013-03-21

Inter-cylinder air-fuel ratio imbalance determining apparatus for internal combustion engine

 #247
20130054114
2013-02-28

Air-fuel ratio control device of internal combustion engine

 #248
20130054112
2013-02-28

Apparatus for controlling air-fuel ratio of internal-combustion engine

 #249
20130054083
2013-02-28

Catalyst oxygen storage capacity adjustment systems and methods

 #250
20130047956
2013-02-28

Control system and method for preventing stochastic pre-ignition in an engine

 #251
20130047589
2013-02-28

Exhaust purification system of internal combustion engine

 #252
20130024094
2013-01-24

METHODS FOR CONTROLLING COMBUSTION OF BLENDED BIOFUELS

 #253
20130018568
2013-01-17

Control apparatus and control method for internal combustion engine

 #254
20130006505
2013-01-03

Diagnostic apparatus for internal combustion engine

 #255
20130006499
2013-01-03

Internal combustion engine control apparatus

 #256
20120324864
2012-12-27

System and methods for controlling air fuel ratio

 #257
20120298085
2012-11-29

Fuel injection control apparatus for an internal combustion engine

 #258
20120297767
2012-11-29

System and method to control an electronically-controlled turbocharger

 #259
20120266647
2012-10-25

Device and method for diagnosing an exhaust gas sensor

 #260
20120255531
2012-10-11

INTER-CYLINDER AIR/FUEL RATIO IMBALANCE ABNORMALITY DETECTION APPARATUS AND INTER-CYLINDER AIR/FUEL RATIO IMBALANCE ABNORMALITY DETECTION METHOD FOR MULTICYLINDER INTERNAL COMBUSTION ENGINE

 #261
20120255281
2012-10-11

Method for adjusting engine air-fuel ratio

 #262
20120253642
2012-10-04

Apparatus for detecting imbalance abnormality in air-fuel ratio between cylinders in multi-cylinder internal combustion engine

 #263
20120240671
2012-09-27

Abnormality detection device for EGR device

 #264
20120232745
2012-09-13

Oxygen sensor control apparatus

 #265
20120216775
2012-08-30

Control device of spark-ignition gasoline engine

 #266
20120209498
2012-08-16

Air-fuel-ratio imbalance determination apparatus for internal combustion engine

 #267
20120186564
2012-07-26

Method for determining the oxygen concentration in a gas flow

 #268
20120186225
2012-07-26

Methods and apparatus to detect and inhibit low-speed pre-ignition in an engine

 #269
20120174900
2012-07-12

APPARATUS AND METHOD FOR DETECTING VARIATION ABNORMALITY IN AIR-FUEL RATIO BETWEEN CYLINDERS

 #270
20120174653
2012-07-12

PM emission amount estimation device for diesel engine

 #271
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