ClassID:

139496

F02D19/081 - CPC Classification

Classification description:

Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels Adjusting the fuel composition or mixing ratio; Transitioning from one fuel to the other

Recent Application in this class:
#1
20260063084
2026-03-05

ENGINE SYSTEM AND OPERATING STRATEGY FORMING ENGINE STARTING CHARGE

#2
20260049581
2026-02-19

CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE, INTERNAL COMBUSTION ENGINE SYSTEM, AND METHOD OF CONTROLLING INTERNAL COMBUSTION ENGINE

#3
20250361840
2025-11-27

BLENDING GASEOUS FUELS FOR ENERGY CONVERSION SYSTEMS

#4
20250334081
2025-10-30

FLEX FUEL VEHICLE

#5
20250264066
2025-08-21

CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE, INTERNAL COMBUSTION ENGINE SYSTEM, AND METHOD OF CONTROLLING INTERNAL COMBUSTION ENGINE

#6
20250250945
2025-08-07

Method and Apparatus For Using Biofuels in Engines Having Emission Control Systems

#7
20250154910
2025-05-15

ENGINE AND METHOD OF CONTROLLING ENGINE

#8
20250146444
2025-05-08

SYSTEMS, METHODS, AND APPARATUS FOR OPERATION OF DUAL FUEL ENGINES

#9
20250043741
2025-02-06

FUEL SYSTEM FOR A SPARK IGNITION ENGINE

#10
20250043740
2025-02-06

FUEL SYSTEM FOR A SPARK IGNITION ENGINE

#11
20250012224
2025-01-09

System for remotely monitoring and controlling operation of a hydro-diesel engine

#12
20240418134
2024-12-19

METHODS AND SYSTEMS FOR MULTI-FUEL ENGINE

#13
20240360797
2024-10-31

Internal Combustion Engine Control Device

#14
20240309821
2024-09-19

System for remotely monitoring and controlling operation of a hydro-diesel engine

#15
20240309801
2024-09-19

Explosion Safe Electrolysis Unit

#16
20240301815
2024-09-12

Ultra Low Enhancement Gas Injection

#17
20240200517
2024-06-20

Internal combustion engine

#18
20240159194
2024-05-16

ENGINE

#19
20240093637
2024-03-21

ROLLOVER-SAFE ELECTROLYSIS UNIT FOR VEHICLES

#20
20240084747
2024-03-14

Systems, methods, and apparatus for operation of dual fuel engines

#21
20240068419
2024-02-29

Method and apparatus for using biofuels in engines having emission control systems

#22
20240068418
2024-02-29

Gaseous fuel engine operating strategy for improved derating performance using varied ratio fuel blend

#23
20240068417
2024-02-29

GASEOUS FUEL ENGINE SYSTEM OPERATING STRATEGY INCLUDING HYDROGEN FUELING AMOUNT BASED ON PERFORMANCE TARGET

#24
20240060454
2024-02-22

ENGINE, CONTROL DEVICE, AND CONTROL

#25
20240003306
2024-01-04

Method and device for the use of biodiesel in internal combustion engines with diesel cycle

#26
20230417198
2023-12-28

CONSTANT PRESSURE FUEL ENHANCEMENT SYSTEM AND METHOD

#27
20230415791
2023-12-28

Method and system for multi-fuel engine

#28
20230392560
2023-12-07

Mixed fuel system

#29
20230383703
2023-11-30

MULTI-FUEL SYSTEM AND METHOD FOR MANAGING PERFORMANCE

#30
20230358186
2023-11-09

Dual fuel engine operating strategy for optimized hydrogen and hydrocarbon fueling

#31
20230235708
2023-07-27

Vehicle control system and method

#32
20230193841
2023-06-22

Methods and systems for multi-fuel engine

#33
20230175430
2023-06-08

Dual fuel injection system for optimizing fuel usage and minimizing slip for diesel and gasoline engines

#34
20230160350
2023-05-25

METHOD FOR OPERATING AN ENGINE

#35
20230062236
2023-03-02

HHO Precision Injection System

#36
20230052188
2023-02-16

Onboard HHO Gas Generation System for Heavy Duty Trucks

#37
20220412276
2022-12-29

Systems, methods, and apparatus for operation of dual fuel engines

#38
20220389879
2022-12-08

Optimized fuel management system for direct injection ethanol enhancement of gasoline engines

#39
20220381191
2022-12-01

Mixed fuel engine

#40
20220341361
2022-10-27

Explosion safe electrolysis unit

#41
20220260005
2022-08-18

Dual fuel injection system for optimizing fuel usage and minimizing slip for diesel and gasoline engines

#42
20220185441
2022-06-16

Fuel supply system for eco-friendly ship

#43
20220065181
2022-03-03

Multi-fuel system and method

#44
20220034272
2022-02-03

Optimized fuel management system for direct injection ethanol enhancement of gasoline engines

#45
20220025826
2022-01-27

Fuel selection method and related system for a mobile asset

#46
20210404372
2021-12-30

Systems and method for controlling auto-ignition

#47
20210254568
2021-08-19

Optimized fuel management system for direct injection ethanol enhancement of gasoline engines

#48
20210246842
2021-08-12

INTERNAL COMBUSTION ENGINE AND METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE

#49
20210231066
2021-07-29

Systems and methods for improving fuel economy of internal combustion engines

#50
20210231062
2021-07-29

Internal combustion engine arrangement and method of controlling operation thereof

#51
20210189953
2021-06-24

INTERNAL COMBUSTION ENGINE

#52
20210172407
2021-06-10

Separating a fuel on-board a vehicle

#53
20210172396
2021-06-10

Method to control in any possible operating point the combustion of a compression ignition internal combustion engine with reactivity control through the fuel injection temperature

#54
20210164408
2021-06-03

Dynamic loads based on fuel type

#55
20210156321
2021-05-27

DIESEL METHANOL COMBINED COMBUSTION ENGINE AND CONTROL METHOD THEREOF

#56
20210131368
2021-05-06

Emission Control in an Engine Fuelled with a Combination of a Hydrocarbon Fuel and Hydrogen

#57
20210131367
2021-05-06

Optimized fuel management system for direct injection ethanol enhancement of gasoline engines

#58
20210131361
2021-05-06

Operating a compression ignition engine fuelled with a combination of a hydrocarbon fuel and hydrogen

#59
20210108556
2021-04-15

Dual fuel injection system for optimizing fuel usage and minimizing slip for diesel engines

#60
20210087983
2021-03-25

Internal combustion engine and method of operating an internal combustion engine

#61
20210017918
2021-01-21

Systems, methods, and apparatus for operation of dual fuel engines

#62
20210003084
2021-01-07

Optimized fuel management system for direct injection ethanol enhancement of gasoline engines

#63
20200370482
2020-11-26

Pressure coupled control method and system for diffusion combustion of natural gas engine

#64
20200362780
2020-11-19

Transient controller and method for dual fuel engine

#65
20200355131
2020-11-12

Multi-fuel system and method

#66
20200300186
2020-09-24

FUEL MANAGEMENT SYSTEM FOR VARIABLE ETHANOL OCTANE ENHANCEMENT OF GASOLINE ENGINES

#67
20200277906
2020-09-03

Internal combustion engine

#68
20200224597
2020-07-16

Optimized fuel management system for direct injection ethanol enhancement of gasoline engines

#69
20200217280
2020-07-09

System and method for on-board catalytic upgrading of hydrocarbon fuels

#70
20200191068
2020-06-18

Internal combustion engines which utilize multiple fuels and methods for the operation of such

#71
20200182165
2020-06-11

Supercritical reforming of fuels, without separate water supply, for internal combustion engines

#72
20200158031
2020-05-21

System and process for improving emission performance in engines

#73
20200158030
2020-05-21

COMPRESSION-IGNITION ENGINE AND CONTROL METHOD FOR COMPRESSION IGNITION ENGINE

#74
20200132010
2020-04-30

Diagnosis method for ethanol sensor of FFV and FFV operated thereby

#75
20200080521
2020-03-12

Propulsion system, and method for operating a propulsion system

#76
20200056557
2020-02-20

Optimized fuel management system for direct injection ethanol enhancement of gasoline engines

#77
20190390616
2019-12-26

Fuel blending system and method

#78
20190345886
2019-11-14

Methods and systems for engine control

#79
20190316531
2019-10-17

Heat exchanger configuration for adsorption-based onboard octane on-demand and cetane on-demand

#80
20190309697
2019-10-10

Fuel management system for variable ethanol octane enhancement of gasoline engines

#81
20190309695
2019-10-10

Internal combustion engines which utilize multiple fuels and methods for the operation of such

#82
20190293004
2019-09-26

Fuel selection method and related system for a mobile asset

#83
20190277189
2019-09-12

Dual fuel injection system for optimizing fuel usage and minimizing slip for diesel engines

#84
20190257253
2019-08-22

MULTIVARIABLE DYNAMIC CONTROL SYSTEM OF A MULTI-FUEL ENGINE

#85
20190249597
2019-08-15

Internal combustion engine

#86
20190234297
2019-08-01

Onboard HHO gas generation system for heavy duty trucks

#87
20190233956
2019-08-01

Rollover safe electrolysis unit for vehicles

#88
20190233951
2019-08-01

Explosion safe electrolysis unit

#89
20190226410
2019-07-25

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

#90
20190211757
2019-07-11

Internal Combustion Engine Fuel Gas Blending System

#91
20190162123
2019-05-30

Gas Internal Combustion Engine With Auxiliary Starting System

#92
20190153968
2019-05-23

Optimized fuel management system for direct injection ethanol enhancement of gasoline engines

#93
20190145339
2019-05-16

Fuel injector

#94
20190120163
2019-04-25

DUAL-FUEL INTERNAL COMBUSTION ENGINE

#95
20190085776
2019-03-21

DIESEL TO NATURAL GAS CONVERSION SYSTEM

#96
20190048812
2019-02-14

Method for operating an internal combustion piston engine

#97
20190048811
2019-02-14

Fuel management system for variable ethanol octane enhancement of gasoline engines

#98
20190040804
2019-02-07

Adaptive control strategy in dual fuel engine

#99
20190032618
2019-01-31

Deposit mitigation for gaseous fuel injectors

#100
20190017448
2019-01-17

System and process for improving emission performance in engines

#101
20180321105
2018-11-08

Dual fuel combustion intensity

#102
20180320607
2018-11-08

Method and an apparatus for controlling an internal combustion engine with a high pressure gas injection

#103
20180283291
2018-10-04

System, method, and apparatus for injecting a gas in a diesel engine

#104
20180274460
2018-09-27

Characterizing a mixed fuel flow period

#105
20180252173
2018-09-06

Alternate fueling systems and associated methods

#106
20180245547
2018-08-30

Separating a fuel on-board a vehicle

#107
20180223745
2018-08-09

Dual fuel cylinder deactivation control system and method

#108
20180216579
2018-08-02

Ship propulsion system, and method for operating a ship propulsion system

#109
20180202375
2018-07-19

Optimized fuel management system for direct injection ethanol enhancement of gasoline engines

#110
20180171890
2018-06-21

Dual Fumigation Homogeneous Charge Compression Ignition (DF-HCCI) Engine

#111
20180086996
2018-03-29

Hydro-fuel, method of manufacture and method of operating a diesel engine

#112
20180080393
2018-03-22

CONTROL DEVICE APPLIED TO HYBRID VEHICLE

#113
20180073467
2018-03-15

Natural gas supply system for providing conditioned natural gas to dual fuel engines

#114
20180073446
2018-03-15

SYSTEM TO CONTROL AND CONDITION THE SUPPLY OF NATURAL GAS TO BI-FUEL ENGINES

#115
20180066613
2018-03-08

Adjusting a fuel on-board a vehicle

#116
20180017021
2018-01-18

LPG bombe cooling system of bi-fuel vehicle

#117
20180016998
2018-01-18

Fuel management system for variable ethanol octane enhancement of gasoline engines

#118
20180010515
2018-01-11

Dual fuel architecture and method for cylinder bank cutout and increased gas substitution during light load conditions

#119
20170356357
2017-12-14

After-market gaseous fuel and petrol engine conversion system

#120
20170342916
2017-11-30

Apparatus for controlling gasoline-diesel complex combustion engine and method for controlling gasoline-diesel complex combustion engine

#121
20170298851
2017-10-19

Gaseous fuel injector activation

#122
20170298850
2017-10-19

System and methods for reducing particulate matter emissions

#123
20170298846
2017-10-19

DIESEL ENGINE COMBUSTION AND TEMPERATURE MANAGEMENT SYSTEM

#124
20170276077
2017-09-28

Method, device and mobile user terminal for adapting an energy utilization process of a motor vehicle

#125
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

#126
20170260917
2017-09-14

Engine system having unknown-fuel startup strategy

#127
20170241352
2017-08-24

Control apparatus for internal combustion engine

#128
20170234276
2017-08-17

Adjusting a fuel on-board a vehicle

#129
20170234249
2017-08-17

Control system for internal combustion engine, internal combustion engine and method of controlling internal combustion engine

#130
20170234245
2017-08-17

Systems, methods, and apparatus for operation of dual fuel engines

#131
20170226973
2017-08-10

Method for reducing carbon/coke in fuel injectors in dual fuel applications

#132
20170217554
2017-08-03

FUEL SUPPLY CONTROL SYSTEM AND CONTROL METHOD

#133
20170204792
2017-07-20

Ventilation controls for dual-fuel engines

#134
20170184003
2017-06-29

Filter failure diagnostic device for an internal combustion engine

#135
20170122226
2017-05-04

Multi-pulse injection events for a dual-fuel engine

#136
20170089278
2017-03-30

System and method for controlling an engine air-fuel ratio

#137
20170089273
2017-03-30

Dual-fuel engine combustion mode transition controls

#138
20170089272
2017-03-30

Control apparatus for internal combustion engine

#139
20170074201
2017-03-16

Multi-fuel engine controls including multi-factor cost optimization

#140
20170051685
2017-02-23

Engine systems and methods of operating an engine

#141
20170045003
2017-02-16

Fuel control systems for operating gasoline engines based on ethanol-water-hydrogen mixture fuels

#142
20170037795
2017-02-09

Bi-fuel engine with variable air fuel ratio

#143
20170030275
2017-02-02

Method and apparatus for controlling internal-combustion engine

#144
20170022914
2017-01-26

Control device for adjusting first and second fuel ratios

#145
20170009681
2017-01-12

Fuel mixture system and assembly

#146
20170009680
2017-01-12

Control system and control method for internal combustion engine

#147
20170009671
2017-01-12

Cylinder pressure based control of dual fuel engines

#148
20160369686
2016-12-22

Low reactivity, compression-ignition, opposed-piston engine

#149
20160326973
2016-11-10

Control device for internal combustion engine

#150
20160319735
2016-11-03

CHEMICAL FUEL CONDITIONING AND ACTIVATION

#151
20160290257
2016-10-06

Control system for a flexible fuel internal combustion engine

#152
20160290250
2016-10-06

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

#153
20160252027
2016-09-01

Differential fueling between donor and non-donor cylinders in engines

#154
20160245192
2016-08-25

Systems and methods for improving torque response of an engine

#155
20160177851
2016-06-23

Method for operating a spark ignited engine

#156
20160169143
2016-06-16

Multi-fuel system for internal combustion engines

#157
20160169142
2016-06-16

System and method for optimal fueling of an engine

#158
20160153375
2016-06-02

METHOD FOR OPERATING AN ENGINE

#159
20160138529
2016-05-19

Fuel management system for variable ethanol octane enhancement of gasoline engines

#160
20160123245
2016-05-05

Internal combustion engine control device

#161
20160102618
2016-04-14

Alternate fuel blending systems and associated methods

#162
20160084172
2016-03-24

Bi-fuel system and a method for operating such a system

#163
20160076492
2016-03-17

Fuel separation via fuel vapor management systems

#164
20160069287
2016-03-10

Substitution rate control system for an engine and an associated method thereof

#165
20160069252
2016-03-10

System and method for controlling operation of an engine

#166
20160061120
2016-03-03

Multi-source gaseous fuel blending manifold

#167
20160025029
2016-01-28

Dual-fuel engine with enhanced cold start capability

#168
20160010575
2016-01-14

Hydrogen fuel assist device for an internal combustion engine system

#169
20160010569
2016-01-14

Fuel system protection in a multi-fuel engine

#170
20160003170
2016-01-07

System and method for dual fuel engines

#171
20150377153
2015-12-31

Fuel selection method and related system for a mobile asset

#172
20150369117
2015-12-24

Optimized fuel management system for direct injection ethanol enhancement of gasoline engines

#173
20150330290
2015-11-19

Method and system for ignition energy control

#174
20150322904
2015-11-12

Systems and methods for improving operation of a highly dilute engine

#175
20150322870
2015-11-12

System and method for emptying a tank

#176
20150315990
2015-11-05

DIESEL ENGINE COMBUSTION AND TEMPERATURE MANAGEMENT SYSTEM

#177
20150308366
2015-10-29

Air-fuel ratio control in a multi-fuel internal combustion engine

#178
20150292391
2015-10-15

Engine combustion control via fuel reactivity stratification

#179
20150275813
2015-10-01

Fuel system protection in a multi-fuel internal combustion engine

#180
20150267626
2015-09-24

Homogenizing fuel enhancement system and gas processor for use therein

#181
20150247470
2015-09-03

System and method of injecting natural gas in liquid form into a diesel engine

#182
20150184604
2015-07-02

Diesel fuel engine injection system and method therefor

#183
20150176509
2015-06-25

System and method for controlling a dual fuel engine

#184
20150128901
2015-05-14

Open-valve port fuel injection of alcohol in multiple injector engines

#185
20150122216
2015-05-07

METHOD AND SYSTEM TO IMPROVE ATOMIZATION AND COMBUSTION OF HEAVY FUEL OILS

#186
20150114359
2015-04-30

Fuel separation system for reducing parasitic losses

#187
20150107677
2015-04-23

Fuel supply apparatus and fuel supply method

#188
20150101566
2015-04-16

Usage strategy for mixed gasoline and CNG fueled vehicles

#189
20150096530
2015-04-09

Fuel system protection in a multi-fuel system internal combustion engine

#190
20150083080
2015-03-26

Methods and systems for determining engine spark timing

#191
20150075471
2015-03-19

Methods for the preparation and delivery of fuel compositions

#192
20150068506
2015-03-12

Multi-fuel control system and method

#193
20150068495
2015-03-12

Methods for adjusting fuel composition to increase liquid fuel heat tolerance

#194
20150052877
2015-02-26

Octane separation system and operating method

#195
20150047614
2015-02-19

Dual fuel system for internal combustion engine and leakage limiting seal strategy for same

#196
20150047252
2015-02-19

Hybrid fuel and method of making the same

#197
20150046069
2015-02-12

Minimizing alcohol use in high efficiency alcohol boosted gasoline engines

#198
20150046065
2015-02-12

Method and system for transient fuel control

#199
20150034058
2015-02-05

Fuel supply control device for diesel engine

#200
20150034045
2015-02-05

Engine combustion control at low loads via fuel reactivity stratification

#201
20150000638
2015-01-01

Multi-fuel system for internal combustion engines

#202
20140373811
2014-12-25

Fuel management system for variable ethanol octane enhancement of gasoline engines

#203
20140361103
2014-12-11

Three-way needle control valve and dual fuel injection system using same

#204
20140358407
2014-12-04

Gaseous fuel injector activation

#205
20140358405
2014-12-04

Internal combustion engine operating on different reactivity fuels

#206
20140343825
2014-11-20

Fuel management system for variable ethanol octane enhancement of gasoline engines

#207
20140331970
2014-11-13

Direct injection of diluents or secondary fuels in gaseous fuel engines

#208
20140325839
2014-11-06

Dimethyl ether (DME) enhanced gasoline engine

#209
20140311469
2014-10-23

Apparatus and methods for providing blended natural gas to at least one engine

#210
20140309909
2014-10-16

Combustion engine

#211
20140299104
2014-10-09

System and method for estimating the richness of the gaseous mixture in the combustion chamber of an internal combustion engine of a motor vehicle power plant

#212
20140261326
2014-09-18

Injection device, internal combustion engine, and method for operating an internal combustion engine

#213
20140251292
2014-09-11

Fuel control system and associated method

#214
20140246508
2014-09-04

Gaseous metering control for dual fluid injector

#215
20140245995
2014-09-04

Dual fuel system for an internal combustion engine

#216
20140238340
2014-08-28

Apparatus and method for fuelling a flexible-fuel internal combustion engine

#217
20140222319
2014-08-07

Minimizing alcohol use in high efficiency alcohol boosted gasoline engines

#218
20140222317
2014-08-07

Multi-fuel system and method

#219
20140216395
2014-08-07

Fuel management system for variable ethanol octane enhancement of gasoline engines

#220
20140214306
2014-07-31

Method and system for engine control

#221
20140209066
2014-07-31

Control system for a dual-fuel engine

#222
20140196702
2014-07-17

Ignition and knock tolerance in internal combustion engine by controlling EGR composition

#223
20140190447
2014-07-10

Control system for a multi-fuel internal combustion engine

#224
20140180561
2014-06-26

Method for controlling fuel injection for a dual fuel engine

#225
20140136080
2014-05-15

Control strategy for dual gaseous and liquid fuel internal combustion engine

#226
20140102406
2014-04-17

Engine combustion control via fuel reactivity stratification

#227
20140074380
2014-03-13

GAS SUBSTITUTION CONTROL SYSTEM AND METHOD FOR BI-FUEL ENGINE

#228
20140069386
2014-03-13

Limp home capable dual fuel engine and machine using same

#229
20140069385
2014-03-13

Fuel system for a multi-fuel engine

#230
20140034024
2014-02-06

Control device and method for internal combustion engine

#231
20140034021
2014-02-06

Fuel rail assembly including fuel separation membrane

#232
20140032084
2014-01-30

Temperature-Controlled Combustion System and Method

#233
20140032082
2014-01-30

Reactivity controlled compression ignition engine operating on a Miller cycle with low pressure loop exhaust gas recirculation system and method

#234
20140026855
2014-01-30

Split-cycle, reactivity controlled compression ignition engine and method

#235
20140026853
2014-01-30

Low temperature dual fuel combustion utilizing diesel and methanol fuels

#236
20140026847
2014-01-30

System and method for adjusting fuel reactivity

#237
20140025277
2014-01-23

Control system for multi-fuel internal combustion engine

#238
20140020658
2014-01-23

Diesel engine for a LPG-diesel mixture

#239
20140007842
2014-01-09

Fuel supply apparatus

#240
20140000559
2014-01-02

Injection device, an internal combustion engine, and a method for operating an injection device for gasoline and CNG

#241
20130345950
2013-12-26

Fuel supply control system for multi-fuel internal combustion engine

#242
20130338903
2013-12-19

System and method for compensating gaseous fuel injection

#243
20130327294
2013-12-12

Control apparatus for a multi-fuel internal combustion engine

#244
20130325297
2013-12-05

MULTI-FUEL INTERNAL COMBUSTION ENGINE AND CONTROL METHOD THEREFOR

#245
20130311066
2013-11-21

METHOD AND SYSTEM FOR ENGINE CONTROL

#246
20130306045
2013-11-21

Combustion Control via Homogeneous Combustion Radical Ignition (HCRI) or Partial HCRI in Cyclic IC Engines

#247
20130261937
2013-10-03

Fuel management system for variable ethanol octane enhancement of gasoline engines

#248
20130255646
2013-10-03

System and method for emptying a tank

#249
20130199163
2013-08-08

Fuel injection system of an internal combustion engine

#250
20130174800
2013-07-11

Apparatus for providing diluted fugitive gases as a fuel to an engine

#251
20130158848
2013-06-20

Fuel selection method and related system for a mobile asset

#252
20130158752
2013-06-20

Fuel optimizing system for a mobile asset, and a related method thereof

#253
20130144509
2013-06-06

Diesel fuel engine injection system and method therefor

#254
20130139790
2013-06-06

Two-phase fuel injection valve for diesel engine and gas engine including nozzle having pumping function

#255
20130133616
2013-05-30

Engine utilizing a plurality of fuels, and a related method thereof

#256
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2013-05-23

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