ClassID:

139468

F02D19/0628 - 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; Measuring or estimating parameters related to the fuel supply system Determining the fuel pressure, temperature or flow, the fuel tank fill level or a valve position

Sub-classes:
Recent Application in this class:
#1
20260022672
2026-01-22

ENGINE SYSTEM AND METHOD FOR DETERMINING FUEL CHARACTERISTICS

#2
20250361840
2025-11-27

BLENDING GASEOUS FUELS FOR ENERGY CONVERSION SYSTEMS

#3
20250146444
2025-05-08

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

#4
20250043740
2025-02-06

FUEL SYSTEM FOR A SPARK IGNITION ENGINE

#5
20250012224
2025-01-09

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

#6
20240392731
2024-11-28

DUAL FUEL ENGINE SYSTEM AND METHOD FOR CONTROLLING DUAL FUEL ENGINE SYSTEM

#7
20240309821
2024-09-19

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

#8
20240084747
2024-03-14

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

#9
20240084746
2024-03-14

Dual fuel engine system and method for controlling dual fuel engine system

#10
20230417198
2023-12-28

CONSTANT PRESSURE FUEL ENHANCEMENT SYSTEM AND METHOD

#11
20230184180
2023-06-15

Vaporizing methanol using exhaust gas and an electrical heating component

#12
20230034824
2023-02-02

Methods and systems for engine cold-start

#13
20220412276
2022-12-29

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

#14
20220412275
2022-12-29

System for predicting at least one characteristic parameter of a fuel

#15
20220290627
2022-09-15

Electronic control unit and fuel type analysis method

#16
20220082056
2022-03-17

Dual fuel generator

#17
20210396187
2021-12-23

GAS SUPPLY SYSTEM FOR A GAS ENGINE OR DUAL-FUEL ENGINE AND METHOD FOR OPERATING THE SAME

#18
20210381447
2021-12-09

DUAL-FUEL SUPPLY SYSTEM FOR DIRECT INJECTION

#19
20210340922
2021-11-04

Internal combustion engine system with temperature based output control

#20
20210115859
2021-04-22

Reverse flow detection system

#21
20210102506
2021-04-08

Dual fuel generator

#22
20210017918
2021-01-21

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

#23
20200248638
2020-08-06

Liquified gaseous fuel storage tank level calibration control system

#24
20190293016
2019-09-26

Methods and systems for determining fuel quality

#25
20190242307
2019-08-08

System and method to determine failure of a gas shut off valve

#26
20190226410
2019-07-25

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

#27
20190195149
2019-06-27

Method for starting a gaseous fuel combustion engine

#28
20190093572
2019-03-28

Control system of dual-fuel engine

#29
20190085791
2019-03-21

Fuel module system

#30
20190063339
2019-02-28

Dual-fuel internal combustion engine

#31
20190048808
2019-02-14

Fuel system for an internal combustion engine

#32
20180363570
2018-12-20

INTERNAL COMBUSTION ENGINE HAVING AN INJECTION AMOUNT CONTROL

#33
20180320605
2018-11-08

High pressure fluid control system and method of controlling pressure bias in an end use device

#34
20180274460
2018-09-27

Characterizing a mixed fuel flow period

#35
20180258868
2018-09-13

Engine device

#36
20180245545
2018-08-30

FUEL VOLATILITY SENSOR SYSTEM

#37
20180087461
2018-03-29

Dual-fuel internal combustion engine

#38
20180058348
2018-03-01

Fuel supply system, internal combustion engine system, and method for supplying an internal combustion engine with an LPG fuel

#39
20170298850
2017-10-19

System and methods for reducing particulate matter emissions

#40
20170234245
2017-08-17

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

#41
20170218837
2017-08-03

Gas quality virtual sensor for an internal combustion engine

#42
20170175657
2017-06-22

Starting a gaseous and pilot fueled engine

#43
20170174306
2017-06-22

METHOD FOR OPERATING ENGINE FOR VESSEL

#44
20170096954
2017-04-06

Method and apparatus for controlling fuel pressure in a gaseous fuelled internal combustion engine

#45
20170074182
2017-03-16

Method and system for controlling fuel pressure in a gaseous fuelled internal combustion engine

#46
20170022914
2017-01-26

Control device for adjusting first and second fuel ratios

#47
20170009680
2017-01-12

Control system and control method for internal combustion engine

#48
20160320363
2016-11-03

Method for determining the bulk modulus of fuels

#49
20160313163
2016-10-27

Method and control device for determining a gas consumption of a gas-powered engine

#50
20160298556
2016-10-13

System and method for supplying natural gas to dual fuel engine

#51
20160186682
2016-06-30

Zero flow lubrication for a high pressure fuel pump

#52
20160146123
2016-05-26

FUEL SWITCHING CONTROL METHOD FOR BI-FUEL VEHICLE

#53
20160131049
2016-05-12

Method for controlling fuel switching in bi-fuel vehicle

#54
20160102617
2016-04-14

Fuel system having multiple combustion modes

#55
20160096427
2016-04-07

Capless refueling system cleaning using engine vacuum

#56
20160084172
2016-03-24

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

#57
20150354473
2015-12-10

Gas pressure high and low detection

#58
20150330960
2015-11-19

Method and arrangement for determining a fuel quality

#59
20150322870
2015-11-12

System and method for emptying a tank

#60
20150308361
2015-10-29

Engine control system

#61
20150285166
2015-10-08

High pressure fuel pumps with mechanical pressure regulation

#62
20150252741
2015-09-10

EVALUATING GASEOUS FUEL ADMISSION VALVE OPERABILITY

#63
20150247469
2015-09-03

Dual fuel injection system

#64
20150240763
2015-08-27

Fuel interface modules and related systems and methods

#65
20150159578
2015-06-11

Method of diagnosing injector variability in a multiple injector system

#66
20150107677
2015-04-23

Fuel supply apparatus and fuel supply method

#67
20150101566
2015-04-16

Usage strategy for mixed gasoline and CNG fueled vehicles

#68
20150075499
2015-03-19

Method and apparatus for controlling fuel pressure in a gaseous fuelled internal combustion engine

#69
20150068506
2015-03-12

Multi-fuel control system and method

#70
20150068495
2015-03-12

Methods for adjusting fuel composition to increase liquid fuel heat tolerance

#71
20140358408
2014-12-04

Gaseous fuel injector activation

#72
20140352658
2014-12-04

System and method to diagnose fuel system pressure sensor

#73
20140338645
2014-11-20

Vehicle control apparatus and vehicle control method

#74
20140311460
2014-10-23

Fuel supply control apparatus for bi-fuel internal combustion engine, and method of switching fuel in bi-fuel internal combustion engine

#75
20140309909
2014-10-16

Combustion engine

#76
20140251292
2014-09-11

Fuel control system and associated method

#77
20140246508
2014-09-04

Gaseous metering control for dual fluid injector

#78
20140238340
2014-08-28

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

#79
20140216563
2014-08-07

Capless refueling system cleaning using engine vacuum

#80
20140174404
2014-06-26

Fuel system

#81
20140136080
2014-05-15

Control strategy for dual gaseous and liquid fuel internal combustion engine

#82
20140109853
2014-04-24

Internal combustion engine-reformer installation

#83
20140069385
2014-03-13

Fuel system for a multi-fuel engine

#84
20140041642
2014-02-13

Fuel supply apparatus, computer-readable storage medium, and method of controlling fuel supply apparatus

#85
20130338903
2013-12-19

System and method for compensating gaseous fuel injection

#86
20130327294
2013-12-12

Control apparatus for a multi-fuel internal combustion engine

#87
20130255646
2013-10-03

System and method for emptying a tank

#88
20130255636
2013-10-03

System and method for closing a tank valve

#89
20130174815
2013-07-11

Method for improving engine performance using a temperature managed fuel system

#90
20130066536
2013-03-14

SENSOR OUTPUT MODIFIER

#91
20130024094
2013-01-24

METHODS FOR CONTROLLING COMBUSTION OF BLENDED BIOFUELS

#92
20130019651
2013-01-24

ABNORMALITY DETECTION APPARATUS FOR FUEL PROPERTY DETECTION APPARATUS

#93
20130013173
2013-01-10

Fuel supply system for internal combustion engine

#94
20130000607
2013-01-03

Fuel supply apparatus for internal combustion engine

#95
20120318248
2012-12-20

Control device for internal combustion engine

#96
20120312255
2012-12-13

Operating an engine with reformate

#97
20120259498
2012-10-11

Hybrid vehicle propulsion system utilizing knock suppression

#98
20120253641
2012-10-04

METHOD AND A CONTROL DEVICE FOR CONTROLLING AN ENGINE

#99
20120240872
2012-09-27

Ignition control for reformate engine

#100
20120239276
2012-09-20

Fuel property determination system for internal combustion engine

#101
20120232748
2012-09-13

Method and device for diagnosing the operational state of a fuel supply system of an automobile internal combustion engine

#102
20120227720
2012-09-13

Fuel injection apparatus for internal combustion engine

#103
20120226425
2012-09-06

Method for optimizing the operation of a thermal engine by determining the proportion of oxygenated compounds in the fuel

#104
20120222400
2012-09-06

Methods and systems for emissions control in a dual fuel engine

#105
20120210988
2012-08-23

VARIABLE GAS SUBSTITUTION FOR DUEL FUEL ENGINE AND METHOD

#106
20120210981
2012-08-23

Engine with gaseous and/or liquid fuel injector

#107
20120191323
2012-07-26

INJECTOR EMULATION DEVICE

#108
20120167859
2012-07-05

Fuel system for a multi-fuel engine

#109
20120150419
2012-06-14

Fuel injector diagnostic for dual fuel engine

#110
20120145126
2012-06-14

Dual fuel supply system for an indirect-injection system of a diesel engine

#111
20120145096
2012-06-14

Engine system with reformer

#112
20120143480
2012-06-07

Method and system for engine control

#113
20120130621
2012-05-24

Reformate control via accelerometer

#114
20120060800
2012-03-15

Fuel mixture control system

#115
20120048242
2012-03-01

Fuel system for a multi-fuel engine

#116
20120004824
2012-01-05

NATURAL GAS AND DIESEL FUEL BLENDING SYSTEM

#117
20110308501
2011-12-22

Internal combustion engine control apparatus and control method for internal combustion engine control apparatus

#118
20110308500
2011-12-22

Control apparatus and control method for internal combustion engine

#119
20110288745
2011-11-24

Dual fuel engine control unit

#120
20110276253
2011-11-10

Bi-fuel control systems for automotive vehicles and related methods

#121
20110272045
2011-11-10

Fuel interface modules and related systems and methods

#122
20110257865
2011-10-20

Ignition timing controller of internal combustion engine

#123
20110247574
2011-10-13

Reformate control via accelerometer

#124
20110239750
2011-10-06

Alternative fuel concentration estimating system, vehicle comprising alternative fuel concentration estimating system, and alternative fuel concentration estimating method

#125
20110232601
2011-09-29

COMPRESSION IGNITION ENGINE WITH BLENDED FUEL INJECTION

#126
20110224884
2011-09-15

Fuel control system and associated method

#127
20110203263
2011-08-25

GASEOUS FUELED TWO-STROKE ENGINE

#128
20110179715
2011-07-28

Fuel reforming process for internal combustion engines

#129
20110168137
2011-07-14

Fuel supply apparatus and fuel supply method

#130
20110168133
2011-07-14

Approach for controlling fuel flow with alternative fuels

#131
20110166769
2011-07-07

Supplemental Vapor Fuel Injection System for Internal Combustion Engines

#132
20110166767
2011-07-07

Compensation for oxygenated fuels in a diesel engine

#133
20110146617
2011-06-23

AUTOMOTIVE FUEL TANK

#134
20110137537
2011-06-09

Operating an engine with reformate

#135
20110132326
2011-06-09

Reformate control via accelerometer

#136
20110132321
2011-06-09

Fuel injector diagnostic for dual fuel engine

#137
20110132284
2011-06-09

Method for operating an engine with variable charge density

#138
20110132283
2011-06-09

Ignition control for reformate engine

#139
20110120416
2011-05-26

MULTI-FUEL DIESEL INTERNAL COMBUSTION ENGINE

#140
20110106403
2011-05-05

Approach for reducing overheating of direct injection fuel injectors

#141
20110066352
2011-03-17

System and method for engine and fuel system maintenance

#142
20110029219
2011-02-03

Alternate fuel blending system and associated method

#143
20110023853
2011-02-03

Homogenizing fuel enhancement system

#144
20110017174
2011-01-27

Engine with gaseous and/or liquid fuel injector

#145
20110011381
2011-01-20

Internal combustion engine and method for adapting an internal combustion engine

#146
20110000549
2011-01-06

FUEL SUPPLY APPARATUS AND FUEL SUPPLY METHOD

#147
20100324803
2010-12-23

Data storage device

#148
20100324749
2010-12-23

CONTROL APPARATUS FOR FUEL REFORMER

#149
20100312459
2010-12-09

INTERNAL COMBUSTION ENGINE CONTROLLER

#150
20100312458
2010-12-09

Method and device for operating an internal combustion engine

#151
20100268444
2010-10-21

Controller for diesel engine and method of controlling diesel engine

#152
20100256931
2010-10-07

Method and system for monitoring freshness of fuel in vehicles

#153
20100252004
2010-10-07

Internal combustion engine that can be operated with different types of liquid fuel

#154
20100231371
2010-09-16

Fuel Nature Discriminating System for Working Machines, and Fuel Nature Discriminating Method for Working Machines

#155
20100224175
2010-09-09

Fuel injection device for internal combustion engine

#156
20100206059
2010-08-19

Malfunction diagnosing apparatus for internal combustion engines

#157
20100204928
2010-08-12

Fuel identification system and method

#158
20100170470
2010-07-08

Fuel delivery system for multi-fuel engine

#159
20100156443
2010-06-24

Fuel-aspect sensor

#160
20100155322
2010-06-24

Vehicle mounted fuel separation apparatus

#161
20100147262
2010-06-17

Engine fuel supply system

#162
20100145596
2010-06-10

Control apparatus and control method for internal combustion engine

#163
20100132435
2010-06-03

Determination of fuel characteristics and their influence on exhaust gas emissions during operation of an internal combustion engine

#164
20100121559
2010-05-13

Water Based Systems for Direct Injection Knock Prevention in Spark Ignition Engines

#165
20100121510
2010-05-13

Hybrid vehicle, control method for hybrid vehicle and computer-readable recording medium to record program for making computer execute control method

#166
20100116245
2010-05-13

Hybrid vehicle propulsion system utilizing knock suppression

#167
20100088008
2010-04-08

Internal combustion engine control device and internal combustion engine control system

#168
20100063708
2010-03-11

Diesel cycle internal combustion engine

#169
20100049425
2010-02-25

Fuel supply device for flexible-fuel internal combustion engine

#170
20100049424
2010-02-25

Fuel injection control apparatus for internal combustion engine

#171
20100043746
2010-02-25

Method and device for diagnosing an internal combustion engine; computer program and computer program product

#172
20100036593
2010-02-11

Fuel injection control apparatus for internal combustion engine

#173
20100036587
2010-02-11

Device for controlling internal combustion engines

#174
20100010726
2010-01-14

Controller for internal combustion engine

#175
20090320789
2009-12-31

Multi fuel co-injection system for internal combustion and turbine engines

#176
20090312935
2009-12-17

Method and apparatus for supplying fuel of LPG car having LPI system

#177
20090303466
2009-12-10

Apparatus for detecting properties of fuel for working machine

#178
20090299605
2009-12-03

Fuel ignition quality detection

#179
20090292445
2009-11-26

Method for determining the quality of the fuel for an internal combustion engine

#180
20090292443
2009-11-26

Approach for reducing overheating of direct injection fuel injectors

#181
20090287391
2009-11-19

Engine fuel control system

#182
20090271090
2009-10-29

System and control method for selecting fuel type for an internal combustion engine capable of combusting a plurality of fuel types

#183
20090251302
2009-10-08

Vehicle misfueling mitigation system and method

#184
20090234561
2009-09-17

METHOD TO ENABLE DIRECT INJECTION OF E85 IN FLEX FUEL VEHICLES BY ADJUSTING THE START OF INJECTION

#185
20090229588
2009-09-17

Method for determining the composition of a fuel blend

#186
20090216424
2009-08-27

DEVICE FOR A FUEL SYSTEM AT AN ENGINE POWERED VEHICLE

#187
20090210138
2009-08-20

Control device and control method for internal combustion engine

#188
20090199626
2009-08-13

Fuel delivery system and method

#189
20090198456
2009-08-06

Detection of fuel property based on change in rotational speed of engine

#190
20090178474
2009-07-16

Fuel composition estimation and control of fuel injection

#191
20090177370
2009-07-09

Estimation apparatus of alcohol component amount in fuel

#192
20090165762
2009-07-02

Fuel control system having cold start strategy

#193
20090165761
2009-07-02

Fuel control system having a cold start strategy

#194
20090165759
2009-07-02

Fuel management for vehicles equipped with multiple tanks for different grades of fuel

#195
20090139305
2009-06-04

Procedure for determining the proportions of components of a fuel mixture

#196
20090125209
2009-05-14

Process and system for controlling effective compression ratios in an engine cylinder

#197
20090114288
2009-05-07

METHOD FOR THE ONBOARD DETERMINATION OF THE VOLATILITY OF A FUEL

#198
20090112450
2009-04-30

Fuel Management System for Refueling a Fuel System for Improved Fuel Efficiency Utilizing Glycols

#199
20090105965
2009-04-23

Method for determining the ignitability of fuel with an unknown fuel quality

#200
20090076705
2009-03-19

POWER MODULATED, DUAL FUEL, SMALL DISPLACEMENT ENGINE CONTROL SYSTEM

#201
20090071447
2009-03-19

Virtual fuel sensor for dual fuel tank applications

#202
20090064977
2009-03-12

METHOD TO DETERMINE AN ALCOHOL CONTENT

#203
20090064976
2009-03-12

Learn correction feature for virtual flex fuel sensor

#204
20090038586
2009-02-12

Hybrid vehicle propulsion system utilizing knock suppression

#205
20090038585
2009-02-12

Hybrid vehicle propulsion system utilizing knock suppression

#206
20090025695
2009-01-29

Method for the operation of an internal combustion engine

#207
20090024304
2009-01-22

Control apparatus for an internal combustion engine

#208
20090024303
2009-01-22

Method for determining the composition of a fuel mixture

#209
20080312805
2008-12-18

Controller and control system for internal combustion engine

#210
20080262701
2008-10-23

Alternate fuel blending system and associated method

#211
20080245318
2008-10-09

Hydrogen-fueled internal combustion engine

#212
20080223453
2008-09-18

Ethanol compensated fuel density for fuel consumed calculation

#213
20080223344
2008-09-18

Internal combustion engine using hydrogen

#214
20080202449
2008-08-28

Engine System

#215
20080149078
2008-06-26

EXHAUST GAS RECIRCULATION METHODS AND APPARATUS FOR REDUCING NOx EMISSIONS FROM INTERNAL COMBUSTION ENGINES

#216
20080110419
2008-05-15

Internal combustion engine and starting control device of internal combustion engine

#217
20080105218
2008-05-08

System for generating hybrid fuel for a combustion engine

#218
20080098985
2008-05-01

Internal combustion engine system

#219
20080051978
2008-02-28

Control system for internal combustion engine

#220
20080035119
2008-02-14

System and method for determining ethanol content in fuel

#221
20080022982
2008-01-31

Variable Compression Ratio Internal Combustion Engine

#222
20080000450
2008-01-03

Method for recognizing a fuel type in a diesel engine

#223
20070288153
2007-12-13

Control apparatus and control method for internal combustion engine

#224
20070233360
2007-10-04

Fuel System

#225
20070215110
2007-09-20

Control strategy for engine employng multiple injection types

#226
20070215072
2007-09-20

Apparatus with mixed fuel separator and method of separating a mixed fuel

#227
20070215069
2007-09-20

Control for knock suppression fluid separator in a motor vehicle

#228
20070209609
2007-09-13

Engine system

#229
20070199539
2007-08-30

Method and apparatus for delivering two fuels to a direct injection internal combustion engine

#230
20070175459
2007-08-02

Fuel control system and associated method

#231
20070151527
2007-07-05

Internal combustion engine system with hydrogen generation capability

#232
20070028861
2007-02-08

Internal combustion engine system

#233
20060283423
2006-12-21

Control system for hydrogen addition internal combustion engine

#234
20060254133
2006-11-16

Method and device for operating a diesel motor using a fuel that comprises vegetable oils or recycled vegetable oils

#235
20060196472
2006-09-07

Control apparatus and control method for internal combustion engine

#236
20060187999
2006-08-24

Type identification system for diesel oil and method for identifying type of diesel oil

#237
20060081230
2006-04-20

Method for verification of at least one given fuel mixture ratio

#238
20060081223
2006-04-20

Heat exchanger module

#239
20050224060
2005-10-13

Exhaust gas recirculation methods and apparatus for reducing NOx emissions from internal combustion engines

#240
20050224055
2005-10-13

Device for determining fuel quality and corresponding method

#241
20050224042
2005-10-13

Hydrogen-used internal combustion engine

#242
20050217642
2005-10-06

Fuel supply system for an internal combustion engine

#243
20050205021
2005-09-22

Dual fuel engine

#244
20050188683
2005-09-01

Control device of hydrogen engine

#245
20050126551
2005-06-16

Control method and apparatus for use in an alcohol fueled internal combustion engine

#246
20050109317
2005-05-26

Control apparatus and control method for internal combustion engine

#247
20050109316
2005-05-26

Knocking control system and method for internal combustion engine using multiple fuels

#248
20050028791
2005-02-10

Internal combustion engine

#249
20050005904
2005-01-13

Direct injection engine system and start-up method for direct injection engine

#250
18658348
2025-08-05

Blending gaseous fuels for energy conversion systems

#251
18630414
2025-11-11

Fluid booster system

#252
18361117
2024-06-11

System and method for measuring fluid delivery from a multi-fluid injector

#253
18331200
2024-01-30

Fuel system for prime mover

#254
18130748
2024-04-09

Fluid booster system

#255
17645014
2023-03-07

Methods and systems for a multi-pressure fuel injection system

#256
17523005
2023-04-04

Fuel booster system

#257
17410665
2021-12-14

Fuel booster system

#258
17071057
2022-02-08

Systems and methods for reverse flow detect

#259
15688174
2018-10-09

Gasoline Reid Vapor Pressure detection with brushless fuel pump