ClassID:

139489

F02D19/0684 - 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; Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers High pressure fuel injection systems; Details on pumps, rails or the arrangement of valves in the fuel supply and return systems

Recent Application in this class:
#1
20260110270
2026-04-23

MULTI-WALLED FUEL SYSTEM, METHOD OF OPERATING MULTI-WALLED FUEL SYSTEM, AND ENGINE CONTAINING MULTI-WALLED FUEL SYSTEM

#2
20250314211
2025-10-09

DUAL FUEL SYSTEM AND OPERATING STRATEGY METERING FUEL VIA VARIED FUEL PUMP OUTPUT

#3
20250114752
2025-04-10

HYDRO-DIESEL ENGINE SYSTEM HAVING SEPARATE AGITATION MIXING AND CHEMICAL MIXING OF HYDROGEN GAS INTO LIQUID DIESEL FUEL

#4
20250101926
2025-03-27

DUAL FUEL SYSTEM FOR ENGINE HAVING FUEL-ACTUATED FUEL PUMP AND METHOD

#5
20200400083
2020-12-24

Fuel exchange system and fuel supply system for fuel systems

#6
20200362804
2020-11-19

Method and control device for operating a common-rail fuel supply system

#7
20200240376
2020-07-30

Fuel rail

#8
20200025114
2020-01-23

Fuel exchange system and fuel supply system for fuel systems

#9
20200003169
2020-01-02

Fuel injection system

#10
20200003168
2020-01-02

Valve needle

#11
20200003133
2020-01-02

Fuel injection valve

#12
20200003132
2020-01-02

Fuel supply valve for a slurry fuel injector valve

#13
20190338713
2019-11-07

Gas tank arrangement

#14
20190293017
2019-09-26

System and methods for operating fuel system responsive to inferred fuel temperature

#15
20190162124
2019-05-30

Drive system and method for operating a drive system

#16
20190120149
2019-04-25

Dual-fuel fuel injection system for an internal combustion engine

#17
20180252173
2018-09-06

Alternate fueling systems and associated methods

#18
20180223780
2018-08-09

Multi-fuel rail apparatus

#19
20180216543
2018-08-02

Vehicle drive system, and method for operating a vehicle drive system

#20
20180058348
2018-03-01

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

#21
20170356357
2017-12-14

After-market gaseous fuel and petrol engine conversion system

#22
20160377041
2016-12-29

Multiple element firing strategy for cryogenic pump

#23
20160245194
2016-08-25

Two-fuel injection system and implementation method using same

#24
20160186682
2016-06-30

Zero flow lubrication for a high pressure fuel pump

#25
20160146123
2016-05-26

FUEL SWITCHING CONTROL METHOD FOR BI-FUEL VEHICLE

#26
20160131049
2016-05-12

Method for controlling fuel switching in bi-fuel vehicle

#27
20160102618
2016-04-14

Alternate fuel blending systems and associated methods

#28
20160084172
2016-03-24

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

#29
20160047347
2016-02-18

Fuel system for an internal combustion piston engine and a method of operating an internal combustion engine

#30
20160032878
2016-02-04

Mechanical fuel pump deactivation

#31
20160032849
2016-02-04

Method and apparatus for fuel regulation

#32
20150361925
2015-12-17

Dual fuel common rail engine with co-axial quill assembly

#33
20150345455
2015-12-03

Vehicular liquid containment system and method for verifying integrity of same

#34
20150330960
2015-11-19

Method and arrangement for determining a fuel quality

#35
20150330289
2015-11-19

Engine system having radial fuel injection

#36
20150285166
2015-10-08

High pressure fuel pumps with mechanical pressure regulation

#37
20150226140
2015-08-13

Hybrid pump control for multi fuel engine system

#38
20150136073
2015-05-21

Dual fuel injector and engine using same

#39
20150136072
2015-05-21

Dual fuel injector and engine using same

#40
20150114351
2015-04-30

MULTI-FUEL CO-INJECTION SYSTEM AND METHOD FOR INTERNAL COMBUSTION AND TURBINE ENGINES

#41
20140361103
2014-12-11

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

#42
20140311445
2014-10-23

Method of switching from a liquefied gas fuel to a liquid fuel being provided to a direct injection combustion engine, and direct injection bi-fuel system for such an engine

#43
20140238351
2014-08-28

Method and apparatus for pumping fuel to a fuel injection system

#44
20140202420
2014-07-24

Arrangement and method for an internal combustion engine with direct dual fuel injection

#45
20140182551
2014-07-03

Gaseous fuel system, direct injection gas engine system, and method

#46
20140034020
2014-02-06

Co-axial quill assembly retainer and dual fuel common rail engine using same

#47
20140020658
2014-01-23

Diesel engine for a LPG-diesel mixture

#48
20130327298
2013-12-12

Fuel-pumping system, method for operating a fuel-pumping system and fuel-injection system comprising a fuel-pumping system

#49
20130327296
2013-12-12

Dual fuel common rail engine with co-axial quill assembly

#50
20130311067
2013-11-21

Direct injection gas engine and method

#51
20130233284
2013-09-12

High-pressure fuel pump for an internal combustion engine with direct injection

#52
20130125867
2013-05-23

Dual fuel supply system for a direct-injection system of a diesel engine with on-board mixing

#53
20130118449
2013-05-16

System and method for circulating fuel through a direct injection pump of a bi-fuel engine

#54
20130087124
2013-04-11

Fuel system for injection of a fuel mixture in a combustion engine

#55
20130068186
2013-03-21

Method for operating a pressure ignition engine

#56
20130037622
2013-02-14

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

#57
20120325180
2012-12-27

Dual fuel injection compression ignition engine and method of operating same

#58
20120312280
2012-12-13

Fuel supply system and high-pressure pump for combustion engine

#59
20120285417
2012-11-15

Dual fuel injector and engine using same

#60
20120266987
2012-10-25

Coupling Body for Use in a Fuel Supply System, Coupling Housing, Coupling Member, Fuel Supply System Provided with Such a Coupling Body and Vehicle Provided with Such a Fuel Supply System

#61
20120240875
2012-09-27

Emulsion fuel enabling system and method

#62
20120186560
2012-07-26

HOMOGENIZING FUEL ENHANCEMENT SYSTEM

#63
20120174891
2012-07-12

Bi-fuel engine including system and method for reducing component temperature

#64
20120167859
2012-07-05

Fuel system for a multi-fuel engine

#65
20120145126
2012-06-14

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

#66
20120053815
2012-03-01

UPPER LEVEL KEY PARAMETER DEFINITION FOR SBS LOGICAL BIODIESEL SENSOR

#67
20110290203
2011-12-01

Approach for controlling fuel flow with alternative fuels

#68
20110247325
2011-10-13

Engine boost control for multi-fuel engine

#69
20110220063
2011-09-15

Fuel system for multi-fuel engine

#70
20110203263
2011-08-25

GASEOUS FUELED TWO-STROKE ENGINE

#71
20110168137
2011-07-14

Fuel supply apparatus and fuel supply method

#72
20110168133
2011-07-14

Approach for controlling fuel flow with alternative fuels

#73
20110155102
2011-06-30

DIRECT INJECTION BI-FUEL SYSTEM FOR COMBUSTION ENGINES

#74
20110130979
2011-06-02

Fuel viscosity detection apparatus

#75
20110088655
2011-04-21

Fuel injection control method for a direct injection gaseous-fuelled internal combustion engine

#76
20110073057
2011-03-31

Fuel system for multi-fuel engine

#77
20110036310
2011-02-17

HYDROGEN SUPPLY UNIT FOR INTERNAL COMBUSTION ENGINE AND METHOD OF OPERATING INTERNAL COMBUSTION ENGINE

#78
20110023853
2011-02-03

Homogenizing fuel enhancement system

#79
20110011382
2011-01-20

Engine boost control for multi-fuel engine

#80
20110011369
2011-01-20

Arrangement and Method for an Internal Combustion Engine with Direct Dual Fuel Injection

#81
20100324801
2010-12-23

System for supply of LPG/ammonia for direct-injection petrol or diesel engines

#82
20100288240
2010-11-18

Method of and apparatus for co-fuelling diesel engines

#83
20100288211
2010-11-18

Fuel system and method for burning liquid ammonia in engines and boilers

#84
20100268444
2010-10-21

Controller for diesel engine and method of controlling diesel engine

#85
20100258084
2010-10-14

FUEL-PUMPING SYSTEM, METHOD FOR OPERATING A FUEL-PUMPING SYSTEM AND FUEL-INJECTION SYSTEM COMPRISING A FUEL-PUMPING SYSTEM

#86
20100235073
2010-09-16

SBS logical bio-diesel sensor

#87
20100224167
2010-09-09

Warm up strategy for ethanol direct injection plus gasoline port fuel injection

#88
20100126468
2010-05-27

Method of manufacturing and installation of high pressure liquid LPG fuel supply and dual or mixed fuel supply systems

#89
20100088008
2010-04-08

Internal combustion engine control device and internal combustion engine control system

#90
20100063708
2010-03-11

Diesel cycle internal combustion engine

#91
20100030453
2010-02-04

Cetane number detection means and engine having the cetane number detection means

#92
20100030451
2010-02-04

Engine boost control for multi-fuel engine

#93
20100024789
2010-02-04

Fuel system for multi-fuel engine

#94
20090320789
2009-12-31

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

#95
20090320786
2009-12-31

Dual fuel system

#96
20090314262
2009-12-24

FUEL SUPPLY DEVICE FOR A DIESEL ENGINE AND METHOD FOR OPERATING A FUEL SUPPLY DEVICE FOR A DIESEL ENGINE

#97
20090235896
2009-09-24

Diesel cycle internal combustion engine

#98
20090229572
2009-09-17

High pressure common rail fuel system with gas injection

#99
20090178474
2009-07-16

Fuel composition estimation and control of fuel injection

#100
20090112442
2009-04-30

Control apparatus and method for internal combustion engine and fuel property determining apparatus and method

#101
20090070021
2009-03-12

Warm up strategy for ethanol direct injection plus gasoline port fuel injection

#102
20080283030
2008-11-20

Method to determine a fuel composition

#103
20080035119
2008-02-14

System and method for determining ethanol content in fuel

#104
20080022965
2008-01-31

Gas engine

#105
20080000450
2008-01-03

Method for recognizing a fuel type in a diesel engine

#106
20070289573
2007-12-20

Warm up strategy for ethanol direct injection plus gasoline port fuel injection

#107
20070204674
2007-09-06

Device for detecting cetane value of fuel used by an engine

#108
20070199539
2007-08-30

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

#109
20070125338
2007-06-07

Fuel injection system

#110
20070119414
2007-05-31

Warm up strategy for ethanol direct injection plus gasoline port fuel injection

#111
20060254133
2006-11-16

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

#112
20060081223
2006-04-20

Heat exchanger module

#113
20050217642
2005-10-06

Fuel supply system for an internal combustion engine

#114
20050205021
2005-09-22

Dual fuel engine

#115
18788520
2025-07-15

Dual fuel system having overflow buffer for hastening fuel switchover

#116
18653783
2025-09-23

Systems and methods for actively managing pilot fuel storage tanks

#117
18631664
2025-04-22

Fuel control system for internal combustion engine having multiple injection systems

#118
18373388
2025-02-25

Dual fuel engine system having fuel-actuated unit pumps and method

#119
18323897
2024-02-13

Two stage mixed fuel sensing system

#120
17645014
2023-03-07

Methods and systems for a multi-pressure fuel injection system

#121
15584586
2019-11-12

Cold start of internal combustion engine