ClassID:

139447

F02D19/021 - 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 gaseous fuels Control of components of the fuel supply system

Sub-classes:
Recent Application in this class:
#1
20260132749
2026-05-14

HYDROGEN COMBUSTION ENGINE ARRANGEMENT AND METHOD OF OPERATING A HYDROGEN COMBUSTION ENGINE ARRANGEMENT

#2
20260117716
2026-04-30

SYSTEM AND METHOD FOR CONTROLLING FUEL SUBSTITUTION IN A DUAL FUEL ENGINE SYSTEM

#3
20250163870
2025-05-22

FUEL SUPPLY DEVICE

#4
20250146456
2025-05-08

FUEL INJECTOR

#5
20250146455
2025-05-08

FUEL INJECTION SYSTEM FOR HYDROGEN GAS

#6
20250092836
2025-03-20

SYSTEM AND METHOD FOR CONTROLLING FUEL SUBSTITUTION IN A DUAL FUEL ENGINE SYSTEM

#7
20250043745
2025-02-06

A PISTON AND AN INTERNAL COMBUSTION ENGINE SYSTEM

#8
20240218826
2024-07-04

HYDROGEN OPPOSED-PISTON ENGINE

#9
20240207808
2024-06-27

FUEL-REFORMING DEVICE AND FUEL-REFORMING METHOD

#10
20240200502
2024-06-20

CONTROLLER FOR HYDROGEN ENGINE

#11
20240200501
2024-06-20

Controller and control method for internal combustion engine

#12
20240068417
2024-02-29

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

#13
20240044296
2024-02-08

Gaseous fuel engine system and operating strategy for limiting crankcase fuel accumulation

#14
20230265786
2023-08-24

Hydrogen opposed-piston engine

#15
20230175446
2023-06-08

Methods and systems for skip fire in a multi fuel engine

#16
20230034824
2023-02-02

Methods and systems for engine cold-start

#17
20230014909
2023-01-19

Method and gas fuel injection unit for operating an internal combustion engine

#18
20220193629
2022-06-23

Fuel-reforming device and fuel-reforming method

#19
20220170415
2022-06-02

Engine system

#20
20220111831
2022-04-14

Motor generator control for fixed fuel source engine

#21
20200023832
2020-01-23

Motor generator control for fixed fuel source engine

#22
20190338713
2019-11-07

Gas tank arrangement

#23
20190078510
2019-03-14

High-efficiency two-stroke internal combustion engine

#24
20180119630
2018-05-03

Gas engine

#25
20170159612
2017-06-08

Method for operating an engine

#26
20170159582
2017-06-08

Recirculating system for a fuel supply system for a motor and method for supplying fuel to a motor of a vehicle through such a supply system

#27
20160265449
2016-09-15

Gaseous fuel engine and method of operating

#28
20160208679
2016-07-21

Gas engine

#29
20160032847
2016-02-04

Combustion control device for gas engine

#30
20150285189
2015-10-08

Hybrid fuel supply system and method for engine of vessel

#31
20150252737
2015-09-10

Electrical monitoring of gaseous fuel admission valves

#32
20150167589
2015-06-18

METHOD AND APPARATUS FOR CONTROLLING HIGH PRESSURE SHUT-OFF VALVE

#33
20140111327
2014-04-24

Methods and apparatuses for diagnosing leaks in a compressed natural gas delivery system

#34
20140020668
2014-01-23

Gas engine control device

#35
20130333638
2013-12-19

Vehicle with mixed gas generating system and vehicle with fuel producing system

#36
20130276758
2013-10-24

Gaseous fuel rail sensor diagnostics

#37
20070044769
2007-03-01

Control circuit for injectors having cut solenoids for LPI engines and cut solenoid control method and diagnostic method thereof

#38
18947103
2025-10-14

Hydrogen combustion engine arrangement and method of operating a hydrogen combustion engine arrangement

#39
17494099
2022-10-25

Operating strategy mitigating undesired combustion in dual fuel engine

#40
17347595
2022-10-04

Delay circuit for providing natural gas to an engine and systems, assemblies, and methods thereof