ClassID:

140681

F02M21/023 - CPC Classification

Classification description:

Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels; Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers Valves; Pressure or flow regulators in the fuel supply or return system

Sub-classes:
Recent Application in this class:
#1
20260055748
2026-02-26

SYSTEMS AND METHODS FOR AN ON-BOARD AMMONIA CRACKING SYSTEM WITH AN EXHAUST GAS CRACKING BYPASS FOR COLD START CONDITIONS

#2
20260028949
2026-01-29

SYSTEMS AND METHODS FOR SUPPLYING GASEOUS AMMONIA TO SERIALLY-CONNECTED AMMONIA CRACKING UNITS

#3
20250179956
2025-06-05

ROTARY ENGINE, PARTS THEREOF, AND METHODS

#4
20250178430
2025-06-05

RESERVE FUEL SYSTEM

#5
20250154923
2025-05-15

HYDROGEN CAPTURE CANISTER

#6
20250137420
2025-05-01

GAS SUPPLY SYSTEM

#7
20240360806
2024-10-31

INTAKE RUNNER FOR GASEOUS FUEL ENGINE, SYSTEM, AND METHOD

#8
20240352908
2024-10-24

FUEL SYSTEM FOR A POWER PLANT

#9
20240247622
2024-07-25

Intake runner for gaseous fuel engine, system, and method

#10
20240209768
2024-06-27

Prevention of Backfiring of a Pre-Chamber Gas Valve of a Combustion Engine

#11
20240208324
2024-06-27

Reserve fuel system

#12
20240207808
2024-06-27

FUEL-REFORMING DEVICE AND FUEL-REFORMING METHOD

#13
20240200513
2024-06-20

Gaseous fuel engine having non-axisymmetric fuel admission valve and method

#14
20240191665
2024-06-13

INTERNAL COMBUSTION ENGINE

#15
20240151359
2024-05-09

FUEL SYSTEMS HAVING MULTI-TANK PRESSURE-RELIEF DEVICES AND RELATED METHODS

#16
20240044285
2024-02-08

SYSTEMS AND METHODS FOR THE ON-BOARD CATALYTIC PRODUCTION OF HYDROGEN FROM AMMONIA USING A PLATE HEAT EXCHANGE CATALYST UNIT

#17
20240035365
2024-02-01

BI-FUEL RECIPROCATING ENGINE TO POWER DIRECT DRIVE TURBINE FRACTURING PUMPS ONBOARD AUXILIARY SYSTEMS AND RELATED METHODS

#18
20230374954
2023-11-23

GAS FUEL FILLING AND SUPPLYING SYSTEM

#19
20230304436
2023-09-28

Gaseous fuel reciprocating engine and operating methodology for reduced hydrogen flame speed

#20
20230151724
2023-05-18

Bi-fuel reciprocating engine to power direct drive turbine fracturing pumps onboard auxiliary systems and related methods

#21
20230060293
2023-03-02

Asynchronous rotary fuel valve

#22
20230003344
2023-01-05

A system having at least two cryogenic containers for providing a fluid

#23
20220275717
2022-09-01

Bi-fuel reciprocating engine to power direct drive turbine fracturing pumps onboard auxiliary systems and related methods

#24
20220260040
2022-08-18

Method and device for supplying a hydrogen internal combustion engine of a motor vehicle with hydrogen

#25
20220205418
2022-06-30

Activation of multiple gas needles using a 3/2 pilot valve

#26
20220195857
2022-06-23

Bi-fuel reciprocating engine to power direct drive turbine fracturing pumps onboard auxiliary systems and related methods

#27
20220193629
2022-06-23

Fuel-reforming device and fuel-reforming method

#28
20220120250
2022-04-21

Apparatus for testing spray and combustion performance of internal-combustion engines based on rapid compression-expansion machine

#29
20220072948
2022-03-10

Reserve fuel system

#30
20220003099
2022-01-06

Bi-fuel reciprocating engine to power direct drive turbine fracturing pumps onboard auxiliary systems and related methods

#31
20210372256
2021-12-02

Bi-fuel reciprocating engine to power direct drive turbine fracturing pumps onboard auxiliary systems and related methods

#32
20210317801
2021-10-14

Gas fuel supply system

#33
20210301775
2021-09-30

Device for supplying a gaseous fuel to an engine

#34
20210260961
2021-08-26

Pressure regulator warm up system for a transport refrigeration unit

#35
20210215094
2021-07-15

Two point fuel system for gas power generation

#36
20210148514
2021-05-20

Boil-off gas reliquefication system, method for discharging lubricating oil in boil-off gas reliquefication system, and engine fuel supply method

#37
20210094410
2021-04-01

Reserve fuel system

#38
20200340713
2020-10-29

Gas heat pump system

#39
20200200405
2020-06-25

Heat pump

#40
20200191416
2020-06-18

Heat pump

#41
20200149441
2020-05-14

Valve seat insert for engine having double-crowned seating surface profiled for limiting valve recession

#42
20200149440
2020-05-14

Valve seat insert for internal combustion engine profiled to resist valve recession

#43
20200072163
2020-03-05

Accumulator device

#44
20200063987
2020-02-27

Heat pump

#45
20200018249
2020-01-16

Monitoring the function of solenoid valves for fuel injection systems

#46
20190308485
2019-10-10

Pressure control valve system

#47
20190264623
2019-08-29

Liquefied gas fuel feeding system and a method of operating a power plant of internal combustion engines powered with liquefied gas

#48
20190203663
2019-07-04

LPG fuel system

#49
20190145367
2019-05-16

Control device for compression-ignition engine

#50
20190145352
2019-05-16

FUEL SUPPLY DEVICE WITH INLET VALVE

#51
20190128205
2019-05-02

METHOD FOR DETERMINING THE PROPER OPERATION OF A VALVE IN A GAS TANK SYSTEM

#52
20190120149
2019-04-25

Dual-fuel fuel injection system for an internal combustion engine

#53
20190101069
2019-04-04

Gas valve unit and a method of performing a pressure test to a gas valve unit

#54
20190040806
2019-02-07

Method of controlling gas engine and gas engine drive system

#55
20180312235
2018-11-01

Arrangement of cryogenic containers for LNG or CNG on a deck of a tugboat

#56
20180266629
2018-09-20

Space conserving integrated cryogenic fluid delivery system

#57
20180163667
2018-06-14

Dual-fuel engine with liquid-gas separation unit

#58
20180149285
2018-05-31

Extraction valve

#59
20180087461
2018-03-29

Dual-fuel internal combustion engine

#60
20180030931
2018-02-01

Compression system

#61
20180010537
2018-01-11

Fuel supply device for LPDI engine and start control method of LPDI engine having the fuel supply device

#62
20170328583
2017-11-16

Heat pump

#63
20170328582
2017-11-16

Heat Pump

#64
20170328581
2017-11-16

Heat pump

#65
20170314511
2017-11-02

Fuel storage system

#66
20170246951
2017-08-31

CNG fuel system for a vehicle

#67
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

#68
20170058838
2017-03-02

Fuel system for a combustion engine

#69
20160369711
2016-12-22

Natural gas leak detection through pressure loss in pneumatic starter and prelube

#70
20160348613
2016-12-01

MINI GAS VALVE UNIT

#71
20160319773
2016-11-03

Vehicular fuel cooling device

#72
20160146147
2016-05-26

MODULE FOR CONTROLLING FUEL PRESSURE IN AN INTERNAL COMBUSTION ENGINE

#73
20160047323
2016-02-18

Exhaust gas control device of gas engine

#74
20160032868
2016-02-04

Systems for thermal management of engine valves

#75
20160025593
2016-01-28

Detection of Stuck Plate Valve of Gaseous Engine

#76
20150377184
2015-12-31

Integrated gas nozzle check valve and engine using same

#77
20150369228
2015-12-24

Cryogennic liquefied gas intake/discharge valve body, reciprocating pump, and fuel gas supply device

#78
20150308356
2015-10-29

Bi-fuel engine

#79
20150300301
2015-10-22

Liquefied gas treatment system for vessel

#80
20150204285
2015-07-23

Multi-fuel engine system

#81
20150204284
2015-07-23

Multi-fuel engine system

#82
20150112506
2015-04-23

CNG fuel system for a vehicle

#83
20150059878
2015-03-05

Pressure regulating valve

#84
20150040546
2015-02-12

Internal combustion engines

#85
20150034054
2015-02-05

Plunger valve for a propane carburetor

#86
20140305406
2014-10-16

Variable pressure gaseous fuel regulator

#87
20140299101
2014-10-09

Method and apparatus for supplying a gaseous fuel to an internal combustion engine

#88
20140261695
2014-09-18

Apparatus and methods for providing natural gas to multiple engines disposed upon multiple carriers

#89
20140202429
2014-07-24

Compressed natural gas fuel mass control system

#90
20140182561
2014-07-03

Onboard CNG/CFG Vehicle Refueling and Storage Systems and Methods

#91
20140096539
2014-04-10

Cryogenic liquid delivery system and method with active pressure building capabilities

#92
20140075965
2014-03-20

Self-saturating liquefied natural gas delivery system utilizing hydraulic pressure

#93
20130220278
2013-08-29

Fuel gas supply method and supply unit for gas engine

#94
20130104997
2013-05-02

Method and system for controlling fluid flow from a storage tank through a supply line to an end user

#95
20130098333
2013-04-25

Dual fuel injector with hydraulic lock seal and liquid leak purge strategy

#96
20120152215
2012-06-21

DUAL FUEL SOURCE TRAILER TRACTOR

#97
20100326374
2010-12-30

Internal combustion engines

#98
20100319636
2010-12-23

Internal combustion engines

#99
20100307431
2010-12-09

Internal combustion engines

#100
18679767
2025-07-15

Extended-life prechamber sparkplug for engine system and engine system operating method

#101
17986711
2025-01-14

System and method of hydrogen fuel injection

#102
17829670
2023-05-02

Gaseous fuel engine configuration and method using always-open fuel admission ports

#103
17751718
2022-12-20

Isolation valve for spark-ignition piston engines