F02B25/14 - CPC Classification Index

ClassID:

138656 ⎘

F02B25/14 - CPC Classification

Classification description:

Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke

Sub-classes:

F02B25/145 » {with intake and exhaust valves exclusively in the cylinder head} 81
F02B25/16 » the charge flowing upward essentially along cylinder wall opposite the inlet ports 21
F02B25/18 » the charge flowing upward essentially along cylinder wall adjacent the inlet ports, e.g. by means of deflection rib on piston 23

Recent Application in this class:

20260092554

2026-04-02

CRANKCASE SCAVENGED TWO-STROKE ENGINE AND HANDHELD POWER TOOL

20240426266

2024-12-26

TWO-STROKE ENGINE WITH CRANKCASE FUEL INJECTOR

20230193811

2023-06-22

Schnuerle scavenging two-stroke engine

20230036494

2023-02-02

Two-cycle engine

20230017963

2023-01-19

Two-stroke engine

20200095953

2020-03-26

Stratified scavenging engine and portable work machine

20200080471

2020-03-12

METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE, DEVICE, AND INTERNAL COMBUSTION ENGINE

20200003161

2020-01-02

CARBURETED ENGINE HAVING AN ADJUSTABLE FUEL TO AIR RATIO

20190323419

2019-10-24

Internal combustion engines

#10

20190170054

2019-06-06

Two-stroke internal combustion engine

#11

20190101050

2019-04-04

Exhaust-tuning port and timing and combustion chamber shape

#12

20180320636

2018-11-08

CARBURETED ENGINE HAVING AN ADJUSTABLE FUEL TO AIR RATIO

#13

20180187590

2018-07-05

Internal combustion engine with shrouded injection valve and precombustion chamber system

#14

20180023528

2018-01-25

Injection system for two-stroke engines

#15

20170254293

2017-09-07

Two-cycle engine and engine work machine

#16

20170130642

2017-05-11

Rotary carburetor for two-stroke internal combustion engine

#17

20170107937

2017-04-20

Two-stroke engine

#18

20160377035

2016-12-29

Air cleaner for stratified scavenging two-stroke internal combustion engine

#19

20160230704

2016-08-11

Carburetor and method for operating an internal combustion engine having said carburetor

#20

20160195008

2016-07-07

Two-stroke opposed piston Rotary internal combustion engine with no reactive torque

#21

20160169087

2016-06-16

Air leading type two-stroke engine and intake system for same, and carburetor

#22

20160097344

2016-04-07

Air leading-type stratified scavenging two-stroke internal-combustion engine

#23

20160097343

2016-04-07

Air leading-type stratified scavenging two-stroke internal-combustion engine

#24

20160084201

2016-03-24

Carbureted engine having an adjustable fuel to air ratio

#25

20160069296

2016-03-10

Two-stroke engine

#26

20150377117

2015-12-31

Stratified scavenging two-stroke engine

#27

20150247444

2015-09-03

Fuel-stratified combustion chamber in a direct-injected internal combustion engine

#28

20140331965

2014-11-13

Positive displacement radical injection system

#29

20140318517

2014-10-30

Stratified scavenging two-stroke engine

#30

20140318515

2014-10-30

Stratified scavenging two-stroke engine

#31

20140311136

2014-10-23

Internal combustion and waste heat steam engine having a heat recovery steam generator exhaust manifold

#32

20140305099

2014-10-16

Systems, methods, and apparatuses related to the use of gas clathrates

#33

20140283764

2014-09-25

Inferred engine local temperature estimator

#34

20140261261

2014-09-18

Porting system for a turbo-charged loop scavenged two-stroked engine

#35

20140216425

2014-08-07

Reduction of ring clipping in two-stroke cycle engines

#36

20140209057

2014-07-31

Method for modifying combustion chamber in a reciprocating piston internal combustion engine and resulting engine

#37

20140182571

2014-07-03

Stratified scavenging two-stroke engine

#38

20140060480

2014-03-06

Internal combustion engine with shrouded injection valve and precombustion chamber system

#39

20140060478

2014-03-06

Internal combustion engine with shrouded injection valve and precombustion chamber system

#40

20140026846

2014-01-30

Spark ignited radical injection system

#41

20130327306

2013-12-12

Rotary synchronous charge trapping

#42

20130291840

2013-11-07

Stratified scavenging two-stroke engine

#43

20130220281

2013-08-29

METHOD, ENGINE CYLINDER, AND ENGINE WITH OPPOSED SEMI-LOOP SCAVENGING

#44

20130092137

2013-04-18

Fixing device for attaching a cylinder block to an engine block of a two-stroke engine

#45

20130061835

2013-03-14

Two-stroke engine and a method for the operation thereof

#46

20130008681

2013-01-10

Two-cycle engine and engine tool comprising the same

#47

20120325191

2012-12-27

Scavenging passage structure for two-stroke engine

#48

20120304973

2012-12-06

Two-stroke engine

#49

20120304972

2012-12-06

Two-stroke engine with low consumption and low emissions

#50

20120283932

2012-11-08

TWO-STROKE INTERNAL COMBUSTION ENGINE WITH VARIABLE COMPRESSION RATIO AND AN EXHAUST PORT SHUTTER AND A METHOD OF OPERATING SUCH AN ENGINE

#51

20120234293

2012-09-20

Internal combustion engine and method of producing the same

#52

20120152218

2012-06-21

Two-stroke engine

#53

20120152216

2012-06-21

Two-stroke engine

#54

20120132173

2012-05-31

FUEL CONDITIONING METHOD AND COUPLED COMBUSTION PROCESS FOR INTERNAL COMBUSTION ENGINES

#55

20120118263

2012-05-17

Positive displacement radical injection system

#56

20120118262

2012-05-17

Spark ignited radical injection system

#57

20120107165

2012-05-03

ENGINE COOLING SYSTEM

#58

20120097142

2012-04-26

Pre-combustion cycle pressurisation system

#59

20120060806

2012-03-15

Two-stroke engine

#60

20120060788

2012-03-15

Cylinder for a combustion engine and a method for making the same

#61

20120060381

2012-03-15

Hand-held power tool

#62

20120024276

2012-02-02

Loop scavenged two-stroke internal combustion engine

#63

20120024275

2012-02-02

Two-stroke internal combustion engine

#64

20110180054

2011-07-28

Two-stroke internal combustion engine and its scavenging method

#65

20110146643

2011-06-23

Two-Stroke Engine

#66

20110146608

2011-06-23

Glow plug engine

#67

20110079206

2011-04-07

Two-stroke engine having a ported piston to facilitate airflow therethrough

#68

20110061637

2011-03-17

Fuel System

#69

20110061636

2011-03-17

Two-stroke engine

#70

20110017183

2011-01-27

Two-stroke internal combustion engine

#71

20110017182

2011-01-27

TWO-STROKE INTERNAL COMBUSTION ENGINE

#72

20100319655

2010-12-23

Internal combustion engine with shrouded injection valve and pre-combustion chamber system

#73

20100288251

2010-11-18

Scavenging cover and two-cycle engine

#74

20100251994

2010-10-07

Remote control model engine assembly

#75

20100236082

2010-09-23

Two-stroke engine and motorized implement equipped with the two-stroke engine

#76

20100192928

2010-08-05

Two-stroke cycle combustion engine of air scavenging type

#77

20100147252

2010-06-17

Piston, cylinder and piston assembly and piston ring for a piston

#78

20100101523

2010-04-29

Method and device for priming a fuel metering device

#79

20100059030

2010-03-11

Stratified scavenging two-cycle engine

#80

20090308369

2009-12-17

Laminated counterweight for timing control

#81

20090283079

2009-11-19

Air cleaner for stratified-scavenging two-stroke internal combustion engine

#82

20090188461

2009-07-30

Internal combustion engine having an elastic connector and method of producing same

#83

20090151686

2009-06-18

SUPERCHARGED INTERNAL COMBUSTION ENGINE

#84

20090145399

2009-06-11

Method for controlling a fuel valve and/or an air valve for an internal combustion engine

#85

20090139485

2009-06-04

Direct injection two-stroke engine

#86

20090138174

2009-05-28

Two-cycle engine

#87

20090126672

2009-05-21

Handheld work apparatus

#88

20090114172

2009-05-07

Internal combustion engine

#89

20090056687

2009-03-05

Two-stroke, homogeneous charge, spark-ignition engine

#90

20090050124

2009-02-26

Two-cycle engine

#91

20090013982

2009-01-15

Two-cycle engine cylinder and method for manufacturing the same

#92

20090013981

2009-01-15

Cylinder block for a two-cycle combustion engine

#93

20090013980

2009-01-15

TWO CYCLE ENGINE

#94

20090013963

2009-01-15

Carburetor

#95

20090007894

2009-01-08

Two-cycle engine

#96

20080308084

2008-12-18

Cylinder/crankcase group for two-stroke internal combustion engines provided with means for supercharging the engine

#97

20080302345

2008-12-11

Crankcase scavenged two-stroke internal combustion engine having an additional air supply

#98

20080302344

2008-12-11

Internal combustion engine and method of operating the same

#99

20080098992

2008-05-01

Two-stroke internal combustion engine

#100

20080088041

2008-04-17

Carburetor for stratified scavenging two-cycle engine

#101

20080083199

2008-04-10

Manually guided implement

#102

20070257379

2007-11-08

Carburetor

#103

20070186882

2007-08-16

Exhaust control valve for internal combustion engine

#104

20070157914

2007-07-12

Power tool

#105

20070157913

2007-07-12

Power tool

#106

20070125325

2007-06-07

Two-stroke cycle engine

#107

20070119396

2007-05-31

Two-cycle combustion engine

#108

20070101955

2007-05-10

Air intake lengthening structure for model engines

#109

20070089694

2007-04-26

Internal combustion engine with sidewall combustion chamber and method

#110

20070057386

2007-03-15

Carburetor for stratified scavenging two-cycle engine

#111

20070051327

2007-03-08

Two cycle internal combustion engine with direct fuel injection combustion system

#112

20070028868

2007-02-08

Stratified-scavenging two-stroke internal combustion engine

#113

20060278183

2006-12-14

Stratified scavenged two-stroke engine

#114

20060272600

2006-12-07

Two-stroke internal combustion engine

#115

20060272599

2006-12-07

Multi-location fuel injection system

#116

20060266310

2006-11-30

Two-stroke internal combustion engine

#117

20060243230

2006-11-02

Two-stroke engine

#118

20060219203

2006-10-05

Two-stroke engine

#119

20060219195

2006-10-05

Internal combustion engine

#120

20060180106

2006-08-17

Two-stroke engine

#121

20060169225

2006-08-03

Two-stroke internal combustion engine

#122

20060163755

2006-07-27

Carburetor

#123

20060157006

2006-07-20

Method of operating a single cylinder two-stroke engine

#124

20060156800

2006-07-20

Method of operating a single cylinder two-stroke engine

#125

20060130784

2006-06-22

Two-stroke internal combustion engine

#126

20060118070

2006-06-08

Reciprocating piston engines

#127

20060107912

2006-05-25

Two-stroke engine assembly

#128

20060087046

2006-04-27

Carburetor for two-cycle engine

#129

20050193967

2005-09-08

Sas piston channel for optimum air scavenging

#130

20050183678

2005-08-25

Stratified air scavenged two-cycle engine with air flow

#131

20050166872

2005-08-04

Exhaust-outlet control for 2-stroke engine

#132

20050155563

2005-07-21

Two-cycle combustion engine

#133

20050139179

2005-06-30

Stratified scavenged two-stroke engine

#134

20050072388

2005-04-07

Two-stroke engine

#135

20050034689

2005-02-17

Carburetor for two-cycle engine

#136

20050022757

2005-02-03

Two-stroke internal combustion engine

#137

17028875

2021-06-22

Cylinder structure of internal combustion engine