ClassID:

138892

F02B75/021 - CPC Classification

Classification description:

Other engines; Engines characterised by their cycles, e.g. six-stroke having six or more strokes per cycle

Recent Application in this class:
#1
20250264077
2025-08-21

FUEL REFORMING SYSTEM FOR VEHICLE

#2
20250264076
2025-08-21

FUEL REFORMING SYSTEM

#3
20220082048
2022-03-17

Camshaft for internal-combustion engine

#4
20210215093
2021-07-15

System and method for controlling operation of a two-stroke engine having a turbocharger

#5
20210164389
2021-06-03

Method for operating an internal combustion engine

#6
20210054780
2021-02-25

Internal-combustion engine and drive system

#7
20200123901
2020-04-23

Six-stroke rotary-vane internal combustion engine with hermetically sealed working space

#8
20190211678
2019-07-11

Tangential force internal combustion engine

#9
20190145261
2019-05-16

Six-stroke rotary-vane internal combustion engine

#10
20190048812
2019-02-14

Method for operating an internal combustion piston engine

#11
20180038275
2018-02-08

Six-stroke and eight-stroke internal combustion engines

#12
20170298842
2017-10-19

Air-intake shutoff valves for engines

#13
20170184061
2017-06-29

Efficient thermal energy power engine and working method thereof

#14
20170167436
2017-06-15

Efficient thermal energy power device and work-doing method therefor

#15
20170167365
2017-06-15

High pressure energy storage thermal energy power machine and work-doing method therefor

#16
20170159620
2017-06-08

Thermal energy power device and work-doing method therefor

#17
20160369750
2016-12-22

High Thermal Efficiency Six Stroke Internal Combustion Engine with Heat Recovery and Water Injection

#18
20160341117
2016-11-24

Internal combustion engine and a method for controlling such an internal combustion engine

#19
20160245235
2016-08-25

High thermal efficiency six stroke internal combustion engine with heat recovery

#20
20160222880
2016-08-04

System for a mechanical conversion of an internal combustion engine of 4 strokes into 8 strokes

#21
20160169125
2016-06-16

Six-stroke engine and method of operating six-stroke engine

#22
20160032822
2016-02-04

CYLINDER ARRANGEMENT FOR OPPOSED PISTON TWO-STROKE ENGINE

#23
20160032821
2016-02-04

Six Stroke Internal-Combustion Engine

#24
20150330296
2015-11-19

System for a mechanical conversion of an internal combustion engine of 4 strokes into 8 strokes

#25
20150136083
2015-05-21

Inverted V-8 I-C engine and method of operating same in a vehicle

#26
20150040847
2015-02-12

Six-stroke cycle engine having scavenging stroke

#27
20140366819
2014-12-18

Six-stroke cycle engine having scavenging stroke

#28
20140326202
2014-11-06

Six Stroke Internal Combustion Engine and a Method of Operation

#29
20140224195
2014-08-14

Six-stroke engine

#30
20140209052
2014-07-31

Piston arrangement and engine

#31
20140158087
2014-06-12

After-treatment system and method for six-stroke combustion cycle

#32
20140158085
2014-06-12

Six-Stroke Combustion Cycle Engine and Process

#33
20140158084
2014-06-12

Six-stroke engine system with blowdown exhaust recirculation

#34
20140158072
2014-06-12

Six-stroke internal combustion engine valve activation system and method for operating such engine

#35
20140158071
2014-06-12

Six-stroke combustion cycle engine and process

#36
20140158070
2014-06-12

Six-stroke engine power density matching system and method

#37
20140158069
2014-06-12

Six-stroke engine system with blowdown turbocharger

#38
20140158068
2014-06-12

Six-stroke engine system with blowdown exhaust system

#39
20140060482
2014-03-06

Six Stroke 'Blackburn Cycle' Engine

#40
20130333553
2013-12-19

3-stroke/6-stroke rocket jet engine

#41
20120166066
2012-06-28

Engine control system implementing lean burn 6-stroke cycle

#42
20120160223
2012-06-28

Internal combustion engine with separate combustion chamber and a method to achieve modified and controlled autoignition in said chamber

#43
20110265456
2011-11-03

Diesel Engine and Method for Flexible Passive Regeneration of Exhaust After-Treatment Devices

#44
20110221208
2011-09-15

Opposed piston electromagnetic engine

#45
20110023817
2011-02-03

Variable-coordination-timing type self-cooling engine with variable-profile-camshaft

#46
20110017170
2011-01-27

8-stroke internal combustion engine

#47
20100313831
2010-12-16

Highly efficient 6-stroke engine cycle with water injection

#48
20100282225
2010-11-11

Air supply for components of a split-cycle engine

#49
20100278628
2010-11-04

Turbine with variable number of nozzles

#50
20100269775
2010-10-28

SIX-STROKE INTERNAL COMBUSTION ENGINE, METHOD OF OPERATION OF SUCH AN ENGINE AND VEHICLE EQUIPPED WITH SUCH AN ENGINE

#51
20100258067
2010-10-14

Overhead-exhaust type cross-cycle internal combustion engine

#52
20100095913
2010-04-22

Six stroke internal combustion engine and method of operation

#53
20100083921
2010-04-08

Catalyst control for six-cycle engine

#54
20100077988
2010-04-01

HYDROGEN-ONLY 6-STROKE ENGINE

#55
20100064994
2010-03-18

Internal-combustion engine of the type with at least one cylinder working in degraded mode

#56
20100064992
2010-03-18

Eight-stroke engine cycle

#57
20100050963
2010-03-04

6-cycle engine with regenerator

#58
20100018480
2010-01-28

Two-stage-coordination type eight-stroke engine

#59
20100018479
2010-01-28

Eight-stroke engine with coordination pressure management system

#60
20100012082
2010-01-21

Swirl-injection type eight-stroke engine

#61
20100012058
2010-01-21

Variable coordination volume type eight-stroke engine

#62
20090277404
2009-11-12

Active-threshold-control type self-cooling engine

#63
20090277403
2009-11-12

Variable-coordination-timing type self-cooling engine

#64
20090266347
2009-10-29

Split-cycle air hybrid engine

#65
20090235881
2009-09-24

Six-cycle internal combustion engine

#66
20090090334
2009-04-09

Opposed piston electromagnetic engine

#67
20080105225
2008-05-08

Split-cycle air hybrid engine

#68
20070295290
2007-12-27

Cao cycles of internal combustion engine with increased expansion ratio, constant-volume combustion, variable compression ratio, and cold start mechanism

#69
20070251472
2007-11-01

Engine and method for operating an engine

#70
20070163531
2007-07-19

Method for stopping and starting an internal combustion engine having a variable event valvetrain

#71
20070157894
2007-07-12

Split-cycle air hybrid engine

#72
20070119407
2007-05-31

8-stroke cycle rotary engine

#73
20070044778
2007-03-01

Engine which operates repeatedly with a multi-stage combustion process

#74
20060124079
2006-06-15

System and method for recovering wasted energy from an internal combustion engine

#75
20050172623
2005-08-11

Rakh cycle engine

#76
20050109313
2005-05-26

Throttle and inlet valves for 8 stroke and 4 stroke engines

#77
18654850
2025-08-05

Systems and methods for extra-stroke engine cycle operation

#78
17303212
2022-10-25

Methods and systems for reducing engine exhaust emissions