Patents-Review.com
ClassID:

138951 ⎘

F02B75/28 - CPC Classification

Classification description:

Other engines Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders

Sub-classes:
Recent Application in this class:
#1
20250320005
2025-10-16

ENGINE AND FLYING APPARATUS

 #2
20250305446
2025-10-02

OPPOSED-PISTON INTERNAL COMBUSTION ENGINE

 #3
20240392734
2024-11-28

Parent bore cylinder block of an opposed-piston engine

 #4
20240218826
2024-07-04

HYDROGEN OPPOSED-PISTON ENGINE

 #5
20240151177
2024-05-09

OPPOSED-PISTON ENGINE

 #6
20240146152
2024-05-02

Linear electric generator

 #7
20230399994
2023-12-14

System and method for deburred port holes in a two-stroke engine

 #8
20230392544
2023-12-07

Opposed-piston engine

 #9
20230265786
2023-08-24

Hydrogen opposed-piston engine

 #10
20230203984
2023-06-29

Hybrid drive system with an opposed-piston, internal combustion engine

 #11
20230058375
2023-02-23

Linear combustion engines with valve in piston

 #12
20230019112
2023-01-19

Engine

 #13
20230003127
2023-01-05

RECPROCATING IC ENGINES WITHIN THERMALLY INSULATING ENCLOSURES

 #14
20220345004
2022-10-27

Linear electric device

 #15
20220243650
2022-08-04

ENGINE WITH SLIDER-CRANK MECHANISM

 #16
20220170370
2022-06-02

Cam machine with adjustment mechanism

 #17
20220154652
2022-05-19

Internal combustion engine system

 #18
20220025767
2022-01-27

Opposed piston engine

 #19
20210381377
2021-12-09

Engine crank and connecting rod mechanism

 #20
20210363938
2021-11-25

Crankcase ventilation system with dead space alignment sleeves

 #21
20210285360
2021-09-16

Homogeneous charge compression ignition (HCCI-type) combustion system for an engine and powertrain using wet-alcohol as a fuel and including hot assist ignition

 #22
20210277819
2021-09-09

IGNITION PISTON

 #23
20210239071
2021-08-05

PARENT BORE CYLINDER BLOCK OF AN OPPOSED-PISTON ENGINE

 #24
20210239070
2021-08-05

PARENT BORE CYLINDER BLOCK OF AN OPPOSED-PISTON ENGINE

 #25
20210239039
2021-08-05

Optimal efficiency internal combustion engine

 #26
20210199009
2021-07-01

Engine crank and connecting rod mechanism

 #27
20210156349
2021-05-27

Fuel injector mounting assembly for an opposed-piston engine

 #28
20210156298
2021-05-27

Control of an opposed-piston engine with a mass airflow sensor located after a charge air cooler

 #29
20210123389
2021-04-29

DUAL-CRANKSHAFT, OPPOSED-PISTON ENGINE WITH MECHANICALLY UNCOUPLED CRANKSHAFTS

 #30
20210115873
2021-04-22

Cylinder cooling in opposed-piston engines

 #31
20210091631
2021-03-25

Linear electric device having reciprocating movement linked to rotational movement of a shaped cam

 #32
20210061255
2021-03-04

Hybrid drive system with an opposed-piston, internal combustion engine

 #33
20210054781
2021-02-25

Power generation device and automobile

 #34
20210046628
2021-02-18

Piston ring installation tool

 #35
20210016880
2021-01-21

ENGINE-MOUNTED AUTONOMOUS FLYING DEVICE

 #36
20200408146
2020-12-31

Operation system for piston-type expander, and operation method for piston-type expander

 #37
20200355115
2020-11-12

INTERNAL COMBUSTION ENGINE WITH OPPOSED PISTONS AND A CENTRAL DRIVE SHAFT

 #38
20200318536
2020-10-08

Internal combustion engine

 #39
20200232385
2020-07-23

System and method for controlling opposed piston engine operation for rotation direction

 #40
20200208522
2020-07-02

Engine crank and connecting rod mechanism

 #41
20200173334
2020-06-04

Exhaust manifold constructions including thermal barrier coatings for opposed-piston engines

 #42
20200158240
2020-05-21

MOTOR CAPABLE OF MANY DIFFERENT APPLICATIONS

 #43
20200149493
2020-05-14

Parent bore cylinder block of an opposed-piston engine

 #44
20200141378
2020-05-07

Ignition source adapted for positioning within a combustion chamber

 #45
20200141312
2020-05-07

Opposed piston engine

 #46
20200132110
2020-04-30

Hybrid opposed-piston internal combustion engine

 #47
20200024945
2020-01-23

OPPOSED PISTON COMBUSTION ENGINE USING CRANK AND CAM

 #48
20200003058
2020-01-02

Opposed piston engine with offset inlet and exhaust crankshafts

 #49
20190390551
2019-12-26

Engine crank and connecting rod mechanism

 #50
20190360337
2019-11-28

Methods and related systems for generating pressurized air within an opposed piston engine

 #51
20190338702
2019-11-07

GUIDE CAM ASSEMBLY FOR DIFFERENTIAL AND VARIABLE STROKE CYCLE ENGINES

 #52
20190338679
2019-11-07

Opposed piston type engine

 #53
20190203639
2019-07-04

Driving apparatus with swinging linear motion mechanism

 #54
20190195124
2019-06-27

PISTON ARRANGEMENT AND INTERNAL COMBUSTION ENGINE

 #55
20190186899
2019-06-20

Systems and methods for measurement of piston-to-piston clearances in multi-cylinder opposed piston engines

 #56
20190170063
2019-06-06

Opposed-piston compact engine with crankshafts rotating on a different plant to those of the cylinder axes

 #57
20190107066
2019-04-11

Method for operating an engine

 #58
20190100295
2019-04-04

INTERNAL COMBUSTION ENGINE

 #59
20190093597
2019-03-28

Multi-layered piston crown for opposed-piston engines

 #60
20190093552
2019-03-28

Bilateral engine control system

 #61
20190085696
2019-03-21

Free-piston device and method for operating a free-piston device

 #62
20190078523
2019-03-14

Diesel engine particulate filter regeneration system and methods

 #63
20190017432
2019-01-17

Method for operating an axial piston motor, and axial piston motor

 #64
20180216567
2018-08-02

Opposed piston engine cylinder with carbon scraper

 #65
20180216523
2018-08-02

Bilateral engine control system

 #66
20180202487
2018-07-19

Minimizing oil leakage from rocking journal bearings

 #67
20180202346
2018-07-19

PISTON BEARING ASSEMBLY FOR AN OPPOSED-PISTON ENGINE

 #68
20180179644
2018-06-28

Pistons with thermal barrier coatings

 #69
20180128203
2018-05-10

PISTONS WITH THERMAL BARRIER COATINGS

 #70
20180128202
2018-05-10

Pistons with thermal barrier coatings

 #71
20180106210
2018-04-19

Oil cooled internal combustion engine cylinder liner and method of use

 #72
20180058368
2018-03-01

Cylinder liner for an opposed-piston engine

 #73
20180045135
2018-02-15

Port edge shape with continuous curvature for improved ring-port interaction and flow area

 #74
20180038228
2018-02-08

Internal combustion engine

 #75
20180030889
2018-02-01

Drive device provided with XY-separating crank mechanism

 #76
20170370282
2017-12-28

Linear piston engine for operating external linear load

 #77
20170370273
2017-12-28

Piston cooling for opposed-piston engine

 #78
20170356542
2017-12-14

Gear backlash control for an opposed-piston engine

 #79
20170335752
2017-11-23

Uniflow engine with fluid flow arrangement

 #80
20170321591
2017-11-09

Open exhaust chamber constructions for opposed-piston engines

 #81
20170306832
2017-10-26

Piston cooling for opposed-piston engines

 #82
20170254288
2017-09-07

Barrier ring and assembly for a cylinder of an opposed-piston engine

 #83
20170254261
2017-09-07

Opposed piston engine with pistons having conical recesses therein

 #84
20170248099
2017-08-31

Multi-layered piston crown for opposed-piston engines

 #85
20170248088
2017-08-31

Method for controlling an air boosting apparatus in a two-stroke, opposed piston engine, and a two-stroke, opposed piston engine with an air boosting apparatus

 #86
20170241332
2017-08-24

Opposed piston engine with variable compression ratio

 #87
20170218799
2017-08-03

Two stroke, opposed piston engine with compression release brake arrangement and method

 #88
20170217553
2017-08-03

Internal combustion engine

 #89
20170167531
2017-06-15

Minimizing oil leakage from rocking journal bearings

 #90
20170122199
2017-05-04

Two-stroke opposed piston internal combustion engine

 #91
20170122185
2017-05-04

Compact ported cylinder construction for an opposed-piston engine

 #92
20170074315
2017-03-16

Minimizing oil leakage from rocking journal bearings of two-stroke cycle engines

 #93
20170018995
2017-01-19

Poly-generation system

 #94
20170016387
2017-01-19

Internal Combustion Engine with Integrated Air Compressor

 #95
20170009884
2017-01-12

Multi-stage combustion hot-gas/steam pressure-differential parallel-cylinder opposed-piston engine for natural gas, hydrogen and other fuels with integrated electric generator

 #96
20170009617
2017-01-12

SLEEVE VALVE ENGINE

 #97
20160369740
2016-12-22

Piston cooling configurations utilizing lubricating oil from a bearing reservoir in an opposed-piston engine

 #98
20160369686
2016-12-22

Low reactivity, compression-ignition, opposed-piston engine

 #99
20160356241
2016-12-08

Cylinder for opposed-piston engines

 #100
20160356216
2016-12-08

Load transfer point offset of rocking journal wristpins in uniflow-scavenged, opposed-piston engines with phased crankshafts

 #101
20160341104
2016-11-24

Low reactivity, compression-ignition, opposed-piston engine

 #102
20160326993
2016-11-10

EGR constructions for opposed-piston engines

 #103
20160326953
2016-11-10

Potential energy storage engine

 #104
20160305317
2016-10-20

Engine

 #105
20160290277
2016-10-06

Cylinder liner for an opposed-piston engine

 #106
20160281599
2016-09-29

Dual piston engine compression device

 #107
20160252067
2016-09-01

Opposed piston three nozzle piston bowl design

 #108
20160252065
2016-09-01

Opposed piston three nozzle combustion chamber design

 #109
20160252061
2016-09-01

Leaschauer engine

 #110
20160252044
2016-09-01

Engine block construction for opposed piston engine

 #111
20160252013
2016-09-01

Piston Crown and Corresponding Port Geometry

 #112
20160252012
2016-09-01

Internal combustion engines

 #113
20160237890
2016-08-18

Internal combustion engine

 #114
20160237886
2016-08-18

INTERNAL COMBUSTION ENGINES

 #115
20160201554
2016-07-14

Piston arrangement and internal combustion engine

 #116
20160201544
2016-07-14

Piston cooling for opposed-piston engines

 #117
20160195028
2016-07-07

Dual-fuel constructions for opposed-piston engines with shaped combustion chambers

 #118
20160138499
2016-05-19

EGR for a two-stroke cycle engine without a supercharger

 #119
20160076468
2016-03-17

Air handling control for opposed-piston engines with uniflow scavenging

 #120
20160076441
2016-03-17

Compact non-vibrating endothermic engine

 #121
20160069293
2016-03-10

Opposed piston two-stroke engine with thermal barrier

 #122
20160053674
2016-02-25

Air handling control for opposed-piston engines with uniflow scavenging

 #123
20160033030
2016-02-04

Split gear assembly with one-way roller clutch for controlling backlash in opposed-piston engines

 #124
20160032823
2016-02-04

Cylinder arrangement for opposed piston engine

 #125
20160032822
2016-02-04

CYLINDER ARRANGEMENT FOR OPPOSED PISTON TWO-STROKE ENGINE

 #126
20150298250
2015-10-22

Method for producing a hollow body which is pressure-tight to a predetermined medium

 #127
20150285127
2015-10-08

Fuel injection with swirl spray patterns in opposed-piston engines

 #128
20150275744
2015-10-01

Otto and diesel cycles employing spinning gas

 #129
20150247453
2015-09-03

Hydraulic motor capable of many different applications able to use low pressure or high pressure fluids to operate

 #130
20150167548
2015-06-18

Internal combustion engines

 #131
20150148193
2015-05-28

Vertical movement vibrating exercise and wellness platform

 #132
20150128920
2015-05-14

Lubricating configuration for maintaining wristpin oil pressure in a two-stroke cycle, opposed-piston engine

 #133
20150122227
2015-05-07

Combustion chamber construction with dual mixing regions for opposed-piston engines

 #134
20150059681
2015-03-05

Polygon oscillating piston engine

 #135
20150020627
2015-01-22

Gear noise reduction in opposed-piston engines

 #136
20150013649
2015-01-15

Combustion chamber constructions for opposed-piston engines

 #137
20140373816
2014-12-25

System and method for air handling control in opposed-piston engines with uniflow scavenging

 #138
20140373815
2014-12-25

Trapped burned gas fraction control for opposed-piston engines with uniflow scavenging

 #139
20140373814
2014-12-25

Air handling control for opposed-piston engines with uniflow scavenging

 #140
20140331656
2014-11-13

Air Handling Constructions With Turbo-Compounding For Opposed-Piston Engines

 #141
20140326201
2014-11-06

Action reaction combustion engine

 #142
20140311431
2014-10-23

Internal combustion engine

 #143
20140299109
2014-10-09

Dual crankshaft, opposed-piston engines with variable crank phasing

 #144
20140283791
2014-09-25

Free-piston engine

 #145
20140261297
2014-09-18

Internal combustion engines

 #146
20140238360
2014-08-28

Rocking journal bearings for two-stroke cycle engines

 #147
20140196693
2014-07-17

INTERNAL COMBUSTION ENGINES

 #148
20140182558
2014-07-03

Leaschauer engine

 #149
20140182526
2014-07-03

Axial piston internal combustion engine using an Atkinson cycle

 #150
20140165967
2014-06-19

Internal combustion engines

 #151
20140130780
2014-05-15

Internal combustion engine

 #152
20140102418
2014-04-17

OPPOSED PISTON ENGINE WITH NON-COLLINEAR AXES OF TRANSLATION

 #153
20140096740
2014-04-10

Modified crankshaft piston interface for optimized cylinder pressure and torque output

 #154
20140083396
2014-03-27

Combustion chamber constructions for opposed-piston engines

 #155
20140026563
2014-01-30

EGR constructions for opposed-piston engines

 #156
20140000567
2014-01-02

Variable compression ratio diesel engine

 #157
20130276762
2013-10-24

Symmetric opposed-piston, opposed-cylinder engine

 #158
20130206113
2013-08-15

Method and means for controlling combustion

 #159
20130133627
2013-05-30

Reciprocating piston engine

 #160
20130112175
2013-05-09

Constructions for piston thermal management

 #161
20130098328
2013-04-25

Balancing an opposed-piston, opposed-cylinder engine

 #162
20130037010
2013-02-14

Uniflow portless two-stroke engine

 #163
20130014713
2013-01-17

Differential-stroke internal combustion engine

 #164
20120285422
2012-11-15

Dual crankshaft, opposed-piston engine constructions

 #165
20120266851
2012-10-25

Intake system for a two-stroke internal combustion engine

 #166
20120207415
2012-08-16

Pullrod connection to a journal

 #167
20120204841
2012-08-16

Opposed-piston, opposed-cylinder engine with collinear cylinders

 #168
20120160189
2012-06-28

Electromagnetic engine

 #169
20120152185
2012-06-21

Two-cycle, opposed-piston internal combustion engine

 #170
20120125298
2012-05-24

Two stroke opposed-piston engines with compression release for engine braking

 #171
20120085309
2012-04-12

Sealing of sleeve valves

 #172
20120080007
2012-04-05

Fuel injector support constructions for direct injection opposed-piston engines

 #173
20120073541
2012-03-29

Fuel injection spray patterns for opposed-piston engines

 #174
20120037130
2012-02-16

Opposed-piston engine having a single crankshaft coupled to the opposed pistons by linkages with pivoted rocker arms

 #175
20120037129
2012-02-16

OPPOSED PISTON ENGINE

 #176
20110289916
2011-12-01

EGR constructions for opposed-piston engines

 #177
20110287906
2011-11-24

Variable resistance pulley for body-weight rotation exercise

 #178
20110271932
2011-11-10

Combustion chamber constructions for opposed-piston engines

 #179
20110259304
2011-10-27

Fuel injection system

 #180
20110221208
2011-09-15

Opposed piston electromagnetic engine

 #181
20110186017
2011-08-04

Single-crankshaft, opposed-piston engine constructions

 #182
20110186005
2011-08-04

Rolling thrust bearing constructions

 #183
20110100328
2011-05-05

ELECTROLYSIS APPARATUS AND RELATED DEVICES AND METHODS

 #184
20110094223
2011-04-28

Opposed piston engine

 #185
20110041799
2011-02-24

High swirl engine

 #186
20110036330
2011-02-17

Internal combustion engine

 #187
20110011375
2011-01-20

Super charged engine

 #188
20100319661
2010-12-23

Cylinder-Mounted oil wiper for an opposed piston engine

 #189
20100229836
2010-09-16

Guided bridge for a piston in an internal combustion engine

 #190
20100192923
2010-08-05

Internal combustion engines

 #191
20100186723
2010-07-29

Two-cycle, opposed-piston internal combustion engine

 #192
20100180868
2010-07-22

Mechanism for internal combustion piston engines

 #193
20100154749
2010-06-24

Three-stroke internal combustion engine, cycle and components

 #194
20100127507
2010-05-27

Electromagnetic engine

 #195
20100071671
2010-03-25

Opposed piston, compression ignition engine with single-side mounted crankshafts and crossheads

 #196
20100043735
2010-02-25

Supercharged internal combustion engine including a pressurized fluid outlet

 #197
20100012055
2010-01-21

Cylinder and piston assemblies for opposed piston engines

 #198
20090320799
2009-12-31

Drive system with a rotary energy-transmission element

 #199
20090314252
2009-12-24

COMBUSTION ENGINE WITH SELF-IGNITION OF AIR-AND-FUEL MIXTURE

 #200
20090293820
2009-12-03

Two-cycle, opposed-piston internal combustion engine

 #201
20090266339
2009-10-29

Internal combustion engine

 #202
20090266329
2009-10-29

Internal combustion engine

 #203
20090205331
2009-08-20

Piston based double compounding engine

 #204
20090173299
2009-07-09

Valve system for opposed piston engines

 #205
20090159022
2009-06-25

Differential Speed Reciprocating Piston Internal Combustion Engine

 #206
20090139476
2009-06-04

Internal combustion engine

 #207
20090091138
2009-04-09

Electromagnetic engine

 #208
20090090334
2009-04-09

Opposed piston electromagnetic engine

 #209
20090020958
2009-01-22

METHODS AND APPARATUS FOR OPERATING AN INTERNAL COMBUSTION ENGINE

 #210
20080314688
2008-12-25

Internal combustion engine with provision for lubricating pistons

 #211
20080271715
2008-11-06

Internal combustion barrel engine

 #212
20080190398
2008-08-14

ENGINE WITH PISTONS ALIGNED PARALLEL TO THE DRIVE SHAFT

 #213
20080168957
2008-07-17

Motorcycle comprising a compact internal combustion engine

 #214
20080163848
2008-07-10

Opposed piston engine with piston compliance

 #215
20080141956
2008-06-19

Double piston cycle engine

 #216
20080127947
2008-06-05

OPOC engine

 #217
20080105222
2008-05-08

Barrel-type internal combustion engine

 #218
20080047530
2008-02-28

Internal combustion engine

 #219
20080035133
2008-02-14

Single connecting rod engine

 #220
20070245892
2007-10-25

Two-cycle, opposed-piston internal combustion engine

 #221
20070181085
2007-08-09

Sliding joint for variable compression ratio device

 #222
20070044738
2007-03-01

Opposed double piston internal combustion engine

 #223
20070039572
2007-02-22

Two-stroke, opposed-piston internal combustion engine

 #224
20070034175
2007-02-15

Slide body internal combustion engine

 #225
20060243228
2006-11-02

Double piston cycle engine

 #226
20060157003
2006-07-20

Opposed piston engine

 #227
20060124084
2006-06-15

Internal combustion engine

 #228
20060070590
2006-04-06

Rapid response power conversion device

 #229
20060048729
2006-03-09

Supercharged two-stroke engine with upper piston extensions

 #230
20060021589
2006-02-02

Valve system for a rapid response power conversion device

 #231
20050274332
2005-12-15

Two-cycle, opposed-piston internal combustion engine

 #232
20050205025
2005-09-22

Apparatus with piston having upper piston extensions

 #233
18789366
2025-02-11

Cam following system for pursing piston engine

 #234
18590856
2025-01-14

Epicyclic rotary engine

 #235
17693094
2023-02-07

Engine and ignition assembly with two pistons

 #236
17586888
2023-04-11

Internal restraining path in a rotor

 #237
17544434
2022-05-31

Two-cycle motor

 #238
17500682
2022-10-18

Torque control of piston engine with crankpin offset

 #239
16537304
2020-12-15

Spherical linear two stroke engine

 #240
16520146
2020-11-17

Main bearings of opposed-piston engines with two crankshafts

 #241
16010440
2019-08-06

Engine crank and connecting rod mechanism

 #242
15952830
2020-03-17

Cam-driven radial rotary engine incorporating an HCCI apparatus

 #243
15696550
2018-11-27

Diesel engine cold starting system and methods

 #244
15370673
2018-03-27

Maintaining EGR flow in a uniflow-scavenged, two-stroke cycle, opposed-piston engine

 #245
14255756
2015-09-01

Liner component for a cylinder of an opposed-piston engine

 #246
13633097
2017-07-18

Opposed piston engine and elements thereof