Class information for:
Level 1: FREE PISTON ENGINE//LINEAR ENGINE//FREE PISTON

Basic class information

Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes

The table includes all classes above and classes immediately below the current class.



Cluster id Level Cluster label #P
21 4 THERMODYNAMICS//MECHANICS//ENGINEERING, MECHANICAL 471779
341 3       COMBUSTION AND FLAME//COMBUSTION SCIENCE AND TECHNOLOGY//DIESEL ENGINE 37403
607 2             DIESEL ENGINE//EMISSIONS//EXHAUST EMISSIONS 14396
29469 1                   FREE PISTON ENGINE//LINEAR ENGINE//FREE PISTON 203

Terms with highest relevance score



rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 FREE PISTON ENGINE authKW 3926319 15% 82% 31
2 LINEAR ENGINE authKW 1596910 6% 86% 12
3 FREE PISTON authKW 1502849 11% 44% 22
4 SCAVENGING FLOW authKW 931533 3% 100% 6
5 SIR JOSEPH SWAN ENERGY address 822289 12% 21% 25
6 HYDRAULIC FREE PISTON ENGINE authKW 698647 3% 75% 6
7 TWO STROKE ENGINE authKW 690461 6% 34% 13
8 UNIFLOW SCAVENGING authKW 646896 2% 83% 5
9 LINEAR ELECTRIC MACHINE authKW 621022 2% 100% 4
10 PULSED COMPRESSION REACTOR authKW 621022 2% 100% 4

Web of Science journal categories



chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Energy & Fuels 3356 42% 0% 85
2 Engineering, Mechanical 2289 34% 0% 70
3 Transportation Science & Technology 1458 11% 0% 22
4 Thermodynamics 1161 20% 0% 40
5 Engineering, Chemical 635 24% 0% 49
6 Engineering, Marine 362 2% 0% 5
7 Automation & Control Systems 231 7% 0% 15
8 Mechanics 222 12% 0% 25
9 Engineering, General 102 6% 0% 12
10 Engineering, Aerospace 66 3% 0% 6

Address terms



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 SIR JOSEPH SWAN ENERGY 822289 12% 21% 25
2 CTW THW 349323 1% 75% 3
3 ZHEJIANG ROBOT INTELLIGENT MFG EQUIPMEN 207006 1% 67% 2
4 ECOLE SUPER INGENIEURS INFORMAT AUTOMAT MECA 155256 0% 100% 1
5 RD CONSTRUCT EQUIPMENT 155256 0% 100% 1
6 TWIN CITIES CAMPUS 155256 0% 100% 1
7 VIBRAT ACOUST SIMULAT GRP 155256 0% 100% 1
8 VEHICULAR TRANSMISS 94659 2% 12% 5
9 SYST 3 77627 0% 50% 1
10 WHITLEY 77627 0% 50% 1

Journals



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 APPLIED ENERGY 20265 18% 0% 36
2 INTERNATIONAL JOURNAL OF ENGINE RESEARCH 11034 3% 1% 6
3 ENERGIES 6937 7% 0% 14
4 PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING 6621 5% 0% 10
5 INTERNATIONAL JOURNAL OF MARITIME ENGINEERING 4400 1% 1% 2
6 DYNA 2999 1% 1% 3
7 KSME INTERNATIONAL JOURNAL 1813 2% 0% 4
8 INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY 1779 2% 0% 4
9 AIRCRAFT ENGINEERING AND AEROSPACE TECHNOLOGY 1711 1% 0% 3
10 JSME INTERNATIONAL JOURNAL SERIES II-FLUIDS ENGINEERING HEAT TRANSFER POWER COMBUSTION THERMOPHYSICAL PROPERTIES 1597 1% 1% 2

Author Key Words



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 FREE PISTON ENGINE 3926319 15% 82% 31 Search FREE+PISTON+ENGINE Search FREE+PISTON+ENGINE
2 LINEAR ENGINE 1596910 6% 86% 12 Search LINEAR+ENGINE Search LINEAR+ENGINE
3 FREE PISTON 1502849 11% 44% 22 Search FREE+PISTON Search FREE+PISTON
4 SCAVENGING FLOW 931533 3% 100% 6 Search SCAVENGING+FLOW Search SCAVENGING+FLOW
5 HYDRAULIC FREE PISTON ENGINE 698647 3% 75% 6 Search HYDRAULIC+FREE+PISTON+ENGINE Search HYDRAULIC+FREE+PISTON+ENGINE
6 TWO STROKE ENGINE 690461 6% 34% 13 Search TWO+STROKE+ENGINE Search TWO+STROKE+ENGINE
7 UNIFLOW SCAVENGING 646896 2% 83% 5 Search UNIFLOW+SCAVENGING Search UNIFLOW+SCAVENGING
8 LINEAR ELECTRIC MACHINE 621022 2% 100% 4 Search LINEAR+ELECTRIC+MACHINE Search LINEAR+ELECTRIC+MACHINE
9 PULSED COMPRESSION REACTOR 621022 2% 100% 4 Search PULSED+COMPRESSION+REACTOR Search PULSED+COMPRESSION+REACTOR
10 OPPOSED PISTON TWO STROKE 465767 1% 100% 3 Search OPPOSED+PISTON+TWO+STROKE Search OPPOSED+PISTON+TWO+STROKE

Core articles

The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.

Classes with closest relation at Level 1



rank cluster_id2 link
1 7666 HCCI//HOMOGENEOUS CHARGE COMPRESSION IGNITION//HOMOGENEOUS CHARGE COMPRESSION IGNITION HCCI
2 6642 ENGINE CONTROL//CMT MOTO TERM//TURBOCHARGER
3 10093 MICRO COMBUSTION//MICRO COMBUSTOR//MICROCOMBUSTION
4 19852 TUMBLE//IN CYLINDER FLOW//CYCLE TO CYCLE VARIATIONS
5 33420 DEW POINT CORROSION//ACID DEW POINT//VISCOUS ASH DEPOSITION
6 27327 PARTICLE DAMPER//PARTICLE DAMPING//IMPACT DAMPER
7 14523 SHIP EMISSIONS//COLD IRONING//EMISSION CONTROL AREAS
8 33440 ALL METAL JOINT//CHAIN CLAMPS//CTMMCNRSUMR 5253
9 23528 DIESEL ENGINE PISTON//GARDON GAUGE//THERMAL PRODUCT
10 515 DIESEL ENGINE//BIODIESEL//ENGINE PERFORMANCE

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