World's Best Scientists 2026 revealed!
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Engineering and Technology
Greece
2026

D-Index & Metrics

Engineering and Technology

D-Index
69
Citations
16545
World Ranking
1144
National Ranking
3

Constantine D. Rakopoulos publication distribution in Engineering and Technology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Engineering and Technology in 2026. The highlighted bar marks where Constantine D. Rakopoulos sits on this spectrum.

38–47 publications: 20 scientists 48–57 publications: 35 scientists 58–67 publications: 96 scientists 68–77 publications: 135 scientists 78–87 publications: 190 scientists 88–97 publications: 259 scientists 98–107 publications: 283 scientists 108–117 publications: 369 scientists 118–127 publications: 341 scientists 128–137 publications: 386 scientists 138–147 publications: 372 scientists 148–157 publications: 457 scientists 158–167 publications: 415 scientists 168–177 publications: 407 scientists 178–187 publications: 421 scientists 188–197 publications: 378 scientists 198–207 publications: 403 scientists 208–217 publications: 317 scientists 218–227 publications: 346 scientists 228–237 publications: 321 scientists 238–247 publications: 260 scientists 248–257 publications: 280 scientists 258–267 publications: 240 scientists 268–277 publications: 214 scientists 278–287 publications: 242 scientists 288–297 publications: 203 scientists 298–307 publications: 166 scientists 308–317 publications: 154 scientists 318–327 publications: 175 scientists 328–337 publications: 159 scientists 338–347 publications: 99 scientists 348–357 publications: 131 scientists 358–367 publications: 106 scientists 368–377 publications: 118 scientists 378–387 publications: 97 scientists 388–397 publications: 108 scientists 398–407 publications: 82 scientists 408–417 publications: 71 scientists 418–427 publications: 64 scientists 428–437 publications: 55 scientists 438–447 publications: 54 scientists 448–457 publications: 60 scientists 458–467 publications: 47 scientists 468–477 publications: 40 scientists 478–487 publications: 30 scientists 488–497 publications: 29 scientists 498–507 publications: 38 scientists 508–517 publications: 40 scientists 518–527 publications: 32 scientists 528–537 publications: 23 scientists 538–547 publications: 28 scientists 548–557 publications: 23 scientists 558–567 publications: 19 scientists 568–577 publications: 16 scientists 578–587 publications: 17 scientists 588–597 publications: 18 scientists 598–607 publications: 22 scientists 608–617 publications: 15 scientists 618–627 publications: 9 scientists 628–637 publications: 11 scientists 638–647 publications: 21 scientists 648–657 publications: 12 scientists 658–667 publications: 9 scientists 668–677 publications: 11 scientists 678–687 publications: 9 scientists 688–697 publications: 6 scientists 698–707 publications: 14 scientists 708–717 publications: 7 scientists 718–727 publications: 8 scientists 728–737 publications: 10 scientists 738–747 publications: 9 scientists 748–757 publications: 5 scientists 758–767 publications: 5 scientists 768–777 publications: 11 scientists 778–787 publications: 7 scientists 788–797 publications: 2 scientists 798–803 publications: 4 scientists 804+ publications: 100 scientists
38 publications 804+

This scientist: 203 publications — 49th percentile

49% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 804 publications or more.

Constantine D. Rakopoulos D-index placement in Engineering and Technology in 2026

The chart shows the D-index (discipline H-index) distribution of Engineering and Technology scientists ranked by Research.com in 2026. The highlighted bar marks where Constantine D. Rakopoulos sits on this spectrum.

30 D-Index: 59 scientists 31 D-Index: 114 scientists 32 D-Index: 129 scientists 33 D-Index: 189 scientists 34 D-Index: 200 scientists 35 D-Index: 262 scientists 36 D-Index: 311 scientists 37 D-Index: 312 scientists 38 D-Index: 350 scientists 39 D-Index: 385 scientists 40 D-Index: 348 scientists 41 D-Index: 362 scientists 42 D-Index: 426 scientists 43 D-Index: 380 scientists 44 D-Index: 310 scientists 45 D-Index: 341 scientists 46 D-Index: 301 scientists 47 D-Index: 306 scientists 48 D-Index: 271 scientists 49 D-Index: 246 scientists 50 D-Index: 210 scientists 51 D-Index: 253 scientists 52 D-Index: 213 scientists 53 D-Index: 221 scientists 54 D-Index: 195 scientists 55 D-Index: 186 scientists 56 D-Index: 170 scientists 57 D-Index: 167 scientists 58 D-Index: 166 scientists 59 D-Index: 144 scientists 60 D-Index: 152 scientists 61 D-Index: 141 scientists 62 D-Index: 138 scientists 63 D-Index: 131 scientists 64 D-Index: 118 scientists 65 D-Index: 114 scientists 66 D-Index: 119 scientists 67 D-Index: 95 scientists 68 D-Index: 87 scientists 69 D-Index: 77 scientists 70 D-Index: 89 scientists 71 D-Index: 69 scientists 72 D-Index: 54 scientists 73 D-Index: 46 scientists 74 D-Index: 55 scientists 75 D-Index: 54 scientists 76 D-Index: 49 scientists 77 D-Index: 53 scientists 78 D-Index: 46 scientists 79 D-Index: 28 scientists 80 D-Index: 39 scientists 81 D-Index: 36 scientists 82 D-Index: 24 scientists 83 D-Index: 26 scientists 84 D-Index: 36 scientists 85 D-Index: 18 scientists 86 D-Index: 25 scientists 87 D-Index: 19 scientists 88 D-Index: 26 scientists 89 D-Index: 27 scientists 90 D-Index: 23 scientists 91 D-Index: 15 scientists 92 D-Index: 12 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 13 scientists 97 D-Index: 13 scientists 98 D-Index: 9 scientists 99 D-Index: 7 scientists 100 D-Index: 7 scientists 101 D-Index: 8 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 9 scientists 105 D-Index: 6 scientists 106 D-Index: 9 scientists 107+ D-Index: 99 scientists
30 D-Index 107+

This scientist: 69 D-Index — 89th percentile

89% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 107 D-Index or more.

Research.com Recognitions

  • 2026 - Research.com Engineering and Technology in Greece Leader Award
  • 2025 - Research.com Engineering and Technology in Greece Leader Award

Overview

What is he best known for?

The fields of study he is best known for:

  • Thermodynamics
  • Internal combustion engine
  • Diesel engine

Diesel fuel, Diesel engine, Waste management, Diesel exhaust and Internal combustion engine are his primary areas of study. His Diesel fuel research incorporates elements of Diesel cycle, Exhaust gas recirculation and Homogeneous charge compression ignition. The Diesel engine study combines topics in areas such as Soot, Conical surface and Fuel injection.

The concepts of his Waste management study are interwoven with issues in NOx and Carbureted compression ignition model engine. The study incorporates disciplines such as Diesel particulate filter and Winter diesel fuel in addition to Diesel exhaust. His Internal combustion engine study combines topics in areas such as Fuel mass fraction, Exhaust gas and Combustion chamber.

His most cited work include:

  • Comparative performance and emissions study of a direct injection Diesel engine using blends of Diesel fuel with vegetable oils or bio-diesels of various origins (495 citations)
  • Effects of butanol–diesel fuel blends on the performance and emissions of a high-speed DI diesel engine (417 citations)
  • Emission characteristics of high speed, dual fuel, compression ignition engine operating in a wide range of natural gas/diesel fuel proportions (270 citations)

What are the main themes of his work throughout his whole career to date?

His primary areas of study are Diesel engine, Diesel fuel, Internal combustion engine, Waste management and Automotive engineering. His studies deal with areas such as Mechanical engineering, Diesel cycle, Homogeneous charge compression ignition, Combustion chamber and Turbocharger as well as Diesel engine. His Diesel fuel research is multidisciplinary, incorporating elements of Fuel injection and Exhaust gas recirculation.

His Internal combustion engine research includes themes of Fuel mass fraction and Exhaust gas. His Waste management research integrates issues from NOx and Fuel efficiency. In his research on the topic of Automotive engineering, Meteorology is strongly related with Nuclear engineering.

He most often published in these fields:

  • Diesel engine (68.25%)
  • Diesel fuel (50.79%)
  • Internal combustion engine (31.75%)

What were the highlights of his more recent work (between 2015-2020)?

  • Diesel fuel (50.79%)
  • Waste management (30.95%)
  • Diesel engine (68.25%)

In recent papers he was focusing on the following fields of study:

His scientific interests lie mostly in Diesel fuel, Waste management, Diesel engine, Biofuel and Nuclear engineering. Constantine D. Rakopoulos combines subjects such as Oxygen enrichment, Exhaust gas recirculation and Natural gas with his study of Diesel fuel. Constantine D. Rakopoulos mostly deals with Diesel exhaust in his studies of Waste management.

Constantine D. Rakopoulos has researched Diesel engine in several fields, including Emulsion, Smoke and Turbocharger. Constantine D. Rakopoulos usually deals with Nuclear engineering and limits it to topics linked to Computational fluid dynamics and Combustion analysis, Mechanical engineering and Spark plug. Constantine D. Rakopoulos interconnects Fuel oil and Alcohol fuel in the investigation of issues within Winter diesel fuel.

Between 2015 and 2020, his most popular works were:

  • Butanol or DEE blends with either straight vegetable oil or biodiesel excluding fossil fuel: Comparative effects on diesel engine combustion attributes, cyclic variability and regulated emissions trade-off (89 citations)
  • Combustion noise radiation during dynamic diesel engine operation including effects of various biofuel blends: A review (41 citations)
  • Investigating the EGR rate and temperature impact on diesel engine combustion and emissions under various injection timings and loads by comprehensive two-zone modeling (40 citations)

In his most recent research, the most cited papers focused on:

  • Thermodynamics
  • Mechanical engineering
  • Internal combustion engine

His primary scientific interests are in Diesel engine, Diesel fuel, Waste management, Smoke and Biofuel. His biological study spans a wide range of topics, including Ignition system, NOx and Turbocharger. His work in NOx is not limited to one particular discipline; it also encompasses Combustion chamber.

His Diesel fuel research is multidisciplinary, incorporating perspectives in Injector and Transient. His Injector research includes elements of Nuclear engineering, Exhaust gas recirculation, Cylinder contents and Soot. His Transient research is multidisciplinary, relying on both Emphasis, Automotive engineering, Naturally aspirated engine and Cylinder.

Best Publications

  • Comparative performance and emissions study of a direct injection Diesel engine using blends of Diesel fuel with vegetable oils or bio-diesels of various origins

    C.D. Rakopoulos;K.A. Antonopoulos;D.C. Rakopoulos;D.T. Hountalas

  • Effects of butanol–diesel fuel blends on the performance and emissions of a high-speed DI diesel engine

    D.C. Rakopoulos;C.D. Rakopoulos;E.G. Giakoumis;A.M. Dimaratos

  • Second-law analyses applied to internal combustion engines operation

    C.D. Rakopoulos;E.G. Giakoumis

  • Emission characteristics of high speed, dual fuel, compression ignition engine operating in a wide range of natural gas/diesel fuel proportions

    R.G. Papagiannakis;C.D. Rakopoulos;D.T. Hountalas;D.C. Rakopoulos

  • Effects of ethanol-diesel fuel blends on the performance and exhaust emissions of heavy duty DI diesel engine

    D.C. Rakopoulos;C.D. Rakopoulos;E.C. Kakaras;E.G. Giakoumis

  • Combustion heat release analysis of ethanol or n-butanol diesel fuel blends in heavy-duty DI diesel engine

    D.C. Rakopoulos;C.D. Rakopoulos;R.G. Papagiannakis;D.C. Kyritsis

  • Influence of properties of various common bio-fuels on the combustion and emission characteristics of high-speed DI (direct injection) diesel engine: Vegetable oil, bio-diesel, ethanol, n-butanol, diethyl ether

    Dimitrios C. Rakopoulos;Constantine D. Rakopoulos;Evangelos G. Giakoumis;Roussos G. Papagiannakis

  • Investigation of the performance and emissions of bus engine operating on butanol/diesel fuel blends

    D.C. Rakopoulos;C.D. Rakopoulos;D.T. Hountalas;E.C. Kakaras

  • Experimental heat release analysis and emissions of a HSDI diesel engine fueled with ethanol-diesel fuel blends

    C.D. Rakopoulos;K.A. Antonopoulos;D.C. Rakopoulos

  • Exhaust emissions of diesel engines operating under transient conditions with biodiesel fuel blends

    Evangelos G. Giakoumis;Constantine D. Rakopoulos;Athanasios M. Dimaratos;Dimitrios C. Rakopoulos

  • Exhaust emissions with ethanol or n-butanol diesel fuel blends during transient operation: A review

    Evangelos G. Giakoumis;Constantine D. Rakopoulos;Athanasios M. Dimaratos;Dimitrios C. Rakopoulos

  • Performance and emissions of bus engine using blends of diesel fuel with bio-diesel of sunflower or cottonseed oils derived from Greek feedstock

    C.D. Rakopoulos;D.C. Rakopoulos;D.T. Hountalas;E.G. Giakoumis

  • Characteristics of performance and emissions in high-speed direct injection diesel engine fueled with diethyl ether/diesel fuel blends

    Dimitrios C. Rakopoulos;Constantine D. Rakopoulos;Evangelos G. Giakoumis;Athanasios M. Dimaratos

  • Impact of properties of vegetable oil, bio-diesel, ethanol and n-butanol on the combustion and emissions of turbocharged HDDI diesel engine operating under steady and transient conditions

    Dimitrios C. Rakopoulos;Constantine D. Rakopoulos;Evangelos G. Giakoumis

  • Study of turbocharged diesel engine operation, pollutant emissions and combustion noise radiation during starting with bio-diesel or n-butanol diesel fuel blends

    C.D. Rakopoulos;A.M. Dimaratos;E.G. Giakoumis;D.C. Rakopoulos

  • Comparative second-law analysis of internal combustion engine operation for methane, methanol, and dodecane fuels

    C.D Rakopoulos;D.C Kyritsis

  • Investigating the emissions during acceleration of a turbocharged diesel engine operating with bio-diesel or n-butanol diesel fuel blends

    Constantine D. Rakopoulos;Athanasios M. Dimaratos;Evangelos G. Giakoumis;Dimitrios C. Rakopoulos

  • Theoretical study of the effects of pilot fuel quantity and its injection timing on the performance and emissions of a dual fuel diesel engine

    R.G. Papagiannakis;D.T. Hountalas;C.D. Rakopoulos

  • Multi-zone modeling of combustion and emissions formation in DI diesel engine operating on ethanol–diesel fuel blends

    C.D. Rakopoulos;K.A. Antonopoulos;D.C. Rakopoulos;D.T. Hountalas

  • Validation and sensitivity analysis of a two zone Diesel engine model for combustion and emissions prediction

    C.D Rakopoulos;D.C Rakopoulos;E.G Giakoumis;D.C Kyritsis

Frequent Co-Authors

Evangelos G. Giakoumis
Evangelos G. Giakoumis National Technical University of Athens
Dimitrios C. Rakopoulos
Dimitrios C. Rakopoulos National Technical University of Athens
Dimitrios T. Hountalas
Dimitrios T. Hountalas National Technical University of Athens
George Kosmadakis
George Kosmadakis National Technical University of Athens
Emmanuel Kakaras
Emmanuel Kakaras National Technical University of Athens
George Tsatsaronis
George Tsatsaronis Technical University of Berlin
Panagiotis Grammelis
Panagiotis Grammelis Centre for Research and Technology Hellas
Sotirios Karellas
Sotirios Karellas National Technical University of Athens
Yiannis A. Levendis
Yiannis A. Levendis Northeastern University

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