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Academician

TOLGA TOPGÜL

Profesör

Gazi Üniversitesi Teknoloji Fakültesi Otomotiv Mühendisliği Bölümü

Research topics OpenAlex
  1. Ana Dal Mühendislik Temel Alanı
  2. Yan Dal Otomotiv Mühendisliği
Keywords YÖKSİS
Articles 27 YÖKSİS 27 · OpenAlex 0 Total citations 1,324 h-index 10 · OpenAlex OpenAlex coverage %78 matched 21 / 27 Q1 articles 11 Scopus · WoS Q1 3 Best field rank #36 / 191 Side field · top 18.8% Co-authors 21 6 Turkish institutions

Citation impact

Citation counts of the articles matched in OpenAlex, citing publications from Crossref and the Stanford/Elsevier list. Sources are shown separately and never added up.

OpenAlex YÖKSİS articles matched in OpenAlex: 21
h-index 10 Percentile in Türkiye: 84 #587 of 2,201 at their university by h-index
i10-index
10
Total citations
1,324
Top 3.2% in Türkiye
Per article
63.0
FWCI
1.58
1.00 = world average
World top 1%
0
World top 10%
5

Most cited articles

  1. The effects of ethanol unleaded gasoline blends on engine performance and exhaust emissions in a spark ignition engine 2009 world top 10% 387 citations
  2. Effect of ethanol gasoline blends on engine performance and exhaust emissions in different compression ratios 2006 world top 10% 307 citations
  3. The effects of ethanol unleaded gasoline blends and ignition timing on engine performance and exhaust emissions 2006 world top 10% 168 citations
How is this computed?

h-index and citations are computed from the citation counts of this academic’s YÖKSİS articles matched in OpenAlex (not Google Scholar, WoS or Scopus). Unmatched articles are not included.

Citing publications Crossref 256 publications citing 21 DOI-bearing articles · 40 Türkiye-affiliated
  • 2014 1
  • 2018 4
  • 2019 76
  • 2020 70
  • 2021 64
  • 2022 28
  • 2023 2
  • 2025 5
  • 2026 6
  1. DOI 10.1016/j.biombioe.2025.108591 2026
  2. DOI 10.1016/j.totche.2025.100022 2026
  3. DOI 10.1115/1.4070311 2026
  4. DOI 10.1016/b978-0-443-45114-0.00003-2 2026
  5. DOI 10.1016/j.fuel.2025.137773 2026
  6. DOI 10.1039/d5se01118c 2026
  7. DOI 10.1007/s13198-025-03104-9 2025
  8. DOI 10.4271/2025-28-0213 2025
  9. DOI 10.14529/power250308 2025
  10. DOI 10.1038/s41598-025-21025-2 2025
  11. DOI 10.1007/978-981-95-1252-2_11 2025
  12. Control and Optimization of Pre-Transmission Parallel Hybrid Vehicle with Fuzzy Logic Method and Comparison with Conventional Rule Based Control Strategy TR Tolga KOCAKULAK et al. · Politeknik Dergisi · 2023
  13. DOI 10.36909/jer.16829 2023
  14. Analysis of combustion and emissions characteristics of a DI diesel engine fuelled with diesel/biodiesel/glycerol tert-butyl ethers mixture by altering compression ratio and injection timing TR Abdülvahap Çakmak et al. · Fuel · 2022
  15. Kinematic viscosity estimation of fuel oil with comparison of machine learning methods TR Enes Cengiz et al. · Fuel · 2022
  16. Exergy analysis in a HCCI engine operated with diethyl ether-fusel oil blends TR Juan Zapata-Mina et al. · Case Studies in Thermal Engineering · 2022
  17. Experimental and statistical investigation of different valve lifts on HCCI combustion, performance and exhaust emissions using response surface method TR Mustafa Babagiray et al. · Energy · 2022 · cites 2 articles of this academic
  18. HCCI bir motorda emme manifoldu basıncının performans ve yanma karakteristiklerine etkilerinin incelenmesi TR Hamit SOLMAZ et al. · Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi · 2022
  19. Multi-objective optimization of DI diesel engine performance and emission parameters fueled with Jet-A1 – Diesel blends TR Seyed Mohammad Safieddin Ardebili et al. · Energy · 2022
  20. DOI 10.1016/j.energy.2021.121920 2022
  21. DOI 10.1177/14680874221081666 2022
  22. DOI 10.1615/interjenercleanenv.2021038246 2022 · cites 2 articles of this academic
  23. DOI 10.1007/978-3-658-37009-1_29 2022
  24. DOI 10.1016/j.energy.2021.121694 2022
  25. DOI 10.1115/1.4054134 2022
  26. DOI 10.1016/j.fuel.2021.122988 2022
  27. DOI 10.1016/j.matpr.2021.11.090 2022
  28. DOI 10.1016/j.ijhydene.2022.01.129 2022
  29. DOI 10.1016/j.fuel.2021.122004 2022
  30. DOI 10.1016/j.fuel.2022.123647 2022

Showing the 30 most recent.

Where does this list come from?

Extracted from the reference lists in Crossref’s public March 2026 data file; 20.3% of the file has been processed, so the list may be incomplete. Crossref citations are never added to or compared with the OpenAlex citation counts; the two sources have different coverage.

Field ranking

Position in the main-field, side-field and keyword cohorts by YÖKSİS article score; each card opens that ranking.

YÖKSİS ?
Keyword rankings 3

Works 27

YÖKSİS and OpenAlex records: index distribution, journals published in, a filterable article list and the other output types.

Indexes and citation percentiles

?
TR Index 5 articles
OpenAlex citation percentile
Top 1%0
Top 10%5
Avg · n 21 %56.7
Other counts

Scopus (SJR)

  • YÖKSİS rows 16

WoS (JCR)

  • YÖKSİS rows 17

Articles

Articles with YÖKSİS and OpenAlex source split; narrow by quartile or TR Index.

27articles

Journals with publications

15 journals

Narrow down

Scopus (SJR)
Q111 Q21 Q32 Q42
WoS (JCR)
Q13 Q28 Q33 Q43
TR Index
5articles

Article list

  1. 2023 Üç silindirli gama tipi bir Stirling motorunun ve geleneksel gama tipi bir Stirling motorunun nodal termodinamik analizleri ve performans kıyaslaması Journal of the Faculty of Engineering and Architecture of Gazi University DOI 10.17341/gazimmfd.944333 YÖKSİS TR Index SJR Q2 JCR Q3 OpenAlex 42.1%
  2. 2023 Combined Dynamic and Thermodynamic Investigation of a Crank-Shifted Alpha-Type Stirling Engine Arabian Journal for Science and Engineering DOI 10.1007/s13369-022-06980-6 YÖKSİS SJR Q1 JCR Q2 OpenAlex 36.3%
  3. 2023 Design and Optimization of the Single-Speed Transmission in an Electric Vehicle Politeknik Dergisi DOI 10.2339/politeknik.846990 YÖKSİS JCR Q4 OpenAlex 3.0%
  4. 2023 Experimental Investigation of the Effects of E85 and Gasoline on NO Emission in a Spark Ignition Engine Gazi Universitesi Fen Bilimleri Dergisi Part C: Tasarim ve Teknoloji DOI 10.29109/gujsc.1333519 YÖKSİS TR Index OpenAlex 31.8%
  5. 2022 Design, Manufacturing, and Thermodynamic Analysis of a Gamma-type Stirling Engine Powered by Solar Energy Strojniški vestnik - Journal of Mechanical Engineering DOI 10.5545/sv-jme.2022.368 YÖKSİS SJR Q3 JCR Q3 OpenAlex 55.8%
  6. 2022 Experimental investigation of the effects of hot-end and cold-end connection on the performance of a gamma type Stirling engine Elsevier BV DOI 10.1016/j.jestch.2022.101152 YÖKSİS SJR Q1 JCR Q1 OpenAlex 63.4%
  7. 2022 İçten Yanmalı Motorlu Bir Taşıtta Titreşim ve Gürültünün Deneysel Olarak Belirlenmesi Gazi Universitesi Fen Bilimleri Dergisi Part C: Tasarim ve Teknoloji DOI 10.29109/gujsc.1062950 YÖKSİS TR Index OpenAlex 29.0%
  8. 2022 Buji İle Ateşlemeli Bir Motorda İkincil Hava Enjeksiyonunun Egzoz Emisyonları ve Katalitik Konvertör Verimine Etkisinin Deneysel Analizi Politeknik Dergisi DOI 10.2339/politeknik.908649 YÖKSİS JCR Q4 OpenAlex 32.3%
  9. 2021 THE VARIATIONS OF THE EXHAUST EMISSIONS AT LOW AMBIENT TEMPERATURE FOR E10 AND M10 FUELED SI ENGINE Isı Bilimi ve Tekniği Dergisi DOI 10.47480/isibted.1025931 YÖKSİS SJR Q4 JCR Q4 OpenAlex 33.1%
  10. 2021 Theoretical and Experimental Investigation of the Performance of an Atkinson Cycle Engine Arabian Journal for Science and Engineering DOI 10.1007/s13369-021-05595-7 YÖKSİS SJR Q1 JCR Q2 OpenAlex 59.0%
  11. 2021 Effect of Profile Modification on Noise in Involute Gear Pair International Journal of Automotive Science And Technology DOI 10.30939/ijastech..881879 YÖKSİS TR Index SJR Q4 OpenAlex 33.2%
  12. 2020 Tek Nokta Enjeksiyonlu Buji ile Ateşlemeli Bir Motorda Motor Devrive Yükünün Motor Titreşimleri ve Gürültüye Etkisinin Deneyselİncelenmesi Düzce Üniversitesi Bilim ve Teknoloji Dergisi DOI https://dergipark.org.tr/tr/pub/dubited YÖKSİS TR Index OpenAlex 48.4%
  13. 2016 A numerical study on the effects of EGR and spark timing to combustion characteristics and NOx emission of a GDI engine International Journal of Green Energy DOI 10.1080/15435075.2014.909361 YÖKSİS SJR Q3 JCR Q3 OpenAlex 74.4%
  14. 2015 Effects of valve lift on the combustion and emissions of a HCCI gasoline engine Energy Conversion and Management DOI 10.1016/j.enconman.2015.01.072 YÖKSİS SJR Q1 JCR Q1 OpenAlex top 10% OpenAlex 93.6%
  15. 2015 The effects of MTBE blends on engine performance and exhaust emissions in a spark ignition engine Fuel Processing Technology DOI 10.1016/j.fuproc.2015.06.024 YÖKSİS SJR Q1 JCR Q1 OpenAlex 83.0%
  16. 2009 The effects of ethanol unleaded gasoline blends on engine performance and exhaust emissions in a spark ignition engine Renewable Energy DOI 10.1016/j.renene.2009.01.018 YÖKSİS SJR Q1 JCR Q2 OpenAlex top 10% OpenAlex 97.1%
  17. 2007 Comparative study of mathematical and experimental analysis of spark ignition engine performance used ethanol gasoline blend fuel Applied Thermal Engineering DOI 10.1016/j.applthermaleng.2006.07.027 YÖKSİS SJR Q1 JCR Q2 OpenAlex top 10% OpenAlex 92.9%
  18. 2007 Stirling Çevrimi ile Çalışan Beta Tipi Bir Motorun İmali ve Performans Testleri GÜ Mühendislik-Mimarlık Fakültesi Dergisi YÖKSİS
  19. 2006 Effect of ethanol gasoline blends on engine performance and exhaust emissions in different compression ratios Applied Thermal Engineering DOI 10.1016/j.applthermaleng.2006.03.006 YÖKSİS SJR Q1 JCR Q2 OpenAlex top 10% OpenAlex 98.1%
  20. 2006 The effects of ethanol unleaded gasoline blends and ignition timing on engine performance and exhaust emissions Renewable Energy DOI 10.1016/j.renene.2006.01.004 YÖKSİS SJR Q1 JCR Q2 OpenAlex top 10% OpenAlex 93.7%

Projects 6 See all (6) →

  1. — İçten Yanmalı Motorlarda LPG Kullanımının Motor Performansı ve Egzoz Emisyonlarına Etkisinin Araştırılması BAP · Tamamlandı
  2. — Homojen Karışımlı Sıkıştırma ile Ateşlemeli Bir Motorun Tasarımı ve İmalatı Üzerine Bir Araştırma BAP · Tamamlandı
  3. — Buji ile Ateşlemeli Bir Motorda Yakıt Enjeksiyon Sistemi Parametrelerinin Bilgisayarla Kontrolü BAP · Tamamlandı
  4. — Metil Alkol Etil Alkol İzo Propil Alkol ve MTBE Yakıtlarının Buji ile Ateşlemeli Bir Motorda Motor Performansı ve Egzoz Emisyonlarına Etkisinin Araştırılması BAP · Tamamlandı
  5. — Buji ile Ateşlemeli Motorlarda Etanol Benzin Karışımının Motor Performansına Etkilerinin İncelenmesi ve Optimum Çalışma Parametrelerininin Belirlenmesi BAP · Tamamlandı

Proceedings 16 See all (16) →

  1. 2006 Buji İle Ateşlemeli Bir Motorda E50 ve E85 Kullanımının NO Emisyonuna Etkisinin Deneysel Olarak İncelenmesi 9. Uluslararası Yanma Sempozyumu
  2. 2023 DÜŞÜK ORANDA ALKOL İÇEREN KARIŞIMLARIN MOTORUN KİRLETİCİ EGZOZ EMİSYONU SALINIMINA ETKİSİNİN DENEYSEL ANALİZİ 10th INTERNATIONAL ZEUGMA CONFERENCE ON SCIENTIFIC RESEARCH
  3. 2002 Yakıt Enjeksiyonlu Benzin Motorlarında Isınma Peryodunda Katalitik Konvertörün Egzoz Emisyonlarına Etkisinin İncelenmesi 7. Uluslararası Yanma Sempozyumu
  4. 2004 LPG ve Kurşunsuz Benzin Kullanılabilen Bir Taşıtta Katalitik Konvertör Verimlerinin Deneysel Olarak Karşılaştırılması 8. Uluslararası Yanma Sempozyumu
  5. 2006 Buji İle Ateşlemeli Bir Motorda MTBE Kullanımının Motor Performansına Etkisinin Deneysel Olarak İncelenmesi 9. Uluslararası Yanma Sempozyumu

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Collaboration network

From the author lists of YÖKSİS publication records. Duplicate records of a work count once; institutions are co-authors’ current YÖKSİS affiliations.

Co-authors
21
With an akaturk profile
15
Turkish institutions
6
Co-authored works
%93

Academic co-authors 15

  1. HÜSEYİN SERDAR YÜCESU Profesör · Gazi Üniversitesi same university 14
  2. CAN ÇINAR Profesör · Gazi Üniversitesi same university 12
  3. MELİH OKUR Profesör · Gazi Üniversitesi same university 11
  4. ABDULLAH ONUR ÖZDEMİR Doçent · Gazi Üniversitesi same university 2
  5. LATİF KASIM UYSAL Araştırma Görevlisi · Gazi Üniversitesi same university 2
  6. REGAİP MENKÜÇ Araştırma Görevlisi · Gazi Üniversitesi same university 2
  7. SUAT SARIDEMİR Profesör · Düzce Üniversitesi 2
  8. AHMET UYUMAZ Profesör · Burdur Mehmet Akif Ersoy Üniversitesi 1
  9. EMRE YILMAZ Profesör · Sakarya Uygulamalı Bilimler Üniversitesi 1
  10. FATİH ŞAHİN Profesör · Gazi Üniversitesi same university 1
Show all (15)
  1. HALİL ERDİ GÜLCAN Doçent · Selçuk Üniversitesi 1
  2. HAMİT SOLMAZ Profesör · Gazi Üniversitesi same university 1
  3. MESUT DÜZGÜN Profesör · Gazi Üniversitesi same university 1
  4. SEYFİ POLAT Profesör · Adana Alparslan Türkeş Bilim Ve Teknoloji Üniversitesi 1
  5. UĞUR ÖZEL Araştırma Görevlisi · Kocaeli Üniversitesi 1

National collaboration 6 institutions

Within own university21 joint works · Gazi Üniversitesi

  1. Düzce Üniversitesi 2 works · 1 academics
  2. Adana Alparslan Türkeş Bilim Ve Teknoloji Üniversitesi 1 works · 1 academics
  3. Burdur Mehmet Akif Ersoy Üniversitesi 1 works · 1 academics
  4. Kocaeli Üniversitesi 1 works · 1 academics
  5. Sakarya Uygulamalı Bilimler Üniversitesi 1 works · 1 academics
  6. Selçuk Üniversitesi 1 works · 1 academics

Other co-authors (incl. international) 6

ATİLLA KOCA 3HÜSEYİN BAŞ 3HALİT KARABULUT 2ÇAĞATAY ZAMAN 2ERDİ DEMİRCİMUSTAFA CEYHUN ERKOCA

Authors without an akaturk profile (international researchers, retired or former academics, students, clinicians) are grouped by name spelling; short forms such as “Gulluce M.” join the single full name they match.