Akgün F., Celebi S., Demir U., Yamik H.
THERMAL SCIENCE, cilt.29, sa.4 Part B, ss.301-311, 2025 (SCI-Expanded)
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Yayın Türü:
Makale / Tam Makale
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Cilt numarası:
29
Sayı:
4 Part B
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Basım Tarihi:
2025
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Doi Numarası:
10.2298/tsci2504001a
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Dergi Adı:
THERMAL SCIENCE
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Derginin Tarandığı İndeksler:
Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Directory of Open Access Journals
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Sayfa Sayıları:
ss.301-311
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Bilecik Şeyh Edebali Üniversitesi Adresli:
Evet
Özet
In this study, the effects of varying pre-injection rates (10%, 20%, 30%,
40%) on engine performance, combustion efficiency, and emissions were
investigated in a partial premixed compression ignition (PPCI) engine using
JP8 fuel at various loads (0%, 25%, 50%, 75%, and 100%) and compared with
diesel fuel. A 10% pre-injection rate was most effective in maintaining fuel
efficiency across loads, showing the lowest BSFC values. At 50% load, the
10% rate resulted in a brake specific fuel consumption of 294.22 g/kWh, only
9.69% higher than diesel. Higher rates (30% and 40%) increased fuel
consumption and decreased efficiency. Combustion efficiency and CO2
emissions improved with 20% and 30% rates, especially at high loads. At 75%
load, 30% pre-injection increased CO2 emissions to 8.827%, exceeding diesel
7.88%, indicating better combustion. Soot emissions decreased significantly
with 30% and 40% rates, but NOx emissions rose substantially, with the 40%
rate reaching 1448 ppm at full load. The 10% rate was deemed optimal for
balancing efficiency and low emissions, while higher rates, though
beneficial for combustion and soot, require measures to mitigate NOx
emissions.