EFFECT OF THE THERMAL BARRIER COATING ON THE PERFORMANCE AND EXHAUST EMISSIONS OF A DIESEL ENGINE FUELED WITH A FISH OIL BIODIESEL–DIESEL BLEND
Heat Transfer Research, cilt.57, sa.8, ss.21-32, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 57 Sayı: 8
- Basım Tarihi: 2026
- Doi Numarası: 10.1615/heattransres.2026061275
- Dergi Adı: Heat Transfer Research
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
- Sayfa Sayıları: ss.21-32
- Anahtar Kelimeler: diesel engine, engine performance, exhausemission, fish oil biodiesel, thermal barrier coating
- İnönü Üniversitesi Adresli: Evet
Özet
This study aims to investigate the effects of a blended fuel containing 20% fish oil biodiesel (FOB) and 80% pure diesel fuel (D100) by volume on engine performance and exhaust emissions by comparatively testing them in two different diesel engines, with and without ZrO2 coating on piston and valve surfaces. For this purpose, the uncoated regular engine was first run with D100. Then the same engine was run with biodiesel–diesel blended fuel to determine both fuels’ engine performance and emission characteristics. Finally, the performance and emission values of the blended fuel tested in the ZrO2-coated diesel engine were determined. The test results of the uncoated blended fuel engine (FOB20) and the coated blended fuel engine (CFOB20) were comparatively evaluated based on the test results of the uncoated D100 fueled engine. The findings indicate that, although the exhaust emissions of the uncoated engine tested with blended fuel were more favorable than those of the diesel engine, the best results were obtained with the ZrO2-coated engine operating with blended fuel. When the engine test results for all three conditions were evaluated together, the uncoated engine running with blended fuel showed reductions in carbon monoxide (CO), hydrocarbon (HC), and nitrogen oxide (NOₓ) emissions by 10.61%, 15.29%, and 15.83%, respectively, compared to D100 fuel, while these reductions were 18.51%, 25.96%, and 20.39% in the ZrO2-coated engine. Consequently, it was determined that coating the combustion chamber components of diesel engines with ZrO2 increased combustion efficiency by reducing thermal losses. Furthermore, it was concluded that the use of waste-based, economical, domestic, and low-emission alternative fuels in diesel engines has the potential to reduce the adverse effects of harmful exhaust emissions on the environment and human health.