Scopus
YÖKSİS Eşleşti
Theoretical and Experimental Investigation of the Performance of an Atkinson Cycle Engine
Arabian Journal for Science and Engineering · Ağustos 2021
YÖKSİS Kayıtları
Theoretical and Experimental Investigation of the Performance of an Atkinson Cycle Engine
Arabian Journal for Science and Engineering · 2021 SCI-Expanded
DOKTOR ÖĞRETİM ÜYESİ HALİL ERDİ GÜLCAN →
Makale Bilgileri
DergiArabian Journal for Science and Engineering
Yayın TarihiAğustos 2021
Cilt / Sayfa46 · 7841-7850
Scopus ID2-s2.0-85103568874
Özet
In this study, an Otto cycle engine was converted to the Atkinson cycle engine using the method of late intake valve closing and increasing the compression ratio. Firstly, the thermodynamic analysis was conducted. In the analysis, the variation of specific heats with temperature, heat losses, pumping, and mechanical friction losses was taken into account. In-cylinder pressure variations, torque, power, thermal efficiency and brake-specific fuel consumption variations with speed were obtained. For the experimental study, a new camshaft was designed and manufactured using a circular arc curve. The IVC timing of the Atkinson engine was delayed by a 20° crankshaft angle with respect to standard timing. The compression ratio was increased from 8.5 to 9.5. Tests were conducted at 1400–3400 rpm speed range at WOT. Experiments were conducted at three different operating conditions: Otto cycle for the standard engine, late closing of the intake valve at 20 ° CA at 8.5 compression ratio and late closing of the intake valve at 20 ° CA at 9.5 compression ratio. In the tests, the variation of torque, power, BSFC and thermal efficiency with speed were investigated. The results showed that torque, power, BSFC and thermal efficiency were improved with Atkinson CR9.5 operation compared to the standard Otto cycle operation at high speeds. It was obtained that the torque and power of the Atkinson CR9.5 cycle engine increased by 6.7% and the thermal efficiency increased by 12.8% at 3400 rpm speeds. In addition, BSFC of the Atkinson CR9.5 engine decreased by 12.7%.
Yazarlar (4)
1
Can Çinar
2
Abdullah Onur Ozdemir
3
Halil Erdi Gülcan
4
Tolga Topgül
Anahtar Kelimeler
Atkinson cycle
Compression ratio
Engine performance
Thermodynamic analysis
Valve timing
Kurumlar
Gazi Üniversitesi
Ankara Turkey
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
6
Atıf
4
Yazar
5
Anahtar Kelime