Scopus
YÖKSİS Eşleşti
Experimental investigation of the effect of variable valve lift on combustion stability and exhaust emissions in a diesel/methane CRDI engine
Energy · Ağustos 2024
YÖKSİS Kayıtları
Experimental investigation of the effect of variable valve lift on combustion stability and exhaust emissions in a diesel/methane CRDI engine
Energy · 2024 SCI-Expanded
DOKTOR ÖĞRETİM ÜYESİ HALİL ERDİ GÜLCAN →
Experimental investigation of the effect of variable valve lift on combustion stability and exhaust emissions in a diesel/methane CRDI engine
Energy · 2024 SCI-Expanded
PROFESÖR MURAT CİNİVİZ →
Makale Bilgileri
DergiEnergy
Yayın TarihiAğustos 2024
Cilt / Sayfa300
Scopus ID2-s2.0-85193026637
Özet
Diesel/methane combustion still encounters challenges in terms of lower combustion stability and elevated levels of HC and CO emissions. The valve lift (VL) technique is a method that contributes to increased in-cylinder volumetric efficiency, thereby improving engine performance and reducing emissions. Hence, the application of VL in diesel/methane operations would be highly significant. Therefore, an experimental study on the VL for reducing HC and CO emissions and enhancing combustion stability in a diesel/methane CRDI engine was performed at varying methane fractions and torques. In the study, three different cam profiles were used with VL extrapolated using Fourier series and designed: the original VL of 4.46 mm, as well as two different VLs of 4.0 mm and 4.9 mm. The methane in the total fuel energy was initially increased to 20 % and later further increased to 40 %. The experimental findings demonstrated that the augmented VL mitigated the prolonged ignition delay caused by the increase of methane fraction, thereby ensuring enhanced combustion stability across all torques. On the other hand, in diesel/methane operation, increasing the VL resulted in maximum reductions of approximately 17 % in HC, 6 % in CO emissions, and 75 % in smoke opacity.
Yazarlar (3)
1
Halil Erdi Gülcan
2
Nurullah Gültekin
ORCID: 0000-0002-0139-1352
3
Murat Ciniviz
Anahtar Kelimeler
Combustion stability
Diesel/methane dual fuel
Emissions
Variable valve lift
Kurumlar
Selçuk Üniversitesi
Selçuklu Turkey
Technical Sciences Vocational School
Karaman Turkey