
Rancang Bangun dan Pengujian Penghalang Heliks sebagai Pencampur Udara-Biogas pada Motor Otto
Author(s) -
Herbert Hasudungan Siahaan,
Armansyah H. Tambunan,
Desrial,
Soni Solistia Wirawan
Publication year - 2021
Publication title -
jurnal keteknikan pertanian
Language(s) - English
Resource type - Journals
eISSN - 2407-0475
pISSN - 2338-8439
DOI - 10.19028/jtep.08.3.89-96
Subject(s) - biogas , homogeneity (statistics) , materials science , combustion , automotive engineering , chemistry , nuclear engineering , engineering , waste management , computer science , organic chemistry , machine learning
A helical barrier as air-biogas mixing device was designed and tested for direct use of biogas from digester in otto cycle generator set. Homogeneity of the air-fuel mixture can give better combustion reaction and increase engine power. The design was based on simulation, which shows that a 0.039 m length of helical barrier gave a 5% increase in power compared to non-helical barrier. Likewise, the simulations also showed that the helical barrier reduced specific fuel consumption (SFC) by 8%. Accordingly, the mixer with helical barrier was designed, and fabricated. Its performance test confirms the improvement resulted by using helical barriers as air-biogas mixer in the engine. The experiment showed that the power increased by 5% when using helical barrier, while SFC decreased by 4.5%. It is concluded that the helical barrier can increase the homogeneity of the mixture resulting in better engine performance. Besides, emissions produced from the engine using a helical barrier also decreased.