Dori Yuvenda, Bambang Sudarmanta, Jamaludin, Oki Muraza, Randi Purnama Putra, Remon Lapisa, Krismadinata, Rahadian Zainul, Asnil, Muji Setiyo, Sri Rizki Putri Primandari
Compressed natural gas (CNG) is a popular alternative fuel because of its more environmentally friendly properties than fossil fuels, including applications in diesel engines. However, supplying too much compressed natural gas fuel causes poor engine performance and emissions due to a decrease in the air-fuel ratio on the dual-fuel engine. The addition of air using electric superchargers was done to return the air-fuel ratio to ideal conditions. Lambda value (λ) was variation under low load (1.52 to 2.71), medium load (1.18 to 2.17), and high load (0.94 to 2.17) on a CNG-diesel dual fuel engine. The addition of pure air in each load can increase combustion stability in certain lambda, which was indicated by an increase in thermal efficiency, heat release rate, and a decrease in ignition delay, combustion duration, hydrocarbon, and carbon monoxide emissions. © Dori Yuvenda, et al.
Centre For Energy and Power Electronics Research (CEPER), Universitas Negeri Padang, 25131, Indonesia; Department of Mechanical Engineering, Universitas Negeri Padang, 25131, Indonesia; Department of Mechanical Engineering, Institut Teknologi Sepuluh Nopember, 60111, Indonesia; Department of Chemical Engineering, King Fahd University of Petroleum & Minerals, 31261, Saudi Arabia; Department Electrical Engineering, Universitas Negeri Padang, 25131, Indonesia; Department Chemical, Universitas Negeri Padang, 25131, Indonesia; Department of Automotive Engineering, Universitas Muhammadiyah Magelang, 56126, Indonesia; Center of Energy for Society and Industry (CESI), Universitas Muhammadiyah Magelang, Indonesia
