PENGARUH VARIASI WAKTU PENGAPIAN DAN VOLUME LARUTAN ELEKTROLIT PADA ELEKTROLISER TERHADAP EMISI GAS BUANG CO DAN HC SUPRA X 125 TAHUN 2007 SEBAGAI MATERI TAMBAHAN PADA MATA KULIAH MOTOR BAKAR

The purpose of this reseacrch are to: (1) Investigate the effect of using electrolyzer with variety of electrolyte volume to exhaust gas emissions CO and HC Supra X 125 in 2007 Motorcycles. (2) Investigate the effect of modified ignition timing to exhaust gas emissions CO and HC Supra X 125 in 2007 Motorcycles. (3) Investigate the effect of comparing electrolyte volume on electrolyzer and modified ignition timing to amount exhaust gas emissions CO and HC Supra X 125 in 2007 Motorcycles. This research was used experimental methods. The research was conducted at the Laboratory of Automotive Mechanical Engineering Education Program, JPTK, FKIP, UNS Surakarta to the address on Ahmad Yani Street No. 200 Kartasura. The equipment that was used to measure CO and HC exhaust gas emissions was gas analyzer STARGAS 898 type. The population in this research was Supra X 125 in 2007 Motorcycle and sample in this research was Supra X 125 in 2007 Motorcycle with JB51E1915937 engine number. This research was analyzed using descriptive data analysis. This research was using variety of electrolyte volume: without electrolyzer, 300 cc, and 500 cc volume electrolyte of electrolyzer . This research were using 3 variations ignition timing which are magnet with a standard ignition timing (150 BTDC), 20 and 40 advanced ignition timing. Based on the results of this study concluded that the addition of electrolyzer with advanced ignition timing can reduce exhaust gas emissions CO and HC significantly. The lowest exhaust gas emissions level of CO is 0.558 %, produced in electrolyzer with 500 cc electrolyte volume and 170 before TDC ignition timing. The lowest exhaust gas emissions level of HC is 137,667 ppm, produced in electrolyzer with 500 cc electrolyte volume and 190 before TDC ignition timing