PENGARUH VARIASI LOBE SEPARATION ANGLE CAMSHAFT DAN VARIASI PUTARAN MESIN TERHADAP DAYA PADA SEPEDA MOTOR HONDA SUPRA X 125 TAHUN 2008

Yoyok Drajat Siswanto

Abstract


This paper presents an experimental investigation of effect of variety lobe separation angle camshaft  to engine power. Lobe separation angle (LSA) camshaft variation used is LSA standart camshaft (104o), LSA widened camshaft (107o), and LSA narrowed camshaft (101o). Camshaft of Honda Supra X 125 is used for this research. This research at some speed of engine, these are 4000, 4500, 5000, 5500, 6000, 6500, 7000, 7500, 8000, 8500, 9000 and 9500 rpm.  Based on the data analysis it may be concluded  that the change of LSA narrowed camshaft (101o) produces a maximum power of increase. While the change of LSA widened camshaft (107o) produces a maximum power of decreases. LSA narrowed camshaft which impact on engine speed 4000 rpm – 5500 rpm generated power falls below the standard camshaft, while the engine speed above 6000 rpm increased power over standard camshaft. Differences that occur in this research is a positive effect because the engine power can be increased on a lap top.


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