PENGARUH PERUBAHAN WAKTU PENGAPIAN (IGNITION TIMING) TERHADAP EMISI GAS BUANG CO DAN HCPADA SEPEDA MOTOR VEGA R 110 CC TAHUN 2008 DENGAN BAHAN BAKAR LPG (LIQUEFIED PETROLEUM GAS)

Rastoto, Nur Dyan Enggar

Jurnal Nosel
Vol 2, No 2 (2013): October

The purpose of this research are: (1) To know the effect of modified ignition timing toexhaust emissions CO and HC on motorcycles Yamaha Vega R 110 CC in 2008 that use LPGfuel. (2) To know amount the effect of modified ignition timing to exhaust emissions CO andHC on motorcycles Yamaha Vega R 110 CC in 2008 that use LPG fuel by ignition timing 7?,10?, 13? BTDC.Based on this research can be conclude: (1) Modified ignition timing on the use of LPGfuel effect on the result of exhaust gas emissions levels of CO and HC. (2) The results gas emissionslevels  of  CO  0.041%  by  ignition  timing  7? BTDC,  the  results gas  emissions  levels  of  CO0.052% by ignition timing 10? BTDC, while the result gas emissions levels of CO 0.098% by13? BTDC. (3) Gas emissions levels of HC 130 ppm by ignition timing 7? BTDC, gas emissionslevels  of  HC  272.67  ppm  by  ignition  timing  10? BTDC,  while  gas  emissions  levels  of  HC473.33  ppm  by  ignition  timing13? BTDC.  (4)  The  ignition  timing  13? BTDC  increase  theresults  exhaust  gas  emissions  levels  of  CO  and  HC,  while  ignition  timing  7? BTDC  willdecrease the result exhaust gas emissions of CO and HC but also decrease engine power.