The precarious challenge of the economic development in Nigeria is not far from its epileptic power supply. This challenge makes the use of electric power generators for both commercial and domestic purposes inevitable. The most common fuel used for powering these electric generators is gasoline. In the light of the abundant availability of natural gas in Nigeria this work set out to examine the exhaust emission of gasoline and LPG using a Kane Auto 4-1 & 5-1 Series Exhaust Gas Analyser which measures CO, HC, O2, CO2, emissions. The test engine was a single cylinder spark ignition Senwei portable generator fitted with a dual carburetor, hence can run on both fuel. The emission was recorded for varying load from 0 - 1200 watts for both fuels. The result shows that LPG emission for CO and HC was higher than for gasoline. The HC emission for LPG at idle running and low loads was very high and Gasoline CO2 emission was higher than LPG.

Keywords : Emission Characterization, LPG, Gasoline, Energy