Modification Compression Ratio Effect of Single Piston Gasoline Engine with Utilizing Producer Gas on Engine Performance
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The objective of this research was to study increasing compression ratio effect on brake power of a single piston gasoline engine by utilizing producer gas. Three equipments for using experiment were an updraft gasifier system, a brake power test set and a gasoline engine of Honda Model GX-120. The engine had the standard compression ratio of 7.5:1. The new compression ratio of 9.3:1 was modified by welding material at the top of the piston. The experiments were tested with two air value positions at 75% and 30% with two compression ratios of 7.5:1 and 9.3:1. It was found that the air value position at 75% and the compression ratio 9.3:1 had the brake power higher than the standard compression ratio 7.5:1. The position of air value at 75% with the maximum brake power for compression ratio 9.3:1 was 1,443.6 Watt at 3,800 rpm and the compression ratio 7.5:1 was 1,101.7 Watt at 2,900 rpm. The same compression ratio, the position of air value at 75% had engine speed and the brake power higher than the position of air value at 30%.
- Research Report