Abstract:
Purpose of study was to compare the performance and specific fuel consumption between four-strokes gasoline engine and six-strokes gasoline engine with 100 cc motorcycle by using a HONDA motorcycle model C 100 P for four - strokes gasoline engine testing. Then it was adjusted as a six- strokes gasoline engine to be used in testing. Engine performance testing was conducted by using agitator hydraulics dynamometer TecQuipment brand, testing equipment TD114 and TD115. In the testing, the engine speed was changed from 2,000 to 5,000 rpm in every gear position ranging from gear 1, gear 2, gear 3 and gear 4 respectively. In the meantime, specific fuel consumption was tested by driving the motorbike with the speed from 30 to 90 km/hr. The result of the testing revealed that the value of engine performance and specific fuel consumption of four-strokes engine and six-strokes engine in 100 cc motorcycle was compared.
In the maximum performance of engine value of four - strokes engine at the speed of 4,000 rpm, gear 1 position, 2.5 N-m maximum torque 13.96 kW maximum brake power, specific fuel consumption in torque testing was 7.3 cc and specific fuel consumption in usual drinking test along the road in 90 km/hr was 38.17 km/l
Meanwhile, in the maximum performance of engine of six - strokes engine at the speed of 4,000 rpm, in gear 1 position, 2.6 N-m maximum torque, 14.51 km maximum brake power, specific consumption in the torque testing was 5.1 cc and in usual driving along the road at 90 km/hr was 55.71 km/l
The result of testing of performance and fuel consumption between four - strokes engine and six- strokes engine to compare at the speed of 4,000 rpm at gear 1 position, in the maximum torque of six stroke engine more than four - strokes engine at 0.10 N-m, in the more maximum brake power of six - strokes engine more than four - strokes engine at 0.55 kW, in the specific fuel consumption testing of torque the six - strokes engine is fuel consumption less than four - strokes engine at 2.22 cc and the specific fuel consumption driving a long the road at 90 km/hr the six - strokes engine has a distance more than four - strokes engine at 17.54 km/hr