The Pengaruh Penggunaan Sensor TPS Aftermarket Dengan Variasi Diameter Throttle Body Terhadap Kinerja Mesin Bensin Satu Silinder 150cc

The Throttle Position Sensor (TPS) plays a crucial role in detecting the throttle valve opening position, directly affecting the volume of air entering the combustion chamber, which impacts fuel efficiency and engine performance. This study aims to investigate the effect of TPS types and throttle body diameter variations on power output and fuel consumption in a 150cc single-cylinder motorcycle engine. An experimental method was applied, using both standard and aftermarket TPS types combined with throttle bodies of 26 mm, 28 mm, and 30 mm diameters. The best performance was achieved using the aftermarket TPS with a 26 mm throttle body, producing a maximum power output of 15.41 HP at 9000 rpm. In contrast, the lowest power output was recorded with the standard TPS and 30 mm throttle body at 9.16 HP. The most efficient specific fuel consumption (SFC) was found in the aftermarket TPS with a 28 mm throttle body at 0.0484 kg/HP·h, while the highest SFC occurred with the aftermarket TPS and 26 mm throttle body at 0.1638 kg/HP·h. Maximum torque of 14.08 Nm was recorded with the aftermarket TPS and 26 mm throttle body, whereas the lowest torque, 9.99 Nm, occurred with the standard TPS and 30 mm throttle body.