The Effect of Secondary Air Injection (SAI) System on Engine Performance of Yamaha Jupiter Z New 115cc

Kirono, Ganang and , Ir. Subroto, M.T. (2022) The Effect of Secondary Air Injection (SAI) System on Engine Performance of Yamaha Jupiter Z New 115cc. Skripsi thesis, Universitas Muhammadiyah Surakarta.

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Abstract

The purpose of this study was to determine the effect of the addition of the SAI system on the performance of a four-stroke motorbike. This SAI system is the addition of a second air supply directly to the combustion chamber through the hole near the intake valve and also adds the air supply from the air filter. Performance testing of this four-stroke petrol engine using an electric dynamometer (dyno test) at 4500 - 9000 rpm with loading on the Jupiter Z New 115cc motor shaft, then the force will be measured and will be converted into torque and power data that can be seen on the monitor screen. Testing without the SAI system was carried out twice as a comparison and then followed by two tests using the SAI system so that the results were more relevant. The results showed that the maximum engine torque without using the SAI system was 7.6 Nm at 4403 rpm and using the SAI system was 7.7 Nm at 4838 rpm so that it increased 0.1 Nm. Then, the maximum engine power without the SAI system is 7.05 Hp at 7483 rpm and using the SAI system is 7.1 Hp at 7375 rpm so that the engine power increases by 0.05 Hp. From this research, the addition of a second air supply has an effect on the performance of a four-stroke petrol engine.

Item Type:	Thesis (Skripsi)
Uncontrolled Keywords:	petrol engine, engine performance, secondary air injection system
Subjects:	T Technology > TJ Mechanical engineering and machinery T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions:	Fakultas Teknik > Teknik Otomotif
Depositing User:	GANANG KIRONO
Date Deposited:	05 Aug 2022 03:25
Last Modified:	05 Aug 2022 03:28
URI:	http://eprints.ums.ac.id/id/eprint/102332

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