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PFI system for retrofitting small 4-stroke gasoline engines

Hushim, Mohd Faisal and Alimin, Ahmad Jais and Selamat, Hazlina and Muslim, Mohd Taufiq (2013) PFI system for retrofitting small 4-stroke gasoline engines. International Journal of Environmental Science and Development, 4 (4). pp. 375-378. ISSN 20100264


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Fuel injection system is a promising technology that enhances positively the fuel economy, engine performances and emission reduction, as compared to the conventional carburetor system. Currently, motorcycles using carburetor system are widely used as a mean of transportation especially in urban areas. This conventional fuelling system produces more harmful emissions and consumes more fuel compared to the fuel injection system. It is therefore desirable to have a fuel injection system that can easily be retrofitted to the current on-road motorcycles. This paper presents a review and comparative study using 1-D simulation software - GT-Power, on electronic fuel injection (EFI) system between port-fuel injection (PFI) and direct injection (GDI) system for retrofitment purpose of small 125cc 4-stroke gasoline engine. From this study, PFI system has been selected based on its high brake power, brake torque, and brake mean effective pressure with low brake specific fuel consumption.

Item Type: Article
Uncontrolled Keywords: Fuel injection system; retrofitment; small gasoline engine
Subjects: T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL1-484 Motor vehicles. Cycles
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Energy and Thermofluid Engineering
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 13 Aug 2018 03:36
Last Modified: 13 Aug 2018 03:36
URI: http://eprints.uthm.edu.my/id/eprint/8974
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