Smart controller design of air to fuel ratio (AFR) and brake control system on gasoline engine

Abstract

Development of internal combustion engine control system is currently oriented on exhaust emissions, performance and fuel efficiency. This is caused by fuel prices rising which led to a crisis on the transport sector; therefore it is crucial to develop a fuel-efficient vehicles technology. Gasoline engine fuel efficiency can be improved by several methods such as by controlling the air-to-fuel ratio (AFR). AFR technology currently still has many problems due to its difficulty setting characteristic since AFR control is usually as internally engine control. Fuel efficiency can be improved by influence of external engine system. Brake control system is an external engine system that used in this research. The purpose of this research is to design and implement the AFR and brake control system in a vehicle to improve fuel efficiency of gasoline engines along braking period. The basic idea is the controller has to reduce the consumption of fuel injection along braking period. The applied control system on vehicle works using smart controller, such as Fuzzy Logic Controller (FLC). When the vehicle brakes, fuel injection is controlled by the ECU brake control system. This control system works in parallel with the vehicle control system default. The results show, when the engine speed exceeds 2500 rpm, AFR value increased infinitely, so that maximum efficiency is achieved. At engine speed less than 2500 rpm, AFR value reaches a value of 22. The fuel measurement has been able to show a decrease in fuel consumption of 6 liters to 4 liters within the distance of 50.7 km. Improvement of fuel efficiency can be achieved by approximately of 33.3%.

Design and Application of Electronic Tracking Control Systems (ETCS) to Improve Vehicle Safety

“…More modern, for vehicles with autonomous systems, have implemented security braking [9], [10]. Other safety systems that can work not only improve driving safety but can regulate fuel consumption [11], [12].…”

Untitled

“…Pengembangan sistem rem lain, diantaranya optimasi pengurangan beban pada sistem rem cakram kendaraan hybrid [10] dan perlakuan material komponen penyusun sistem rem, dengan penerapan teknologi tingkat tinggi [11]. Baru-baru ini, teknologi brake system tidak hanya mengendalikan laju kendaraan tetapi juga dapat mengendalikan konsumsi bahan bakar [12], [13].…”

Effect of Cassava Biogasoline on Fuel Consumption and CO Exhaust Emissions

“…Currently, the fuel control system technology has switched to Electronic Fuel Injection (EFI) with its variations. EFI technology is designed to allow the acquisition of lambda (λ) to approach ideal values under various engine conditions [15]. Lambda is the number used to represent the ideal air-fuel ratio (AFR), λ = 1.…”