Upgrading and Optimisation of a Carburetted Engine to Fuel Injection for Best Fuel Consumption

This Final Year Project (FYP) Report is briefly discusses on the research and
study of a small engine working principle and the work step for Upgrading and
Optimisation a Carburetted Engine to Fuel Injection for Best Fuel
Consumption. The main objective of the project is to study about the Electronic
Fuel System (EFI) which is a way to reduce the fuel consumption for small engine.
This project is putting high expectation on lowest fuel consumption for a prototype,
which needs to be run on the farthest distance with one liter of petrol (former target
that this project would be used for Shell Eco Marathon Challenge). The challenge for
this project is to find the best way to install the EFI system. EFI system is well
known by its economical efficiency.
EFI is more economical saving compare to carburetor because it can control
the volume of fuel for the engine used, depending on the situation, performance and
need of the engine with helped from several sensors. This conversion will greatly
improve the engine reliability, consistency and ultimate fuel consumption. The
research was undergoing several steps to understand the behavior of the engine, trial
runs were done for several engine speeds to know the fuel rate and specific fuel
consumption. Alternative fuelling system and parts that needed to be modified had
been designed. Lab testing was done for the designed EFI system in order to create
the suitable match between the engine and the fuel injection system.