Investigating the Performance and Emission of the Gasoline and LPG Dual-Fuel Engine

Abstract

With the increasing environmental legislation and the increasing demand for the transportation sector, that relies mainly on conventional fuels for operating the engines of its vehicles, as this sector directly affects the environment through emissions comes a big importance and responsibility to focus on the fuels that these engines consume and the emissions it produces. In this project, the LPG dual fuel engine is studied and offered as an alternative fuel system for the engines to operate on it. Using both alternative fuel Liquefied Petroleum Gas (LPG) and conventional fuel gasoline in Spark ignition engine (SIEs), which is modified to be able to use the Gasoline as a primary fuel to warm up the engine and the LPG with a variation mixture in all time of action. The LPG dual fuel engine has a good thermal efficiency partially for low load and speed, the performance and emissions are mainly varying depending on these two factors, so this fact raises a challenge to reduce the emissions produced as much as possible when using the LPG dual fuel engine with in / out Exhaust Gas Recirculation (EGR) system, which is used to reduce Nitrogen Oxide (NOx), Carbon monoxide (CO). The approach will be studied and tested theoretically and practically to find the optimal outcome for the LPG dual fuel through this project. Key words: Gasoline, LPG, dual fuel, Environment, Economy.