Abstract
Generally, the compression ignition (CI) engine that runs with emulsified biofuel (EB) or higher viscosity fuel experiences inferior performance and a higher emission compared to petro diesel engines. The modification is necessary to standard engine level in order to realize its application. This paper proposes a guide vane design (GVD), which needs to be installed in the intake manifold, is incorporated with shallow depth re-entrance combustion chamber (SCC) pistons. This will organize and develop proper in-cylinder airflow to promote better diffusion, evaporation and combustion processes. The model of GVD and SCC piston was designed using SolidWorks 2017; while ANSYS Fluent version 15 was utilized to run a 3D analysis of the cold flow IC engine. In this research, seven designs of GVD with the number of vanes varied from two to eight vanes (V2–V8) are used. The four-vane model (V4) has shown an excellent turbulent flow as well as swirl, tumble and cross tumble ratios in the fuel-injected region compared to other designs. This is indispensable to break up heavier fuel molecules of EB to mix with the air that will eventually improve engine performance.
Highlights
A diesel engine is one of the most indispensable power generation systems and is mainly used in industrial, public transportation, power generation, heavy-duty machinery, and agricultural applications due to their higher fuel-conversion efficiency, power output, torque and reliability compared to gasoline engines [1]
The in-cylinder airflow rate and its characteristics are well-recognized such that they can enhance the evaporation, diffusion and combustion process. It can be utilized for emulsified biofuel to improve engine performance and reduce engine emissions
Results and discussion will focus on the events taking place within the fuel injection period or ignition delay, the time difference between start of injection (SOI) and start of combustion (SOC)
Summary
A diesel engine is one of the most indispensable power generation systems and is mainly used in industrial, public transportation, power generation, heavy-duty machinery, and agricultural applications due to their higher fuel-conversion efficiency, power output, torque and reliability compared to gasoline engines [1]. The emissions such as carbon monoxide (CO), hydrocarbon (HC) and carbon dioxide (CO2 ) from a diesel engine is much lesser compared to the gasoline engine emissions. Non-conventional types of fuel, made from biological resources such as biofuel and biodiesel, have been researched. These studied aimed to tackle the problems that arise due to the comparable properties with that of fossil fuels
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