Growth and characterization of deposits in the combustion chamber of a diesel engine fueled with B50 and Indonesian biodiesel fuel (IBF)

M Taufiq Suryantoro,Bambang Sugiarto,Fariz Mulyadi

doi:10.18331/brj2016.3.4.6

Abstract

Although used since 1893, biodiesel still faces problems that must be overcome before it can fully replace petroleum diesel. Existing literature shows that continuous use of biodiesel could lead to higher growth of deposits on critical engine components, contributing to lots of problems that could ultimately decrease engine performance. In this context, endurance tests were performed to compare the impacts of B50 and Indonesian biodiesel fuel (IBF: diesel fuel containing 10% palm oil biodiesel) on engine durability. More specifically, deposits growth as well as deposits structure and composition in response to the application of the above-mentioned fuel blends were investigated over 200 h. The results revealed that B50 produced relatively larger amounts of deposits especially on the valves and injector tip while also increased the risk of ring sticking. In addition, the structure and the elemental composition of the deposits formed on engine important components, i.e., injector tips, piston crown, intake/exhaust valves, cylinder head, and piston grooves when B50 was used were quite different compared with the IBF. Overall, more deposits formation was observed by increasing biodiesel inclusion rate while deposits tended to be wet and brittle as well.

Highlights

Owing to the growing industrialization and the expanding transportation sector around the globe, demands have largely increased for various fossiloriented energy carriers
This is ascribed to the fact that biodiesel blends have less thermal stability as well as higher density and viscosity values compared with typical diesel fuel, increasing the possibility of deposit formation in engines (Reksowardojo et al, 2010; Liaquat et al, 2014)
The objective of the present study was to investigate the formation of deposits in the combustion chamber of a diesel engine and to characterize them when Indonesian biodiesel fuel (IBF) containing 10% palm oil biodiesel and B50 fuel were used

Summary

Introduction

Owing to the growing industrialization and the expanding transportation sector around the globe, demands have largely increased for various fossiloriented energy carriers. Indonesian should use Fatty Acid Methyl Esters (FAMEs) produced from palm oil to substitute petroleum diesel fuel while the replacement rate is supposed to be increased slightly every year in order to reduce diesel fuel imports Such implementation is not without any problems either. One of the most crucial problems associated with the growing application of biodiesel is the excessive formation of carbon deposits in the combustion chamber This is ascribed to the fact that biodiesel blends have less thermal stability as well as higher density and viscosity values compared with typical diesel fuel, increasing the possibility of deposit formation in engines (Reksowardojo et al, 2010; Liaquat et al, 2014). It is worth highlighting that various biodiesel blends vary in terms of their physicochemical properties and their combustion characteristics

Objectives

Methods

Results

Conclusion