ISSN 2319-5347, ISI Impact Factor: 0.763

VOLUME 04  NO. 01 JANUARY 2016:

Title:         Combustion Characteristics of a Common-rail Compression Ignition Engine Fueled with Biodiesel Blends
Authors:      Vu Nguyen Hoang, Phuong X. Pham
Abstract:     Biodiesels are well-known as an alternative fuel for the compression ignition engine, however,it is notable that the difference between molecular structures of biodiesels and fossil diesel adds to the complexity of combustion process of diesel engines where turbulent, three-dimensional and multiphase processes occurring at high temperature and pressure conditions. An investigation of combustion process therefore is crucial in understanding the fuel-air cycle of compression ignition engines when operating with biodiesel blends.This study extensively analyses combustion phases (start and end of auto-ignition, ignition delay, and start of diffusion combustion) for a common-rail compression ignition engine operating with biodiesel-diesel blend(B0, B10 and B20). The analyse was performed employing in-cylinder pressure and its derivatives, net heat release rate, and engine vibration signals under a number of engine speed and fuel injection timing conditions.Equivalent duration of occurrences of maximum and minimum values of the second derivative of in-cylinder pressure observed for all biodiesel blends tested here could suggest that the auto-ignition duration is independent of the fuel blends, albeit the start of combustion occurs earlier with B10 and B20 owing their higher cetane value compared to that of fossil diesel.

Keywords:  bioethanol, corn mash, fermentation, Saccharomyces cerevisiae, temperature effect, heat shock
Pages:        13-18

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