TITLE:
Performance Characteristics of n-Butanol-Diesel Fuel Blend Fired in a Turbo-Charged Compression Ignition Engine
AUTHORS:
Lennox Siwale, Lukács Kristóf, Torok Adam, Akos Bereczky, Antal Penninger, Makame Mbarawa, Kolesnikov Andrei
KEYWORDS:
Brake Specific Fuel Consumption; Brake Thermal Efficiency; Exhaust Gas Temperature; n-Butanol/Diesel
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.1 No.5,
November
28,
2013
ABSTRACT:
In this study, n-butanol-diesel blends
were burned in a turbo-charged, direct injection diesel engine where the brake
thermal efficiency, (BTE) or brake specific fuel consumption, (BSFC) was
compared with that of ethanol-diesel or methanol-diesel blends in another study
by other authors. The test blends used were B5, B10 and B20 (where B5 is 5%
n-butanol by volume and 95% diesel fuel-DF). In this study, the BTE was higher
and the BSFC improved more than in the other study. Because of improved BTE
with increasing brake mean effective pressure, BMEP, the BSFC reduced, however
the increased shared volume of n-butanol in DF increased BSFC. Adding n-butanol
in DF slightly derated the torque, brake power output with increasing speed,
and caused a fall in exhaust gas temperatures, (EGT) which improves the
volumetric efficiency and reduces compression work. Therefore, a small-shared
volume of n-butanol in DF fired in a turbo-charged diesel engine performs
better in terms of BTE and BSFC than that of ethanol or methanol blending in
DF.