Performance study of a diesel engine by first generation bio-fuel blends with fossil fuel: An experimental study

2013 ◽  
Vol 5 (1) ◽  
pp. 013118 ◽  
Author(s):  
A. K. Azad ◽  
S. M. Ameer Uddin
2011 ◽  
Vol 8 (6) ◽  
pp. 655-668 ◽  
Author(s):  
P. Shanmugam ◽  
V. Sivakumar ◽  
A. Murugesan ◽  
C. Umarani

2021 ◽  
pp. 1-18
Author(s):  
Nguyen Chi Thanh Thanh ◽  
Ahmad El Askary Askary ◽  
Ashraf Elfasakhany Elfasakhany ◽  
S Nithya

Abstract This paper explores the exergy analysis of the diesel engine with the selected Spirulina Microalgae biooil (SMBO) biodiesel. The adaptability of the biofuels as an efficient replacement to the fossil fuel has to be tested and proved. To estimate the overall efficiency of the engine with the biofuel blends, it is essential to find out the energy conversion capability of the engine. Different fuel blends were taken as B0 (100% diesel), B10 (10% SMBO+90% diesel), B20 (20% SMBO+80% diesel) and B30 (30% SMBOO+70% diesel). All experimental tests were conducted in a naturally aspirated DI engine. The brake power (BP), heat release rate (HRR), exergy destruction, ideal efficiency, actual efficiency, exergy rate and energy rate of the fuel as well as exhaust were measured for all fuel blends. All tests were conducted at different rpm from 0 to 3000 rpm with 500 rpm interval and also at different loads such as 0%, 25%, 50%, 75% and 100% load. The loss of exergy of fuel and thermal was on the rise and noticed in B0, B10, B20 and B30 while the HRR and loss of exergy rate were found in exhaust as more decreasing one in B10, B20 and B30 fuel blends than B0 (pure diesel).


Author(s):  
Leonard J. Hamilton ◽  
Jim S. Cowart ◽  
Dianne Luning-Prak ◽  
Patrick A. Caton

The molecular composition of new hydrotreated renewable fuels consists of both straight chain and branched alkanes. These new fuels do not contain aromatic or cyclo-paraffinic hydro-carbon compounds which are regularly seen in conventional petroleum fuels. Both experimental and modeling work has shown that straight chain alkanes have shorter ignition delays (e.g. higher cetane number) as compared to branched alkanes. In order to better understand the effects of branched and straight chain alkanes fuels in diesel engines, an experimental study was pursued using binary blends of iso-dodecane (iC12H26 with abbreviation: iC12) and normal-hexadecane (nC16H34 with abbreviation nC16) in a military diesel engine (AM General HMMWV ‘Humvee’ engine). Mixtures of 50% iC12 with 50% nC16 as well as 25% iC12 with 75% nC16 were compared to 100% nC16 (cetane) fueled engine operation across the entire speed-load range. Higher nC16 fuel content operation resulted in modestly earlier fuel injection events and combustion phasing that delievered slightly worse engine brake performance (torque and fuel consumption). Interestingly, ignition delay and overall burn durations were relatively insensitive to the binary blends tested. The significantly different physical properties of iC12 relative to nC16 are believed to affect the fuel injection event leading to later fuel injection with increasing iC12 content. Later injection into a hotter chamber mitigates the lower cetane number of the higher iC12 content fuel blends.


2019 ◽  
Vol 7 ◽  
pp. 20-26
Author(s):  
Anshu Kshetri ◽  
Manish Sakhakarmy ◽  
Rukesh Gusain

 The rate of fossil fuel consumption is soaring with population growth but the fossil fuel reserves are finite in nature. It is only a matter of when they run out - not if. Every year, billions of tons of fossil fuel oil is consumed globally. So it is high time we contemplated over other alternative fuels. One such alternative is the use of Straight Vegetable Oil (SVO) or its blend in diesel engine if performance, emission and maintenance of an engine are comparable to diesel fuel. The main objective of this research was to evaluate the effectiveness of commercially available Soybean oil and diesel blends on the performance characteristics of Kirloskar single cylinder diesel engine. This study also sheds light on comparison and measurement of physical properties of diesel and test fuels i.e., the blends, and correlates them with the performance test result. It is concluded that the tested blends can be used safely and effectively in the diesel engine, at least in small blending ratios with normal Diesel fuel.


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