Prediction of CI engine performance, emission and combustion characteristics using fish oil as a biodiesel at different injection timing using fuzzy logic

Fuel ◽  
2016 ◽  
Vol 183 ◽  
pp. 214-229 ◽  
Author(s):  
Gnanasekaran Sakthivel
Energy ◽  
2019 ◽  
Vol 166 ◽  
pp. 287-306 ◽  
Author(s):  
G. Sakthivel ◽  
C.M. Sivaraja ◽  
Bernard W. Ikua

Fuel ◽  
2011 ◽  
Vol 90 (8) ◽  
pp. 2782-2789 ◽  
Author(s):  
Thomas T. Kivevele ◽  
Lukács Kristóf ◽  
Ákos Bereczky ◽  
Makame M. Mbarawa

2011 ◽  
Vol 110-116 ◽  
pp. 357-369 ◽  
Author(s):  
Raja Shahzad ◽  
P. Naveenchandran ◽  
A. Rashid ◽  
Amir Aziz

This paper discusses the combustion characteristics of CNG under lean and stochiometric conditions in a direct injection engine. The experiments were carried out on a dedicated CNG-Direct Injection engine with 14:1 compression ratio. Combustion characteristics of CNG have been investigated on various injection timings. Injection timing of the fuel injection timing had significant effects on the engine performance, combustion and emissions. The effects became more significant when injection timing was retarded. Injection timing was set after the closing of intake valve and experiments are conducted at 0% and 50% load conditions. Lean stratified operation experiences faster combustion compared to that of stochiometric. In lean stratified operation, there were fast burn rates at the initial stage and slower burning at the later stage. Whereas in stochiometric conditions there is a slightly slower burn at the initial stage and a moderately faster burn at the later stage. The faster initial combustion in lean stratified operation might be due to rapid burn of the initial mixture due to higher turbulence, while a slower burn in the later stage due to diffusion. In contrary to that in stochiometric operations the initial burn is slightly slower, due to moderately strong turbulence and a faster burn due to moderately proceeding mixture. Thus the main effect of fuel injection timing can be explained by the fuel air mixing and the turbulence produced.


2018 ◽  
Vol 7 (3.34) ◽  
pp. 644
Author(s):  
Manjunath Channappagoudra ◽  
K Ramesh ◽  
Manavendra G

In the first phase of investigation standard engine (SE) parameters are modified and optimized as Injector opening pressure (IOP) of 230 bar, Injection timing (IT) of 26.deg.bTDC, Compression ratio (CR) of 18, Nozzle hole (NH) of 5 hole and Piston bowl geometry (PBG) of Re-entrant toroidal piston bowl geometry (RTPBG)) when engine is operated with B20 (20% dairy scum biodiesel+80% diesel) fuel blend sole. The modified engine with these optimized parameters has shown improved brake thermal efficiency (BTE) when compared to standard engine operated with B20 (B20-SE), which could be attributed to improved fuel atomization, reduction of fuel droplet size, increased cylinder temperature, enhanced swirl and squish in the modified engine. In second phase of investigation, dual fuel (B20+Bio-CNG) experiments are conducted on modified engine to examine the effect Bio-CNG (enriched biogas/methane) flow rates such as 0.12, 0.24, 0.36, 0.48, 0.60 and 0.72 kg/hr on modified engine performance, exhaust emission and combustion characteristics. Then dual fuel experimental results are compared with neat diesel and B20 fuel operations. The dual fueled engine with all Bio-CNG flow rates has resulted lower performance and combustion characteristics with increased emissions (HC and CO) when compared to single fuel (B20) operated engine. From dual operation, it concludes that 0.48 kg/hr Bio-CNG flow rate has experienced the smooth running and improved performance, emission and combustion characteristics among all other Bio-CNG flow rates, hence 0.48 kg/hr Bio-CNG flow rate is optimized.  


Author(s):  
V. Hariram ◽  
S. Seralathan ◽  
M. Rajasekaran ◽  
G. John

The present experimental investigation aims at improving the combustion and performance parameters by varying the injection timing. A 3.5 kW single cylinder stationary CI engine equipped with eddy current dynamometer is used in this investigation. The static injection timing is varied using spill method by an advancement and retirement of 2 CAD with respect to standard injection timing of 23 BTDC. On comparison with the standard injection timing, the brake thermal efficiency, cylinder pressure, rate of heat release, mean gas temperature and rate of pressure rise are found to increase along with a significant decrease in brake specific fuel consumption for an advanced injection timing of 21 BTDC. Negative improvement is observed with respect to retarded injection timing of 25 BTDC. Optimum parameters for enhanced engine performance is found to be 21 BTDC injection timing with a 200 bar injection pressure at rated speed.


2013 ◽  
Vol 36 (3) ◽  
pp. 142-154 ◽  
Author(s):  
M. Ilangkumaran ◽  
G. Sakthivel ◽  
U. Syam Kumar ◽  
M. Vasudevan ◽  
S. Venkatesh ◽  
...  

Fuel ◽  
2020 ◽  
Vol 262 ◽  
pp. 116539 ◽  
Author(s):  
R.K. Singh ◽  
Biswajit Ruj ◽  
A.K. Sadhukhan ◽  
P. Gupta ◽  
V.P. Tigga

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