scholarly journals Characteristics of Cyan Bacteria (Green Algae) As Biodiesel in VCR Engine for Different Nozzles

2019 ◽  
Vol 9 (2) ◽  
pp. 4389-4394
Keyword(s):  
Diesel Engine ◽  
Green Algae ◽  
Compression Ratio ◽  
Injection Pressure ◽  
Hole Injection ◽  
Variable Compression Ratio ◽  
Performance And Emission ◽  
Emission Regulation ◽  
And Performance ◽  
Variable Compression

This present study investigates the performance and emission characteristics different injection pressure on variable compression ratio of a diesel engineusing cyanobacteria (greenalgae).In the Diesel Engine the experiments were controlled withvarious hole injection to study the effect onemission and performance by using conventional diesel future emission regulation will require substantial reductions of NOX and CO2 emissions from diesel engines. With cyanobacteria (green algae) as a biodiesel and diesel blends are prepared to use as fuel on variable compression ratio diesel engine.

Emulsified nano Al2O3 – Jatropha methyl ester blends: application in variable compression ratio engine

2020 ◽  
Vol 17 (5) ◽  
pp. 733-737
Author(s):  
Chiranjeeva Rao Seela ◽  
Ravi Sankar B.
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Compression Ratio ◽  
Engine Performance ◽  
Variable Compression Ratio ◽  
Content Type ◽  
Performance And Emission ◽  
Performance And Emissions ◽  
Improved Performance ◽  
Variable Compression

Purpose The purpose of this paper is to assess the influence of blends of Jatropha methyl ester (JME) and its nano Al2O3 emulsion on variable compression ratio diesel engine. The oxygen in alumina contributed for the smooth burning and resulted in improved performance and emissions. Design/Methodology/Approach The biodiesel (methyl ester) is prepared from the raw Jatropha oil. The B10, B20 and B30 blends of and their nanoemulsions are prepared with the 25, 50, 75 and 100 ppm of nano Al2O3. The prepared JME blends and its nanoemulsions are tested in a variable compression ratio (VCR) diesel engine to evaluate the engine performance and emission characteristics. Findings The nanoemulsion B20 + 50 ppm has given maximum brake thermal efficiency (BTE), and with the increased proportion of nanoparticle, the BTE was reduced. Also, the specific fuel consumption is lowest (0.2826 kg/kWh) for B20 + 50 ppm at the compression ratio 16.5 and full load which is 4.10% lower than the diesel and 5.8% lower than the B20 blend. As the load increases, NOx emission increases owing to higher peak temperatures in the combustion chamber. The JME-nano Al2O3 emulsion reduces the HC and CO emission compared with all other fuels. Originality/Value Novel nano emulsions are prepared, characterized and tested on VCR engine.

H2O2 as fuel additive in bio-diesel for emission reduction and performance enhancement of variable compression ratio (VCR) diesel engine

2021 ◽  
Author(s):  
Kodanda Rama Rao Chebattina ◽  
Srinivas Vadapalli ◽  
Uma Chaithanya Pathem ◽  
Ashok Sirasapalli ◽  
Chanakkya Chandreish Lodagala ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Compression Ratio ◽  
Emission Reduction ◽  
Performance Enhancement ◽  
Fuel Additive ◽  
Variable Compression Ratio ◽  
And Performance ◽  
Variable Compression

Effect of injection parameters on the performance and emission characteristics of a variable compression ratio diesel engine with plastic oil blends – An experimental study

2018 ◽  
Vol 29 (4) ◽  
pp. 492-510 ◽  
Author(s):  
B Govinda Rao ◽  
Y Datta Bharadwaz ◽  
Chukka Virajitha ◽  
V Dharma Rao
Keyword(s):  
Experimental Study ◽  
Diesel Engine ◽  
Compression Ratio ◽  
Injection Timing ◽  
Emission Characteristics ◽  
Variable Compression Ratio ◽  
Performance And Emission ◽  
Oil Blends ◽  
Injection Parameters ◽  
Variable Compression

Due to the depleting fossil fuel reserves and increasing environmental concerns, researchers have been studying the effect of adding different types of oils to diesel and more recently plastic oil. The present paper is an experimental study of the effect of compression ratio and injection parameters such as injection pressures and injection timing on the performance and emission characteristics of a variable compression ratio diesel engine fuelled with blends of plastic oil. Various proportions of ethanol and diesel are blended with plastic oils for the preparation of test fuels. It is observed from the experimental study that P90D5E5 blend gives the highest brake thermal efficiency yielding an increase of 16% and 38% compared with pure diesel and pure plastic oil, respectively. Smoke emissions are found to be the lowest for P90D5E5 than diesel and P100. Brake-specific fuel consumption, carbon monoxide and smoke values are reduced for all blends with an increase in injection timing, pressure and compression ratio. Combustion analysis of the blends indicates higher values of cylinder pressures and net heat release rates for P90D5E5 and P100, respectively.

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