Combustion and emission characteristics of an esterified linseed oil-fuelled variable compression ratio diesel engine

2018 ◽  
Vol 15 (2) ◽  
pp. 183-191
Author(s):  
Ganesh S. Warkhade ◽  
A. Veeresh Babu
Keyword(s):  
Diesel Engine ◽  
Compression Ratio ◽  
Diesel Fuel ◽  
Linseed Oil ◽  
Emission Characteristics ◽  
Gas Temperature ◽  
Compression Ignition Engine ◽  
Variable Compression Ratio ◽  
Content Type ◽  
Variable Compression

Purpose The purpose of this study is to get much insight about the combustion and emission characteristics of partially processed high free fatty acid linseed oil, i.e. esterified linseed oil (ELO), and diesel fuel in a single-cylinder compression ignition engine. Design/methodology/approach The variable compression ratio (CR) diesel engine (3.5 kW) of CR ranging from 12:1 to 18:1 is used for the experimentation purpose. In this study, CR varied from 16:1 to 18:1 for investigating the combustion and emissions characteristics of ELO. Various features such as combustion pressure, net heat release rate and mean gas temperature are analysed. The emission characteristics such as hydrocarbon, carbon monoxide, carbon dioxide and nitrogen dioxide are investigated with different loads and CRs. The effect of an ambient temperature condition is also reported. Findings Results from this investigation reveal that the burning of ELO is found to be advanced for all CRs as compared to diesel fuel, whereas these features were found to be lower for a CR of 17. Emissions of ELO are found to be higher at all loads and CRs. Overall, this study provides a necessary framework to enhance further research in this area. Originality/value This investigation shows that ELO has better combustion in the first phase of combustion. However, the exhaust emissions of ELO have higher value due to improper combustion in the second and subsequent phase of combustion due to higher viscosity.

scholarly journals Experimental Investigation of Combustion and Emission Characteristics of Variable Compression Ratio Compression Ignition Engine Using Cotton Seed Oil Biodiesel Blends

2017 ◽  
Vol 7 (2 (S)) ◽  
pp. 34
Author(s):  
Bhojraj Kale ◽  
V.N. Borikar ◽  
P.A. Hatwalne ◽  
V. M. Nimbalkar
Keyword(s):  
Compression Ratio ◽  
Alternative Fuels ◽  
Emission Characteristics ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Environment Friendly ◽  
Variable Compression Ratio ◽  
Biodiesel Blends ◽  
Increasing Demand ◽  
Variable Compression

<p>The increasing demand of petroleum and its availability is inversely to each other. This gives the new area to researcher to find out the solution to this problem. This problem is also concern with socioeconomically issue; the solution should be acceptable to each one. The alternative fuels derived from vegetable are the keen area of research, which are economical, environment friendly and easily available. In this paper the cottonseed oil biodiesel blends is considered as fuel for variable compression ratio diesel engine. The combustion characteristics in terms of mass of fraction burnt is investigated for different compression ratio. The emission characteristics are also investigated in comparison with petroleum diesel without any modification in engine. The results are compatible with petroleum diesel.</p>

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.

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