• Hari Vishnu Khatri
• Satendra Singh

Abstract : Decreasing diesel and petrol reserves, increasing price of fossil fuel, global warming, and environmental issues and their regulation creates an international interest and vision for development in alternate and sustainable fuel for the engines. To meet the energy demand gap of transport sector, biodiesel has attracted attention due to its better combustion, renewable nature, and biodegradability and nontoxic properties. Cotton seed oil is cheap, non-edible, high viscosity, low volatility and widely availability. Additives are also used to improve combustion and ignition efficiency and to enhance performance of the engine. Present work investigate the effects of butanol as an oxygenated additive on performance of variable compression engine and compare it using blends of diesel and cotton seed methyl ester at 2 compression ratio 17, 18 on various loads. The methyl esters of cotton seed is prepared by transesterification with methanol and potassium hydroxide as catalyst. The blends of methyl ester are prepared on volume basis with butanol additive i.e. B20, B20+2%, B20+4%, B20+6%. The test results concluded that BTE is increased for all the percentage of additive in the test fuel as compared to B20 and it is 29.01% highest for B20+6% at 75% of total load at compression ratio 18. BSFC also decreased for all percentage of additives in test fuel as compared to B20 and is 0.309kJ/Kg.hr lowest for B20+6% at 75% of total load on CR18. It has been concluded that CSME with Butanol as additive has been used as biofuels thus stating that B20+6% at 18 CR is the most suitable blends and that can be used in place of pure diesel without making any changes in the conventional engine.

Brake Thermal Efficiency, Brake Specific Fuel Consumption, Biodiesel, Additive, Compression Ratio

"EFFECTS OF BUTANOL AS AN OXYGENETED ADDITIVE ON PERFORMANCE OF VCR ENGINE FUELLED WITH COTTONSEED METHYL ESTER-DIESEL BLENDS AT 2 COMPRESSION RATIO", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.133-140, June 2019, Available :http://www.jetir.org/papers/JETIR1907476.pdf

"EFFECTS OF BUTANOL AS AN OXYGENETED ADDITIVE ON PERFORMANCE OF VCR ENGINE FUELLED WITH COTTONSEED METHYL ESTER-DIESEL BLENDS AT 2 COMPRESSION RATIO", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp133-140, June 2019, Available at : http://www.jetir.org/papers/JETIR1907476.pdf