• V V R SESHAGIRI RAO

Alternate fuel research has been the topic of the highest priority in the context of depletion of fossil fuels at alarming rate. The high consumption of diesel fuel (DF) compels for the substitution of diesel fuel with suitable and renewable alternative fuels. Vegetable oils are the major alternative fuels for diesel fuel. They have comparable energy content and cetane number to diesel fuel. In the present work, the crude jatropha oil (CJO) is used as the alternative fuel for diesel. Experiments were conducted on the Conventional Diesel Engine (CE) to evaluate the performance and emissions with CJO operation, at different injection timings and injection pressures. The manufacturer’s recommended injection timing is 270 bTDC (before top dead centre). Study was undertaken to match the injection timing which would bring in improved performance of the engine over that of manufacturer’s recommended injection timing. The injection timing was varied from 270–340 bTDC. The injection pressure was varied from 190 bar to 270 bar (in steps of 40 bar). At the recommended injection pressure of 190 bar, the optimum injection timing was found to be 310 bTDC for diesel operation while it was 320 bTDC for CJO operation. At the optimum injection timing of 320 bTDC, CJO operation showed comparable performance when compared with diesel operation at recommended injection timing.

Crude jatropha oil, Performance, Exhaust Emissions, Injection Timing, Injection pressure

"EXPERIMENTAL INVESTIGATIONS ON PERFORMANCE EVALUATION OF DI DIESEL ENGINE WITH CRUDE JATROPHA OIL WITH VARYING INJECTION TIMINGS AND INJECTION PRESSURES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 4, page no.305-312, April-2018, Available :http://www.jetir.org/papers/JETIR1804060.pdf

"EXPERIMENTAL INVESTIGATIONS ON PERFORMANCE EVALUATION OF DI DIESEL ENGINE WITH CRUDE JATROPHA OIL WITH VARYING INJECTION TIMINGS AND INJECTION PRESSURES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 4, page no. pp305-312, April-2018, Available at : http://www.jetir.org/papers/JETIR1804060.pdf