Abstract             

This paper conveys an investigation to appraise the emission and performance from a VCRE fueled with a blend of turpentine oil and Jatropha bio-diesel mixed in equal proportions. This new blend has been prepared to develop a new biofuel alternative that is cost effective and provides a possible replacement of standard diesel fuel; the alternative blend comprises of turpentine oil with low viscosity and Jatropha biodiesel which known have relatively high viscosity leading to effective viscosity and other properties comparable with the diesel fuel. The standard operating parameters of the engine is set as per the primary fuel diesel. If a fuel from different origin is used then parameters such as injection pressure (IP), compression ratio (CR), injection timing must be optimized.  In the path of experiments with altered injection pressure (200 to 280 Bar), the influence is seeming that the injection pressure 260 bar and compression ratio 20, where the BTE is higher by 4.11% and emission is found to reduce at 100% load as compared to conventional diesel fuel. This examination has been accomplished on a VCRE to study emission and performance characteristics consuming unconventional biofuel blend and the outcomes have been equated with diesel.

Keywords: Diesel engine, Injection pressure, Turpentine oil, Jatropha Biodiesel.