Performance and emission characteristics of a CI engine operating on pine oil-n-butanol-diesel blends
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Date
2017-08
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
In the present investigation, pine oil and n-butanol blends are used as an alternative fuel for diesel engine. The pine oil is non-edible forest based less viscous oil, which is produced by steam distillation of pine resin and pine needles. Pine oil is rich in high energy content and the production of pine oil does not affect main cultivation land and edible supply. n-butanol is a primary alcohol which has better fuel properties like energy content, kinematic viscosity and cold flow properties compared to methanol and ethanol. In the present study n-butanol is used because of its higher oxygen content and cold flow properties. Diesel fuel is taken as reference fuel in present study.
The measured fuel properties of test fuels are found comparable with the diesel fuel. Performance and emission characteristics of a single cylinder, four stroke diesel engine of rated 1500 rpm, are investigated at different engine loads. The engine performance parameters such as fuel consumption and brake specific fuel consumption are decreased with addition of pine oil, however, average brake power and brake thermal efficiency has been increased. Exhaust gas temperature is found higher, while smoke emissions are improved for pine oil-diesel blends, as compared to diesel. When n-butanol is added to pine oil-diesel blends fuel consumption rate, BSFC, average brake power and brake thermal efficiency is increased. Exhaust gas temperature is reported higher at higher percentage of n-butanol, while smoke density reduced significantly for pine oil-n-butanoldiesel blends. From the present investigation, P20B30 fuel is found to give optimum engine performance and emission characteristics.
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