Performance, smoke characteristic and economics of pre-heated used vegetable oil utilization in Philippine public utility jeepneys

• Main Authors: Biona, Jose Bienvenido Manuel M., Licauco, J.
• Format: text
• Published: Animo Repository 2008
• Subjects: Vegetable oils as fuel; Mechanical Engineering
• Online Access: https://animorepository.dlsu.edu.ph/faculty_research/6713
• Institution: De La Salle University

An experimental investigation has been carried out to analyze the performance of a compression ignition engine fueled with pre-heated waste cooking oil and its corresponding effects on the economics when used in public utility jeepneys relative to mineral diesel. Oil pre-heating in the experiments to reduce the oils viscosity is provided by a heat exchanger utilizing waste heat from the engines cooling system. The performance parameters evaluated were brake specic fuel consumption (BSFC) and smoke opacity. Fuel mileage was simulated by instantaneous modeling utilizing public utility jeepney drive cycles from major routes in Metro Manila. Results indicated that it resulted in minimal reduction in power. Average power drop across the various operational points was recorded at5.8%. The average BSFC is higher by 19% while its effect on public utility jeepneys fuel mileage is much lower at8.5% reduction. With the lower cost of waste cooking oil, its use could cut down public utility jeepney fuel expenses by 28.5% on the average. The savings provide a waste cooking oil pre-heating kit loan payout period between 5 and 15 months. It was also found to reduce smoke opacity by 54%. Pre-heated waste cooking oil has a good potential for use in public utility jeepneys in Metro Manila.