Study of Energy Efficiency for Single Cylinder Small Engine in Thailand

Abstract

At present in Thailand, single cylinder small engines have been used generally for agriculture. This leads to large amount of fuel import while the price of fossil fuels rise continuously. The Department of Alternative Energy Development and Eff iciency, Ministry of Energy, decided to draft the minimum energy eff iciency standard for small engines by studying and testing specif ic fuel consumption of gasoline and diesel engines, based on the JIS B 8017 and TIS 787-2551 standards, respectively. Results of the experiment revealed that specif ic fuel consumption of gasoline engine was higher than diesel engines between 39% and 49% at equivalent energy supply. However, the limitation of maximum and minimum energy eff iciency for gasoline engine is still necessary in order to enhance energy eff iciency of small engines manufactured in Thailand