A NOVEL STEADY-STATE TEST CYCLE FOR EMISSIONS CHARACTERISATION OF ALIGHT-DUTY DIESEL ENGINE FUELLED WITH BIODIESEL

摘要

The environmental impacts of diesel emissions coupled with the imminent depletion of petroleum, has led to extensive research efforts on alternative fuels. Biodiesel has emerged as the favoured alternative fuel for diesel engine. With this in mind, comprehensive emissions mapping would be required to ascertain the effectiveness of biodiesel in emissions reduction. In this experimental study, a modified steady-state heavy-duty diesel engine test cycle was used. Test point reduction was proposed to reduce the time required within an acceptable reduction in accuracy of the test data. Using the reduced test cycle, the effects of biodiesel from palm, soybean and coconut on tailpipe emissions were compared against that of conventional diesel.