The characteristics of performance and exhaust emissions of a diesel engine using a biodiesel with antioxidants
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Updated: Jun 22, 2026

Original Experimental Approach for Assessing Transport Fuel Stability
Published on: October 21, 2016
1School of Mechanical and Automotive Engineering, Kunsan National University, Gunsan, Jeonbuk, Republic of Korea. khryu@kunsan.ac.kr
Abstract:
The aim of this study is to investigate the effects of antioxidants on the oxidation stability of biodiesel fuel, the engine performance and the exhaust emissions of a diesel engine. Biodiesel fuel used in the study was derived from soybean oil. The results show that the efficiency of antioxidants is in the order TBHQ>PrG>BHA>BHT>alpha-tocopherol. The oxidative stability of biodiesel fuel attained the 6-h quality standard with 100 ppm TBHQ and with 300 ppm PrG in biodiesel fuel. Combustion characteristics and exhaust emissions in diesel engine were not influenced by the addition of antioxidants in biodiesel fuel. The BSFC of biodiesel fuel with antioxidants decreased more than that of biodiesel fuel without antioxidants, but no trends were observed according to the type or amount of antioxidant. Antioxidants had few effects on the exhaust emissions of a diesel engine running on biodiesel.
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