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The Investigation of a High Proportion of N-butanol Blended Fuels on Ignition Timing

Sing-Lin Chen1, Hsueh-Cheng Yang1, and P. Frank Pai2
1.Graduate Institute of Vehicle Engineering, National Changhua University of Education, Number 1, Jin-De Road, Changhua, 500, Taiwan
2.Department of Mechanical and Aerospace Engineering, University of Missouri-Columbia, Columbia, MO 65211
Abstract—The paper is to investigate the influences between the ignition timing and the high proportion of n-butanol-gasoline blends for a four-cylinder spark ignition engine. The experiment uses n-butanol-gasoline blended fuels of higher proportion (B50, B60) and pure gasoline to investigate the influence of engine performance, fuel consumption and pollutant emissions by adjusting the ignition timing and engine speed of a four-cylinder spark ignition engine. The experimental results show that the engine using n-butanol-gasoline blended fuels tends to lean air-fuel ratio and the torque output increases compared to the engine using pure gasoline. The BSFC was slightly increased at low speed, but the engine at high speed, the BSFC is decreased. CO and HC emissions can be effectively reduced, but CO2 emissions increase and that NOX emission depends on the engine operating condition. On the other hand, advancing the ignition timing which can increase the engine torque and obtain better BSFC; retarding the ignition timing which can reduce exhaust emissions of HC and NOX. Finally, the experimental results showed that the CO and CO2 was mainly influenced by λ value.

Index Terms—n-butanol, Ignition timing, Blended fuel, emissions

Cite:Sing-Lin Chen, Hsueh-Cheng Yang, and P. Frank Pai, "The Investigation of a High Proportion of N-butanol Blended Fuels on Ignition Timing," International Journal of Electrical Energy, Vol. 7, No. 1, pp. 8-14, June 2019. doi: 10.18178/ijoee.7.1.8-14

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