Numerical Comparative Mapping Study to Evaluate Performance of a Dual Sequential Spark Ignition Engine Fuelled with Ethanol and E85

Öz

The effects of ethanol and E85 usages on engine performance characteristics have been numerically investigated at a dual sequential spark ignition engine. The Honda L13A4 i-DSI (Intelligent-Dual Sequential Ignition) engine (intake-exhaust manifold connections, intake-exhaust lines, intake-exhaust valves, cylinder, cylinder head, piston, spark-plugs, throttle etc.) was modeled in Ricardo-Wave software for ethanol and E85 usages taking into account all components related to the engine. In the analysis, engine speeds ranging from 1000 rpm to 6000 rpm with an increment of 500 rpm, throttle angle ranging from 22.5° to 90° with an increment of 2.5°, 10.8:1 compression ratio, 0.9 air-fuel ratio were adjusted. In the 1-D model, performance maps were generated using the data obtained as a result of the analyzes. As a result of the study, E85 has been observed to perform better than ethanol usage for the Honda L13A4 i-DSI that the engine designed for the usage of gasoline.

Anahtar Kelimeler

• Ethanol,E85; 1-D Model; Engine Performance; Engine Mapping; Dual Sequential Ignition

Kaynakça

1. RFA (Renewable Fuels Association). Leading the U.S. ethanol industry. 2016.http://www.ethanolrfa.org/resources/industry/statistics/#1454099103927-61e598f7-7643.
2. Johansen, L. C. R., Hemdal, S. and Denbratt, I. “Comparison of E10 and E85 Spark Ignited Stratified Combustion and Soot Formation.” Fuel, 205, 11-23, 2015.
3. Sarjovaara, T. and Larmi, M. “Dual Fuel Diesel Combustion with an E85 Ethanol/Gasoline Blend.” Fuel, 139, 704-714, 2015.
4. Türköz, N., Erkuş, B., Karamangil, M. İ., Sürmen, A. and Arslanoğlu, N. “Experimental Investigation of the Effect of E85 on Engine Performance and Emissions Under Various Ignition Timings.” Fuel, 115, 826-832, 2014.
5. Sarjovaara, T., Larmi, M. and Vuorinen, V. “Effect of Charge Air Temperature on E85 Dual-Fuel Diesel Combustion.” Fuel, 153, 6-12, 2015.
6. Wang, C., Janssen, A., Prakash, A., Cracknell, R. and Xu, H. “Splash Blended Ethanol in a Spark Ignition Engine–Effect of RON, Octane Sensitivity and Charge Cooling.” Fuel, 196, 21-31, 2017.
7. Huang, Y., Hong, G. and Huang, R. “Investigation to Charge Cooling Effect and Combustion Characteristics of Ethanol Direct Injection in a Gasoline Port Injection Engine.” Applied Energy, 160, 244-254, 2015.
8. Phuangwongtrakul, S., Wechsatol, W., Sethaput, T., Suktang, K. and Wongwises, S. “Experimental Study on Sparking Ignition Engine Performance for Optimal Mixing Ratio of Ethanol–Gasoline Blended Fuels.” Applied Thermal Engineering, 100, 869-879, 2016.

9. Heywood, J. B., Internal Combustion Engine Fundamentals, McGraw-Hill College, 1988.
10. Pulkrabek, W. W. Engineering Fundamentals of the Internal Combustion Engine, Pearson Higher Edition, 2013.