The Effects CNG Injection Timing on Engine Performance and Emissions Of A Diesel Dual Fuel Engine

Moch. Aziz Kurniawan, Dori Yuvenda, Bambang Sudarmanta

Abstract


Sequential combustion process on diesel dual fuel engine with compressed natural gas (CNG) fuel was complex. The problems of diesel dual fuel with CNG gas are reduced thermal efficiency and resulting in high carbon monoxide (CO) and unburned hydrocarbon (HC) emissions. The right setting between combustion air, diesel pilot fuel, and CNG gas fuel can improvement the performance and emissions. The experiment was conducted with diesel fuel conventional and dual fuel mode with CNG fuel in a single cylinder, four strokes, constant speed (1500 rpm) diesel engine type diamond DI 800. Performance parameters such as thermal efficiency and specific fuel consumption (SFC), emissions such as CO, HC, and smoke density are determined at five starts of injection timing (SOI) CNG of 700CA, 900CA, 1100CA, 1300CA, dan 1500CA ATDC with ECU programmable of Vemstune software. The results indicated that retarded CNG injection timings improved engine performance and emissions diesel dual fuel. Start of CNG injection timing optimization at 1300CA ATDC with increased thermal efficiency 14,35% and decreased specific fuel consumption (SFC) 8,83 % . in addition, it decreased CO emissions 21,35%, HC emissions 17,93%, and PM emissions lower 34,98%. However, engine performance diesel dual fuel lower than a conventional diesel engine.

Keywords


Diesel dual fuel; the start of CNG injection timing; engine performance; emissions

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References


M. Y. E. Selim, “Pressure-time characteristics in diesel engine fueled with natural gas,” Renew. energy, vol. 22, no. 4, pp. 473–489, 2001.

F. Königsson, Advancing the Limits of Dual Fuel Combustion, vol. 14, no. 2012. 2012.

M. Y. E. Selim, “Sensitivity of dual fuel engine combustion and knocking limits to gaseous fuel composition,” Energy Convers. Manag., vol. 45, no. 3, pp. 411–425, 2004.

K. Wannatong, N. Akarapanyavit, and S. Siengsanorh, “Combustion and Knock Characteristics of Natural Gas Diesel Dual Fuel Engine Combustion and Knock Characteristics of Natural Gas Diesel Dual Fuel Engine,” no. October, 2017.

C. Paper, D. Yuvenda, S. Resmi, and U. Negeri, “KARAKTERISASI PERFORMA MESIN SISTEM DUAL FUEL MENGGUNAKAN PRESSURE REDUCER ADAPTIVE ...,” no. April 2016, 2015.

B. Sudarmanta, “THE PERFORMANCE OF FOSSIL DIESEL-SYN GAS DUAL FUEL COMPRESSION IGNITION ENGINE FOR 3 KW.”

A. Arif et al., “Karakterisasi Performa Mesin Diesel Dual Fuel Solar-Cng Tipe Lpig Dengan Pengaturan,” 2015, no. 2013, pp. 1–8.

D. Yoko and B. Sudarmanta, “Studi Eksperimen Unjuk Kerja Mesin Diesel Menggunakan Sistem Dual Fuel Solar - Gas CNG dengan Variasi Tekanan Injeksi Gas dan Derajat Waktu Injeksi,” 2016, vol. 5, no. 2, pp. 604–609.

B. Yang, X. Wei, C. Xi, Y. Liu, K. Zeng, and M. C. Lai, “Experimental study of the effects of natural gas injection timing on the combustion performance and emissions of a turbocharged common rail dual-fuel engine,” Energy Convers. Manag., vol. 87, pp. 297–304, 2014.

B. Yang, C. Xi, X. Wei, K. Zeng, and M. C. Lai, “Parametric investigation of natural gas port injection and diesel pilot injection on the combustion and emissions of a turbocharged common rail dual-fuel engine at low load,” Appl. Energy, vol. 143, pp. 130–137, 2015.

D. Yuvenda, B. Sudarmanta, and E. Alwi, “Analisis Kekuatan Pegas Pressure Reducer Sebagai Penurunan Tekanan Pada Mesin Duel Fuel,” vol. 17, no. 2, 2017.




DOI: http://dx.doi.org/10.12962/j20882033.v30i2.4996

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