Effects of the Addition of Coconut Shell Oil on Diesel Engine Performance: An Experimental Study

Agung Nugroho, Fajrin Lumela, Rita Dwi Ratnani


Biodiesel is one of the efforts to reduce dependence on fuel oil developed as an environmentally friendly alternative fuel in Indonesia. The addition of coconut shell oil will change the biodiesel properties and engine performance. This study aims to determine the physical properties and performance of fuel in diesel engines due to the addition of coconut shell oil. Several methods were applied to test the physical properties of biodiesel, namely: viscosity, density, cetane number, and calorific value. Meanwhile, the parameters for engine performance testing include torque, power, and specific fuel consumption. Biodiesels used were CS-20 and CS-40 for physical properties tests, and CS-10, CS-15, and CS-20 for engine performance tests. The results found that CS-20 had density of 842 kg/m3, kinematic viscosity of 3.958 mm2/s, cetane number of 62.4, flash point of 305.06°C, and heating value of 43,681.72 kJ/kg. For CS-40, the density was 867 kg/m3, the kinematic viscosity was 1.773 mm2, and the calorific value was 43,390.74 kJ/kg. Based on the results of the diesel engine performance test, the highest torque value was 31.487 Nm on Dexlite at 967 rpm rotation with a mass of 9.51 kg, while the highest power was 4.021 kW on Dexlite at 1752 rpm rotation and torque of 21.919 Nm. The best specific fuel consumption on Dexlite at 3563 rpm rotation used 0.527 liters/kWh. In conclusion, the addition of coconut shell oil to Dexlite reduces energy as the calorific value decreases. Furthermore, it is proven that due to the addition of coconut shell oil, the engine performance is decreasing.


biodiesel, coconut shell, pyrolysis, torque, power

Full Text:



I. Aziz, “Uji performance mesin diesel menggunakan biodiesel dari minyak goreng bekas” (Performance test of diesel engines using biodiesel from used cooking oil), J. Kim. Val., 2010, [Online]. Available on: http://journal.uinjkt.ac.id/index.php/valensi/article/view/241.

T. Turmizi, “Uji performansi mesin yanmar TS 50 menggunakan bahan bakar biodiesel dari minyak kepayang (pangium edule)” (Performance test of the TS 50 yanmar engine using biodiesel fuel from kepayang oil (pangium edule)), J. POLYMESIN, vol. 14, no. 2, p. 2. 28, 2017, doi: 10.30811/jpl.v14i2.340.

A. Y. Pradhana and L. Trivana, “Proses Pembuatan Asap Cair Tempurung Kelapa dan Pemanfaatannya” (The Process of Making Coconut Shell Liquid Smoke and Its Utilization), Warta Penelitian Dan Pengembangan Tanaman .... 2018.

S. Agrawal, A. Kaur, and K. Taneja, "A Comprehensive Review of Benzo Alpha Pyrene (B[A]P) Toxicology," Res. J. Pharm. Biol. Chem. Sci., vol. 9, p. 1669. 1049–1058, Jul 2018.

K. Ridhuan, D. Irawan, and R. Inthifawzi, “Proses pembakaran pirolisis dengan jenis biomassa dan karakteristik asap cair yang dihasilkan” (Pyrolysis combustion process with biomass type and resulting liquid smoke characteristics), Turbo: Journal of Study Programs .... scholar.archive.org, 2019, [Online]. Available on: https://scholar.archive.org/work/osylkoeulnaellzaresvavkmum/access/wayback/https://ojs.ummetro.ac.id/index.php/turbo/article/download/924/pdf.

R. Zulhardi, F. Restuhadi, and Y. Zalfiatri, "The Addition of Methanol in Making Biodiesel from Waste Cooking Oil with Ash Catalyst," Ur, vol. 5, p. 5. 1–10, 2018.

M. H. Razali and M. R.M. Dris, "Biodiesel Production From Waste Cooking Oil Through Transesterification Reaction Using Calcium Ethoxide Catalyst," Energy Green Technol. Dir., vol. 62, no. 04, p. 1669. 4–7, 2015, [Online]. Available on: http://www.academia.edu/317161/Biodiesel_Production_From_Waste_Cooking_Oil_Through_Transesterification_Reaction_Using_Calsium_Ethoxide_Catalyst.

K. Vinukumar, A. Azhagurajan, S.C. Vettivel, and ..., "Biodiesel with nano additives from coconut shell for decreasing emissions in diesel engines," Fuel, 2018, [Online]. Available on: https://www.sciencedirect.com/science/article/pii/S0016236118303120.

K. D. L. F. Lestari, R. D. Ratnani, Suwardiyono, and N. Kholis, “Pengaruh waktu dan suhu pembuatan karbon aktif dari tempurung kelapa sebagai upaya pemanfaatan limbah dengan suhu tinggi secara pirolisis” (The effect of the time and temperature of making activated carbon from coconut shells as an effort to utilize high-temperature waste by pyrolysis), J. Inov. Tech. Kim., vol. 2, no. 1, p. 1. 32–38, 2017.

R. Dwi Ratnani, H. Hadiyanto, W. Widiyanto, and M. Mel, "Pyrolysis of water hyacinth [Eichhornia crassipes (Mart.) Solms] for liquid smoke production," E3S Web Conf., vol. 226, p. 1679. 1–5, 2021, doi: 10.1051/e3sconf/202122600038.

A. Nugroho, N. Sinaga, and I. Haryanto, "Performance of a compression ignition engine four strokes four cylinders on dual fuel (diesel-LPG)," in AIP Conference Proceedings, Sep 2018, vol. 2014, doi: 10.1063/1.5054570.

Y. W. Mirzayanti, E. Ningsih, Z. Lillahulhaq, and ..., “Pemanfaatan Tempurung Kelapa sebagai Katalis pada Proses Konversi Minyak Curah Menjadi Biodiesel” (Utilization of Coconut Shells as Catalysts in the Process of Converting Bulk Oil into Biodiesel), J. Res. ..., 2020, [Online]. Available on: https://www.journal.unusida.ac.id/index.php/jrt/article/view/351.

DOI: http://dx.doi.org/10.30811/jpl.v20i2.2847


  • There are currently no refbacks.

Add comment

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.





Lisensi Creative Commons

Ciptaan disebarluaskan di bawah Lisensi Creative Commons Atribusi-BerbagiSerupa 4.0 Internasional.


Mailing Address:

Politeknik Negeri Lhokseumawe

Jl. Banda Aceh-Medan
Km. 280,3, Buketrata, Mesjid Punteut, Blang Mangat,
Kota Lhokseumawe, 24301

Propinsi Aceh,