Pengaruh Penambahan Langkah Kerja terhadap Unjuk Kerja Motor Bakar

Chandra Gunawan, Eko Siswanto, Lilis Yuliati

Abstract


The duration of fuel-air diffusion in the 4 stroke combustion engine is relatively short, which is 0.02 seconds at 3000 rpm so that at high rotation the level of homogeneity of the fuel-air mixture becomes low. The addition of steps in a 4 stroke combustion engine to a 6 stroke combustion engine is expected to increase the duration of mass diffusion and temperature in the air-fuel mixture. So that the homogeneity of the air-fuel mixture increase and more expansion power of the combustion results. Engine performance testing by reducing the engine speed of 400 rpm at the initial condition of the throttle valve opening by 30% then the results of the performance of the two motors will be compared. The test results show an increase in power and torque in a 6 stroke combustion engine compared to a 4 stroke combustion engine at the same rotation conditions of 15%. As for the value of the specific fuel consumption effective (SFCe), thermal efficiency, and exhaust gas emissions of Hydrocarbon (HC) 4 stroke fuel is still better.

Keywords


Diffusion; Homogeneity; Combustion Engine; Four Stroke; Six Stroke

Full Text:

PDF

References


SOETIARI, TJ., Bahan Bakar dan Proses-Proses Kimia Pembakaran, Jurusan Mesin, Fakultas Teknik Universitas Brawijaya, Malang, 1990.

EBRAHIMI, R., GHANBARIAN, D., TAYADON, M.R., "Performance of an otto engine with volumetric efficiency", Journal of American Science, v. 6, n. 3, pp. 27-31. 2010.

AHUJA, K., HARISH, A., RAGHAVAN, V., "Experimental study of initial fuel temperature on the burning rates of kerosene pools in cold environment", International Journal of Engineering Research, v. 4, n. 1, pp. 36-39, Jan. 2015.

SHANMUKAM, A., KUMAR, K.S., PRABHU, T.M., "Pre-heating fuel for charge homogeneity to improve combustion", International Journal on Theoretical and Applied Research in Mechanical Engineering, v. 2, n. 1, pp. 87-92. 2013.

BUDIPRASOJO, A., IRAWAN, A., "Engine combustion efficiency and performance of exhaust pipe fuel preheating system", Jurnal Rekayasa Mesin, v. 9, n. 1, pp.1-7. 2018.

BAJULAZ, R., Internal combustion engine, United State Patent No. US 4809511A, 1989.

HAYASAKI, T., OKAMOTO, Y., AMAGAI, K., ARAI, M., “A six stroke DI diesel engine under dual fuel operation”, SAE Paper No. 1999-01-1500, International Fuels and Lubricants Meeting and Expo-sition, 1999.

CONKLIN, J. C., SZYBIST, J. P., “A highly efficient six stroke internal combustion engine cycle with water injection for in cylinder exhaust heat recovery”, Journal Energy Elsevier 35, pp. 1658-1664. 2010.

SEVERINO, J. A., SILVA, A. S., SUSSUSHI, E. M., SANT’ANNA, M. V. S., CUNHA, M. A., BERG-MANN, C. P., GRIZA, S., “Corrosion damages of flow regulation valves for water injection in oil fields”, Journal Engineering Failure Analysis Elsevier 96, pp. 362-373. 2018.

SISWANTO, E., WIDHIYANURIYAWAN, D., WIDODO, A.S., HAMIDI, N., DARMADI, D.B., SUDJITO, "On the performance of six-stroke Single-power combustion engine", JP Journal of Heat and Mass Transfer, v. 14, n. 2. 2017.

SISWANTO, E. Operational method of internal combustion engine using six stroke cycle, Indonesian Patent No. P00201304429, 2013.

KOVAKH, M., Motor Vehicle Engine, MIR Publisher, Moscow, 1979.

LIAKOS, H.H., FOUNTI, M. A., MARKATOS, N.C., "Modeling of Strecthed Natural Gas Diffusion Flames." Applied Mathematical Modelling, pp. 419-435, May. 2000.

PULKRABREK, WILLARD W., Engineering Fundamental of The Internal Combustion Engine, New Jersey: Prentice Hall International Inc, 2004.

RAHMAN, M.M., KHALAF I. HAMADA, MOHAMMED K. MOHAMMED, ROSLI A. BAKAR, M.M. NOOR, & K. KADIRGAMA. 2009. "Numerical Investigation of the In-cylinder Flow Characteristic of Hydrogen Fueled Internal Combustion Engine." International Advanced of Technology Congress (ATCi). Pahang: PWTC. 1-7.




DOI: https://doi.org/10.21776/ub.jrm.2019.010.03.1

Refbacks

  • There are currently no refbacks.


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