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Math. Comput. Appl. 2006, 11(3), 205-214; doi:10.3390/mca11020205

Prediction of Performance and Smoke Emission Using Artificial Neural Network in a Diesel Engine

1
Department of Automotive, Karabuk Vocational College, Zonguldak Karaelmas University, Karabuk, Turkey
2
Department of Mechanical Education, Technical Education Faculty, Pamukkale University, Kinikli, Denizli, Turkey
3
Department of Mechanical Education, Technical Education Faculty, Zonguldak Karaelmas University, Karabuk, Turkey
4
Department of Mechanical Engineering, Engineering Faculty, Osmangazi University, Bati Meselik, Eskisehir, Turkey
*
Author to whom correspondence should be addressed.
Published: 1 December 2006
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Abstract

The fuel injection pressure is one of the significant operating parameters affects atomization of fuel and mixture formation; therefore, it determines the performance and emissions of a diesel engine. Increasing the fuel injection pressure decrease the particle diameter and caused the diesel fuel spray to vaporize quickly. However, with decreasing fuel particles their inertia will also decrease and for this reason fuel can not penetrate deeply into the combustion chamber. In this study, artificial neural-networks (ANNs) are used to determine the effects of injection pressure on smoke emissions and engine performance in a diesel engine. Experimental studies were used to obtain training and test data. Injection pressure was changed from 100bar to 300bar in experiment (standard injection pressure of test engine is 150bar). Injection pressure and engine speed have been used as the input layer; smoke emission, engine torque and specific fuel consumption have been used as the output layer. Two different training algorithms were studied. The best results were obtained from Levenberg-Marquardt (LM) and Scaled Conjugate gradient (SCG) algorithms with 11 neurons. However, The LM algorithm is faster than the SCG algorithm, and its error values are smaller than those of the SCGs. For the torque with LM algorithm, fraction of variance (R2) and mean absolute percentage error (MAPE) were found to be 0.9927 and 7.2108%, respectively. Similarly, for the specific fuel consumption (SFC), R2 and MAPE were calculated as 0.9872 and 6.0261%, respectively. For the torque with SCG algorithm, R2 and MAPE were found to be 0.9879 and 9.0026%, respectively. Similarly, for the specific fuel consumption (SFC), R2 and MAPE were calculated as 0.9793 and 8.7974%, respectively. So, these ANN predicted results can be considered within acceptable limits and the results show good agreement between predicted and experimental values.
Keywords: Artificial neural-network; Diesel engine; Injection pressure Artificial neural-network; Diesel engine; Injection pressure
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Sekmen, Y.; Gölcü, M.; Erduranlı, P.; Pancar, Y. Prediction of Performance and Smoke Emission Using Artificial Neural Network in a Diesel Engine. Math. Comput. Appl. 2006, 11, 205-214.

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Math. Comput. Appl. EISSN 2297-8747 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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