The Artificial Neural Network: A Tool For Nox Emission Estimation From Marine Engine

• Autorzy: Kowalski J.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the preliminary investigations of nitric oxides (NOx) estimation from marine two-stroke engines. The Annex VI to Marpol Convention enforce to ship-owners necessity of periodical direct measurements of the NOx emission from the ship engines. It is very expensive procedure but with a low accuracy. Presented investigations show the possibility of estimation the NOx emission without direct measurements but using the artificial neural network (ANN). The paper presents method of choice the input data influenced on NOx emission and configuration of ANN and effects of calculations. The input data poses 15 parameters of engine working, influencing on NOx emission. The output data, necessary to learning the network, were NOx concentration in engine exhaust gases. We take into account two types of ANN; the 3-layer perceptron (MLP) with number of neurons in the hidden layer from 10 to 20 and the radial basis function neural network (RBF) with number of neurons in the hidden layer from 10 to 80. The input, validation and verification data was obtained from laboratory tests. After procedure of network configuration, the chosen ANN was learned by back propagation and conjugate gradient methods. During this operation the weights of neurons were changed to minimize the root mean square error. We obtained four ANN’s, which allow us to estimate the NOx emission from laboratory engine with accuracy, comparable with Annex VI regulations.

Słowa kluczowe

EN

emission; NOx; artificial neural network; Marpol Convention; marine diesel engine

• Wydawca: Faculty of Ocean Engineering and Ship Technology, Gdańsk University of Technology
• Czasopismo: Journal of Polish CIMAC
• Rocznik: 2008
• Tom: Vol. 3, no 2
• Strony: 9--13
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Kowalski J.

• Gdynia Maritime University Department of Engineering Sciences, Morska Street 81-87, 81-225 Gdynia, Poland, tel.[phone], fax: [phone],

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