Assessment of large bore marine engine cylinder pressures to estimate nox emission

• Autorzy: Borkowski T.
• Języki publikacji: EN

Abstrakty

EN

High demand to improve exhaust gas emission characteristics while keeping fuel economy requires a new technology for engine control. One of the methods used to meet these requirements is a convenient and real-time cylinder pressure monitoring. The final aim is balanced combustion and reliable, emission-compliant operation. Excluding the direct exhaust emission measurement, easily accessible indicators come from the in-cylinder pressure combustion data. The aim of this paper is to establish combustion model variables for use in transient condition analysis. The model should be able to predict cylinder-averaged quantities such as NOx emission. To overcome the exhaust analyzers problem, a set of engine operating conditions was tested at steady state to provide a wide range of combustion conditions with their associated emissions. Multi-zone models are the simplest and most suitable to observe the effects of empirical variations in the engine operating parameters. The obtained results are unlikely to be as detailed as those of a good CFD model, but the ease of changing characteristics makes such models useful for cheap and easy means of analyzing. Successful prediction of the NOx emission in engines varies in operating conditions. The NOx emission levels for different operating conditions are calculated for large bore, slow speed marine engine. The agreement between calculated and measured results is discussed. Cylinder pressure based model has the broad ability to predict NOx emissions in steady state.

Słowa kluczowe

EN

marine diesel engine; internal combustion engines; engine maintenance; air pollution

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2006
• Tom: Vol. 13, No. 2
• Strony: 43--50
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Borkowski T.

• Maritime University of Szczecin, Engineering Department 1-2 Waly Chrobrego, 70-500 Szczecin, Poland tel.: [phone], fax: [phone],

Bibliografia

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