The model of combustion process in the marine 4-stroke engine for exhaust gas composition assessment

• Autorzy: Kowalski J.

Identyfikatory

DOI

10.19206/CE-2016-208

Warianty tytułu

PL

Model procesu spalania w 4-suwowym silniku okrętowym do oceny składu spalin

• Języki publikacji: EN PL

Abstrakty

EN

The paper presents the model of combustion process in the marine, turbocharged, 4-stroke and Diesel engine. The main target of modeling is the assessment of the exhaust gas composition. Presented multi-zone, 3-D model of combustion process consists of the following sub-models of processes: the fuel injection, the brake-up and the evaporation of fuel and the turbulence flow and the heat transfer phenomena. Presented model basis on the 3Z-ECFM mechanism of combustion and the initial and boundary conditions collected during direct measurements. The positive validation of the calculation results are obtained for mean and maximum value of the combustion pressure and values of oxygen and nitric oxides fractions in the exhaust gas. Unfortunately, fractions of carbon compounds in the exhaust gas are not properly calculated.

PL

Praca prezentuje model procesu spalania 4-suwowego, turbodoładowanego, okrętowego silnika o zapłonie samoczynnym. Celem modelowania była ocena składu emitowanych spalin. Model ten to wielostrefowy, trójwymiarowy model spalania, obejmujący proces wtrysku, rozpylania i parowania paliwa wraz z towarzyszącymi im zjawiskami turbulentnego przepływu i wymiany ciepła. Model oparty jest na mechanizmie procesu spalania 3Z-ECFM oraz warunkach początkowych i brzegowych, zebranych podczas pomiarów bezpośrednich. Uzyskano pozytywne wyniki walidacji w stosunku do średniego i maksymalnego ciśnienia spalania oraz zawartości tlenu i tlenków azotu w spalinach. Nie uzyskano poprawnych wyników modelowania dla udziałów związków węgla w spalinach.

Słowa kluczowe

EN

marine diesel engine; model; combustion process; exhaust gas composition; computational fluid dynamics

PL

okrętowy silnik spalinowy; model; proces spalania; skład spalin; komputerowa dynamika płynów

• Wydawca: Polskie Towarzystwo Naukowe Silników Spalinowych
• Czasopismo: Combustion Engines
• Rocznik: 2016
• Tom: R. 55, nr 2
• Strony: 60--69
• Opis fizyczny: Bibliogr. 32 poz., wykr.

Twórcy

autor

Kowalski J.

• Faculty of Marine Engineering at Gdynia Maritime University

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.