The Rolls-Royce C26:33 marine gas engine is a new natural gas powered engine launched in 2010, based on the C25:33 marine diesel engine. The C26:33 marine gas engine has been identified as an engine with interesting market potential for ship propulsion as a variable speed - variable load engine, with low emissions, compared to liquid fuelled engines, being the key selling point. The C26:33 marine gas engine will in this paper be described with design philosophy and qualities as follows: Maximising profitability through optimising swept volume of the engine, i.e. recommending an increase of bore from current diameter 250 mm to diameter 260 mm. The increase leads to an increased cylinder volume from 16.2 litres to 17.5 litres and will be an ample resource to either increased power without increase in break mean effective pressure, or to use as a margin for reduced emissions or indeed for improved response. The decision to develop the C25:33 platform for gaseous fuels, implied the use of experience and technology from the K- and BV-type gas engine platforms. Improved responsiveness of the engine in order to get propulsion engine certification as well as focussing on reduced hydrocarbon emission through exploring optimisation of our current mechanical gas control and admission concept The C26:33 marine gas engine is designed to meet both redundancy and response requirements for marine generating sets and single engine propulsion applications. The C26:33 marine gas engine is designed to be able to run as a propulsion engine at variable speed when connected to a controllable pitch propeller. When the propeller thrust requirement is low, the propeller speed may then be reduced, effectively reducing zero pitch loss.
Development of the Rolls-Royce C26:33 marine gas engine series
2010
10 Seiten, 8 Bilder, 1 Tabelle, 10 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
Rolls- Royce marine propulsion engine.
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Rolls-Royce marine propulsion engine
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