Propulsion – Page 81
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NewsEmulsified light distillate fuel for low-NOx large engines
Anders Andreasen, senior research engineer at MAN Diesel & Turbo in Denmark, describes how emulsifier development enables water-emulsified light distillate fuel for reducing nitrous oxide emissions in large marine engines.
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NewsMix of marques for bulker record-breakers
An emergent fleet of ore carriers of record-breaking capacity provides references for electronically-controlled ‘cathedral’ engine designs originating from the two main fountainheads of two-stroke diesel technology in Europe, writes David Tinsley.
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NewsChanges of course in boxship power
Efficiency optimisation trends in the containership sector, prompting a shift to lower vessel speeds, have fostered new solutions to powering arrangements and hull design based on the use of larger propellers and machinery with slower running speeds, writes David Tinsley.
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NewsWärtsilä move widens choice in mid-size engine market
Through a major initiative to swell its range of low-speed, two-stroke marine diesels, Wärtsilä is set to provide owners, shipyards and designers with greater choice in the mid-size engine category, writes David Tinsley.
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NewsZF on a roll with several large contracts
Friedrichshafen-based ZF Marine, in conjunction with Dutch company HRP (now ZF Marine Krimpen) has secured a contract with Aberdeen-based global shipping and energy firm, the Craig Group, to supply retractable azimuth thrusters for four 50m stand-by type vessels.
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NewsAvoiding the slippery slope to lubricant pollution
Environmental lobby groups are pressing the shipping industry, and its regulators, to move away from traditional oil-based lubricants which are causing significant harm to the global marine environment.
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NewsThe return of coal-fired steam ship propulsion
A new type of steam engine has been developed in the USA that could see coal - or oil - fired steam power returning to the sea, writes Dag Pike.
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NewsHigh speed engines bring emissions and cost benefits
Demands for higher efficiency, lower emissions and fuel restrictions are prompting designers to look at high speed diesel-based prime mover options, by Dag Pike.
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NewsDual-fuel technology meets owners’ needs
Concerns over the extent and pace at which LNG will become obtainable as a marine fuel, and shortcomings in the international bunkering network, make dual-fuel (DF) machinery rather than pure gas engines the favoured choice for many owners looking to use natural gas fuel, writes David Tinsley.
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NewsLPG options for two-stroke engines
All electronically-controlled ME engines in MAN’s two-stroke range are available as ME-GI dual-fuel versions, incorporating high pressure gas injection arrangements, writes David Tinsley.
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NewsNorway encourages gas propulsion solutions
Norway’s environmental strategy has provided a fillip to the uptake of gas-fuelled machinery in the marine sector, writes David Tinsley.
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Korean engine builder consolidates gas experience
Korea’s increasing endeavours in the field of engine technology, complementing its considerable stance as a producer of engines for the marine and power generation markets, are encapsulated in the rapid extension of the HiMSEN portfolio from Hyundai Heavy Industries’ Engine & Machinery Division(HHI-EMD), writes David Tinsley.
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NewsNew-generation thrusters put to work on Norwegian ferry
Thruster manufacturer Brunvoll has released details of the first propulsion application for its azimuth rim driven thrusters, on a Norwegian ferry operated by Fjord1 MRF.
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NewsRegular maintenance is key to more uptime and lower costs
Bill Mossey, Corporate Manager Pacific Power Products, MTU Detroit Diesel, outlines the company’s approach to preventive maintenance of high speed diesel engines.
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NewsSailing towards IMO Tier 3
In order to meet future emission limits for marine engines with respect to nitrogen oxides (NOx) and sulphur oxides (SOx), engine manufacturers have been developing a number of solutions. This paper from MAN Diesel sets out the options for medium-speed diesel engines.
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NewsTurbochargers for optimised performance
The latest technology from turbochargers manufacturers is timed to meet a new era of low engine-emissions and low fuel-consumption. Mark Langdon reviews the options.
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NewsCummins power remains popular in SE Asia
The French have long been noted for their marriage of art and design, writes Alan Haig-Brown. The latest design for a fast support intervention vessel (FSIV) demonstrates this once again.
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NewsCummins power for smaller US liftboats
Having recently delivered a lift boat with massive 97m legs, naval architect firm A. K. Suda is currently overseeing the construction of two of its latest designs, writes Alan Haig-Brown.
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NewsSplit bearings prevent ship layovers
UK company Revolvo says that its split roller bearings can prevent unplanned layovers resulting from bearing failures in marine shaft propulsion systems.
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NewsWärtsilä capitalises on buoyant Mid East market
Boiler servicing and modification business is booming in the Gulf, according to Wärtsilä Dubai boss, Ad J.W. Bertens.
