2-Stroke and 4-Stroke – Page 61
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NewsWärtsilä strengthens hand in hotly-contested sector
Representing a further major stage in the evolution of its 320mm-bore medium-speed engine, Wartsila’s popular W32 series has been augmented by new models offering a 16% power advance over the earlier engine design.
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NewsSteep rise projected for dual-fuel applications
Implicit in the recent news that Wärtsilä dual-fuel, medium-speed engines have topped 3million running hours in marine and landside applications, the technology has attracted wide endorsement as a viable solution to environmental and economic challenges facing the respective markets. In fact, DF capability is spearheading the company’s technological drive in ...
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NewsHyundai expands home-grown engine range
In a relentless drive to extend the market reach and brand power of its home-grown HiMSEN four-stroke range, Hyundai Heavy Industries’ Engine & Machinery Division (HHI-EMD) has introduced more powerful variants of its smallest medium-speed design, the H17/28.
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NewsMAN sets up dedicated emissions test centre
At the Augsburg fountainhead of its medium-speed engine technology, MAN Diesel & Turbo has this year opened a new emissions test facility.
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NewsBelgium’s independent maker shows resilience
Independent producer of medium-speed engines Anglo Belgian Corporation(ABC) has provided the propulsive power for a new generation of shortsea cargo vessels commissioned by the UK-based company Union Transport.
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Japanese provide new options in gas engines
As a pointer to Kawasaki Heavy Industries’ plans to make its Green Gas Engine series available to the marine market, two 12-cylinder versions of the spark-ignited, medium-speed design have been written into the specification for K Line’s conceptual, LNG-fuelled car carrier.
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NewsGood vibrations with cushioned mountings
Trelleborg Industrial AVS (TIAVS) designs and manufactures mountings and isolation solutions for marine machinery on vessels of every type, and describes some particular products here.
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NewsDesign software aids calculation of shaft vibrations
Dutch company Machine Support, part of the SKF group, says that during the period 1998-2006, one third of ship problems were machinery-related, and a significant proportion of these equipment failures resulted from vibration.
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Well-designed silencers to deal with low frequency noise
Danish company Silentor reports success with a project in which an initial order for five silencers grew to encompass the delivery of 84 silencer units in total.
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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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NewsJapanese marque puts more resources into R&D
Complementing its production of low-speed machinery under licence from Wärtsilä, with whom it has a history of collaboration, Mitsubishi Heavy Industries’ sustained in-house development of the UE range ensures that European designs do not completely dominate the world market for large, two-stroke marine engines, writes David Tinsley.
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NewsNew generation quickly extends market reach
Regarded as the most significant development in the MAN low-speed portfolio since the introduction of the ME electronically-controlled generation of engines, the release of the ultra long stroke G-type has proved timely and apposite to market needs, writes David Tinsley.
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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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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.
