Propulsion – Page 78
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NewsPiston seals for high-viscosity cylinder oils
The RDPS Alpha piston sealing system has been developed to counter problems resulting from the effects of emission regulation and slow steaming on cylinder lubrication, as described by Ernie Terry of Marine Sealing Services, UK.
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NewsCat goes for pure gas genset power
At the recent SMM exhibition in Hamburg, Caterpillar Marine Power Systems announced that it is currently developing a high speed gas engine based on the 3500 engine platform.
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NewsA shorter route to greater profits
Wärtsilä’s so-called ‘new generation’ – the Generation X series – of two-stroke engines was introduced in May 2011, with the aim of significantly contributing to lowering marine engine fuel costs and improving environmental performance.
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NewsProgress on gas-fuelled two-strokes
The pressure to find alternative fuels, driven by both emissions legislation and the resulting commercial pressures that threaten to drive up the cost of low-sulphur fuel oils, is impacting on the low speed engine market.
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NewsSuccess for Norwegian electro specialist
Norwegian Electric Systems says that since it was established in October 2009, it has achieved a sales turnover close to 1 billion NOK.
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NewsNew high-speed propulsion and gas-fuelled genset engines added to Cat high-speed range
Caterpillar Marine Power Systems has announced a new high-speed propulsion engine based on its 3516 platform, but optimised to deliver clean-burn combustion along with an up to 15% power increase in its commercial ratings.
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NewsVoith adds swing-out capability to rim-drive thruster
At the recent SMM show in Hamburg, German manufacturer Voith featured a new version of its rim drive thruster - a retractable azimuthing unit.
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NewsMAN boosts dual-fuel marine offering
MAN is adding a new string to its bow in the dual-fuel stakes through the development of the 35/44DF marine engine, to serve a broad power band in 10 configurations, writes David Tinsley.
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NewsNew propulsor designs target speed and manoeuvrability
Some are still on the drawing board, but a range of new propulsor designs are expanding speed and manoeuvrability limits for high speed vessels, says Wendy Laursen.
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NewsMAN unveils latest cruise power technology
Henrik Segercrantz speaks to MAN Diesel & Turbo about the future of four-stroke propulsion, particularly concerning passenger vessels.
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NewsNo-loss electric drive for Korean ‘green ship’
David Tinsley describes an innovative, Norwegian-developed electric propulsion system ordered by Samsung Heavy Industries as part of a South Korean ‘green ship’ initiative.
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NewsConstant speed versus variable engine speed
A study by MAN Diesel & Turbo compares a diesel mechanical plant with CP propellers operating with constant engine speed with operations at variable engine speed on an offshore vessel. Henrik Segerkrantz explains.
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NewsLubrication dangers of slow steaming
According to Castrol Marine, it is vital to have a choice of different cylinder oils to suit the varying demands of slow steaming and fuel sulphur content.
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NewsAdvanced propeller designs suit slow revving engines
Advanced propeller designs such as the NPT, Kappel and CLT find their worth with ultra slow speed diesel engines, writes Wendy Laursen
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NewsEngine service organisation reports difficult cases
MAN PrimeServ has handled some demanding repair jobs on both two-stroke and four-stroke engines, as discovered on a recent visit by Henrik Segercrantz to MAN PrimeServ’s hub in Hamburg, Germany.
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NewsMAN looks forward to next-generation diesel-electric power
Propulsion requirements for diesel-electric offshore vessels with deeper-water capabilities have come under the microscope at MAN. Henrik Segercrantz reports
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NewsHigh charge air pressure for clean engines
ABB Turbocharging, of Switzerland, recently released for sales and production the first frame size in its A100-L series of high pressure turbochargers for low speed, two-stroke engines.
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NewsTransmissions for specialised applications
Transmission specialist ZF Marine says that it is involved in several specialist applications, supplying, in some cases, thrusters and propellers as well as reduction gearboxes.
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NewsEuropean hybrid tugs are coming to fruition
Tug owners worldwide have long recognised the need to meet future demands for more environmentally acceptable vessels, and Europe is joining the USA in making ‘green’ tug power a reality, writes Jack Gaston.
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NewsConceptual design avoids expensive delays
The importance of conceptual design and pre-engineering in the design of complex systems such as those for propulsion was recently reinforced for Alewijnse Marine Systems when the opening stages of a new contract took considerably longer than was originally anticipated.
