Waste Heat Recovery Systems (WHRS) from specialist suppliers are becoming increasingly popular to boost the overall plant efficiency of large container ship propulsion installations, reducing fuel consumption and thus carbon dioxide emissions. This is evidenced by ABB’s recent US$23-million order to supply no less than fourteen new 8,800 TEU ships with their WHRS package.
MSC Container Ship: Photo credit ABB
The first seven post-panamax vessels will be built at Dalian Shipbuilding Industry Co. Ltd., (DSIC) and the other seven vessels at New Times Shipbuilding Co. Ltd., for China International Marine Containers Group Co. and Mediterranean Shipping Co. S.A (MSC). ABB say that their scope of supply includes power turbines with control valves, alternators, reduction gears and dynamic compensators. The package also includes two of their latest generation of turbochargers. The electrical output of the system is 1.65 megawatt (MW).The combination of large main engine size and high onboa... [More]
Tags: Waste Heat Recovery System, WHRS, container ships, slow-speed, marine diesel engine, ABB, contract, MSC, propulsion plant, engine efficiency, fuel saving
The remarkable significance of a new marine diesel technology just announced by Wärtsilä is that the low pressure, dual-fuel (gas/liquid fuel) benefits that are already available to 4-stroke engines, can now be applied to 2-stroke engines as well, thus making the technology available to the broader merchant shipping market.
The test engine: Photo courtesy of Wärtsilä
Wärtsilä, having announced the successful full scale testing on gas of an RT-flex50DF engine, say that the marine industry is already showing significant interest, evidenced by the fact that more than 130 industry executives from 89 leading shipping companies attended the recent introductory event in Trieste, Italy. In his opening speech at the event, Jaakko Eskola, Senior Executive Vice President and President, Wärtsilä Ship Power, stated: “Dual-fuel engine technology is the future; it is a tide that cannot be turned back. Gas is certain to play an increasingly imp... [More]
Fuel saving with cost-effective exhaust gas emissions reduction was recently documented by two American ferry operators who installed the UltraBurn® Combustion Catalyst System in vessels plying routes in the Pacific Northwest. Houston-based Emissions Technology (ETI) provided the system for the main and auxiliary diesel engines of the three public authority ferries.
M/V Guemes Island Ferry: Photo credit CCL Dustin Creviston
Skagit County Ferry Operations Division reported a reduction in black smoke of over 43% and double digit reductions in other emissions aboard their M/V Guemes Island Ferry earlier this year. More recently Pierce County Public Works and Utilities Division recorded fuel cost savings of 32% during a six month working period (ending September 2013) by their ferries M/V Steilacoom II and M/V Christine. How does the system work?Basically the UltraBurn Combustion Catalyst System improves heavy duty diesel engine performance by stimulating a more complete burn th... [More]
The S3 switch (a marketing acronym for ‘Smart Sulphur Switch) is a prototype developed by Denmark’s Insatech in cooperation with O.W. Bunkers, to blend and adjust two fuels (HFO and MDO) to a desired sulphur content enabling monitoring and control of marine diesel engine exhaust gas emissions without fitting expensive scrubber units. The S3 is presently on trial aboard ships belonging to some of this major bunker supplier’s customers in Northern European waters, and commercial production is planned for later this year.
S3 Fuel Switch Skid: Image credit Insatech
Fuel Switching and BlendingOn most modern ships two service tanks are provided: one service tank contains the higher sulphur fuel oil and the other may contain low sulphur fuel to ensure MARPOL Annex VI emission regulations are met. This arrangement will involve a fuel changeover at some point during the ship’s engine operation, normally achieved by means of a three-way valve, and it is at this poin... [More]
The first MaK dual-fuel marine diesel engine has been shipped out of the MaK Rostock, Gerrmany factory, announce Caterpillar Marine Power Systems, destined for the first of a new generation of AIDA cruise ships under construction by Mitsubishi Heavy Industries (MHI) at its Nagasaki Shipyard & Machinery Works.
MaK M 46 DF Marine Diesel Engine: Photo credit: Caterpillar
Upon arrival the new engine will be placed in the hull of the AIDA cruise ship now under construction (due for delivery in March 2015) as the first of two vessels ordered by the Costa Group member company. These luxury 124,500 gross tonnage cruise ships will have accommodation for around 3,300 passengers, and will be the largest ever constructed for AIDA Cruises.With a bore of 460 mm and stroke of 610, the M 46 DF engine is suitable for electric drive propulsion systems as well as mechanical propulsion systems. It has been designed to allow retrofitting of current M 43 C engines (three of which will also power the cr... [More]
A Wärtsilä X40 low speed engine recently passed its Type Approval Test (TAT) in Zhouhai, China, on licensee Yuchai Marine Power’s test bed, verifying that it met all classification society requirements. Sea trials come next and then the new engine will be introduced to the market.
X40 Marine Diesel TAT Ceremony: Photo courtesy of Wärtsilä
This engine, with its 400 mm cylinder bore, a power output in the range of 4,550 to 9,080 kW and available in 5–8 cylinder configurations, covers the small-bore end of the market. Wärtsilä say that it is ideal for ‘Handysize’ vessels (smaller bulk carriers, product tankers and container feeder vessels) which is a segment where they are making their presence increasingly felt after a number of years absence.
The Wärtsilä X40 building on the X35 engines, features Wärtsilä’s second-generation version of its well proven electronically controlled common rail system with time co... [More]
Overhaul cylinder heads and liners; pistons and con rods; cam shafts; bearings; vibration dampers and injectors, and two turbocharger units after completely dismantling three of the marine diesel engines that power Dive Support Vessel (DSV) Rockwater 1, and get it all done within 18 days. That would be a tall order for many firms in the engine service support business, but Royston’s nine-man team of engineers based in Newcastle-on-Tyne, in the North-East of England, worked day-and-night shifts without missing a beat to complete this first stage of the vessel’s 30,000-hour engine overhaul so that the Subsea 7 offshore vessel was back to work on time after scheduled docking.
Photo courtesy of Royston Ltd.
While the team beavered away aboard the DSV in the Barrow-in-Furness dock, another six engineers machined components in the company’s nearby Newcastle workshop, a job that included servicing 27 cylinder heads and liners; fuel injectors; and a complete overh... [More]
A new low-cost alternative to heavy fuel oil recently came successfully through further tests on the 2-stroke marine diesel engine of a Maersk Line container ship, an engine fairly typical of a type to be found on modern ships. The tests were carried out in late 2012 by A.P.Møller-Mærsk and a leading marine engine manufacturer.
Maersk Triple-E Class Container Ship: Image credit Maersk Line
On the back of this test, innovators Quadrise anticipate that commercial volumes of their Marine MSAR®2 bunker oil will be produced progressively from mid-2013, with a full commercial roll-out the following year.Quadrise was formed in the 1990’s by a group of former BP specialists who developed new technology to produce MSAR® (MulPphase Superfine Atomised Residue), from a variety of heavy hydrocarbons with superior combustion characteristics. In 2004 a long term alliance agreement was established with AkzoNobel, a world leader in surface chemistry.MSAR® Fuel Techn... [More]
Cummins Marine took their time so as to make doubly sure before releasing their new EPA Tier 3 compliant engine to the market; just in time to breast the tape before the deadline for the EPA standard for 2.5 to 3.5-liter per cylinder engines took effect on New Year’s Day. That was because they needed time to give their new QSK50 EPA Tier 3 engine a thorough work-out in a real marine working environment (and a tough one at that, as we shall see) on top of earlier test-bed trials in the factory.What better than to install the new engine in a working towboat – which is just what they did last August – so that by mid-December 2012 the engine under test had done its job for about 1720 hours, in one of Enterprise Marine’s towboats, the Eugenie, under the sharp eye of Cummins’ engineers.
Towboat 'Eugenie': Photo courtesy of photographer Ron Richardson/Dick's Towboat Gallery
The Eugenie’s natural habitat as a push boat working the US inlan... [More]
A new high-speed marine diesel engine was introduced a few days ago by Caterpillar Marine Power Systems. The model C175-16, generally thought to be an improved version of the engine launched last year, is claimed by the manufacturers to be the cleanest-burning engine of its size in the world.High-speed four-stroke trunk piston engines are widely specified for propelling small, generally specialised, commercial vessels, such as offshore vessels, tugs and workboat applications, which is exactly the market Caterpillar has in mind for the new engine, although this unit might well serve as a main and emergency genset on any size of ship.
High-speed Marine Diesel Engine CATERPILLAR C175-16: Photo credit Caterpillar Marine Power Systems
The 84.67 ltr displacement C175-16 engine, latest in a line of high performance engines designed to meet EPA Tier 3 and IMO Tier II emissions requirements, is rated at 2001/2168 bkW at 1600 rpm. With a bore of 175 mm (6.9 in) and a stroke o... [More]