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GENSETS MEET LATEST ENVIRONMENTAL STANDARDS

GENSETS MEET LATEST ENVIRONMENTAL STANDARDS

Tuesday, February 23, 2021 

Danish maritime service company VMS Group is to supply two new auxiliary diesel gensets from Wabtec, previously GE Transportation, for cruiseship 'Amadea' of German cruise company Phoenix Reisen.

Wabtec Corporation was first to launch a medium-speed marine diesel engine series, L250 and V250, certified to meet IMO III and EPA Tier 4 NOx limits by deploying advanced EGR technology. Two gensets powered by these engines will be delivered and installed aboard Amadea. VMS will be responsible for project planning, design and engineering services as well as technical calculations of vibrations and noise levels as well as assembly and load testing of the new gensets before installation on board.

“This is where the synergy of our many competencies really comes into play, and our highly experienced engineering team has worked hard to find the most optimal solution”, said Kim Rasmussen, CCO VMS Group.

 Rob Van Solingen, European Sales Director - Marine and Stationary Power, Wabtec, said: “We are proud to partner with VMS Group to power the Phoenix Reisen fleet. VMS Group’s development and design of these gensets is impressive and a great fit for our engines. The gensets are optimised in a way that minimises both noise and vibration while being certified to IMO III emission levels without SCR and urea injection, and this will clearly attract even the most demanding projects.”

Ship design company C-Job Naval Architects will provide technical management in cooperation with BSM Cruise Services for the full conversion project of Amadea, which currently is currently in the port of Bremerhaven due to the corona pandemic, but has a busy summer schedule planned, cruising the Mediterranean Sea and the Norwegian fjords.

A common methodology used to meet the IMO III or EPA Tier 4 NOx standards is Selective Catalytic Reduction (SCR) exhaust gas after-treatment system and urea injection. SCR after-treatment technology requires provisions for space and weight for urea tanks, dosing pumps, piping, a mixing tube and the SCR reactor. Other disadvantages include complications associated with handling urea on board, controlling ammonia slip, the incremental operational cost for consuming urea, and additional maintenance scope.

An alternative methodology to meet the standards is to limit the formation of NOx in-cylinder through deploying Exhaust Gas Recirculation (EGR) technology; Wabtec L250 and V250 are based on this technology, which minimises the formation of NOx during combustion as opposed to reducing NOx in the exhaust gas through a series of chemical reactions in an after-treatment system. Engines with EGR technology offer lower system weight, lower installation cost, lower operating expenses and the requirement of up to 40 % less space.

Since commencing commercial production in 2015, the technology has been successfully rolled out with over 100 units delivered solely for marine applications, having accumulated over 600,000 operating hours, onboard expedition cruise vessels, ferries, offshore support vessels, dredgers, polar research vessels, tugs, ATB tugs and push boats.

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