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Incorporating Clean Shipping International


Monday, September 24, 2018 

A first reference for Cumminsí updated X15 engine will be a Louisiana (USA) crew boat, which will replace a non-Cummins engine to improve vessel efficiency and performance. The order, from an undisclosed owner, follows the August 2018 global launch of the Tier III variant of the X15 engine for the commercial marine market. The enginebuilder has also updated its QSK60 engine to meet new emissions requirements.

The X15 is designed to withstand high hour, continuous duty operation with long life in mind. The engine offers variable speed and fixed speed ratings between 336kW and 447kW, while meeting U.S. Environmental Protection Agency (EPA) Tier III and IMO Tier II emissions standards.

Jim Schacht, Executive Director, Cummins Global Marine Business, said:  “Following the introduction of our marine QSK95 engine, which has more power and durability than any other high speed marine engine in its class, our new marine X15 engine reinforces our commitment to deliver the products our customers need to be successful.”

The X15 uses the latest the enginebuilder’s XPI fuel system, a common rail system said to provide the highest injection pressure of any other common rail system. This results in an efficient fuel burn for clean emissions and optimised fuel economy.

In addition to this latest fuel system technology, the X15 utilises Cummins engine control module, CM2350, which provides advanced diagnostic and monitoring capability, as well as engine protection through de-rates and automated engine shut downs to prevent catastrophic failures. The CM2350 technology also features fuel sensor monitoring, digital engine start/stop functionality, and gear pressure and temperature.

Commenting on the installation to the Louisana crew boats, Cummins said: ““The X15 engine is a perfect option for owners looking to repower their older vessels. The engine will fit in place of various types of legacy engines freeing up space in the engine room. It will deliver cleaner emissions and better fuel economy at a continuous duty power cycle.”

The enginebuilder’s QSK60 engine introduced to the marine market in 2008, has also been updated to meet global emissions rules. The engine now incorporates a selective catalytic reduction system to meet the new requirements, while not changing fuel consumption.

 “Cummins engineers have done significant testing of this system to ensure the same dependability, quality and reliability customers have come to expect from our brand,” said Schacht.

“With more than 10 years of experience applying SCR to Cummins engines in our on-highway and industrial segments, vessel operators can rest assured they have a great product powering their ship.”

Cummins’ aim is to offer minimal disruption to current and future customers operations when introducing a new component to their vessels. The SCR system chosen by Cummins is fully serviceable, meaning the catalysts can be removed without the need for new or special tools and easily replaced when needed.

Catalyst life is expected to match the engine life to overhaul, an example of aligning engine and aftertreatment maintenance intervals, contributing to a favourable TCO by minimising downtime. In addition to the serviceability of the SCR system, the Vanadia-based catalyst is capable of tolerating up to 5000ppm sulphur fuel, which allows customers to continue to use the same fuel quality they have always used with Cummins products. 

Cummins is offering a pre-certified system, using what is commonly referred to as Scheme A approach, removing additional certification complexity from the equation for the shipyard, saving time and money on the total project. The Scheme A approach means Cummins has worked directly with an IMO-recognized agency to perform witness and emissions tests before the system arrives at the shipyard. The design is proven in the test cell to meet the emissions requirements and the various design configurations are all pre-approved. Since this work has been done up front, there are no additional emissions tests required once the construction is complete. This approach also ensures the engine and aftertreatment system work together and last over the life of the vessel. Under the Scheme A approach, the order process is unchanged for the customer using a local Cummins distributor as a single point of contact for the IMO Tier III system. 

Complex, global projects require collaboration across country boundaries and time zones. Cummins has 600 company-owned and independent distributors strategically placed all over the globe to support every project from concept throughout the life of the vessel. This global support network provides customers peace of mind that the newly IMO III certified QSK60 engine package will be supported globally, ensuring parts and service capability wherever the vessel operation leads.

Also, warranty terms for Cummins marine engines have recently seen an increase in coverage periods. These periods vary depending on the engine family and rating. The base warranty for marine engines 19 to 60 liters in a heavy-duty or medium continuous-duty rating has been extended 1,000 hours beyond the previous term, while intermittent-duty coverage for the same engine range has extended 1,500 additional hours. Cummins continues to offer optional Encompass coverage, which can provide an additional three years/10,000 hours of coverage to the engine.  

“The QSK60, with its proven track record in the marine market, now has cleaner emissions, extended warranty coverage and the same world class service and support.” Schacht continued: “The QSK60 is the first Cummins engine platform to receive the IMO III certification but other engines will follow in the near future using similar SCR configurations.” 

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