Feature 2
and KTA50.
Minimal changes to the footprints,
mounts, ratings, and optional equipment
from the current KV engines ensure less
complexity for both newbuild installations
and re-powering projects. In the case of
the QSK38, it is said that parts common-
ality with its antecedent, the KTA38, is
about 70%.
The QSK38 covers propulsion and
marine auxiliary applications in respec-
tive rating bands of 821kW-1268kW
(1100bhp-1700bhp) and 984kW-1044kW
(1320bhp-1400bhp), while the QSK50
serves the same sectors at 1193kW-1567kW
(1600bhp-2100bhp) and 1291kW-1343kW
(1730bhp-1800bhp) respectively.
Target sectors include offshore support
vessel, tug, coastal, and inland vessel
propulsion, as well as ships’ service power The new Caterpillar C18 ACERT marine genset balances power density and fuel
across a broad range of vessel types. efficiency, with EPA Tier 2 emissions compliance.
The first European installation of the
Tier 2-compliant QSK38M has involved
the inland waterway barge Lambada, multiple injection events to precisely range (800hp-1000hp), and will also meet
under a contract carried out by Ketels, control engine fuelling. MCRS provides EU Stage IIIA regulations.
the Cummins dealer in Ghent, Belgium. constant high injection pressure regard- While the K38-M uses a similar
Lambada’s prime mover produces less of engine speed or load, delivering footprint, mounting, and ratings, and
about 900kW (1200hp) at 1800rev/min. more low-end torque and idle stability sharing most hardware with its predeces-
The arrangements include the recently while dramatically reducing noise and sor, emissions compliance has been
developed Cummins C Command Elite vibration. achieved by minor modifications in air
engine control panel system, and a new Cummins has utilised an advanced, handling and fuelling, timing adjust-
Twin Disc reduction gearbox. in-cylinder solution to meeting Tier 2 and ments, and adoption of low temperature
In North America, uptake of the new Stage IIIA emission standards without after-cooling.
design has included the re-engining of increasing displacement or making
the EPA’s largest research and monitor- significant configuration changes. New models
ing vessel, Lake Guardian, operated by Quantum Systems electronics are On behalf of the Engine Manufacturers
the agency’s Chicago-based Great Lakes driven by an electronic control module Association (EMA) in the USA, Cummins
National Program Office. (ECM), proven in rugged applications publicly affirmed the industry’s support
The new plant is based on a pair of Tier across Cummins platforms. The C of the EPA’s Final Marine Engine Rule in
2-certified Cummins QSK38 diesels, each Command instrument panels, part of March 2008.
delivering 1200hp (900kW) through Twin the proprietary Electronic Information Aimed at significantly reducing air
Disc gears for power translation by propel- System (EIS) product line, include various pollution from diesel-fuelled engines
lers in Kort nozzles. C-Command Elite monitoring and display options, logging installed in tugs, barges, ferries,
Plus monitoring is incorporated in the critical operating parameters such as workboats, and recreational marine craft
engine systems. engine load, duty cycle, speed, and fuel and also locomotives, the legislation is
Among the references on the newbuild consumption, while affording diagnostic intended to cut PM emissions by 90%
front, the 2007-commissioned pusher and prognostic capabilities. and oxides of nitrogen (NOx) emissions
Eugenie Cenac is powered by two QSK50-M A common point of connection in the by 80%.
Tier 2-compliant engines, each producing customer interface box simplifies the link The rule provides for clean air
1600hp (1200kW). The V-16 diesels deliver between engine electronics and vessel standards comparable to those that the
their power through Reintjes gearboxes, systems. EPA has adopted for large diesel trucks
with 6:1 ratios. The Cummins marine portfolio also and buses, and for construction, mining,
includes an upgrade of the KTA38-M0 and agricultural equipment. The move is
Electronics engine to meet Tier 2 emission levels. predicated on the basis of the prospective
As with the QSK19, the QSK38 and QSK50 The K38-M was developed in response health benefits. It is contended that these
incorporate Cummins’ Modular Common to customer requests for Tier 2-compli- will outweigh costs by 15 to 1.
Rail Fuel System (MCRS), which allows ant prime movers in the 600kW-750kW The criteria set will need to be achieved
Ship & Boat International May/June 2008 29
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