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22 May 2012 12:30 GMT / Scania in the United Kingdom

Seawork première for Scania’s new marine V8 engine

Continuing to build on the recent introduction of Scania’s new global engine platform, a new 16-litre marine V8 delivering up to 1,000 horsepower and 3,340 Nm of torque for patrol craft applications makes its first public appearance at this year's Seawork exhibition (22-24 May, ABP Port of Southampton)

In achieving this power threshold, the new V8 builds on Scania's long tradition of compact power packs which share both technology and architecture with Scania's truck and bus engines.  The high power-to-weight ratio of Scania engines results in exceptional performance, while the unit's size and design means both installation and maintenance are made easy.

Important features for the marine engine segment are reliability, high uptime, generous torque at low revs, good fuel economy and prompt engine response.  The output of the new 16-litre marine engines spans from 550 horsepower for continuous use up to 1,000 hp for patrol craft use.  Ratings have been uprated for planing as well as displacement vessels and Scania's engines are now highly competitive with engines well above 16-litres in terms of their performance.

The torque ratings of up to 3,340 Nm are particularly high for this output class.  This ensures ample performance even at low revs, while facilitating running at favourable revs in all conditions, including high sea and high load.

Vital for marine installations is that the engine is compact, has easy-to-fit auxiliaries and is designed for easy servicing.  Scania's V8 engines traditionally meet all of these requirements thanks to the compact vee-design, which reduces the overall length.

Scania marine engine range

Intended for both propulsion and auxiliary use, all Scania marine engines are based on the company's recently-introduced state-of-the-art modular engine platform, which is used for truck, bus, industrial and marine applications worldwide.

Engine-by-engine, the new range has been designed for higher strength and durability. Swept volumes have increased and performance has been boosted. Many components are shared across the range, a factor that facilitates parts supply, since it significantly reduces the number of unique components for used each engine.  The modular architecture and common work methods simplify training in Scania's service network, while maximising uptime for users.

Besides the new 16-litre V8, Scania's marine engine range also comprises a 13-litre inline six-cylinder unit.  Launched in 2011, the 13-litre inline six-cylinder engine produces 400 hp for continuous use and up to 750 hp for patrol craft use. Installation principles and maintenance requirements are the same as for the new 16-litre V8.

Development and performance control

Scania secures control of all strategic steps in development and performance control.  Basic engine development and manufacturing as well as the development of engine management, fuel injection and emission control systems are all carried out in-house. This strategy is motivated by performance and fuel economy demands and targets, as well as by the need to secure consistent environmental performance, robustness and convenience of operation.

Ancillaries can be efficiently accommodated inside the footprint of the engine and most repairs and servicing can be carried out by a single service technician, since each cylinder has its own head which can be lifted on and off by one person.  This, together with wet cylinder liners makes for easy overhauls in confined spaces.

Optional instrumentation

Scania has also developed easy-to-install optional instrumentation for its marine engines.  Via a user-friendly and flexible web interface, the marine operator can adapt the information on the panels and choose any required data to be displayed.  The panels have prepared layouts for water temperature, engine speed, oil pressure and fuel consumption.  The operator can also connect and configure a gauge indicator for transmission monitoring and for fuel or fresh-water levels.  The instrumentation is type approved by the DNV classification society.

Extended maintenance intervals

Scania's centrifugal oil cleaner effectively removes small particles from the lubrication oil, while reducing the size of the replaceable filter cartridge. In spite of higher performance and tighter emission levels, Scania has been able to raise maintenance and oil-change intervals to 500 hours.

Key characteristics of Scania's marine engine range

  • Compliance with emission standards IMO II, EU Stage IIIA and US Tier 2
  • Scania PDE unit injector fuel injection
  • Revised bore and stroke for increased swept volume
  • Increased combustion pressure
  • Traditional easy-to-service Scania architecture with individual cylinder heads
  • Scania engine management
  • Waste-gate turbocharger(s)
  • Saver ring at the top of the cylinder liners to prevent coke build-up on the piston

Engine dimensions

Engine typeSwept volumeLengthWidthHeight
13-litre inline 612.7 litres1,498 mm972 mm1,173 mm
16-litre V816.4 litres1,551 mm1,251 mm1,214 mm

Dry weights

13-litre inline 616-litre V8
With heat exchanger1,190 kg1,670 kg
With keel cooling1,140 kg1,600 kg

Engine performance

13-litre inline 616-litre V8
Power400-750 hp
294-551 kW
550-1,000 hp
405-736 kW
Torque1,850-2,935 Nm2,387-3,342 Nm