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Scania showcases its sustainable marine engine solutions

29/03/2019

Scania showcases its sustainable marine engine solutions at Seawork 2019

Scania is one of the world's oldest and largest automotive manufacturers whose products – which include a range of class-leading marine engines for propulsion and ancillary applications – are in daily service in more than 100 countries worldwide. Scania has a long-held commitment to minimising the environmental impact of its products and manufacturing operations, an objective which has developed today into a major programme designed to drive the shift towards more sustainable transport solutions.

The company's commitment to sustainability takes centre stage at Seawork 2019, where two engines which fully compliant with the International Maritime Organisation's Tier III emissions standard are being displayed on its stand, Q20.

Both of these power units – a six-cylinder, 13-litre DI13M and a V8, 16-litre DI16M – feature Scania's highly fuel-efficient XPI injection system and utilise selective catalytic reduction (SCR) to meet the IMO Tier III standard. This system reduces emissions of nitrous oxides by more than 70 percent.  The engines can also be run on HVO, (hydrotreated vegetable oil), a biodiesel which delivers reductions of carbon dioxide emissions compared to conventional diesel

"While the IMO Tier III standard is already in force in the North American and United States Caribbean Sea areas, all new ships constructed on or after 1 January 2021 destined to operate in European waters will also require IMO Tier III-compliant engines," says David Bamber, General Manager – Scania Engines for Scania (Great Britain) Limited.  "The same holds true for any ships replacing an engine with a non-identical engine or installing an additional engine.  In bringing its IMO Tier III engines to market two years ahead of the standard becoming mandatory, Scania is helping the industry plan and prepare for the transition as operators focus more and more on  sustainability." 

Scania marine engines
Scania produces marine engines in the power range 162-846kW (220 - 1,150hp).  The company's products combine low revs with high torque and are ideally suited to a wide range of propulsion and ancillary applications, including fishing vessels, ferries, fast patrol boats and survey ships.

All Scania engines are based on a robust design with a strength-optimised cylinder block containing wet cylinder liners that can easily be exchanged. Individual cylinder heads with four valves per cylinder promotes fuel economy and ease of maintenance. A Scania developed Engine Management System, EMS, ensures the control of all aspects related to engine performance. The injection system is based on electronically controlled unit injectors that gives low exhaust emissions with good fuel economy and a high torque already at low revs. Scania engines can be fitted with many accessories such as air cleaners, PTOs, transmissions and type approved instrumentation in order to suit a variety of installations.  

The specifications of the two engines on show at Seawork 2019 are as follows:

 

 13-litre DI13M

 IM Tier II, EU Stage IIIA 

 Rating   Engine Speed (rpm) 
     1,200           1,600           1,800           2,100           2,300     
Gross power, full load (kW)

Patrol 

craft

short

 324   485 590 643 643
Gross power, full load (hp, metric) 441 659 802 875 875
Gross power, propeller curve (kW) 126 221 348 512 643
Gross power, propeller curve (hp, metric) 172 300 474 697 875
Gross torque (Nm) 2,579 3,088 3,130 2,924 2,670
Spec fuel consumption. Full load (g/kWh)   211 196 200 208 212
Spec fuel consumption. Propeller curve (l/h)   31 54 84 125 163
Optimum fuel consumption (g/kWh)   195
Heat rejection to coolant (kW)   255 321 395 451 466

 

  16-Lite DI16M

  IMO Tier II, EU Stage IIIA  

Engine Speed (rpm)
     1,200           1,500           1,800           2,000           2,300     
Gross power, full load (kW) 348 597 769 822 846
Gross power, full load (hp, metric) 473 812 1,046 1,118 1,150
Gross power, propeller curve (kW) 166 291 458 597 846
Gross power, propeller curve (hp, metric) 226 395 623 811 1,151
Gross torque (Nm) 2,769 3,799 4,079 3,924 3,512
Fuel consumption at full load (g/kWh) 217 205 201 206 217
Fuel consumption. 3/4 load (g/kWh) 206 203 199 204 211
Fuel consumption. 1/2 load (g/kWh) 201 204 203 207 214
Fuel consumption, propeller curve (l/h) 40 71 110 145 219
Optimum fuel consumption (g/kWh) 199
Heat rejection to coolant (kW) 333 506 612 685 767