Page 51: of Maritime Reporter Magazine (January 2002)

Marine Propulsion

RK280: Cutting A New Path

The RK280 from the MAN B&W Diesel stable offers the best of both worlds, in that it was designed and built using the accumulated experience garnered since Rudolf Diesel introduced the diesel engine in 1893, melded with modern engine making methodolo- gies which include predictive engineering techniques such as Finite Element Analysis. Dynamic Analysis,

Thermodynamic Cycle Simulations and Fluid Dynam- ic Analysis. Incorporated into this new engine are the results of extensive field study and experience was gained from the RK270 series, which have performed well in the fast ferry, naval and power generation sec- tors.

The new unit is billed by its maker as "the most pow- erful and fuel efficient 1.000 rpm diesel engine in the world." Marketing claims and bragging rights notwith- standing. the unit does boast some convincing num- bers, as evidenced by the attached charts.

Available in 12, 16 and 20 cylinder V formats, with a continuous rated power of up to 9,000 kWb. the

RK280 embodies the continuation of the "less is more" trend, in that particular attention has been paid to reducing the component count of the engine and min- imizing the maintenance activities necessary. In addi- tion. the engine has a slim profile and clean lines, and with ease of maintenance and installation in mind, it incorporates integrated passages and pipes that result in its compact dimensions.

Also, the engine comes complete with lube oil cool- ers. filters and all thermostatic valves, reducing the volume of separately connected ancillary equipment required.

The crankcase is machined from spheroidal graphite cast iron and features underslung main bearings, which are retained by two vertical studs and two cross bolts per side for overall stiffness.

The main bearing caps are secured by hydraulically tensioned studs to ensure maximum integrity of the crankcase system. The engine has a 52 degree vee angle, which is said to minimize torsional effects, and allows location of the intercooler within the engine vee. effectively reducing engine height.

Circle 71 on Reader Service Card www.maritimereporterinfo.com

RK280 Diesel Engine

Cycle 4

Bore 280

Stroke 33

Mean Piston Speed 11.0 m/s at 1,000 rpm

Standard Rotation Anti-Clockwise looking on the drive end

Aspiration Turbocharged and intercooled

Fuel Marine BSMA 100 (ISO 8217), Class DMA & DMB or equivalent

Dimensions & Weights # Cylinders 12 16 20

Configuration V V V

Sump cap. (1) 1,300 1,600 1,900

Weight, less flywheel (kg) 30,000 37,000 46,000

Length (mm) 5,490 6,410 7,330

Width (mm) 2.100 2,100 2,100

Height (mm) 3,180 3.180 3,180

Rating -kWb (hhp) kWe 750 rpm 100 rpm 1,000 rpin 4.050 (5,430) 3.890 4.860(6,515)4,665 5.400 (7.250) 5.158 5.400(7,245)5,158 6.480 (8.69(1) 6,220 7.200(9,670) 6.910 6.750 (9.050) 5,158 8,100 (10.860) 7.775 9,000 (12.090)8.640

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CORRECTION: Product portfolio Rolls-Royce Marine AS, Engines Bergen

The Rolls-Royce portfolio of marine engines was erroneously omitted from our Diesel Engine guide published earlier this year. Following are complete details

Allen, Rolls-Royce Power Engineering. Diesel Business. Queens Engineering Works, Ford End Road, Bedford MK40 4JB. UK tel +44 1234 272000: fax +44 1234 353934

Circle 241 on Reader Service Card or visit www.maritimereporterinfo.com

Model Bore Stroke Cycle Cylinder no. kW/Cyl Speed MEP Piston Output

RPM bar Speed (m/s) Range (kW) 4000B Series 320 360 4 6. 8. 9. V12 424 - 442 720-750 24,4 8,9-9,25 2,545-5,300 5000 Series 320 410 4 V12, V16 525 720-750 25,5 10.25 6,060-8,240

Bergen. Rolls-Royce Marine AS. Engines Bergen, PO Box 924 N-5808 Bergen, Norway tel +47 55 536000: fax +47 55 190405, e-mail: bergen [email protected]

Model Bore Stroke Cycle Cylinder no. kW/Cyl Speed MEP Piston Output

RPM bar Speed (m/s) Range (kW)

B(aux) 320 360 4 6, 8. 9. V12 424-442 720-750 24.4 8.6-9 2,545-5,300

B (prop) 320 360 4 6, 8, 9, V12 442 750 24.4 9 2,650-5,300

K (aux) 250 300 4 3, 5, 6, 8, 9, V12,

V16, V18 195-221 720-900 18-22 7.2-9 585-3,975

K (prop) 250 300 4 6.8.9.V12.V16.V18 202-223 750-900 20-22 7.5-9 1,215-4,010

B32:40 320 400 4 6.8.9.V12.V16.18V 480 - 500 720- 750 24,9 9,6-10 2880-9000

B32:40 320 400 4 6.8,9,V12.V16,V18 500 750 24,9 10 3000 - 9000

C25:33 250 330 4 5, 6, 8, 9 230-300 900-1000 22.6-24.7 7.9- 11 1100 -2700 48 Maritime Reporter & Engineering News

A Turbocnarger

B Air Hters

C Fresh w3Ter pomps 0 Sea water outlet

E LT water outlet

F Fuel inlet

G Liixicatmg ot «er & drpstck

H FuelWt pump ! Lubricating c* pump

J Fuel titers

L Duple* lubricating ofi'

M Uibncatng oii cooler

N Heai shields