MAN B&W -- Specifications

MAN B&W -- Specifications 

            There has been too much ambiguity with regards to the notations used for Marine Diesel Engines. One can refer the engine manual and find out what such notation means. 

However, this article will provide explanation for all Notations used by MAN B&W engines till date. This has been collected by me over few months and I will continuously update it whenever there is a change or a new addition to the notations.

MAN – Germany – Maschinenfabrik Augsburg NurnbergB&W – Denmark – Burmeister & Wain

The merger of above two Giants is now known as Man B&W.  Well, if you are interested to know more about the history,
Now, with some examples of engine name plate details and specifications, we will understand these notations.

MAN B&W ENGINE Specifications

774VT2BF(S)

7 – Number of cylinders

74 – Cylinder diameter in cm

V – Single acting 2-stroke

T – Cross Head

2B – Degree of Turbocharging

F – Marine applicationS – Stationary Application

 7K74EF

7 – Number of cylinders

K – Two stroke cross head

74 – Cylinder diameter in cm

E/G – Engine model/Hydraulically Operated Exhaust Valve

F – Marine application

 7L80GFCA

7 – Number of cylinders

L – Long stroke

80 – Cylinder diameter in cm

G – Engine model/Hydraulically Operated Exhaust Valve

F – Marine Application

C – Constant pressure turbocharging

A – Engine rating

7L80GB/E

7 – Number of cylinders

L – Long stroke

80 – Cylinder diameter in cm

G – Engine Model/Hydraulically Operated Exhaust Valve

B – Engine rating

E – Economy layout

 7S80MC

7 – Number of cylindersS – Super long stroke80 – Cylinder Diameter in cmMC – Engine model/Programme

6K90MC-C/S

6 – Number of cylinders

K – Two stroke cross head

90 – Cylinder diameter in cm

MC – Engine model/Programme-

C – Short stroke container ship application-

S – Stationary Application

5L60MC MK-5

5- Number of cylinders

L – Long stroke

60  - Diameter of cylinder in cm

MC – Engine Programme

MK 5 – Engine version/Mark Number

 6S90ME-C 9 GI TII

6 – Number of strokes

S – Stroke/bore ratio – (G – ‘Green’ Ultra long stroke, S – Super long stroke, L – Long stroke, K – short stroke)90 – Diameter of the Cylinder in mmM – Engine programme seriesE – Concept – (E – Electronically controlled, C – Camshaft controlled)C – Design – (E – Exhaust valve controlled by camshaft, C – Compact engine)9 – Mark NumberGI – Fuel injection concept – (“blank” – Fuel oil only, GI – Gas injection)TII – Emission regulation – (TII – IMO Tier level)

 Stroke/ Bore ratio:

K – Short stroke (approximately ratio = 2.8)L – Long stroke (approximately ratio = 3.2)S – Super long stroke (approximately ratio = 3.8)G – Ultra long stroke (approximately ratio = 4.7)

Readers click on this link to know more http://www.mandieselturbo.com/0000444/Company/History.html

            This article is made out here after a long workout on various websites......I'm doing this only to increase my knowledge and the readers knowledge with the subject in a very simple language......always keep reading and the comments from all readers are expected to improve the standard of blog.........