Engine Selection Guide Two-stroke MC/MC-C Engines

Transcription

1 Two-stroke MC/MC-C Engines This book describes the general technical features of the MC Programme This is intended as a 'tool' for assistance in the initial stages of a project. As differences may appear in the individual suppliers extent of delivery, please contact the relevant engine supplier for a confirmation of the actual execution and extent of delivery. For further informatoin see the Project Guide for the relevant engine type. This and most of the Project Guides are available on a CD ROM. The data and other information given is subject to change without notice. 5th Edition February 2000

2 Engine Data Engine Power The table contains data regarding the engine power, speed and specific fuel oil consumption of the engines of the MC Programme. Engine power is specified in both BHP and kw, in rounded figures, for each cylinder number and layout points 1, 2, 3 and 4: 1 designates nominal maximum continuous rating (nominal MCR), at 100% engine power and 100% engine speed. 2, 3 and 4 designate layout points at the other three corners of the layout area, chosen for easy reference. Power 3 4 Speed Fig. 1.01: ayout diagram for engine power and speed Overload corresponds to 110% of the power at MCR, and may be permitted for a limited period of one hour every 12 hours. The engine power figures given in the tables remain valid up to tropical conditions at sea level, ie.: Blower inlet temperature C Blower inlet pressure mbar Seawater temperature C 1 2 Specific fuel oil consumption (SFOC) Specific fuel oil consumption values refer to brake power, and the following reference conditions: ISO 3046/1-1986: Blower inlet temperature C Blower inlet pressure mbar Charge air coolant temperature C Fuel oil lower calorific value ,700 kj/kg (10,200 kcal/kg) Although the engine will develop the power specified up to tropical ambient conditions, the specific fuel oil consumption varies with ambient conditions and fuel oil lower calorific value. For calculation of these changes, see section 2. SFOC guarantee The figures given in this project guide represent the values obtained when the engine and turbocharger are matched with a view to obtaining the lowest possible SFOC values and fulfilling the IMO NO x emission limitations. The Specific Fuel Oil Consumption (SFOC) is guaranteed for one engine load (power-speed combination), this being the one in which the engine is optimised. The guarantee is given with a margin of 5%. As SFOC and NO x are interrelated parameters, an engine offered without fulfilling the IMO NO x limitations is subject to a tolerance of only 3% of the SFOC. ubricating oil data The cylinder oil consumption figures stated in the tables are valid under normal conditions. During running-in periods and under special conditions, feed rates of up to 1.5 times the stated values should be used

3 The engine types of the MC programme are identified by the following letters and figures 6 S 70 MC - C Design C S Compact engine Stationary plant Concept Engine programme Diameter of piston in cm C E Camshaft controlled Electronic controlled (Intelligent Engine) S Super long stroke approximately 4.0 /bore ratio ong stroke approximately 3.2 K Short stroke approximately 2.8 Number of cylinders Fig. 1.02: Engine type designation

4 Engine type ayout point Engine speed Mean effective pressure Power KW BHP Number of cylinders r/min bar K98MC mm mm K98MC-C mm mm S90MC-C mm mm MC-C mm mm K90MC mm mm Fig. 1.03a: Power and speed

5 Engine type ayout point Engine speed Mean effective pressure Power kw BHP Number of cylinders r/min bar K90MC-C mm mm S80MC-C mm mm S80MC mm mm MC mm mm K80MC-C mm mm Fig. 1.03b: Power and speed

6 Engine type ayout point Engine speed Mean effective pressure Power kw BHP Number of cylinders r/min bar S70MC-C mm mm S70MC mm mm MC mm mm S60MC-C mm mm S60MC mm mm Fig. 1.03c: Power and speed

7 Engine type ayout point Engine speed Mean effective pressure Power kw BHP Number of cylinders r/min bar MC mm mm S50MC-C mm mm S50MC mm mm MC mm mm S46MC-C mm mm Fig. 1.03d: Power and speed

8 Engine type ayout point Engine speed Mean effective pressure Power kw BHP Number of cylinders r/min bar S42MC mm mm MC mm mm S35MC mm mm MC mm mm S26MC mm mm Fig. 1.03e: Power and speed

9 Specific fuel oil consumption ubricating oil consumption With high efficiency turbochargers System oil Cylinder oil At load layout point 100% 80% Approx. kg/cyl. 24h K98MC and K98MC-C S90MC-C MC-C K90MC Fig. 1.04a: Fuel and lubricating oil consumption

10 Specific fuel oil consumption ubricating oil consumption With high efficiency turbochargers System oil Cylinder oil At load layout point 100% 80% Approx. kg/cyl. 24h K90MC-C S80MC-C S80MC MC Fig. 1.04b: Fuel and lubricating oil consumption

11 Specific fuel oil consumption ubricating oil consumption With conventional turbochargers With high efficiency turbochargers System oil Cylinder oil At load layout point 100% 80% 100% 80% Approx. kg/cyl. 24h K80MC-C S70MC-C S70MC MC Fig. 1.04c: Fuel and lubricating oil consumption

12 Specific fuel oil consumption ubricating oil consumption With conventional turbochargers With high efficiency turbochargers System oil Cylinder oil At load layout point 100% 80% 100% 80% Approx. kg/cyl. 24h S60MC-C S60MC MC S50MC-C Fig. 1.05d: Fuel and lubricating oil consumption

13 Specific fuel oil consumption ubricating oil consumption With conventional turbochargers With high efficiency turbochargers System oil Cylinder oil At load layout point 100% 80% 100% 80% Approx. kg/cyl. 24h S50MC MC S46MC-C S42MC Fig. 1.05e: Fuel and lubricating oil consumption

14 Specific fuel oil consumption ubricating oil consumption With conventional turbochargers System oil Cylinder oil At load layout point 100% 80% Approx. kg/cyl. 24h 42MC S35MC MC S26MC Fig. 1.05f: Fuel and lubricating oil consumption

15 Fig. 1.05: K98MC engine cross section

16 Fig. 1.06: S80MC engine cross section

17 Fig. 1.07: S70MC-C engine cross section

18 Fig. 1.08: S60MC engine cross section

19 Fig. 1.09: S50MC-C engine cross section

20 Fig. 1.10: 42MC engine cross section

21 Fig. 1.11: S26MC engine cross section