General
The engine is a turbocharged, single-acting four-
stroke diesel engine of the trunk piston type with a
cylinder bore of 270 mm and a stroke of 380 mm.
The crank shaft speed is 720 or 750 rpm.
The engine can be delivered as an in-line engine
with 5 to 9 cylinders.
For easy maintenance the cylinder unit consists of:
the cylinder head, water jacket, cylinder liner, piston
and connecting rod which can be removed as com-
plete assemblies with possibility for maintenance by
recycling. This allows shoreside reconditioning work
which normally yields a longer time between major
overhauls.
The engine is designed for an unrestricted load pro-
file on HFO, low emission, high reliability and simple
installation.
Figure 1: Engine frame.
Engine frame
The monobloc cast iron engine frame is designed to
be very rigid. All the components of the engine
frame are held under compression stress. The
frame is designed for an ideal flow of forces from
the cylinder head down to the crankshaft and gives
the outer shell low surface vibrations.
Two camshafts are located in the engine frame. The
valve camshaft is located on the exhaust side in a
very high position and the injection camshaft is
located on the service side of the engine.
The main bearings for the underslung crankshaft
are carried in heavy supports by tierods from the
intermediate frame floor, and are secured with the
bearing caps. These are provided with side guides
and held in place by means of studs with hydrauli-
cally tightened nuts. The main bearing is equipped
with replaceable shells which are fitted without
scraping.
On the sides of the frame there are covers for
access to the camshafts and crankcase. Some
covers are fitted with relief valves which will operate
if oil vapours in the crankcase are ignited (for
instance in the case of a hot bearing).
Base frame
The engine and alternator are mounted on a rigid
base frame. The alternator is considered as an inte-
gral part during engine design. The base frame,
which is flexibly mounted, acts as a lubricating oil
reservoir for the engine.
Cylinder liner
The cylinder liner is made of special centrifugal cast
iron and fitted in a bore in the engine frame. The
liner is clamped by the cylinder head and rests by
its flange on the water jacket.
MAN Diesel & Turbo
1689477-8.1
Page 1 (7)
General description
B 10 01 1
L27/38S, L27/38
2015.11.26
Summary of Contents for L23/30DF
Page 1: ...L27 38S Project Guide Power Plant Four stroke GenSet...
Page 2: ......
Page 8: ......
Page 9: ...MAN Diesel Turbo I 00 Introduction Page 1 1 I 00 Introduction 2018 04 13 en...
Page 10: ......
Page 14: ......
Page 16: ......
Page 20: ......
Page 31: ...MAN Diesel Turbo D 10 General information Page 1 1 D 10 General information 2018 04 13 en...
Page 32: ......
Page 40: ......
Page 42: ......
Page 46: ......
Page 48: ......
Page 50: ......
Page 59: ...MAN Diesel Turbo B 10 Basic diesel engine Page 1 1 B 10 Basic diesel engine 2018 04 13 en...
Page 60: ......
Page 68: ......
Page 70: ......
Page 72: ......
Page 74: ......
Page 76: ......
Page 82: ......
Page 84: ......
Page 85: ...MAN Diesel Turbo B 11 Fuel oil system Page 1 1 B 11 Fuel oil system 2018 04 13 en...
Page 86: ......
Page 104: ......
Page 114: ......
Page 118: ......
Page 126: ......
Page 128: ......
Page 130: ......
Page 134: ......
Page 138: ......
Page 142: ......
Page 173: ...MAN Diesel Turbo B 13 Cooling water system Page 1 1 B 13 Cooling water system 2018 04 13 en...
Page 186: ......
Page 192: ......
Page 198: ......
Page 202: ......
Page 204: ......
Page 207: ...MAN Diesel Turbo B 14 Compressed air system Page 1 1 B 14 Compressed air system 2018 04 13 en...
Page 210: ......
Page 216: ......
Page 217: ...MAN Diesel Turbo B 15 Combustion air system Page 1 1 B 15 Combustion air system 2018 04 13 en...
Page 218: ......
Page 224: ......
Page 226: ......
Page 227: ...MAN Diesel Turbo B 16 Exhaust gas system Page 1 1 B 16 Exhaust gas system 2018 04 13 en...
Page 228: ......
Page 252: ......
Page 256: ......
Page 269: ...MAN Diesel Turbo B 17 Speed control system Page 1 1 B 17 Speed control system 2018 04 13 en...
Page 270: ......
Page 272: ......
Page 282: ......
Page 284: ......
Page 286: ......
Page 293: ...ENGINE AUTOMATION MAN Diesel Turbo SE SaCoSone GENSET System description Revision 1 5...
Page 306: ...MAN Diesel Turbo SaCoSone GENSET SaCoSone GENSET Communication from GenSet Revision 1 7...
Page 309: ...MAN Diesel Turbo Table of Contents...
Page 324: ......
Page 326: ......
Page 327: ...MAN Diesel Turbo B 20 Foundation Page 1 1 B 20 Foundation 2018 04 13 en...
Page 328: ......
Page 334: ......
Page 335: ...MAN Diesel Turbo B 21 Test running Page 1 1 B 21 Test running 2018 04 13 en...
Page 336: ......
Page 341: ...MAN Diesel Turbo E 23 Spare parts Page 1 1 E 23 Spare parts 2018 04 13 en...
Page 342: ......
Page 348: ......
Page 350: ......
Page 351: ...MAN Diesel Turbo P 24 Tools Page 1 1 P 24 Tools 2018 04 13 en...
Page 379: ...MAN Diesel Turbo B 50 Alternator Page 1 1 B 50 Alternator 2018 04 13 en...
Page 380: ......
Page 386: ......
Page 390: ......
Page 392: ......