WÄRTSILÄ PAAE051728, Инструкция по эксплуатации

Страница: 7 / 394

Designation of bearings.
·
Main bearings. The shield bearing (nearest the flywheel) is No.
0, the first standard main bearing is No. 1, the second No. 2 etc.
·
The thrust bearing rails are located at the shield bearing.
The outer rails close to the flywheel are marked with 00 and
the inner rails with 0.
·
The camshaft bearings are designated as the main bearings,
the thrust bearing bushes being designated 00 (outer) and 0.
·
Camshaft gear bearings. The bearing bushes are designated
00 (outer) and 0.
·
Upper and lower bearings shells. In bearings where both the
shells are identical, the upper one is marked with “UP”.
Designation of bearings
Operating side and rear side. Details located at the operating
side may be marked with “M” (Manoeuvering) and correspond-
ingly “B” for the back of the engine (B-bank on a V-engine).
Clockwise rotating engine. When looking at the engine from
the driving end the shaft rotates clockwise.
Counter-clockwise rotating engine. When looking at the
engine from the driving end the shaft rotates counter-clockwise.
Bottom dead centre , abbreviated
BDC
, is the bottom turning
point of the piston in the cylinder.
Top dead centre , abbreviated
TDC
, is the top turning point of
the piston in the cylinder. TDC for every cylinder is marked on
the graduation of the flywheel. During a complete working cycle,
comprising in a four-stroke engine two crankshaft rotations, the
piston reaches TDC twice:
0 1 2 3 4 5 6 7
00
0
00
0 2 3 4 5 6 7 1
Fig 00-2
4000019601
32-200328-03 Contents, Instructions, Terminology 00
WÄRTSILÄ 32 00 - 3