1. LESSON ONE
CYLINDERS & CRANKCASE

2. THE DEFINITION OF A FRAME The engine load carrying part that includes:
cylinder block

7. ENTABLATURE
name given to the cylinder block which incorporates the scavenge air
space and the cooling water spaces

8. STUFFING BOX
prevents lube oil from from being drawn up into the scavenge air space

9. THE DEFINITION OF A FRAME The engine load carrying part that includes:
cylinder block
crankcase
bedplate or base

12. THE DEFINITION OF A FRAME The engine load carrying part that includes:
cylinder block
crankcase
bedplate or base
sump or oil pan
end plates

15. THE DEFINITION OF A FRAME The engine load carrying part that includes:
cylinder block
crankcase
bedplate or base
sump or oil pan
end plates
2. THE DEFINITION OF A CYLINDER BLOCK
A cast iron casing which encloses / houses cylinder liners & supports heads.The heads are tightly secured by studs and nuts to the cylinder block

16. 3. THE DEFINITION OF A CRANKCASE
The crankcase is a housing for the crankshaft and provides space for its rotation.

17. 3. THE DEFINITION OF A CRANKCASE
The crankcase is a housing for the crankshaft and provides space for its rotation.
3.1 MATERIAL
cast steel
cast steel & welded steel plates

18. 3. THE DEFINITION OF A CRANKCASE
The crankcase is a housing for the crankshaft and provides space for its rotation.
3.1 MATERIAL
cast steel
cast steel & welded steel plates
3.2 LOCATION
A column or frame, mounted on the bedplate, forms the engine crankcase.

20. 3. THE DEFINITION OF A CRANKCASE
3.3 CONNECTION
Bedplate to frames-by steel tie rods / long tie bolt
Cylinder covers to cylinder liners-by strong studs anchored in the cylinder block ( M.A.N. )

21. 3.4 CRANKCASE EXPLOSION
3.4.1 Causes
Oil droplets are formed by oil splashing from the bearings mix with air.This mixture does not readily burn or explode unless there are overheated parts within the crankcase & presence of fuel oil.

22. 3.4 CRANKCASE EXPLOSION
3.4.1 Causes
Oil droplets are formed by oil splashing from the bearings mix with air.This mixture does not readily burn or explode unless there are overheated parts within the crankcase & presence of fuel oil.
3.4.2 Prevention
Proper maintenance, correct lubrication, cleanliness.

23. Proper maintenance, correct lubrication, cleanliness.
3.4 CRANKCASE EXPLOSION
3.4.1 Causes
Oil droplets are formed by oil splashing from the bearings mix with air.This mixture does not readily burn or explode unless there are overheated parts within the crankcase & presence of fuel oil.
3.4.2 Prevention
Proper maintenance, correct lubrication, cleanliness.
3.4.3 Safety arrangements
Crankcase explosion relief valves;
Inert gas flooding system;
Crankcase mist detector

25. 3.4.4 Consequences
Minor explosion, flames, pressure shock wave
( ruptures crankcase doors )
Major explosion – widespread damage
3.4.5 Actions
Stop engine until it cools down.

26. 4. BEDPLATE OR BASE
4.1 DEFINITION
Main strength part providing rigid support for the main bearings and crankshaft.

28. 4. BEDPLATE OR BASE 4.1 DEFINITION
Main strength part providing rigid support for the main bearings and crankshaft.
4.2 STRUCTURE
longitudinal box structures with stiffening members and webs
transverse members or girders

29. 4. BEDPLATE OR BASE 4.3 STRESSES Heavy stresses in operation
While supporting the main bearings and bolts
4.4 FUNCTION
to support the frame and all working parts
to collect crankcase lubricating oil and return it to the sump / draining tank

30. 5. TIE BOLTS
- long tie bolts are fitted through the bedplate, frames and entablature to hold these three components in compression and to transmit the firing forces back to the bedplate
- tightened hydraulically
- positioned as close to the center of crankshaft as possible to prevent excessive bending moments

31. VERB + NOUN COLLOCATIONS
loosen
ease off
BOLT
slacken
remove
(un)tighten
release

32. EXPRESSION the bolt chatters the bolt fits tightly
the bolt has been pinned
the bolt has been renewed
the bolts has been retightened
the bolt is rusted through
the bolt is stuck
the bolt works loose

33. EXPRESSIONS the bolt chatters – svornjak klepeće
the bolt fits tightly – svornjak tijesno naliježe
the bolt has been pinned – svornjak je osiguran
the bolt has been renewed – svornjak je promijenjen
the bolts has been retightened – svornjak je ponovno pritegnut
the bolt is rusted through – svornjak je prohrđao
the bolt is stuck – svornjak se ne može odvrnuti
the bolt works loose – svornjak popušta sam