LESSON ONE CYLINDERS CRANKCASE 1 THE DEFINITION OF

LESSON ONE

CYLINDERS & CRANKCASE

1. THE DEFINITION OF A FRAME

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

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

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

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

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

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

1. THE DEFINITION OF A FRAME The engine load carrying part that includes: Ø cylinder block Ø crankcase Ø bedplate or base Ø sump or oil pan Ø end plates 2. THE DEFINITION OF A CYLINDER BLOCK

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

3. THE DEFINITION OF A CRANKCASE

3. THE DEFINITION OF A CRANKCASE The crankcase is a housing for the crankshaft and provides space for it’s rotation.

3. THE DEFINITION OF A CRANKCASE The crankcase is a housing for the crankshaft and provides space for it’s rotation. 3. 1 MATERIAL

3. THE DEFINITION OF A CRANKCASE The crankcase is a housing for the crankshaft and provides space for it’s rotation. 3. 1 MATERIAL Ø cast steel

3. THE DEFINITION OF A CRANKCASE The crankcase is a housing for the crankshaft and provides space for it’s rotation. 3. 1 MATERIAL Ø cast steel Øcast steel & welded steel plates

3. THE DEFINITION OF A CRANKCASE The crankcase is a housing for the crankshaft and provides space for it’s rotation. 3. 1 MATERIAL Ø cast steel Øcast steel & welded steel plates 3. 2 LOCATION

3. THE DEFINITION OF A CRANKCASE The crankcase is a housing for the crankshaft and provides space for it’s rotation. 3. 1 MATERIAL Ø cast steel Øcast steel & welded steel plates 3. 2 LOCATION A column or frame, mounted on the bedplate, forms the engine crankcase.

3. THE DEFINITION OF A CRANKCASE The crankcase is a housing for the crankshaft and provides space for it’s rotation. 3. 1 MATERIAL Ø cast steel Øcast steel & welded steel plates 3. 2 LOCATION A column or frame, mounted on the bedplate, forms the engine crankcase. 3. 3 CONNECTION

3. THE DEFINITION OF A CRANKCASE The crankcase is a housing for the crankshaft and provides space for it’s rotation. 3. 1 MATERIAL Ø cast steel Øcast steel & welded steel plates 3. 2 LOCATION A column or frame, mounted on the bedplate, forms the engine crankcase. 3. 3 CONNECTION Bedplate to frames-by steel tie rods / long tie bolts

3. THE DEFINITION OF A CRANKCASE The crankcase is a housing for the crankshaft and provides space for it’s rotation. 3. 1 MATERIAL Ø cast steel Øcast steel & welded steel plates 3. 2 LOCATION A column or frame, mounted on the bedplate, forms the engine 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. )

3. 4 CRANKCASE EXPLOSION

3. 4 CRANKCASE EXPLOSION 3. 4. 1 Causes

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 crsnkcase & presence of fuel oil.

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 crsnkcase & presence of fuel oil. 3. 4. 2 Prevention

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 crsnkcase & presence of fuel oil. 3. 4. 2 Prevention 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 crsnkcase & presence of fuel oil. 3. 4. 2 Prevention Proper maintenance, correct lubrication, cleanliness. 3. 4. 3 Safety arrangements

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 crsnkcase & presence of fuel oil. 3. 4. 2 Prevention Proper maintenance, correct lubrication, cleanliness. 3. 4. 3 Safety arrangements Ø Crankcase explosion relief valves;

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 crsnkcase & presence of fuel oil. 3. 4. 2 Prevention Proper maintenance, correct lubrication, cleanliness. 3. 4. 3 Safety arrangements Ø Crankcase explosion relief valves; Ø Inert gas flooding system;

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 crsnkcase & presence of fuel oil. 3. 4. 2 Prevention Proper maintenance, correct lubrication, cleanliness. 3. 4. 3 Safety arrangements Ø Crankcase explosion relief valves; Ø Inert gas flooding system; Ø Crankcase mist detector

3. 4. 4 Consequences

3. 4. 4 Consequences Ø Minor explosion, flames, pressure shock wave

3. 4. 4 Consequences Ø Minor explosion, flames, pressure shock wave ( ruptures crankcase doors )

3. 4. 4 Consequences Ø Minor explosion, flames, pressure shock wave ( ruptures crankcase doors ) Ø Major explosion – widespread damage.

3. 4. 4 Consequences Ø Minor explosion, flames, pressure shock wave ( ruptures crankcase doors ) Ø Major explosion – widespread damage. 3. 4. 5 Actions

3. 4. 4 Consequences Ø Minor explosion, flames, pressure shock wave ( ruptures crankcase doors ) Ø Major explosion – widespread damage. 3. 4. 5 Actions Stop engine until it cools down.

4. BEDPLATE OR BASE

4. BEDPLATE OR BASE 4. 1 DEFINITION

4. BEDPLATE OR BASE 4. 1 DEFINITION Main strenght part providing rigid support for the main bearings and crankshaft.

4. BEDPLATE OR BASE 4. 1 DEFINITION Main strenght part providing rigid support for the main bearings and crankshaft. 4. 2 STRUCTURE

4. BEDPLATE OR BASE 4. 1 DEFINITION Main strenght part providing rigid support for the main bearings and crankshaft. 4. 2 STRUCTURE Ø longitudinal box structures with stiffening members and webs

4. BEDPLATE OR BASE 4. 1 DEFINITION Main strenght part providing rigid support for the main bearings and crankshaft. 4. 2 STRUCTURE Ø longitudinal box structures with stiffening members and webs Ø transverse members or girders

4. BEDPLATE OR BASE 4. 1 DEFINITION Main strenght part providing rigid support for the main bearings and crankshaft. 4. 2 STRUCTURE Ø longitudinal box structures with stiffening members and webs Ø transverse members or girders 4. 3 STRESSES

4. BEDPLATE OR BASE 4. 1 DEFINITION Main strenght part providing rigid support for the main bearings and crankshaft. 4. 2 STRUCTURE Ø longitudinal box structures with stiffening members and webs Ø transverse members or girders 4. 3 STRESSES Ø Heavy stresses in operation;

4. BEDPLATE OR BASE 4. 1 DEFINITION Main strenght part providing rigid support for the main bearings and crankshaft. 4. 2 STRUCTURE Ø longitudinal box structures with stiffening members and webs Ø transverse members or girders 4. 3 STRESSES Ø Heavy stresses in operation; Ø While supporting the main bearings and bolts

4. 4 FUNCTION

4. 4 FUNCTION Ø To support the frame and all working parts.

4. 4 FUNCTION Ø To support the frame and all working parts. Ø To collect crankcase lubricating oil and return it to the sump / draining tank.