LESSON ONE CYLINDERS CRANKCASE 1 THE DEFINITION OF
- Slides: 67
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.