190201b Engine Block and Cylnder liner Fundamentals Flashcards
The cylinder block of an engine
provides a mounting surface for engine accessories
contains passageways for movement of coolant and oil
forms a rigid foundation for major engine components
What is an embloc design
cylinders and crankcase form a one-piece rigid assembly
Most diesel engine blocks are constructed out of
cast iron
Three types of liners
- dry liner
- wet liner
- air cooled
What is the purpose of the firewall
reduce the heat and pressure acting on the head gasket
What is the advantage of using a mid stop liner
provides greater support for the liner
O-rings on the liners will
prevent coolant leaking into the crankcase
Why are fabricated engine blocks used
one piece casting would be impractical to manufacture
What will prevent vertical movement of the liners when the piston travels up and down
clamping force between the head and the counterbore
Why are removable liners used
easy repair of damage cylinder bores
Why are webs and bulkheads
used on under side of the block
provide strength and rigidity
What would be the advantage of bolting two blocks together
only one section would need to be replaced incase of a failure
What two materials could a cylinder block be constructed from?
Cast iron
Aluminum
The term “enbloc” is used to describe a cylinder block that is?
cylinder and the crankcase are one - piece rigid assembly
