201B - Engine Block & Cylinder Liner Fundamentals

Question 1

What is the rigid foundation for all major engine components?

Answer 1

Engine cylinder block

201B pg. 2

Question 2

Expansion plugs are also called :

Answer 2

Frost plugs
Will pop out to reduce the chance of the block cracking if the coolant freezes.

201B pg. 4

Question 3

What is the primary material used in the construction of heavy-duty diesel engine cylinder blocks?

Answer 3

Allow cast iron

201B pg. 6

Question 4

What are the two types of cylinder block designs?

Answer 4

Enbloc
- Cylinder and crankcase form a one-piece assembly
- With integral cylinders or liners

Modular / Sectional
- For larger or stationary engines
- Multiple pieces bolted together to form the engine block

201B pg. 8

Question 5

How are cylinder liners cooled?

Answer 5

• Dry
• Wet
• Air

201B pg. 9

Question 6

Heavy duty diesel cylinder liners are manufactured from what material?

Answer 6

Allow cast iron & induction hardened

201B pg. 12

Question 7

What is the firewall on a cylinder liner?

Answer 7

Raised rim above the flange that reduces the combustion pressure and heat acting on the head gasket.

201B pg. 12

Question 8

Why must wet cylinder liners be made of heavier construction than dry liners?

Answer 8

They are not supported along the full length of the liner by the engine block.

201B pg. 14