Unit 2 Quiz 1 engines

Which of the following vehicle systems must work correctly for proper engine functionality?

All the above

In a pushrod engine, which engine component moves the pushrod directly

Camshaft

All of the following are part of a cylinder head EXCEPT:

Combustion Chamber

Technician A says valves close against precision-machined areas or inserts in the combustion chamber ends of the ports called valve guides. Technician B says some valve seats are located in the block on later model engines. Who is correct?

Neither Technician A nor B

What is the function of valve springs in a cylinder head?

Prevent oil from entering the combustion chamber

What is the purpose of O-ring and valve seals in cylinder head?

Prevent oil from entering the combustion chamber

What is the main job of the cylinder head?

Prevents engine oil from getting past the piston

Technician A says the camshaft must open and close each valve at exactly the right time relative to piston position. Technician B says all overhead cam engines must be belt-driven from the crankshaft. Who is correct?

Technician A only

Two technicians are discussing modern day four stroke engines. Technician A says one stroke of a piston moves the crankshaft through one complete revolution. Technician B says a crankshaft has to make two completed revolutions before the process can start again. Who is correct?

Technician A only

When considering Crankshaft and Camshaft rotation speeds, which is true?

The camshaft turns twice as many revolutions as the crankshaft

Which of these is NOT an advantage of Timing Belts over Timing Chains?

They are quieter

Which of these is not an advantage of Timing Belts over Timing Chains?

They are quieter