Chapter 19 Test

The cylinder head relates to the entire engine assembly by providing the "end cap" for the combustion chamber.

• True

• False

With a(n) ________, instead of mixing the fuel/air in the intake manifold, it mixes in the combustion chamber. Select one:

• Oval combustion chamber

• Wedge combustion chamber

• Gas direct injection cylinder head

• Bathtub combustion chamber

The overhead cam engine system is more complicated than the OHV engine due to the need for enhanced oiling at the top of the engine for the _______.

• Camshaft

• Lifters

• Followers

• All of the above

Valve seats are usually made of a(n) ______ because the alloy is stronger than the metal itself and provides a more durable surface.

• Iron alloy

• Aluminum alloy

• Chrome alloy

• Steel alloy

_______ is a measure of the amount of pressure the valve spring is exerting to overcome the inertia of the valve train as the valve reaches its fully opened position.

• Valve spring closed pressure

• Valve spring open pressure

• Valve spring retainer pressure

• Valve float pressure

Valve seat grinding is the term used to describe when the seat is ground to the proper angle with a special grinding stone. Select one: True or False.

• True

• False

All of the statements below are true EXCEPT: Select one:

• The timing of the valves is controlled by the physical shape and position of the cam lobes on the cam shaft.

• Racing engines are designed to minimize the effect of the column inertia encountered at higher rpm.

• Valve timing is critical to the proper operation of the ICE.

• On variable valve timing engines, the valve timing can be modified to provide the best operating conditions.

Tech A says that valve overlap occurs between the exhaust stroke and the intake stroke. Tech B says that valve overlap occurs to assist in scavenging the cylinder. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Technician A says that when the lifter is on the base circle of the cam lobe, the valve is closed. Technician B says that the valve has a small amount of clearance when the valve is fully open. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B

Technician A says that when the lifter is on the base circle of the cam lobe, the valve is closed. Technician B says that the cam-in-block lifter rides directly against the valve. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B