Chapter 11 Cylinder Head, Valve train Mechanisms

V-block engines utilize which type of cylinder head design?

• Parallel flow

• Reverse flow

• Variable swirl

• Gradient flow

A single-piece cylinder head installed on an inline six diesel engine will cover how many cylinders?

• 1

• 2

• 3

• 6

An engine with the camshaft in the cylinder head will not require which of the following components?

• Valve guide

• Pushrod

• Rocker

• Valve spring

Technician A says variable intake charge and motion systems have a flap deactivation system to change swirl characteristics of intake air. Technician B says the shape of the intake port of most diesels is designed to impart a twisting or spinning motion to the air as it enters the cylinder to reduce turbulence. Who is correct?

• Tech A

• Tech B

• Both

• Neither

Technician A says one of the factors involved in the selection of cylinder head materials include the demand for lightweight engines. Technician B says traditional materials such as cast iron have not provided good strength and wear characteristics for valve train mechanisms. Who is correct?

• Technician A

• Technician B

• Both Technician A and Technician B

• Neither Technician A nor Technician B

What is another name for compacted graphite iron (CGI)?

• Compressed graphite

• Sintered graphite

• Reinforced graphite

• Natural graphite

What is the temperature at which valve damage can occur?

• 900°F (482°C)

• 1000°F (538°C)

• 1100°F (593°C)

• 1200°F (649°C)

When reviewing Figure 11-28, at what position does the exhaust valve open in relation to piston position?

• BDC

• BTDC

• ATD

• BBDC

A camshaft rotates __________ of crankshaft speed.

• At the same speed

• Twice the speed

• Half the speed

• Four times the speed

Poppet valve length is measured from __________.

• Valve tip face to valve head

• Collet groove to valve head

• Valve fillet to valve head

• Valve margin to collet groove