Week 7 Cylinder Head and Valvetrain test

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

• Parallel Flow

• Cross Flow

• Variable Swirl

• Gradient Flow

A single-piece cylinder head installed on an inline six diesel engine will cover __________ cylinders.

• 1

• 2

• 3

• 6

An engine with the camshaft in the cylinder head will not require a __________.

• 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 Techs

• Neither Tech

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?

• Tech A

• Tech B

• Both Techs

• Neither Tech

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 degrees Fahrenheit

• 1000 degrees Fahrenheit

• 1100 degrees Fahrenheit

• 1200 degrees Fahrenheit

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

Which engine manufacturer utilizes an extra intake valve within some of its available product lines?

• Caterpillar

• Volvo

• Detroit Diesel

• Mack