Diesel engine chp 11 pretest

A rule of thumb related to allowable cylinder head warpage is ___________

.006

Cylinder head to engine block mounting clamping force can reach pressures of ____________ lbs.

1,000,000

Roller type cam followers, lifters, and roller rockers can increase power output by ____________%

1.5-3

Exhaust valve temperatures can momentarily exceed _________ degrees under normal operating conditions

1200

Valve seats have a minimum of _________ angles to promote gas flow and heat transfer

3

The most common poppet valve sealing angle used currently is ________ degrees.

45

A single-piece cylinder head installed on an inline six-diesel engine will cover _______ cylinder pack(s

6

An engine's hottest coolant temperature is ____________

At the rear

Measuring cam lobe wear when the camshaft is located within the engine block requires the use of a ____________

Dial indicator

Which engine manufacturer incorporates a spacer plate between the cylinder head and engine block?

cat

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

cat

Worn valve guides may allow engine oil to enter the ____________.

combustion chamber, exhaust manifold

Which engine manufacturer and model has adopted the use of a single camshaft for injector operation only?

cummins ISX

Engine oil bypasses a worn valve guide during ____________

deceleration

What is the mechanism that connects the crankshaft, camshaft, and numerous other accessories in a heavy-duty diesel engine?

gear train

A camshaft rotates _________ of crankshaft speed.

half the speed

An engine manufacturer may choose to incorporate more than one spring within a valve position to ____________.

help prevent valve float

The middle cam lobe for a cylinder's valve train operation is for the ____________.

injector

The widest lobe on a three lobe per cylinder camshaft is for __________ operation

injector

Reported benefits of an engine manufactured with CGI technology are ____________

less weight, increased rigidity, increased thermal fatigue resistance

In the 1980s, cylinder head gaskets were manufactured from __________

multilayer steel

A go-no-go gauge is used to check for ____________.

necking

Valve stem seals are utilized to minimize ____________

oil migration

Advantages related to overhead camshaft engine include ____________.

optimized air flow, more accurate valve train action, easier inspection and service

Which cylinder head flow design arranges the intake and exhaust ports on the same side of the engine?

parallel flow head

The recognized industry name associated with the cylinder head located intake and exhaust valves is ____________ valve

poppet

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

pushrod

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

reverse flow

Which tool(s) should be used to inspect a cylinder head for warpage?

straight edge and thickness gauge

As a poppet valve receded under normal use, the valve operating clearance ___________

tightens up

Improper service techniques when adjusting valve bridges could result in a bent ____________

valve stem

Poppet valve length is measured from ____________.

valve tip face to valve head