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WorksheetsEngine Components
Total questions: 44
Worksheet time: 57mins
Name
Class
Date
1.
Which of the following is considered the foundation of the diesel engine and supports all of the other engine components?
a)
Crankshaft
b)
Cylinder Block
c)
Camshaft
d)
Cylinder Head
2.
Passages in the cylinder block that allow coolant to move around the outside of the cylinder and carry off the excess heat generated by combustion are called ________________.
a)
Wet Sleeves
b)
Plenums
c)
Water Jackets
d)
Galleries
3.
Grooves cut into the side surface of the piston are fitting with ________________ that seal in the compression and combustion pressure, and control the lubricating oil film on the wall of the cylinder liner.
a)
Gaskets
b)
O-Rings
c)
Oil Seals
d)
Piston Rings
4.
Which of the following connects the rod of the piston?
a)
Rod Cap
b)
Connecting Rod
c)
Piston Pin
d)
Rod Bolt
5.
The area formed by the oil pan and the bottom half of the cylinder block is called the
________________.
________________.
a)
Sump
b)
Head Group
c)
Damper
d)
Crankcase
6.
Which of the following extends into the sump and is covered by a coarse wire screen that prevents dirt and bits of metal from entering the lubrication system and damaging the engine?
a)
Vibration Damper
b)
Oil Pickup Tube
c)
Flywheel
d)
All of the above
7.
The action of opening and closing the valves is determined by the size and shape of the
________________.
________________.
a)
Intake Ports
b)
Cam Lobes
c)
Ring Gear
d)
Cylinder Head
8.
The ________________ converts the rotational motion of the cam lobe into a reciprocating motion in the valve train.
a)
Rocker Arm
b)
Push Rod
c)
Cam Follower
d)
Eccentric
9.
When the cylinder head is bolted to the block, a ________________ is installed between the head and block to maintain an airtight and watertight seal.
a)
Manifold
b)
Head Gasket
c)
Crossover
d)
Header
10.
When two valves are used for the same function in a cylinder, a ________________ is added to form a bridge between the valves.
a)
Manifold
b)
Duel Port
c)
Header
d)
Crosshead
11.
Which of the following distributes clean, filtered air to the intake ports of each cylinder on a four-cycle engine?
a)
Air Box
b)
Intake Manifold
c)
Turbocharger
d)
Exhaust Manifold
12.
A ________________ is a heat exchanger that is designed to cool intake air before it enters the combustion chamber.
a)
Plenum
b)
Manifold
c)
Charger Air Cooler
d)
Radiator
13.
Diesel engines are classified using ________________.
a)
Power Rating
b)
Speed Rating
c)
Cylinder Arrangement
d)
All of the above
14.
When air is compressed, it heats up. A diesel engine will perform better if the intake air is
________________ before it enters the combustion chamber.
________________ before it enters the combustion chamber.
a)
Heated
b)
Filtered
c)
Cooled
d)
Humidified
15.
During the ________________ stroke, both the intake and exhaust valves are closed while the piston moves upward in the cylinder.
a)
Intake
b)
Compression
c)
Power
d)
Exhaust
16.
If the intake valves open 12° before top dead center (BTDC) and the exhaust valves do not close until 12° after top dead center (ATDC), the valve overlap is ________________.
a)
0°
b)
6°
c)
12°
d)
24°
17.
A ________________ completes a full combustion cycle using only one revolution of the crankshaft.
a)
Three-Cylinder Engine
b)
Two-Stroke Cycle Engine
c)
Four-Stroke Engine
d)
Hybrid Engine
18.
In a ________________ engine, the cylinders are arranged in a circle around a common
crankshaft.
crankshaft.
a)
Radial
b)
Delta
c)
W-Type
d)
Sixteen-Cylinder
19.
The ________________ fuel injection system delivers fuel to the individual injectors via short high-pressure fuel lines.
a)
Pressure-Time
b)
Unit Injector
c)
Distributor Pump
d)
Common Rail
20.
A ________________ fuel injection system is sometimes called a rotary pump system.
a)
Distributor Pump
b)
Unit Injector
c)
Common Rail
d)
Pressure-Time
21.
The distance the piston travels between its top dead center and bottom dead center positions is called ________________.
a)
Displacement
b)
Stroke
c)
Bore
d)
Volume
22.
The volume that is displaced by the upward strokes of the engine’s pistons is called
________________.
________________.
a)
Pressure
b)
Cylinder Displacement
c)
Engine Displacement
d)
Volumetric Efficiency
23.
The amount of air that is actually pulled into a cylinder compared to the total volume that could theoretically fill the cylinder is known as ________________.
a)
Compression Ratio
b)
Cylinder Displacement
c)
Clearance Volume
d)
Volumetric Efficiency
24.
The difference between the compression pressure and the expansion pressure is known as the ________________.
a)
Horsepower
b)
Scavenge Efficiency
c)
Mean Effective Pressure
d)
Torque
25.
The rotational or twisting force around a fixed point is called ________________.
a)
Compression
b)
Brake Horsepower
c)
Pressure
d)
Torque
26.
A dry cylinder liner allows for the quickest possible dissipation of excess cylinder heat.
a)
True
b)
False
27.
The main bearing journals support the crankshaft as it turns in the cylinder block.
a)
True
b)
False
28.
Rod caps are interchangeable between connecting rods.
a)
True
b)
False
29.
An internal engine balancer is a counterweight that bolts to one side of the flywheel to cancel out vibrations from the crankshaft.
a)
True
b)
False
30.
The crankshaft coordinates operation of the intake and exhaust valves.
a)
True
b)
False
31.
Push tubes or push rods connect the cam followers to the rocker arms.
a)
True
b)
False
32.
In order to provide greater airflow through the cylinder, many engines are designed with
three or four valves per cylinder.
three or four valves per cylinder.
a)
True
b)
False
33.
A supercharger is driven by exhaust gases.
a)
True
b)
False
34.
Turbochargers allow a small diesel engine to produce up to 40% more power than the same size engine could generate if it were naturally aspirated.
a)
True
b)
False
35.
A four-stroke cycle engine requires four complete revolutions of the crankshaft to complete the four piston strokes that make up one combustion cycle.
a)
True
b)
False
36.
At the completion of the exhaust stroke, the piston will be at or near the bottom dead
center position.
center position.
a)
True
b)
False
37.
Valve overlap is measured in degrees of crankshaft rotation.
a)
True
b)
False
38.
Two-cycle diesel engines do not have intake valves.
a)
True
b)
False
39.
The common element in all indirect injection designs is the use of pintle-type injection
nozzles.
nozzles.
a)
True
b)
False
40.
Engine bore is measured in cubic inches.
a)
True
b)
False
41.
At sea level, atmospheric pressure is equal to 14.7 psi.
a)
True
b)
False
42.
While cylinder displacement does not change without altering either the bore or stroke,
clearance volume is controlled by cylinder head and piston design.
clearance volume is controlled by cylinder head and piston design.
a)
True
b)
False
43.
Mechanical efficiency is the difference between indicated horsepower and brake
horsepower.
horsepower.
a)
True
b)
False
44.
Indicated horsepower refers to the horsepower that the engine will produce at its maximum full-load, governed speed in a particular application.
a)
True
b)
False
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