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Worksheetsengines 2
Total questions: 59
Worksheet time: 22mins
An engine is a device that changes _________ energy in fuel to __________ energy.
mechanical, chemical
chemical, mechanical
kinetic, chemical
chemical, kinetic
The bore in which a piston operates is the ________.
Block
Head
Cylinder
Valve train
The engine part that slides back in forth in a cylinder is the _____________.
Valve
Piston
Crankshaft
Camshaft
This links the piston to the crankshaft.
Connecting rod
Camshaft
Valve stem
Piston rings
Converts reciprocating motion into rotating motion.
Camshaft
Piston
Crankshaft
Connecting rod
Which is the correct order of events in an engine?
Intake, Power, Compression, Exhaust
Intake, Power, Exhaust, Compression
Intake, Compression, Power, Exhaust
Intake, Exhaust, Power, Compression
In which event is a mixture of fuel and air drawn into the cylinder?
Intake
Compression
Power
Exhaust
In which event is the air/fuel mixture compressed into a space and ignited by a spark?
Intake
Compression
Power
Exhaust
In which event is the piston driven down by the expansion of the burning air/fuel mixture?
Intake
Compression
Power
Exhaust
In which event are the burn gases expelled from the cylinder?
Intake
Compression
Power
Exhaust
In a four stroke engine, gasoline must be mixed with the correct amount of _____________.
Water
Oil
Carbon dioxide
Air
The _________ creates the spark to ignite the air/fuel mixture.
spark plug
glow plug
flint
striker
Diesel engines use glow plugs to _______ the compressed air, causing it to combust.
heat
cool
release
compress
A _________ is the full travel of the piston, in either direction.
revolution
turn
cycle
stroke
In a four stroke engine, _____ strokes are needed to complete _____ operating cycle.
2, 1
4, 1
4, 2
2, 4
In a four stroke engine, a piston travels up _____ and down ______.
once, once
twice, twice
once, twice
twice, once
Which valve is open during the intake stroke?
Both
Neither
Intake
Exhaust
Which valve is open during the compression stroke?
Both
Neither
Intake
Exhaust
Which valve is open during the exhaust stroke?
Both
Neither
Intake
Exhaust
During the intake stroke, the piston travels to __________.
top dead center
bottom dead center
the mid-point
none of the above
During a four stroke engine cycle, the crankshaft makes how many rotations?
1
2
3
4
The _______ stores rotational energy and keeps the crankshaft spinning smoothly.
crankshaft
counterweights
flywheel
piston
Gives the engine balance.
Piston
Crankshaft
Block
Counterweights
Two stroke engines complete all events in ______ strokes.
1
2
3
4
When performing a cylinder leakage test the technician can hear air leaking from the exhaust, does this indicate:
Non seating/worn inlet valve
Non seating/worn exhaust valve
Cracked cylinder lineing
Worn piston rings
When using a cylinder leakage tester, how would a technician identify worn piston rings:
Air hissing through the dipstick
Air hissing through the air breather
Air bubbles in the cooling system
Oil leaking from the oil filter
When using a cylinder leakage tester to identify worn valves, what position/stroke must the engine be on
Piston TDC/valves closed
Piston BDC/Exhaust valve open
Piston BDC/inlet valve open
Piston half way up/down the cylinder with both valves partially open
When using a cylinder leakage tester what does bubbles through the cooling system signify:
A worn inlet valve
A worn exhaust valve
A cracked liner
Worn piston rings
How do you fit a cylinder leakage tester to a Spark ignition/Petrol engine
Remove Radiator/Header tank cap and apply
Remove and attach to the dipstick tube
Remove a spark plug and screw into the port
Attach to the rear exhaust silencer
What is applied to a cylinder leakage tester in order to find a leak:
Air
Oil
Water
Gas
What does air hissing through the throttle body/air breather signify:
A clogged air breather
A worn Exhaust valve
A blocked Exhaust system
A worn inlet valve
On correctly identifying a worn inlet valve on a cylinder, what is the next step for a tecnician
Service the vehicle
Remove the gearbox
Remove the cylinder head
Check valve clearance
What symptoms would worn/broken piston rings cause
Excessive oil consumption
Blue Smoke
Lack of compression
All of the above
Is it possible to perform a cylinder leakage test on multiple cylinders at the same time
Yes
No
Only on Petrol engines
Only on diesel engines
What is the purpose of the Camshaft?
Open and Close the Valves
Open the Valves
Close the Valves
Other
What is the purpose of the Valve springs?
Open and Close the Valves
Open the Valves
Close the Valves
Other
What is the name of this component?
Camshaft
Connecting Rod
Crankshaft
Piston Head
What is the name of this component?
Camshaft
Connecting Rod
Crankshaft
Piston Head
Which engine valve configuration has the camshaft in the cylinder block.
OHC
OHV
DOHC
Neither
What direction is the piston traveling during the Power-Stroke?
Up
Down
Left
Right
Which valve is bigger?
Intake Valve
Exhaust Valve
Bothe the same size
