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WorksheetsBasic Engine Construction
Total questions: 20
Worksheet time: 7mins
Give the correct sequential order in the four piston strokes occur in the engine?
Intake, compression, power, exhaust.
Intake, power, compression, exhaust
Compression, power, intake, exhaust
Exhaust, compression, intake, power
How many degree do the crankshaft of an automotive engine complete its four-stroke cycle?
90°
180°
360°
720°
What is the engine seal is shown ?
Valve Seal
Rear Main Bearing Seal
Camshaft Plug
Throttle Valve Seal
In four stroke engine cycle, give which stroke ignite the compress air/fuel mixture in combustion chamber?
Power stroke
Intake stroke
Exhaust stroke
Compression stroke
Identify which the engine design has the highest compression ratio?
Wankel engine
Four stroke diesel engine
Four stroke petrol engine
Two stroke petrol engine
Name the typical overhead camshaft timing mechanism?
V Belt
Gear
Tooth Belt
Serpentine Belt
Justify the condition of the intake air so the engine can develops more power?
Wet
Cool
Hot and dry
Hot and moist
Name the two basic types of piston engines?
Rotary and reciprocating
Pushrod and reciprocating
Gasoline and spark-ignition
Spark-ignition and compression-ignition
Explain from which action did the engine produces power?
Valve action.
Rotation of the crankshaft
Up-and-down movement of pistons
Combustion pressure pushing on pistons
Define the intake stroke movement?
From TDC to BDC
From BDC to BDC
From BDC to TDC
From static to moving
List the two kinds of piston rings?
Snap and sealing.
Pressure and sealing.
Oil-scraper and blowby.
Compression and oil control.
List three (3) basic cylinder arrangements for automotive engines?
Flat, radial, V.
In-line, V, flat.
V, double line, opposed.
In a row, in-line, opposed.
Explain the operation of the two-stroke-cycle engine?
Is used in most higher-priced cars.
Produces a power stroke every crankshaft revolution
Is twice as powerful as a similar four-stroke-cycle engine.
Produces a power stroke every half crankshaft revolution.
Identify which is the correct relation to measure an engine cylinder?
Bore and stroke.
Diameter and bore.
Displacement and ratio.
Horsepower and efficiency.
If the thermostat sticks closed, discover what will happened to the engine?
Overheat.
Fail to start.
Idle roughly.
Warm up slowly.
Explain how to install compression rings at piston?
Using press fit.
Using plastigage.Using plastigage.
Using a ring expander.
Spiraling them into place.
Determine what is the best way to know whether a timing belt needs replacement or not?
Replace it at every tune up to be safe.
Ask the owner of the car when it was last done.
Remove the top timing belt cover to inspect the condition of the timing belt.
Look at the maintenance information to determine the recommended interval distance.
State the typical type of an oil pump in automotive engine?
Gear and rotor
Impeller and propeller
Worm and spiral
Worm and propeller
Point out the probable cause of engine overheats only while idling or in traffic?
Coolant insufficient.
Cylinder head bending.
Cooling fan inoperative.
Thermostat sticking closed.
Interpret the causes of backfiring in the exhaust system.
Low fuel pump capacity.
A rich mixture in the exhaust gas.
A lean mixture in the exhaust gas.
Spark plug misfiring
