travels from the top of the cylinder to the bottom
or from the bottom to the top
2 strokes -correct answer -->>One full
revolution of the crankshaft will create how
many strokes in a2 stroke motor
One complete revolution -correct answer -->>A
two stroke motor requires how many revolutions
of crankshaft to produce events required to
complete a combustion cycle
Combustion -correct answer -->>When Spark
plug ignites the compressed air fuel mixture
Exhaust -correct answer -->>Burning air fuel
forces the piston down and the pressure in the
crankcase increases
,Exhaust port is exposed and combustion gas is
expelled from the cylinder due to pressure
difference between gas and atmosphere -
correct answer -->>What happens as the piston
is moving downward in 2 stroke engines
Transfer ports -correct answer -->>What is
exposed the feather down a piston moves
downward in 2 strokes
Pushed into the cylinder and help to force the
remaining exhaust out -correct answer --
>>Where does the air-fuel go after it has been
compressed in the crankcase
Four stroke -correct answer -->>Requires two
complete revolutions of crankshaft to produce 4
strikes required to complete combustion cycle
1. Exhaust valve is opened
2. Piston begins to move upward
3. Exhaust gas is expelled
4. Exhaust valve is closed -correct answer --
>>Exhaust process in 4 stroke motors
, 1. Intake valve is opened
2. Piston moves downward
3. Negative pressure is produced in cylinder
4. Air fuel mixture is taken in -correct answer --
>>Intake process of 4 stroke motors
1. Sparks occur at correct time
2. Combustion of air fuel mixture
3. Production of high temperature, high
pressure gas
4. Piston is forced to move downward -correct
answer -->>Combustion process of 4 strokes
1. Position moves upward
2. Intake valve is closed
3. Air fuel mixture is compressed -correct
answer -->>Compression process of 4 strokes
Valve train -correct answer -->>Integral part of
4 stroke engine operation
Overhead valve (OHV)
Single overhead camshaft (SOHC)