Engine Fundamentals

Question 1

changes the linear motion of the piston to continuous usable rotary motion

Answer 1

crankshaft

Question 2

opens and closes the intake and exhaust valve

Answer 2

camshaft

Question 3

stores energy and smooth the power pulses from the piston

Answer 3

flywheel

Question 4

reduces crankshaft torsional vibration

Answer 4

balancer

Question 5

1 hp = watts

Answer 5

746 watts

Question 6

the theoretical power of an engine

Answer 6

indicated horsepower

Question 7

the actual power measured in at the end of the crankshaft

Answer 7

brake horsepower

Question 8

the power required to overcome engine friction and pumping losses

Answer 8

friction horsepower

Question 9

engine with larger bore diameter

Answer 9

oversquare engine

Question 10

engine with longer stroke length than bore diameter

Answer 10

undersquare engine

Question 11

engine with lower piston speed

Answer 11

oversquare engine

Question 12

engine with higher compression ratio

Answer 12

undersquare engine

Question 13

area if bore x length of stroke

Answer 13

piston displacement

Question 14

area of bore x length of stroke x number of cylinders

Answer 14

engine displacement

Question 15

volume remaining above the piston when it is at TDC

Answer 15

clearance volume

Question 16

(displacement + clearance volume) / clearance volume

Answer 16

compression ratio

Question 17

leakage of burned and unburned gases past the compression rings in the crankcase

Answer 17

blowby