Ignition
provides gap for voltage to spark
spark plug
Small engine blocks are usually made of what 2 materials
aluminum alloy
cast iron
what is the main function of the rings
seal between piston and cylinder
what action is taking place on the intake stroke
valve position during intake stroke
intake open exhaust closed
embedded in the flywheel
magnets
what 2 parts make up the block
cylinder
crankcase
why is it important to compress the AF mixture
Easier to ignite
what action is taking place on the power stroke
power is being sent through the connecting rod to the crankshaft
valves position during power stroke
both closed
increases low voltage to high voltage
coil
considered to be the backbone of any engine
crankshaft
why do the valves need to seal properly
air tight combustion chamber
what action is taking place during the exhaust stroke
Exhaust gases are being pushed out of the combustion chamber
valve position during compression stroke
both closed
picks up magnetic field
armature
main function is to open and close the valves
2 parts
tappets
camshaft
what part holds the valves in the closed position
valve springs
what is the time when both valves open at the same time and when does this happen
valve overlap
between exhaust and intake
How is valve timing set and which parts are involved
timing marks
cam and crank
stores electricity
condenser
tool used to set gap and clearance
feeler gauge
what action is taking place during compression stroke
compressing the AF mixture and increasing its temp, making it easier to ignite
give both types of energy conversions we covered
with small engines
mechanical to linear
linear to rotary
1 cycle is how many stroke and how many revolutions of the crankshaft
4 strokes
2 revolutions