Parts of Engine Flashcards
Confines the expanding gases and forms the combustion chamber
Cylinder
Forms a cover on one end of the cylinder
Cylinder Head
Covers the other end of the cylinder, slides the cylinder to transmit the force of the expansion to the connecting rod and drives the crankshaft into motion
Piston
Tight seal against the cylinder wall
Piston rings
Transmits power of combustion from piston to crankshaft
connecting rod
reciprocating motion of piston to rotary motion
crank plus 2 bearing supports
crankshaft
store energy (power stroke) gives energy (idle stroke) uniform rotation
Flywheel
Open and close ports into and out of combustion chamber
Valves
Produces spark to initiate ignition
Sparkplug
Covers crankshaft and holds oil
crankcase
meters fuel and air mixture
carburetor
5-8:1 Compression ratio
GE
14-22:1 CR
DE
25-30% Thermal eff
GE
30-36% therm eff
DE
12-15:1 Air-fuel ratio
GE
15-100:1 Airfuel ratio
DE
1300F exhaust gas temp
GE
900F exhaust temp
DE
diameter of cylinder
bore
length of BDC to TDC
stroke
volume at TDC
CV
Clearance volume
volume at BDC
Total volume
Piston displacement + Clearance Volume
Volume displaced
Piston Displacement
3-15HP single axle, 3-4 kph plowing speed
2W tractor
15-100HP, double axle, 4-8kph plowing speed, 3point hitch implement
4W Tractor
tractor <32HP
Compact
tractor 32-49
SLT
tractor 50-69HP
SLMT
tractor 70-89HP
SMT
tractor 90HP above
SHT
load is connected directly to engine using flange device
100% transmission eff
direct coupling
less than 100% transmission eff (slippage)
belt/pulley
clutch action is obtained by shifting belt from loose to tight
3rd pulley
