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17 Cards in this Set

  • Front
  • Back
Fuel Injection Carb
injects fuel into the air stream at or near the carb
Fuel injection
discharges fuel into the intake port of each cylinder just ahead of the intake valve or directly into the combustion chamber of each cylinder
Fuel injection advantages
(6)
1. No vaporization icing, No need for carb heat only in most severe conditions
2. More uniform delivery
3. Improved control of the Air-Fuel ratio
4. Reduction of maintenance
5. Instant acceleration after idle, no tendency to stall
6. Increased effiency
Continental continuous-flow
multi nozzle
intake port injection
Continental continuous-flow components
(4)
1. Fuel injection pump
2. Fuel-Air control unit
3. Fuel manifold valve
4. Fuel discharge nozzle
Fuel discharge nozzle
lower end serves as mixing chamber before leaving nozzle
Magneto
Alternating Current
Hotter Spark at high speeds
Self-contained
Magneto Advantages
(4)
1. Rugged
2. Reliable
3. Self Contained
4. Light Weight (No Battery)
Magneto (Magnetic Circuit)
(4)
1. Permanent Magnet
2. Coil Core
3. Pole Shoes
4. Pole Shoe Extensions
Magneto (Primary Circuit)
(3)
1. Primary Winding
2. Breaker Points or Contacts
3. Capacitor or Condenser
Magneto (Secondary Circuit)
(4)
1. Secondary winding
2. Distributor & Rotor
3. High tension ignition lead
4. Spark plug
Magneto Classification
(4)
1. Low or High Tension
2. Rotating magnet or inductor-rotor
3. Single or double
4. Flange or Base mounted
Which Spark plug fires first in the cylinder
Exhaust side because the charge is diluted
Flow of current through Magneto
The Rotating Magnet begins turning with the engine / lines of flux build in the poles and travel to the Primary Windings in the Coil / the cam opens the Breaker Points / The lines of flux collapse onto the Secondary Windings increasing voltage greatly / the Capacitor stores it momentarily / then current goes through the High Voltage terminal to the Carbon Brush in the Distributor / the rotating finger in the Distributor then connects with a terminal and the voltage is sent through the Ignition Harness / the Ignition Harness takes it to the Spark Plug
Engine operation
(Particular attention should be paid to)
COMEEEED
1.Cylinder-head temperature
2. Oil Temperature
3. Manifold Pressure
4. Engine oil Pressure
5. Engine RPM
6. Engine response to propeller controls (if constant speed propeller is used)
7. Exhaust Gas Temperature (EGT)
8. Drop in RPM if switching to single-magneto operation
Operational Efficiency
(6)
1.) Clean A/C
2.) In trim
3.) Coordinated
4.) If possible, aft cg
5.) Optimum cruise altitude (winds, temp, and aircraft weight should be considered)
6.) Engine leaned for manufacturer recommended power setting (EGT, CHT, RPM)
Cold Weather/Oil Temp
C172R
After a suitable warm-up (2-5 min. @1000RPM) accelerate the engine several times to higher rpm and if the engine accelerates smoothly and the oil pressure remains steady the airplane is ready for takeoff