Ignition & Starting System

Question 1

When does the ignition event take place in a four stroke engine?

Answer 1

During the compression stroke

Question 2

Type of ignition system ?

Answer 2

Battery
Magneto
FADEC

Question 3

Battery ignition

Answer 3

Requires an external power source

Question 4

Magneto ignition system

Answer 4

Not dependent on a external power source for electrical energy

Question 5

FADEC

Answer 5

System requires a secondary power source (backup alternator )

Question 6

The magneto

Answer 6

It is A/C generator that produces electrical pulsations

Question 7

Types of magnetos

Answer 7

1. Low and high tension
2. Single or double
3. Flange or base

Question 8

Low Tension magneto

Answer 8

1. It has one coil and needs a high tension transformer (secondary ) each spark plug

Question 9

High tension magneto

Answer 9

1. Contains both a primary and secondary coil in the magneto.

Question 10

Types of magneto

Answer 10

One mag
Double mag

Question 11

Double magneto

Answer 11

One housing
One magnet
One cam
Two sets of points
2 coils (primary and secondary)
2 capacitors and 2 distributors

Question 12

Three circuits of magnetos

Answer 12

Magnetic
Primary
Secondary

Question 13

Magnetic circuit

Answer 13

Permanent magnet (Alnico) aluminum, nickel, cobalt
Coil core
Pole shoes
Pole shoe extensions

Question 14

Primary circuit

Answer 14

Primary windings
Breaker points
Condenser (capacitor)
Ignition switch

Question 15

Secondary Circuit

Answer 15

-Secondary winding
-Carbon brush
-Rotor
-Distributor block
-Ignition leads
-Spark plugs
-The rotor and distributor block make up the distributor section of magneto

Question 16

Keeper

Answer 16

A laminated soft-iron bar placed across the
Poles of the rotating magnet to reduce the loss of magnetism