Week 2, Chapter 61 - Ignition

Question 1

What is the purpose of the ignition system?

Answer 1

To create a spark to ignite the air-fuel mixture in the combustion chamber

Question 2

What two circuits does the ignition system consist of?

Answer 2

Primary Circuit; Secondary Circuit

Question 3

With the key in start or run position, an electrical connection is made between what two components?

Answer 3

The vehicle battery and the primary winding of the ignition coil

Question 4

As the engine is cranked, what is the purpose of the switching circuit?

Answer 4

Turns the primary ignition coil circuit on and off

Question 5

As high voltage pushes current across the spark plug, the air-fuel mixture is ignited, causing a ______________

Answer 5

Power stroke

Question 6

Electrical device that amplifies the low voltage to very high voltage

Answer 6

Ignition Coil

Question 7

An ignition coil is essentially a __________________

Answer 7

Step-up transformer

Question 8

The ______________ coil winding is a heavy gauge wire. When battery voltage runs through this winding, it creates a strong magnetic field that collapses when a switch is opened.

Answer 8

Primary

Question 9

The ______________ coil winding is a very fine gauge wire wrapped tightly around a soft laminated iron core. When a magnetic field collapses onto when a switch is flipped. This induces extremely high voltage.

Answer 9

Secondary

Question 10

There is no complete connection between the two sets of windings; the only interaction is the ____________________

Answer 10

Magnetic Field

Question 11

The process in which an ignition coil produces voltage

Answer 11

Mutual Induction

Question 12

The amount of voltage required to initially get current to jump the spark plug gap

Answer 12

Required Voltage

Question 13

The maximum amount of voltage that the ignition coil can put out

Answer 13

Available Voltage

Question 14

Higher required voltage or lower available voltage can cause a _____________

Answer 14

Misfire