Day 2 Progress Check

Question 1

What is the primary function of a spark plug in an ignition system?

Answer 1

To create an electric spark to ignite the air-fuel mixture

Question 2

What does the heat range of a spark plug measure?

Answer 2

The ability to transfer heat to the engine block

Question 3

What are some of the operating conditions and challenges spark plugs face?

Answer 3

Extreme temperatures and pressures

Question 4

Why is proper maintenance and inspection important for reciprocating engine ignition systems?

Answer 4

Ignition systems can become unreliable without proper maintenance.

Question 5

What can result from improper ignition timing in reciprocating engines?

Answer 5

Detonation and pre-ignition with early timing

Question 6

Which component of a spark plug is made of aluminum oxide ceramic and provides electrical insulation and heat transfer?

Answer 6

Insulator

Question 7

What type of spark plug electrodes offers better performance and longer service life?

Answer 7

Fine wire (Iridium/Platinum)

Question 8

Is the following statement true or false? A lower performance engine should use hot range plugs.

Answer 8

true

Question 9

What can happen if the spark plug reach is incorrect?

Answer 9

Combustion issues and engine damage

Question 10

How do spark plug designs and types vary?

Answer 10

In heat range, reach, and electrode type