Features of a Spark Plug Flashcards
1
Q
What is the function of plug terminal?
A
Connected to the high-tension cable from the distributor cap
Conducts high voltage to the central electrode
2
Q
What is the function of a the ceramic insulator?
A
Made of Aluminium oxide
Separates the central electrode from the earth (at up to 40,000 V)
3
Q
What is the function of the metal body?
A
Provides electrical ground to the cylinder head
Cools the plug by transferring heat to cylinder head
4
Q
What are the key features of the central ground electrode?
A
- Nickel-based alloy with a copper core enclosed on it
- Applied with high voltage from distributor
5
Q
What are the key features of the ground electrode?
A
- Wielded to the metal body
- Made of nickel-based alloys
- Makes spark with central electrode
6
Q
What is the function of the sealing gasket?
A
Seals the plug to the cylinder head and helps with heat dissipation
7
Q
What is the function of the electrode gap?
A
Helps with spark generation between the central and ground electrodes
