Contents
What is the end of a spark plug called?
The central electrode protrudes through the porcelain insulator into the combustion chamber, forming one or more spark gaps between the inner end of the central electrode and usually one or more protuberances or structures attached to the inner end of the threaded shell and designated the side, earth, or ground …
What are the 4 parts of a spark plug?
Main Parts
- Plug Terminal: It is the portion that is connected to the high tension cable coming from the distributor cap.
- Ceramic Insulator: It is made up of Aluminum oxide ceramic and acts as an insulator.
- Metal Body:
- Central Electrode:
- Ground Electrode:
- Sealing washer/ Gasket:
- Insulator tip:
- Electrode Gap:
What part is connected to the spark plug?
Spark plugs have an insulated center electrode which is connected by a heavily insulated wire to an ignition coil or magneto circuit on the outside, forming, with a grounded terminal on the base of the plug, a spark gap inside the cylinder.
What is the white part of a spark plug?
Blisters on the insulator tip, melted electrodes, or white deposits are signs of a burned spark plug that is running too hot. Causes can include the engine overheating, incorrect spark plug heat range, a loose spark plug, incorrect ignition timing or too lean of an air/fuel mixture. The spark plug should be replaced.
Which engine is used in spark plug?
Spark plugs are used in the petrol engines to ignite the air fuel mixture whereas in diesel engines the presence of spark plugs is not necessary. Technically petrol engines are called as spark ignition engines ( SI ) and diesel engines are called as compression ignition engines (CI ) .
What color is a good spark plug?
In general, a light tan/gray color tells you that the spark plug is operating at optimum temperature and that the engine is in good condition.
Where does the spark plug go in a spark plug?
At the top of the spark plug sits the connector, or terminal. This is where the spark plug wire attaches. The terminal connects inside the plug to the copper core of the center electrode, which is surrounded by insulation. Next comes the hex head.
What are the different types of spark plugs?
fuel and may leads to misfire. the tip of the high tension electrode, it is divided into two types. It has long heat transfer path and a large area exposed to the combustion gases. gasses. to the spark plug. ionized. central electrode to the ground electrode producing spark. the engine cylinder.
What does the metal case of a spark plug do?
The metal case (or the “jacket” as many people call it) of the spark plug bears the torque of tightening the plug, serves to remove heat from the insulator and pass it on to the cylinder head, and acts as the ground for the sparks passing through the center electrode to the side electrode.
How are the electrodes of a spark plug made?
Each major element of the spark plug—the center electrode, the side electrode, the insulator, and the shell—is manufactured in a continuous in-line assembly process. Then, the side electrode is attached to the shell and the center electrode is fitted inside the insulator.