The housing forms an outer shell that surrounds the insulator supports the insulator and installs the spark plug in the engine. The purpose of a spark plug is to provide a place for an electric spark that is hot enough to ignite the air fuel mixture inside the combustion chamber of an internal combustion engine.
Spark Plug
Standard spark plugs in modern engines have a copper center electrode core surrounded by a nickel alloy which you can see at the tip of the plug.
Inside a spark plug. Diego attempts to extract platinum threads from old spark plugs. At the bottom the ground electrode is located so current can flow through the engine itself to the center electrode over the gap. This is done by a high voltage current arcing across a gap on the spark plug.
Inside the plug the center electrode is encased in porcelain which helps transfer heat from the engine to the cooling system. A spark plug has a metal threaded shell electrically isolated from a central electrode by a ceramic insulator. The central electrode which may contain a resistor is connected by a heavily insulated wire to the output terminal of an ignition co.
Http bit ly natgeosubscribe about national geographic. A spark plug is a device for delivering electric current from an ignition system to the combustion chamber of a spark ignition engine to ignite the compressed fuel air mixture by an electric spark while containing combustion pressure within the engine.