Post by s54smg2 on Mar 1, 2014 23:54:46 GMT -5
Multi-Ground Electrodes Improve Ignition Capabilities and are Less Sensitive to Increased Voltage Requirements Due to Gap Growth.
Designed to Specific Manufacturer Ignition Requirements, NGK's Multi-Ground Plugs Maintain All the Features of Their Standard Plugs, Including:
-Corrugated Ribs to Prevent Flashover
-Pure Alumina Silicate Ceramic Insulator, Providing Superior Strength and Better Heat Transfer
-Copper Core to Aid in Heat Removal
-Triple Seals to Prevent Leakage
Flashover occurs when the voltage sent to the spark plug does not fire between the center and ground electrodes within the combustion chamber, instead shorting between the metal shell and terminal nut, causing the engine to misfire. This can occur when the air is highly ionized (such as on a stormy day) or when the insulator is dirty.
An elongated insulator extends the electrical path to help reduce flashover. Many plugs also include 4 or 5 ribbed corrugations to create an even longer path along the insulator surface from the terminal to the metal shell, creating added resistance.
A spark plugs insulator serves multiple purposes:
- It provides stability to the plugs center electrode.
- The upper portion of the insulator extends the plug above the cylinder head, making it more easily accessible and extends the electrical path to help prevent flashover. This upper portion may be ribbed (to further prevent flashover) or smooth.
- The bottom portion of the insulator, which supports the center electrode, protrudes into the combustion chamber. Its dimensions take part in concabbage patch kiding the heat range of the plug, or its ability to remove heat picked up during the combustion process.
Though various materials have been used for spark plug insulators through the years, the current contender is aluminum oxide. Most spark plugs now use a 1-piece ceramic insulator made from purified alumina powder. This modern day insulator provides many benefits over previous designs, including superior insulation or thermal conductivity. It also helps prevent overheating and provides exceptional strength to mechanical and thermal shock.
Copper is a great electrical conductor with low resistance.
Almost all spark plugs use a copper cored center electrode to conduct the electricity, jump the gap, and promote heat dissipation. However, due to its soft nature and low melting point, using copper as an outer electrode material would result in a plug that lasted only minutes.
"Copper spark plugs" is a term mistakenly used for a standard or traditional spark plug. A standard spark plug traditionally uses a nickel-alloy outer material fused to the copper core. Some plugs include a coating or pad of precious metals such as iridium or platinum to extend plug life. But as a general rule of thumb, all spark plugs utilize a copper core.
NGK Manufacture Info
Designed to Specific Manufacturer Ignition Requirements, NGK's Multi-Ground Plugs Maintain All the Features of Their Standard Plugs, Including:
-Corrugated Ribs to Prevent Flashover
-Pure Alumina Silicate Ceramic Insulator, Providing Superior Strength and Better Heat Transfer
-Copper Core to Aid in Heat Removal
-Triple Seals to Prevent Leakage
Flashover occurs when the voltage sent to the spark plug does not fire between the center and ground electrodes within the combustion chamber, instead shorting between the metal shell and terminal nut, causing the engine to misfire. This can occur when the air is highly ionized (such as on a stormy day) or when the insulator is dirty.
An elongated insulator extends the electrical path to help reduce flashover. Many plugs also include 4 or 5 ribbed corrugations to create an even longer path along the insulator surface from the terminal to the metal shell, creating added resistance.
A spark plugs insulator serves multiple purposes:
- It provides stability to the plugs center electrode.
- The upper portion of the insulator extends the plug above the cylinder head, making it more easily accessible and extends the electrical path to help prevent flashover. This upper portion may be ribbed (to further prevent flashover) or smooth.
- The bottom portion of the insulator, which supports the center electrode, protrudes into the combustion chamber. Its dimensions take part in concabbage patch kiding the heat range of the plug, or its ability to remove heat picked up during the combustion process.
Though various materials have been used for spark plug insulators through the years, the current contender is aluminum oxide. Most spark plugs now use a 1-piece ceramic insulator made from purified alumina powder. This modern day insulator provides many benefits over previous designs, including superior insulation or thermal conductivity. It also helps prevent overheating and provides exceptional strength to mechanical and thermal shock.
Copper is a great electrical conductor with low resistance.
Almost all spark plugs use a copper cored center electrode to conduct the electricity, jump the gap, and promote heat dissipation. However, due to its soft nature and low melting point, using copper as an outer electrode material would result in a plug that lasted only minutes.
"Copper spark plugs" is a term mistakenly used for a standard or traditional spark plug. A standard spark plug traditionally uses a nickel-alloy outer material fused to the copper core. Some plugs include a coating or pad of precious metals such as iridium or platinum to extend plug life. But as a general rule of thumb, all spark plugs utilize a copper core.
NGK Manufacture Info
