Types of spark plugs for automobiles
摘要：1. Quasi type spark plug: The insulator skirt is slightly retracted into the shell end face, and the side electrode is outside the shell end face, making it the most widely used type.
2. Edge protruding spark plug: The insulator skirt is longer and protrudes beyond the end face of the housing. It has the advantages of large heat absorption and good anti fouling ability, and can be directly cooled by the intake air to reduce the temperature, so it is not easy to cause hot ignition, so the thermal adaptation range is wide.
1. Quasi type spark plug: The insulator skirt is slightly retracted into the shell end face, and the side electrode is outside the shell end face, making it the most widely used type.
2. Edge protruding spark plug: The insulator skirt is longer and protrudes beyond the end face of the housing. It has the advantages of large heat absorption and good anti fouling ability, and can be directly cooled by the intake air to reduce the temperature, so it is not easy to cause hot ignition, so the thermal adaptation range is wide.
3. Electrode type spark plug: Its electrode is very thin, characterized by strong sparks, good ignition ability, and can ensure rapid and reliable engine starting even in severe cold seasons. It has a wide thermal range and can meet various purposes.
4. Seat type spark plug: Its housing and screw in thread are made into a cone shape, so it can maintain good sealing without a gasket, thereby reducing the volume of the spark plug and being more advantageous for engine design.
5. Polar spark plug: The side electrodes are generally two or more, which has the advantage of reliable ignition and the gap does not need to be adjusted frequently. Therefore, it is often used in some gasoline engines where the electrodes are prone to erosion and the spark plug gap cannot be adjusted frequently.
6. Face jumping spark plug: also known as the gap type along the surface, it is the coldest type of spark plug, and the gap between its center electrode and the end face of the housing is concentric.
In addition, in order to suppress the interference of the car ignition system on the radio, resistance type and shielding type spark plugs have been produced. A resistance spark plug is equipped with a 5-10k Ω resistor inside the spark plug, while a shielding spark plug uses a metal shell to shield and seal the entire spark plug. Shielded spark plugs can not only prevent radio interference, but also be used in waterproof and explosion-proof situations.
2. Edge protruding spark plug: The insulator skirt is longer and protrudes beyond the end face of the housing. It has the advantages of large heat absorption and good anti fouling ability, and can be directly cooled by the intake air to reduce the temperature, so it is not easy to cause hot ignition, so the thermal adaptation range is wide.
3. Electrode type spark plug: Its electrode is very thin, characterized by strong sparks, good ignition ability, and can ensure rapid and reliable engine starting even in severe cold seasons. It has a wide thermal range and can meet various purposes.
4. Seat type spark plug: Its housing and screw in thread are made into a cone shape, so it can maintain good sealing without a gasket, thereby reducing the volume of the spark plug and being more advantageous for engine design.
5. Polar spark plug: The side electrodes are generally two or more, which has the advantage of reliable ignition and the gap does not need to be adjusted frequently. Therefore, it is often used in some gasoline engines where the electrodes are prone to erosion and the spark plug gap cannot be adjusted frequently.
6. Face jumping spark plug: also known as the gap type along the surface, it is the coldest type of spark plug, and the gap between its center electrode and the end face of the housing is concentric.
In addition, in order to suppress the interference of the car ignition system on the radio, resistance type and shielding type spark plugs have been produced. A resistance spark plug is equipped with a 5-10k Ω resistor inside the spark plug, while a shielding spark plug uses a metal shell to shield and seal the entire spark plug. Shielded spark plugs can not only prevent radio interference, but also be used in waterproof and explosion-proof situations.
