AutomobileSpark plugType
1. According to the material, it can be divided into: nickel alloy spark plug, platinum spark plug and Iridium spark plugs.
2. According to the shape, it can be divided into: quasi-type spark plug, electrode type spark plug, edge body protruding type spark plug, seat type spark plug, and surface flashover type spark plug.
3. According to the calorific value, it can be divided into cold type spark plugs and hot type spark plugs (extremely combustible iridium spark plugs, which save more than 10% of fuel consumption, and the fuel consumption of automobiles is relatively good).
If you are more professional, the types of spark plugs are generally as follows:
1. Quasi-type spark plugs
Its insulators The skirt is slightly retracted into the end face of the casing, and the side electrode is outside the end face of the casing, which is the most widely used one.
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, good anti-fouling ability, etc., 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 plugs
The electrodes are very thin, characterized by strong sparks and good ignition ability. It can also ensure that the engine starts quickly and reliably, has a wide thermal range, and can meet a variety of uses.
4. Seat type spark plugs
Its shell and screw-in threads are tapered, so it can maintain a good seal without a gasket, thus shrinking The volume of the spark plug is more beneficial to the design of the engine.
5. Pole-type spark plugs
Generally, there are two or more side electrodes. The advantage is that the ignition is reliable and the gap does not need to be adjusted frequently. It is often used in some gasoline engines where the electrode is easy to ablate and the spark plug gap cannot be adjusted frequently.
6. Surface flashover type spark plug
It is the creepage type, which is the coldest type of spark plug. The gaps between are concentric.
In addition, in order to suppress the interference of the automobile ignition system to the radio, resistance type and shield type spark plugs are produced. The resistance type spark plug is equipped with a 5-10kΩ resistor in the spark plug, and the shield type spark plug uses a metal shell to shield and seal the entire spark plug. Shielded spark plugs can not only prevent radio interference, but can also be used in waterproof and explosion-proof applications.
