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Characteristics And Development Of Spark Plugs
- Jul 02, 2017 -

    In the ignition system of the gasoline engine, the high voltage current is introduced into the cylinder to produce an electric spark to ignite the combustible gas mixture. Mainly by the wiring nut, insulator, wiring screw, center electrode, side electrode and shell composition, side electrode welding on the shell.
    The gap between the spark plug electrodes has a great effect on the work of the spark plugs, the gap is too small, the spark is weak, and easily due to the production of carbon and leakage, the gap is too large, the need to breakdown voltage increased, the engine is not easy to start, and at high speed prone to "lack of fire" phenomenon, so the spark plug clearance should be appropriate, the general battery ignition system use of the spark plug gap 7. 8mm, individual spark plugs clearance up to 1. 0mm above.Spark Plug
    Characteristic: The standard of spark plugs usually uses calorific value to characterize the thermal characteristics of spark plugs, and the calorific value of spark plugs is the balance of heat absorbing and radiating of the insulator skirt of spark plugs. The heat absorption and the heat dissipation balance ability is stronger, thus the thermal spark plugs calorific value is low, the cold type spark plug calorific value is high. Generally high power, compression ratio of large engine selection of high calorific value of the cold spark plug; conversely, low power, compression ratio of small engine selection of heat-type spark plugs with low calorific value. The general choice of spark plugs is the factory through the product stereotypes determined, should not be replaced arbitrarily.Spark Plug
     With the development of the automotive industry, the performance of spark plugs is also improving to improve the working quality of gasoline engine, for example, in order to improve the effect of exhaust purification, the use of Wide gap spark plug (gap of 1. $number. 2mm) in order to limit the noise of automobile electric wave, the Anti-interference spark plug is developed. In the past, the life of the spark plugs was very short, and the car manufacturer stipulated that the spark plugs must be checked or replaced after 3 000km (or 6 months). With the improvement of spark plugs and related ignition devices, combined with some measures of exhaust purification, the service life of spark plugs is greatly increased. It is generally stipulated that after 000km (or every 1 years) a car must be inspected or replaced with a spark plug. Platinum electrodes of the spark plug service life longer, generally in the car driving $number 000km no need to check the replacement. The gap between the spark plug electrodes has a great effect on the work of the spark plugs, the gap is too small, the spark is weak, and easily due to the production of carbon and leakage, the gap is too large, the need to breakdown voltage increased, the engine is not easy to start, and at high speed prone to "lack of fire" phenomenon, so the spark plug clearance should be appropriate, the general battery ignition system use of the spark plug gap 7. 8mm, individual spark plugs clearance up to 1. 0mm above.Spark Plug