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Guangzhou He Neng Auto Parts Co., Ltd.
Address:Tianhe district, guangzhou city, guangdong province

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Characteristics and basic structure of spark plugs

PubTime:2017-10-25

  Spark plug standard is usually used to characterize the thermal characteristics of the spark plug, the spark plug heat value that the spark plug insulation skirt heat absorption and heat balance, the higher the calorific value. The stronger the endothermic and heat dissipation capacity, the heat value of the hot spark plug is low and the hot value of the cold spark plug is high. General high power, high compression ratio of the engine selection of high calorific value of the cold spark plug; the contrary, low power, low compression ratio of the engine selection of low calorific value of the spark plug. General spark plug selection is the factory through the product stereotypes to determine, should not be replaced.
  Insulators must have good insulation and thermal conductivity, high mechanical strength, can withstand high temperature thermal shock and chemical corrosion. The shell is steel. The size of the hexagonal thread of the shell has been incorporated into the ISO international standard. The spark plug electrode includes a center electrode and a side electrode, with a spark gap between the two. The size of the gap directly affects the engine start, power, job stability and economy. Reasonable clearance is related to ignition voltage. The electrode material must have good resistance to electrical erosion (spark ablation) and corrosion (chemical - thermal corrosion), and should have good thermal conductivity. Between the center electrode and the wiring screw is a conductor glass sealant, it is necessary to be able to conduct electricity, but also to withstand the mixture of high pressure combustion, while ensuring its sealing.
  This article is organized by Guangzhou He Neng Auto Parts Co., Ltd.

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