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Glow plug for internal combustion engines - using resistance heater coil packed in insulating powder with good thermal conductivity
Glow plug for internal combustion engines - using resistance heater coil packed in insulating powder with good thermal conductivity
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机译:内燃机电热塞-使用电阻加热器线圈,该线圈封装在具有良好导热性的绝缘粉末中
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摘要
Glow plug for internal combustion engines, using a metal housing with a longitudinal bore contg. a scale-resistant glow tube, in which a resistance heating element made of metal with a high m.pt. is embedded in a compacted powde. The powder is a hard material which is a good heat conductor but has a specific electrical resistance (SER) of min. 108 ohm.mm2/m. Metal is pref. Mo, Nb, Ta, or W; and powder is Pref. AlN, BN, SiC, or B4C. The plug only requires a short preheating time of below 15 secs, and contains no toxic BeO which is sometimes used as a packing in conventional glow plugs.
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