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火車網

爆燃和表面點火的區別和聯系

其他更新時間:2024-06-02 18:32:13

爆燃和表面點火是兩種完全不同的不正常燃燒現象;

區別:爆燃是在電火花點火后,混合氣未燃部分的自然現象;表面點火則是熾熱物點燃混合氣所致;

聯系:兩者之間存在著互相促進的關系,強烈的爆燃,必然增加向缸壁的傳熱,促使燃燒室內熾熱點的形成,導致表面點火;早火又使氣缸壓力升高率和最高燃燒壓力增大,使未燃混合氣受到較大的壓縮和加熱,因而促使了爆燃的發生。

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