Electrical wire is sheathed in metal fire-retard tube, to prevent ignition caused by fire in battery test.
电线外套均套有金属防火管，有效阻止电池试验过程着火而燃烧的现象；
Experimental results show that the position of the converter nearer to the exhaust port, the retard ignition timing and the higher idle speed can promote the catalytic converter light-off.
试验结果表明，催化转化器的位置距排气口近可提高排气温度，大大提高催化转化器的转化效率；推迟点火提前角和提高怠速转速均有利于使催化转化器进入快速起燃状态。
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