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介绍了四川江津增压器厂研制的高压比ＪＺＨ２４８ 型涡轮增压器取代４５ＧＰ８０４Ａ 型增压器，与东方红〈２１〉型机车用１２Ｖ１８０ＺＪ型柴油机匹配，在昆明高原的台架试验及线路牵引热工性能试验情况。结果表明：采用高压比ＪＺＨ２４８ 型涡轮增压器后，能提高东方红〈２１〉型机车的功率储备，降低气缸排气温度和燃油消耗率，提高机车的运行可靠性及运行速度，延长重要易损件的大修期，可产生巨大的节能经济效益和社会效益
This paper introduces a new type of supercharger JZH248 turbocharger developed by Sichuan Jiangjin Turbocharger Plant instead of the 45GP804A turbo supercharger and matches with 12V180ZJ diesel engine of Dongfanghong <21> locomotive. The bench test and traction heat in Kunming Plateau Performance test conditions. The results show that using JZH248 turbocharger with high pressure ratio can improve the power reserve of Dongfang Hong <21> locomotive, reduce cylinder exhaust temperature and fuel consumption rate, improve locomotive running reliability and operating speed, Loss overhaul period, can produce huge economic and social benefits