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随着单级增压柴油发动机的平均有效压力从18公斤/厘米~2提高到28公斤/厘米~2,使直径为230毫米的铝活塞出现过载。因此,捷克斯洛伐克斯科达工厂改用珠光体级的含铜(1%)高强度铸铁生产这种活塞。
As the average effective pressure of a single-stage turbocharged diesel engine was raised from 18 kg / cm 2 to 28 kg / cm 2, an aluminum piston 230 mm in diameter was overloaded. Therefore, the Czechoslovakia Skoda factory uses pearlitic grade copper (1%) high-strength cast iron to produce this type of piston.