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我们在濉溪县检查工作时,发现这里大都用东方红-75型拖拉机的活塞装修东方红-54型拖拉机。一打听才知道,误作通用件使用了。他们认为,东方红-75和东方红-54拖拉机的柴油机同属125系列,又都是4125机型,此外,活塞尺寸相同,理当通用。但忽视了活塞顶部凹槽的区别。东方红-75和东方红-54型拖拉机柴油机活塞顶部凹槽是不一样的。正因为如此,两者涡流室的形状不同。因此,东方红-75型拖拉机柴油机的燃油喷入角为45°(相对于活塞中心线)。
When we checked the work in Suixi County, we found that most of the trailers used Dongfanghong-75 tractor to decorate the Dongfanghong-54 tractor. I do not know until I heard, mistaken for common parts used. They think, Dongfanghong -75 and Dongfanghong -54 tractor diesel engines belong to the same 125 series, and are 4125 models, in addition, the same piston size, it should be used universally. But ignored the difference between the top of the piston groove. Dongfanghong -75 and Dongfanghong -54 tractor diesel engine piston top groove is not the same. Because of this, the shape of the two vortex chambers is different. Therefore, the East Hong-75 tractor diesel engine fuel injection angle of 45 ° (with respect to the piston center line).