戚元涛，张朝毅，芦宁，王玉冰

（大连中车柴油机有限公司，辽宁 大连 116022）

摘要:研究了一种大功率中速柴油机在高海拔地区性能参数发生的变化，并通过对原型机的功率修正，机油泵、燃油泵、动力组和增压器等方面的高原适应性改进和优化，使该款柴油机在高原地区具有良好性能，满足高海拔地区运用的过渡型高原内燃机车牵引动力的需求。

关键词:高原适应性；海拔高度；增压器；动力组；燃油泵；机油泵；功率修正

Abstract：Performance parameters variation of a medium-speed high-power diesel engine run in high altitude area was analyzed in this paper.The engine of this type showed good performance in the plateau,which met demand of traction power of transition diesel locomotive for plateau application.Based on power correction of the original engine,the plateau adaptability was improved by optimizing the oil pump,fuel pump,power assembly and turbocharger etc.

Key words：plateau adaptability altitude；  turbocharger；power assembly；fuel pump；oil pump；power correction