某柴油机活塞漏气量的分析与优化

Analysis and Optimizing of Piston Blowby of Diesel Engine

针对某柴油发动机台架试验过程中出现的活塞漏气量大问题,排查出是由于两级增压器漏气和第二道气环开口间隙偏大引起。通过仿真方法对第二道气环开口间隙进行分析,计算结果与测试结果基本一致。重新确定开口间隙范围,降低了活塞漏气量。

Found piston blowb y large in a diesel engine Rig-test process. Found out 2-stage turbocharger blowby and second piston ring end gap oversize .By simulation method anlysis the second piston ring end gap ,anlysis result accord with test result.Redetermine end gap range, reduce piston blowby.