CAJ | 학술논문

某型发动机低压压气机进口导流叶片角度α1，其电子调节部分执行机构电磁活门的占空比(Sα)，在整个调节过程中是起关键作用的重要参数，但在台架试车过程中曾多台次出现在不同次检查时Sα数值变化的故障。通过对α1主调节系统工作原理的深入分析，确定试车中Sα变化故障是由于燃油调节机构掺混入空气所致，并得到试车验证。本研究对发动机试车中类似故障的排除具有重要的参考意义。
모형발동궤저압압기궤진구도류협편각도α1，기전자조절부분집행궤구전자활문적점공비(Sα)，재정개조절과정중시기관건작용적중요삼수，단재태가시차과정중증다태차출현재불동차검사시Sα수치변화적고장。통과대α1주조절계통공작원리적심입분석，학정시차중Sα변화고장시유우연유조절궤구참혼입공기소치，병득도시차험증。본연구대발동궤시차중유사고장적배제구유중요적삼고의의。
Sα, the open time ratio signal from electronic control unit for the electro-magnetic valve, of the angleα1 actuator of an engine′s low-pressure compressor IGV, is an important parameter during the whole adjusting work. During engine bed tests, Sα value deviation failures appeared several times among repeating checks. Based on the analysis of working principle of α1 angle control system and verification by engine tests, it was ascertained that the open time ratio Sα parameter deviation failure was caused by the mixing of air into fuel control system. This research is referential to clear the similar failures in engine testing.