北京交通大学学报2017，Vol.41Issue(6)：101-106,6.DOI:10.11860/j.issn.1673-0291.2017.06.016
高压共轨柴油机ECU热测试分析
Thermal test and analysis for ECU of common-rail diesel engine
摘要
Abstract
The integration and miniaturization of diesel engine ECU as well as poor working condi-tions are likely to result in the failure of ECU''s components.In order to study the thermal load of ECU,thermal test and analysis of diesel engine ECU under different operation modes and envi-ronment temperatures are performed through the ECU thermal test system.It''s found out that the rotational speed and the torque of diesel engine will affect the power loss of ECU''s compo-nents.About 75％ of components''temperature reaches maximum when diesel engine operates at rated power,but the temperature of components in injector solenoid valve drive module reaches maximum under maximum torque condition and are significantly affected by the operation condi-tions of diesel engine.The environment temperature affects heat transfer so that the temperature difference between ECU''s components and environment decreases first and then increases with the increase of environment temperature.As environment temperature up to 105 ℃,temperature of ECU components is closed to 125 ℃ which is permissible temperature and the improvement of cooling condition for components is required.关键词
柴油机/电控单元/热测试/运行工况/温度Key words
diesel engine/ECU/thermal analysis/operation conditions/temperature分类
能源科技引用本文复制引用
张纪宝,张欣,秦智晗,侯效森..高压共轨柴油机ECU热测试分析[J].北京交通大学学报,2017,41(6):101-106,6.基金项目
国家科技支撑计划(2014BAG11B00) National Key Technology Research and Development Program of China(2014BAG11B00) （2014BAG11B00）
