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汽油直接喷射系统故障因素发生率求权与分析

DOI: 10.3969/j.issn.1674-0696.2014.03.33, PP. 155-160

Keywords: 车辆工程,发动机,汽油直接喷射,可靠性分析,vehicleengineering,engines,gasolinedirectinjection,reliabilityanalysis

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Abstract:

:？结合汽车故障诊断专家经验，构建了汽油直接喷射系统失效的故障树，分析了4种主要故障形式的最小割集，依此建立层次模型。利用层次分析法，定量计算出系统各底层事件发生概率的权值，通过排序找出影响系统可靠性的薄弱环节。对燃油泵、喷油器、高压油泵与油压调节器、燃油泵控制单元、进气翻板位置传感器等高重要度部件进行可靠性分析，为系统优化改进、使用维护、故障诊断的效率提升提出建议。

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