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柴油机EGR冷却器泄漏问题分析与解决 被引量:1

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摘要 某四缸柴油机在试验过程中出现中小符合发动机冒白烟和发动机过热报警现象,试验机拆解后发现冷却液缺少,EGR冷却器存在大量积碳。通过排查分析,发现发动机EGR冷却器冷却效率及发动机配气相位不合理导致发动机未充分燃烧的燃油在EGR冷却器处积碳,积碳中含有的氯离子及硫化物造成冷却器腐蚀泄露。提出更改发动机配气相位,改善发动机燃烧系统及EGR冷却器冷却效率,经试验表明,推迟配气相位可明显改善试验机中低负荷燃烧及排放,降低EGR却器冷却效率可避开未燃烧燃油生成胶状积碳,解决EGR冷却器腐蚀泄露。
作者 武献兵
出处 《中小企业管理与科技》 2016年第10期159-160,共2页 Management & Technology of SME
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