摘要
某款汽车发动机的正时液压张紧器在完成发动机热试后,转矩衰减量超过30%,不能满足工厂质量要求。运用六西格玛设计方法,在不改变缸盖和液压张紧器设计前提下,通过调整垫片和拧紧工艺满足现场要求。
The toque reduction ratio of timing hydraulic tensioner for a certain automobile engine exceeds 30% after engine audit test, which cannot meet plant quality requirements. This issueis solved by using Design for Six Sigma method without any change to tensioner and cylinder head. The field requirements are satisfied through adjusting washer and screwing process.
引文
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