李伟1,杨磊2,刘银3,高洪宇1,刘祎1
(1、第一汽车股份公司技术中心,吉林 长春 130011；2、无锡铸造厂，江苏 无锡 214000；3、第一汽车股份公司 质保部，吉林 长春 130011)
摘要：为了减少缸盖生产从气道设计开发到铸造加工之间各阶段易出现的一致性偏差，使缸盖涡流具有更好的一致性和均匀性，借助工业CT扫描、三坐标等工具精确地定量分析评价缸盖铸造质量，对影响缸盖涡流的各种因素进行识别，发现缸盖进气道位置偏移是造成涡流强度一致性偏差的关键影响因素，通过试验、CFD模拟等手段研究铸造偏差对进气道流通能力的影响规律、改进优化铸造工艺，使得量产缸盖涡流强度的一致性偏差达到设计要求。
关键词：柴油机；进气道；一致性偏差
Abstract：In order to reduce the deviation of consistency from
design and development to production of cylinder head at each stage of casting,
so that the cylinder head has better consistency and uniformity of the swirl
ratio. With industrial CT scanning, three coordinate tools, cylinder head
casting quality was accurately analyzed and quantitative evaluated. To identify
the factors that influence the swirl ratio, found the intake port's position
offset is the key factors causing the deviation of the consistency of the swirl
intensity. By means of simulation test, CFD casting deviation rule and
influence on the intake port's flow capacity of the improvement and
optimization during casting process, make the production of cylinder head
consistency to meet the design requirements.
Key words：diesel;intake port;consistency deviation
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