穆振仟1，陈山1，吕忠凯1，魏新刚2
（1.淄博柴油机总公司，山东 淄博 255000；2.山东瀚广建设管理有限公司，山东 淄博 255000）
摘要：气缸盖是发动机的重要零部件之一，它不仅承载着燃烧室内的热负荷和机械负荷，也是结构最复杂、最紧凑的零部件之一。在设计某双燃料发动机气缸盖中，通过改进柴油机气缸盖内部结构从而使其机械强度得到提高，同时其热应力也得到有效减小，结构上设计了具有文丘里效应的天然气进气道，保证天然气快速的进入燃烧室。
关键词：双燃料发动机；气缸盖；天然气；文丘里
Abstract：Cylinder head is one of the important parts of the engine. It not only needs to withstand the thermal load and mechanical load due to combustion, it’s also one of the most complex and compact parts of the structure. This paper mainly introduces the internal structure design of a dual-fuel engine cylinder head. The mechanical strength of the cylinder head is enhanced through internal structure improvement, and the thermal stress is reduced in the meantime. The natural gas inlet with Venturi effect is designed, ensuring that natural gas enters the combustion chamber quickly.
Keywords：dual-fuel engine; cylinder head; natural gas; Venturi
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