甲醇燃料作为低碳替代能源，其理化与燃烧特性对发动机配气系统产生重要影响，配气机构需适应其充气与燃烧需求的变化。本文主要分析甲醇燃料理化特性，同时对甲醇发动机工作原理对配气机构的要求进行研究。围绕面向汽车动力系统的低碳甲醇燃料发动机配气机构设计，文章提出进气参数调节、排气特性调配、气门运动规律设计、配气机构材料选型四大优化路径，并结合工程应用完成设计效果验证，旨在提升甲醇发动机的工况适配能力与应用水平。

Methanol fuel, as a low-carbon alternative energy source, its combustion and physical properties have a significant impact on the engine valve system. The valve mechanism needs to adapt to the changes in the requirements for charging and combustion. This paper mainly analyzes the physical and chemical properties of methanol fuel, and studies the requirements for the valve mechanism based on the working principle of methanol engines. Focusing on the design of the valve mechanism for low-carbon methanol fuel engines for automotive power systems, the article proposes four selection methods: adjustment of intake process parameters, adjustment of exhaust process characteristics, design of valve movement laws, and selection of valve mechanism materials. Combined with engineering applications, the design effect is verified, aiming to enhance the working condition adaptability and application level of methanol engines.