提出了一种利用空气动力效应，实现发动机气体燃料延迟进气的新型供气系统，该系统不采用机械运动部件，能有效地控制气体燃料的进气起始时刻和进气持续时间。对该管系进气过程进行了理论分析计算，并利用空气进行了模拟实验研究。计算及实验结果表明，该供气系统可有效地延迟进气起始时刻并缩短进气持续时间。为解决气体燃料发动机因气门重叠角过大所引起的问题提供了简洁的途径。 A new type of air supply system using aerodynamic effect to delay the engine gas fuel intake is proposed. The system does not use mechanical moving parts, and can effectively control the starting timing of gas intake and the duration of intake. The process of air intake of the system was theoretically analyzed and calculated, and the simulation experiments were conducted using air. The calculation and experimental results show that the air supply system can effectively delay the intake start time and shorten the intake duration. A simple and straightforward solution to the problem caused by the gas valve overlap due to excessive valve overlap.