中文摘要：

针对同步回转式空气压缩机气缸内部泄漏通道多、间隙相对长度较大的特点，建立了系统泄漏模型，分析了各个泄漏通道的几何特点、运动特征和压差与泄漏量之间的关系。以给定排气量的同步回转式空气压缩机为例，模拟其各个泄漏通道的泄漏量，结果表明排气腔高压空气的轴向泄漏最大。针对在保证压缩机性能的基础上减少泄漏量的优化设计问题，对各泄漏通道的间隙进行了分析。研究结果为该类压缩机的设计提供了理论依据。

英文摘要：

Leakage model of the synchronal rotary air compressor was established toward its characteristics of more leaking channels and relatively longer leaking line. And it analyzed the relation among the leakage rate and the leaking channels＇ geometric features, motion characteristics and pressure difference in detail. Further more, the leakage rate of each channel was simulated to a synchronal rotary air compressor given the air displacement, and the results indicate that the axial leakage of the high pressure air from the air delivery cavity is the largest. Moreover, gaps of each leaking channel were discussed toward the problem of decreasing the leakage rate and meanwhile ensuring the performance of the machine. The research provides theoretical basis for designing the machine and meth ods for reducing the leakage rate.