关键词: 挠性软管；结构形式；伸缩率；扭转性能

Abstract: Flexible hoses, as components of automotive parts, are important for absorbing engine vibrations. Within the industry, they exhibit diverse structures, leading to significant variations in performance and price. Moreover, different structures play distinct roles in commercial vehicles, passenger cars, mining vehicles, and other off-road transport vehicles. This article mainly introduces the mainstream structural types of exhaust metal flexible hoses in the current vehicle industry, briefly analyzes the service characteristics and application scopes of various solutions, clarifies that different structural flexible hoses have distinct focuses in terms of application scenarios, and provides practical references for the design of exhaust system components in various types of vehicles.

Key words: flexible hose; structural form; rate of expansion; torsional performance