Abstract: This article summarizes and analyzes the engineering application of chassis lightweight technology in a domestic commercial vehicle enterprise. It analyzes the lightweight technology of chassis at home and abroad, as well as the future development trends and challenges. It proposes that the current main lightweight technology route for commercial vehicles is to adopt lightweight and high-strength advanced materials, and to integrate advanced optimization design methods with advanced manufacturing processes. The article focuses on listing the engineering application of chassis lightweight technology and the achieved weight reduction effects in the application of ultra-high-strength steel frame assembly, ultra-high-strength steel front lower protection, high-grade ductile iron front connecting beam, high-stress material leaf spring,aluminum alloy leaf spring bracket, and high-efficiency cooling module lightweight technology. This provides valuable engineering reference for technical personnel engaged in the development and research of chassis lightweight technology in the commercial vehicle industry.

Key words: Commercial vehicle; Chassis lightweight technology; Lightweight high strength material; Advanced design optimization method; Advanced manufacturing process

摘要： 文章针对国内某商用车企业底盘轻量化技术工程化应用情况进行了总结及分析，分析 了国内外底盘轻量化技术及未来发展趋势和面临的挑战，提出目前商用车主要的轻量化技术 路线是采用轻质高强先进材料，运用先进优化设计方法以及先进制造工艺相融合的方法，并 重点列出该企业在超高强钢车架总成应用、超高强钢前下部防护应用、高强度牌号球铁前接 梁应用、高强度材料板簧应用、铝合金板簧支架应用、高效冷却模块轻量化技术应用等方面 底盘轻量化工程化应用情况及取得的降重效果，对行业内从事商用车底盘轻量化开发研究的 技术人员有一定的工程借鉴价值。

关键词: 商用车；底盘轻量化技术；轻质高强材料；先进优化设计方法；先进制造工艺