关键词: 燃油汽车；拖挂模式；功能设计；动力性；燃油经济性

Abstract: Aiming at the pain points of traditional fuel vehicles during towing operation, such as large traction load, insufficient power performance and fuel economy, as well as numerous defects in towing control strategies, this paper carries out the functional design and verification of a dedicated towing mode for fuel vehicles, and defines the optimization objectives of the towing mode. Combining theoretical research with real vehicle verification, this paper systematically investigates the functional logic of the towing mode for fuel vehicles. Based on vehicle dynamics and fuel economy analysis, the overall framework of the towing function is established and the pre-calibration of relevant parameters is completed. A real vehicle test environment is built, and a competitive benchmark vehicle is selected to carry out road comparison tests under multiple vehicle speeds and traction loads. Test data including acceleration performance, constant-speed fuel consumption and driving resistance are collected systematically to quantitatively analyze the improvement effect of the towing mode on vehicle power and fuel economy through horizontal comparison with the benchmark vehicle. The real vehicle test results demonstrate that all indicators of the proposed towing mode function for fuel vehicles meet the preset design targets. Compared with the benchmark vehicle, the developed scheme can effectively boost the mid-to-late stage acceleration capacity and reduce fuel consumption under high-speed constant-speed conditions, realizing a comprehensive balance of power output, fuel economy and driving stability under towing conditions.The optimized vehicle towing control scheme proposed in this study can provide test data and technical references for the development and calibration of towing systems for similar fuel passenger vehicles and pickup trucks.

Key words: fuel vehicles; towing mode; function design; power performance; fuel economy