摘   要

汽车的动力性能是汽车的主要性能之一,是指汽车在驱动力作用下,克服各种阻力前进的能力。许多汽车性能试验均在底盘测功机上进行，而轮胎滚动阻力是影响准确测试精度的重要原因。轮胎测功机是检测汽车动力性能的重要设备。本设计根据车轮的实际工作状态，开发可以模拟汽车实际使用状态的摩擦系数测定系统，探讨了转鼓试验台的结构特点，建立了车辆行驶阻力在道路上和转鼓试验台上等值转换的试验方法，阐述了底盘测功机的总体设计，系统采用测功机输入动力，制动系消耗功率，并能准确测量输入和输出的转矩参数，进而通过运算得到滚动阻力系数的准确值。为研制开发滚动阻力系数试验装置提供理论参考。

关键词：转鼓试验台；测功机；轮胎；滚动阻力；功率

ABSTRACT

Automobile’s power function is one of important function of automobile. It’s main automobile on the drive force role, overcome different kind’s of resistance to go forward’s capacity. Most of automobile function tab all carryout on the tyre measure power machine, however, tyre roll resistance is important reason of affect accuracy test precision. Chassis measure power machine is important equipment of automobile power function coefficient test system , go deeper into turn tyre tester’s structure feature, set up vehicle drive resistance’s equivalence chance test way on the road and the turn tyre tester, introduce totality plan of chassis measure power machine. The system adopt measure power machine come into power, brake system use up power, and can accurate measure revolution parameter of come into and output, and put through operation obtain the accurate numerical value of roll resistance coefficient. It’s supply theory parameter with develop roll resistance coefficient test installation.

Keywords：Turn Roller Tester；Measure Power Machin；Tyre；Roll Resistance；Power