作者：刘元鹏

作者单位：交通运输部公路科学研究院, 北京 100088

关键词：汽车工程;汽油车辆;底盘测功系统;额定转矩车速;加载力;驱动轮轮边稳定车速

摘要：

为解决汽车驱动轮输出功率动力性检测的不足，采用发动机转矩达标法，使用汽车底盘测功机，通过功率吸收装置加载检测驱动轮轮边稳定车速，并与发动机额定转矩车速相比较，可有效评价营运车辆的动力性衰退程度。以汽油车辆为例，分析汽车底盘测功系统的加载力、驱动力、系统阻力及计算模型，提出额定转矩车速与驱动轮轮边稳定车速的检测方法。通过试验误差分析表明，检测数据的重复性好，恒力控制准确度高，动力性评价准确。

Rack detection method for power performance of gasoline vehicles based on principle of torque standard

LIU Yuanpeng

Research Institute of Highway Ministry of Transport, Beijing 100088, China

Abstract: Motor torque standard was adopted to solve the defects of output power performance detection for driving wheel of vehicles.By using chassis dynamometer of vehicles and power absorption device,driving wheel steady speed was loaded and detected.Besides,by comparing with rated torque speed of motor,power recession degree of vehicles in operation could be effectively evaluated.For example (gasoline vehicles),the loading force,driving force,system resistance and calculation model of the automobile chassis dynamometer system were researched and analyzed,and the method for detecting the rated torque speed and driving wheel steady speed was presented.The test error analysis shows the good repeatability of detection data,the high precision of the control of constant power,and the high accuracy of dynamic performance evaluation.

Keywords: vehicle engineering;gasoline vehicle;chassis dynamometer system;rated torque speed;loading force;driving wheel steady speed

2017, 43(10): 14-17  收稿日期: 2017-03-23;收到修改稿日期: 2017-05-18

基金项目: 国家道路交通安全科技行动计划（2009BAG13A04）

作者简介: 刘元鹏(1963-),男,吉林通化市人,副研究员,主要从事营运车辆技术管理与检测研究。

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