| 发动机前端附件带传动系统功率损失的仿真分析 |
| 陶润, 侯之超 |
| 清华大学 汽车安全与节能国家重点实验室, 北京 100084 |
| Simulation on power loss of engine front end accessory belt drive systems |
| TAO Run, HOU Zhichao |
| State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China |
摘要:
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| 摘要为了深入理解发动机前端附件带传动系统功率损失及其影响因素,通过多体动力学仿真计算某附件传动系统的功率损失。通过试验测定了某型皮带的力学特性参数,据此在Adams软件中建立了系统仿真模型。结合模型阐述了计算附件传动系统功率损失的基本方法与过程。通过仿真计算得到了系统功率损失,研究了预张力、负载、转速和加速度等因素对功率损失的影响。结果表明: 功率损失随预张力、负载、转速单调递增,随加速度的变化较小。推算了该系统在一种典型工况下因功率损失造成的油耗。通过开展空载台架试验对比证实了计算模型与方法的正确性。 | |||
| 关键词 ：带传动,发动机前端附件,传动阻力,力矩测量 | |||
| Abstract：The effects of a power loss to the engine front end accessory belt drive systems were studied using a multi-body dynamic simulation. The mechanical parameters of the belt were found in tests with the system dynamic model then built in the commercial software Adams. The effects of the system power loss were found through a series of simulations for the key design parameters, such as the belt pre-tension, accessory loads, rotating speed belt and pulley acceleration, and fuel consumption, for typical vehicle driving cycles. The results show that the power loss increases monotonically with pre-tension, load and rotating speed and changes little with acceleration. The fuel consumption agrees well with bench tests of a drive system without any accessory loads. | |||
| Key words：belt driveengine front end accessoryrolling resistancetorque measurement | |||
| 收稿日期: 2014-11-14 出版日期: 2015-09-18 | |||
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| 通讯作者:侯之超,教授,E-mail:houzc@tsinghua.edu.cnE-mail: houzc@tsinghua.edu.cn | |||
| 引用本文: |
| 陶润, 侯之超. 发动机前端附件带传动系统功率损失的仿真分析[J]. 清华大学学报（自然科学版）, 2015, 55(7): 790-796. TAO Run, HOU Zhichao. Simulation on power loss of engine front end accessory belt drive systems. Journal of Tsinghua University(Science and Technology), 2015, 55(7): 790-796. |
| 链接本文: |
| http://jst.tsinghuajournals.com/CN/或 http://jst.tsinghuajournals.com/CN/Y2015/V55/I7/790 |
图表:
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| 图1 皮带参数的测试 |
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| 图2 某发动机FEAD 系统 |
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| 表1 某发动机FEAD 系统带轮参数 |
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| 表2 某发动机FEAD 系统张紧器参数 |
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| 表3 皮带特性参数 |
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| 图3 FEAD 系统仿真模型 |
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| 图4 不同预张力和负载下系统的阻力矩与功率损失 |
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| 图5 不同转速下系统的阻力矩与功率损失 |
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| 图6 不同加速度下系统的阻力矩和功率损失 |
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| 图7 不同减速度下系统的阻力矩和功率损失 |
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| 图8 NEDC工况下的曲轴转速 |
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| 表4 欧3/4排放标准循环工况油耗 |
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| 图9 台架试验装置 |
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| 表5 不同带张力下的带变形率 |
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| 图10 系统阻力矩的仿真与测试结果对比 |
参考文献:
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