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道路阻力差异对试验室空调采暖影响研究

2020-10-21陈智颖龙会游严杰黄宪波袁正

汽车实用技术 2020年11期

陈智颖 龙会游 严杰 黄宪波 袁正

摘 要:空调采暖性能试验,往往通过环境仓动态试验或现地道路试验,为保持试验一致性,环境仓中的环境一致性更好,但需要充分考虑现地实际情况,为了在试验室更精准地模拟低温条件下空调采暖试验,针对目前不同区域道路阻力来源对试验室模拟空调试验结果造成的影响进行分析及研究,使用同一台样车选用襄樊常温阻力及黑河低温阻力,跟现地低温空调采暖试验结果比较,发现低温滑行阻力试验结果与实际道路试验结果更加吻合。关键词:低温阻力;常温阻力;阻力系数;空调采暖试验;发动机水温;出风口温度中图分类号:U463.85+1  文献标识码:A  文章编号:1671-7988(2020)11-110-04

Abstract: Air conditioning heating performance tests often pass through environmental chamber dynamic tests or on-site road tests. In order to maintain test consistency, the environmental consistency in environmental chambers is better, but full consideration of the actual situation on the spot is required. Accurately simulate the air conditioning heating test under low temperature conditions, analyze and study the impact of the current road resistance sources in different areas on the laboratory simulated air conditioning test results, and use the same sample vehicle to select Xiangfan normal temperature resistance and Heihe low temperature resistance to follow local low temperature The air conditioning heating test results were compared, and the results of the low-temperature taxiing resistance test were found to be more consistent with the actual road test results.Keywords: Low temperature resistance; Normal temperature resistance; Drag coefficient; Air conditioning heating test; Engine water temperature; Air outlet temperatureCLC NO.: U463.85+1  Document Code: A  Article ID: 1671-7988(2020)11-110-04

前言

汽車空调低温采暖试验是汽车空调系统最重要的验证项目之一,而带底盘测功机和环境仓的台架试验室是空调采暖性能验证最常见的设备,因为其不受外界环境条件的影响,即使在炎热的夏季也同样可以在环境仓中验证车辆的低温采暖性能。但是由于安全性等考虑,台架低温采暖试验使用的车辆道路阻力曲线基本是选择在常温环境下标准试验场道路滑行得出的,并不是在实际的低温环境道路滑行的数据,目前国内大部分车企车辆滑行阻力主要在襄樊试验场、通用试验场等地点滑行得出的。这就可能导致低温采暖试验过程中,在XXX标准中有低温下采用1.1倍的阻力进行转鼓滑行,但其来源并未进行公开说明,车……

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