带液力缓速器的商用车冷却系统性能研究
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摘要
带液力缓速器的商用车在下坡工况时,需将大量的机械能转化为冷却液热能,对整车冷却系统提出了更高的要求。文章建立了下坡工况的能量转化数学模型,得到了冷却系统的需求散热量;利用ANSA和StarCCM+进行了整车热平衡分析,并通过试验验证了数学模型和CAE分析结果的可靠性;为后期液力缓速器车型的冷却系统匹配提供了依据。
Heavy duty truck with hydraulic retarders need to convert large of mechanical energy into coolant thermal energy, when working on long downhill conditions, which puts forward higher requirements for cooling system. This paper establishes a mathematical model of energy conversion in downhill conditions, and obtains the heat dissipation requirement of the cooling system. The thermal balance analysis is carried out by using ANSA and Star CCM+, and the reliability of the mathematical model and CAE analysis results are verified by experiments. It provides a basis for the cooling system of the heavy duty truck with hydraulic retarders.
Heavy duty truck with hydraulic retarders need to convert large of mechanical energy into coolant thermal energy, when working on long downhill conditions, which puts forward higher requirements for cooling system. This paper establishes a mathematical model of energy conversion in downhill conditions, and obtains the heat dissipation requirement of the cooling system. The thermal balance analysis is carried out by using ANSA and Star CCM+, and the reliability of the mathematical model and CAE analysis results are verified by experiments. It provides a basis for the cooling system of the heavy duty truck with hydraulic retarders.
引文
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[2]郎华,马圣龙,徐伟刚,等.重型汽车液力缓速器的匹配应用研究[J].农业装备与车辆工程,2018(7):60-63.
[3]孙博,李环.整车散热系统对液力缓速器持续制动性能的影响[J].公路与汽运, 2014(3):24-25.
[4]高帅,雷胜.一种用于搭载液力缓速器车型的冷却系统应用[J].汽车实用技术,2017(17):9-10.
[5]张胜宾,黄俊刚,施国飞.液力缓速器长下坡恒速制动理论研究[J].机床与液压,2017(8):121-124.
[6]洪宁,胡羽成,向岳山.液力缓速器与车辆的匹配计算[J].装备制造技术,2017(7):146-14.
[2]郎华,马圣龙,徐伟刚,等.重型汽车液力缓速器的匹配应用研究[J].农业装备与车辆工程,2018(7):60-63.
[3]孙博,李环.整车散热系统对液力缓速器持续制动性能的影响[J].公路与汽运, 2014(3):24-25.
[4]高帅,雷胜.一种用于搭载液力缓速器车型的冷却系统应用[J].汽车实用技术,2017(17):9-10.
[5]张胜宾,黄俊刚,施国飞.液力缓速器长下坡恒速制动理论研究[J].机床与液压,2017(8):121-124.
[6]洪宁,胡羽成,向岳山.液力缓速器与车辆的匹配计算[J].装备制造技术,2017(7):146-14.