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本文对一种目前在业界流行的汽车空调箱温度风门结构及布置形式,运用CFD虚拟分析手段,模拟了自定义抗结霜试验工况下,汽车空调箱温度风门结构及布置形式对EAT传感器附近温度场的影响;然后通过环境模拟试验验证了该温度风门结构及布置形式对整车空调性能(包括抗结霜性能和空调制冷性能)的显著影响。对采用这种目前业界流行的汽车空调箱温度风门结构及布置形式有很好的参考和借鉴意义。 相似文献
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本文系统地阐述了汽车空调系统环境模拟试验技术及相关设备组成,结合对国内汽车空调环境模拟试验室的技术资料分析和实寺考察,提出了汽车空调性能模拟试验技术的发展动向和趋势。 相似文献
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文章根据汽车空调环境模拟试验的实践经验,总结了进行汽车空调环境模拟试验的要点及注意事项,分析了汽车空调环境模拟试验的研究内容及发展方向。 相似文献
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汽车空调控制系统在调整驾驶室的气温、湿度和清洁度等方面都起了很大作用.掌握新能源汽车空调系统的基本工作原理,是车辆检测和维护专业人员必备的基础理论与专业知识.在基本工作原理的基础上,了解汽车空调系统的常见故障维护方式,是高技能人员的重要专业技能.据此,根据多年的实际工作经历上,对新能源汽车空调系统的基本工作原理进行了剖... 相似文献
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以某款商用汽车为对象,对汽车空调在整车车身中渗水的原因进行分析,对控制汽车空调渗水提出多种方案,并进行改进优化。汽车环境模拟试验结果表明,优化后避免了汽车空调在整车车身中渗水现象,提高了车内空调系统的稳定性和可靠性,改善了整车内部环境。 相似文献
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随着汽车逐步向智能化、网联化发展,智能网联车辆逐步进入实际应用阶段。进行智能网联车辆的通行行为优化,对提升驾驶安全性和行车效率,避免事故发生和交通拥堵至关重要。车辆在通过交叉口时将受到很多环境及运动因素的影响,而现有的通行优化模型难以准确表达各类因素共同作用下的行驶环境。为此,基于风险场理论建立由环境场和运动场组成的信号交叉口行车风险场,表征信号交叉口中每点的实时行车风险程度,从而引导车辆驶向风险值低点,并提供下一步长的位移及速度指引,实现车辆的动态轨迹优化及速度控制。典型场景下的仿真结果表明:在优化模型的控制下单车的信号交叉口通行效率明显提升,其中直行方向车辆单车平均通行效率提升最高,平均提升6.35%,通过对交叉口面积内所有车辆进行通行行为优化,交叉口通行效率提升了9.3%,这表明所建模型可以准确表达交叉口行车环境并优化车辆通行行为。研究结论可应用于自动驾驶车辆的交叉口通行控制,并为网联环境下的行车环境表达和安全驾驶控制提供模型基础。 相似文献
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This paper proposes test scenarios for evaluation of yaw stability for medium commercial vehicles. Maneuvering, speed, longitudinal tire force, tire-road friction coefficient, road slope, and load condition are considerable factors that have effect on the medium commercial vehicle yaw stability. After conducting an analysis on these six factors, effective test scenarios were developed. A sine with dwell test is well known as a test scenario for evaluation of performance of electronic stability control (ESC) on passenger vehicles and heavy commercial vehicles. The SWD test was modified considering medium commercial vehicle dynamics, and the ramp steer maneuver with maximum acceleration test was proposed. Simulation validation has been conducted using field test data. From simulation study, it was shown that the ESC system for medium commercial vehicle is effectively evaluated by the proposed test scenarios. 相似文献
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Olaf Gietelink Jeroen Ploeg Bart De Schutter Michel Verhaegen 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2006,44(7):569-590
This paper presents a new method for the design and validation of advanced driver assistance systems (ADASs). With vehicle hardware-in-the-loop (VEHIL) simulations, the development process, and more specifically the validation phase, of intelligent vehicles is carried out safer, cheaper, and is more manageable. In the VEHIL laboratory, a full-scale ADAS-equipped vehicle is set up in a hardware-in-the-loop simulation environment, where a chassis dynamometer is used to emulate the road interaction and robot vehicles to represent other traffic. In this controlled environment, the performance and dependability of an ADAS is tested to great accuracy and reliability. The working principle and the added value of VEHIL are demonstrated with test results of an adaptive cruise control and a forward collision warning system. On the basis of the 'V' diagram, the position of VEHIL in the development process of ADASs is illustrated. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(7):569-590
This paper presents a new method for the design and validation of advanced driver assistance systems (ADASs). With vehicle hardware-in-the-loop (VEHIL) simulations, the development process, and more specifically the validation phase, of intelligent vehicles is carried out safer, cheaper, and is more manageable. In the VEHIL laboratory, a full-scale ADAS-equipped vehicle is set up in a hardware-in-the-loop simulation environment, where a chassis dynamometer is used to emulate the road interaction and robot vehicles to represent other traffic. In this controlled environment, the performance and dependability of an ADAS is tested to great accuracy and reliability. The working principle and the added value of VEHIL are demonstrated with test results of an adaptive cruise control and a forward collision warning system. On the basis of the ‘V’ diagram, the position of VEHIL in the development process of ADASs is illustrated. 相似文献
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基于交通事故卷宗、交通事故视频信息数据,研究机非混行交通环境下典型交通事故形态,构建了面向机非混行交通环境下的自动驾驶汽车测试场景,旨在针对我国较为特殊的机非混行环境下的自动驾驶汽车的测试场景及测试评价方法提供参考。本文首先分析了自动驾驶测试场景的构建需求,建立交通事故数据筛选标准,得到133例可用于构建自动驾驶汽车测试场景的机动车与非机动车交通事故数据集;其次基于《中华人民共和国道路交通安全法》行驶要求,对133例交通事故的发生地点、车辆行为、道路类型、环境光线等方面进行解构分析;最后通过聚类分析,建立了5类典型的自动驾驶测试场景模型,并分析了不同场景模型的关键要素,为实际道路测试提供理论指导。 相似文献