CN114659806A - 用于整车道路试验的粉尘路及测试方法 - Google Patents
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Abstract
本发明涉及整车道路测试,具体涉及用于整车道路试验的粉尘路及测试方法。本发明的技术方案是用于整车道路测试的粉尘路,包括道路和设置在道路上的遮雨棚;所述遮雨棚包括若干立柱和顶棚;所述道路中间为最高点,向道路左右两侧倾斜,倾斜度为2%±0.5%;所述道路路面上设置有粉尘层;所述道路的左右两侧,由内向外依次设有减速带和路沿,所述减速带沿路沿内侧间隔设置;所述雨棚支柱上设有反射安全指示示廓灯;所述道路的左右两侧的最外缘还设有排水槽。采用本发明的粉尘路和测试方法可解决整车道路试验中,样车无固体颗粒附着导致的试验模拟偏差。
Description
技术领域
本发明涉及整车道路测试,具体涉及用于整车道路试验的粉尘路及测试方法。
背景技术
当前汽车行业的道路试验中,除了对整车机械强度及耐久性能的考核外,同时希望对整车在使用过程中的一些特殊场景进行模拟和考核。如汽车在干燥的西北地区、道路条件不好的山区、建筑工地等区域行驶时扬起的沙尘条件,容易附着在全车各个部位。或直接进入空滤、发动机、燃油通气管等零件,对整车性能和功能造成影响。整车试验中对沙尘条件模拟的效果及模拟强度的可控性、一致性等直接影响车辆上市后的直接表现。现有的粉尘路多使用非铺装道路,导致道路条件标准化较困难。而且雨雪天气会导致道路不可用,影响试验进度。所以设计了一条标准化的粉尘路,用于用户扬尘场景的模拟,对于整车测试显得尤为重要。
发明内容
本发明要解决的技术问题是为整车测试提供模拟粉尘使用环境的道路。
本发明的技术方案是用于整车道路测试的粉尘路,包括道路和设置在道路上的遮雨棚;所述遮雨棚包括若干立柱和顶棚;所述道路中间为最高点,向道路左右两侧倾斜,倾斜度为2%±0.5%;所述道路路面上设置有粉尘层;所述道路的左右两侧,由内向外依次设有减速带和路沿,所述减速带沿路沿内侧间隔设置;所述雨棚支柱上设有反射安全指示示廓灯;所述道路的左右两侧的最外缘还设有排水槽。
进一步的,所述粉尘层厚度为2~3cm,宽4m±0.2m;粉尘层的组成按质量比,直径小于1mm的粉尘︰直径1~2.5mm的砂粒︰直径4~8mm的碎石=1︰1︰0.5。
其中,所述道路长度为100m±5m,驾驶路面宽5m±0.1m;道路从上到下依次为厚0.2m±0.01m混凝土面层、厚0.16m±0.01m水泥稳定碎石层和厚0.1m±0.01m碎石承重层。
具体的,所述减速带宽0.5m±0.1m。
进一步的,所述路沿宽度0.2m±0.1m,路沿高度0.5m±0.1m。
其中,所述顶棚宽度7.6m±0.1m;所述道路同侧的立柱间隔2m±0.1m,道路左侧立柱高4.7m±0.1m,右侧立柱高4.5m±0.1m,立柱宽度0.1~0.2m;立柱到路沿距离0.4m±0.1m。
进一步的,所述反射安全指示示廓灯离地高度1.5m±0.1m。
具体的,所述排水槽宽度0.1m±0.01m,两排水槽间隔8m±0.1m。
本发明还提供了采用所述粉尘路进行测试的方法,包括如下步骤:
a、干附着测试:整车处于干燥状态下通过粉尘路;以30km/h±5km/h的速度匀速通过粉尘路;
b、湿附着测试:将一段路面用水喷淋,且喷淋路和粉尘路之间的连接路长度不小于50米;30km/h±5km/h的速度匀速开车通过;
c、每完成步骤a和b为1个循环;10个循环后对全车进行检查;干附着检查内容包括:乘员舱内灰尘情况、空气滤芯和空调滤芯积灰情况、动力衰减情况和碳罐通气阀、燃油通气管积灰情况;湿附着检查内容为全车各部位的腐蚀严重程度。
本发明的有益效果:1、合理的道路铺设物比例,既能高效模拟扬尘工况,又能降低道路维护频次。2、粉尘产生物铺设在低于路平面的潜坑中,铺设物不易流失,减少道路维护周期。3、粉尘路两边设立减速带,防止粉尘遮蔽视线后,车辆撞到边墙。4、道路两边设置合理的防护路沿高度,可有效阻挡铺设物流失,及聚拢粉尘,保证粉尘向上扩散,同时降低大风对路面的影响。5、合理的道路通过速度设计,控制了扬尘率,同时提高了验证效率。6、道路顶棚及路面的排水设计,有效降低了雨、雪天气对试验效果的影响。7、道路两边的反射安全指示示廓灯可以保证道路行驶安全。采用本发明的粉尘路和测试方法可解决整车道路试验中,样车无固体颗粒附着导致的试验模拟偏差;从而提升了粉尘附着的一致性和试验结果与用户的关联性。
附图说明
图1为本发明粉尘路的截面图;
图2为本发明粉尘路除去遮雨棚的俯视图;
其中,1-顶棚,2-反射安全指示示廓灯,3-立柱,4-路沿, 5-排水槽,6-减速带,7-道路路面,8-路基。
具体实施方式
实施例本发明粉尘路的铺设
如图1和2所示,用于整车道路测试的粉尘路,在路基8上铺设道路7,并在道路7上的设置遮雨棚;所述遮雨棚包括若干立柱3和顶棚1;所述道路中间为最高点,向道路左右两侧倾斜,倾斜度为2%±0.5%;所述道路路面上设置有粉尘层;所述道路7的左右两侧,由内向外依次设有减速带6和路沿2,所述减速带6沿路沿2内侧间隔设置;所述立柱3上设有反射安全指示示廓灯2;所述道路的左右两侧的最外缘还设有排水槽5。
作为优选的实施方式,所述粉尘层厚度为2cm,宽4m;粉尘层的组成按质量比,直径小于1mm的粉尘︰直径1~2.5mm的砂粒︰直径4~8mm的碎石=1︰1︰0.5。其中,所述道路长度为100m,驾驶路面宽5m;道路从上到下依次为厚0.2m±0.01m混凝土面层、厚0.16m±0.01m水泥稳定碎石层和厚0.1m±0.01m碎石承重层。
作为另一优选的实施方式,所述减速带宽0.5m。进一步的,所述路沿宽度0.2m,路沿高度0.5m。
作为另一优选的实施方式,所述顶棚宽度7.6m;所述道路同侧的立柱间隔2m,道路左侧立柱高4.7m,右侧立柱高4.5m,立柱宽度0.2m;立柱到路沿距离0.4m。进一步的,所述反射安全指示示廓灯离地高度1.5m。具体的,所述排水槽宽度0.1m,两排水槽间隔8m。
实施例2 采用本发明粉尘路进行测试
灰尘附着分为干附着和湿附着。可根据验证目的选取。
干附着:整车处于干燥状态下通过粉尘路;以30km/h±5km/h的速度匀速通过粉尘路。
湿附着:进入粉尘路前先通过喷淋路,将整车浸湿,便于粉尘附着。同时,为了不把喷淋路的水带入粉尘,影响粉尘产生,喷淋路和粉尘路之间的连接路长度不小于50米。粉尘路通过速度为30km/h±5km/h。
干附着和湿附着测试各完成一次为1个循环,完成10个循环,对全车进行检查,根据灰尘附着方式不同,检查内容有所区别:
干附着检查内容包括:1)乘员舱内灰尘情况。2)空气滤芯和空调滤芯积灰情况。3)动力衰减情况。4)碳罐通气阀、燃油通气管积灰情况等。
湿附着的作用体现在对整车缝隙腐蚀的加速,需要配合高温高湿的环境舱进行腐蚀加速模拟。检查内容为全车各部位的腐蚀严重程度。
Claims (9)
1.用于整车道路测试的粉尘路,其特征在于,包括道路(7)和设置在道路(7)上的遮雨棚;所述遮雨棚包括若干立柱(3)和顶棚(1);所述道路(7)中间为最高点,向道路左右两侧倾斜,倾斜度为2%±0.5%;所述道路(7)路面上设置有粉尘层;所述道路(7)的左右两侧,由内向外依次设有减速带(6)和路沿(4),所述减速带(6)沿路沿(2)内侧间隔设置;所述立柱(3)上设有反射安全指示示廓灯(2);所述道路(7)的左右两侧的最外缘还设有排水槽(5)。
2.如权利要求1所述的粉尘路,其特征在于,所述粉尘层厚度为2~3cm,宽4m±0.2m;粉尘层的组成按质量比,直径小于1mm的粉尘︰直径1~2.5mm的砂粒︰直径4~8mm的碎石=1︰1︰0.5。
3.如权利要求1所述的粉尘路,其特征在于,所述道路(7)长度为100m±5m,道路的驾驶路面宽5m±0.1m;道路(7)从上到下依次为厚0.2m±0.01m混凝土面层、厚0.16m±0.01m水泥稳定碎石层和厚0.1m±0.01m碎石承重层。
4.如权利要求1所述的粉尘路,其特征在于,所述减速带(6)宽0.5m±0.1m。
5.如权利要求1所述的粉尘路,其特征在于,所述路沿(4)宽度0.2m±0.1m,高度0.5m±0.1m。
6.如权利要求1所述的粉尘路,其特征在于,所述顶棚(1)宽度7.6m±0.1m;所述道路(7)同侧的立柱间隔2m±0.1m,道路左侧立柱高4.7m±0.1m,右侧立柱高4.5m±0.1m,立柱宽度0.1~0.2m;立柱到路沿距离0.4m±0.1m。
7.如权利要求1所述的粉尘路,其特征在于,所述反射安全指示示廓灯(2)离地高度1.5m±0.1m。
8.如权利要求1所述的粉尘路,其特征在于,所述排水槽(5)宽度0.1m±0.01m,两条排水槽(5)间隔8m±0.1m。
9.采用权利要求1~8任一项所述粉尘路进行测试的方法,其特征在于,包括如下步骤:
a、干附着测试:整车处于干燥状态下通过粉尘路;以30km/h±5km/h的速度匀速通过粉尘路;
b、湿附着测试:将一段路面用水喷淋,且喷淋路和粉尘路之间的连接路长度不小于50米;30km/h±5km/h的速度匀速开车通过;
c、每完成步骤a和b为1个循环;10个循环后对全车进行检查;干附着检查内容包括:乘员舱内灰尘情况、空气滤芯和空调滤芯积灰情况、动力衰减情况和碳罐通气阀、燃油通气管积灰情况;湿附着检查内容为全车各部位的腐蚀严重程度。
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