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整(zheng)车高(gao)低温循环测试方法：

目的及(ji)应(ying)用范围

这(zhei)是一个加速试验(yan)(yan)，模拟车辆中大量的(de)(de)(de)(de)慢温(wen)度(du)循环。对应(ying)实际(ji)车辆温(wen)度(du)循环，用较快的(de)(de)(de)(de)温(wen)度(du)变(bian)化(hua)率及更(geng)宽的(de)(de)(de)(de)温(wen)度(du)变(bian)化(hua)范围，加速是可行(xing)的(de)(de)(de)(de)。失效(xiao)模式为因老化(hua)和不同的(de)(de)(de)(de)温(wen)度(du)膨胀系数导致的(de)(de)(de)(de)材料裂化(hua)或密(mi)封失效(xiao)。本(ben)试验(yan)(yan)将导致机(ji)械缺陷（裂缝(feng)），不要求带电工作。

气法分为(wei)两种方式，一种是手动转换，在高(gao)温(wen)(wen)(wen)箱和低(di)温(wen)(wen)(wen)箱之间(jian)转换产品；另一种是冲击(ji)试验箱，通过开关冷热箱循环(huan)风(feng)门或其他类(lei)似手段实(shi)现温(wen)(wen)(wen)度(du)转换。温(wen)(wen)(wen)度(du)上限和温(wen)(wen)(wen)度(du)下限是产品的储存(cun)顶点(dian)温(wen)(wen)(wen)度(du)值。

液体法在(zai)吊(diao)篮式中实现，将产品放入吊(diao)篮中，根据需要浸(jin)入不(bu)同温(wen)度的(de)液体中。适用于玻璃金属密封件及类似产品。

本次试验需要考虑几个(ge)重要参数：循环次数、温度转换时(shi)(shi)间、温度保持(chi)时(shi)(shi)间和(he)温度限值

常(chang)温试验(yan)：将试验(yan)车辆置于整车步入式环(huan)境(jing)(jing)仓内，使环(huan)境(jing)(jing)仓在30-60分钟内稳定在15～25℃，并恒温4-8小时；对(dui)(dui)整(zheng)车外部及(ji)内部间(jian)(jian)隙、段差进(jin)(jin)行测(ce)(ce)(ce)量(liang)；对(dui)(dui)整(zheng)车静态(tai)功(gong)(gong)(gong)能(neng)(neng)(neng)进(jin)(jin)行检(jian)(jian)(jian)查(cha)，分别(bie)测(ce)(ce)(ce)量(liang)电(dian)动车窗(chuang)开(kai)启(qi)(qi)(qi)(qi)与关(guan)闭(bi)的(de)(de)(de)(de)时间(jian)(jian)，检(jian)(jian)(jian)测(ce)(ce)(ce)车窗(chuang)的(de)(de)(de)(de)防(fang)夹力；以一定(ding)的(de)(de)(de)(de)加载力对(dui)(dui)门护板扶手进(jin)(jin)行垂向施(shi)加力，结(jie)束时对(dui)(dui)车门护板及(ji)卡扣进(jin)(jin)行检(jian)(jian)(jian)测(ce)(ce)(ce)；对(dui)(dui)于空气撑杆的(de)(de)(de)(de)发动机罩及(ji)后背(bei)门测(ce)(ce)(ce)量(liang)开(kai)启(qi)(qi)(qi)(qi)力与关(guan)闭(bi)力；对(dui)(dui)于电(dian)动撑杆的(de)(de)(de)(de)发动机罩及(ji)后背(bei)门测(ce)(ce)(ce)量(liang)防(fang)夹力；开(kai)启(qi)(qi)(qi)(qi)组合仪表并(bing)(bing)(bing)(bing)(bing)检(jian)(jian)(jian)查(cha)功(gong)(gong)(gong)能(neng)(neng)(neng)的(de)(de)(de)(de)可(ke)(ke)用(yong)性(xing)(xing)(xing)；开(kai)启(qi)(qi)(qi)(qi)近光(guang)、远光(guang)、雾(wu)灯(deng)(deng)、日行灯(deng)(deng)并(bing)(bing)(bing)(bing)(bing)检(jian)(jian)(jian)查(cha)功(gong)(gong)(gong)能(neng)(neng)(neng)的(de)(de)(de)(de)可(ke)(ke)用(yong)性(xing)(xing)(xing)；将车辆(liang)档位挂入倒(dao)档并(bing)(bing)(bing)(bing)(bing)检(jian)(jian)(jian)查(cha)功(gong)(gong)(gong)能(neng)(neng)(neng)的(de)(de)(de)(de)可(ke)(ke)用(yong)性(xing)(xing)(xing)；开(kai)启(qi)(qi)(qi)(qi)刮(gua)水器并(bing)(bing)(bing)(bing)(bing)检(jian)(jian)(jian)查(cha)功(gong)(gong)(gong)能(neng)(neng)(neng)的(de)(de)(de)(de)可(ke)(ke)用(yong)性(xing)(xing)(xing)；开(kai)启(qi)(qi)(qi)(qi)音响并(bing)(bing)(bing)(bing)(bing)检(jian)(jian)(jian)查(cha)功(gong)(gong)(gong)能(neng)(neng)(neng)的(de)(de)(de)(de)可(ke)(ke)用(yong)性(xing)(xing)(xing)；开(kai)启(qi)(qi)(qi)(qi)电(dian)子驻车功(gong)(gong)(gong)能(neng)(neng)(neng)并(bing)(bing)(bing)(bing)(bing)检(jian)(jian)(jian)查(cha)功(gong)(gong)(gong)能(neng)(neng)(neng)的(de)(de)(de)(de)可(ke)(ke)用(yong)性(xing)(xing)(xing)；开(kai)启(qi)(qi)(qi)(qi)和关(guan)闭(bi)天窗(chuang)并(bing)(bing)(bing)(bing)(bing)检(jian)(jian)(jian)查(cha)功(gong)(gong)(gong)能(neng)(neng)(neng)的(de)(de)(de)(de)可(ke)(ke)用(yong)性(xing)(xing)(xing)，检(jian)(jian)(jian)测(ce)(ce)(ce)天窗(chuang)的(de)(de)(de)(de)防(fang)夹力并(bing)(bing)(bing)(bing)(bing)记录(lu)；开(kai)启(qi)(qi)(qi)(qi)及(ji)关(guan)闭(bi)加油口盖并(bing)(bing)(bing)(bing)(bing)检(jian)(jian)(jian)查(cha)功(gong)(gong)(gong)能(neng)(neng)(neng)的(de)(de)(de)(de)可(ke)(ke)用(yong)性(xing)(xing)(xing)；开(kai)启(qi)(qi)(qi)(qi)及(ji)关(guan)闭(bi)后视镜折叠功(gong)(gong)(gong)能(neng)(neng)(neng)并(bing)(bing)(bing)(bing)(bing)检(jian)(jian)(jian)查(cha)功(gong)(gong)(gong)能(neng)(neng)(neng)的(de)(de)(de)(de)可(ke)(ke)用(yong)性(xing)(xing)(xing)；开(kai)启(qi)(qi)(qi)(qi)无钥匙(chi)进(jin)(jin)入功(gong)(gong)(gong)能(neng)(neng)(neng)并(bing)(bing)(bing)(bing)(bing)检(jian)(jian)(jian)查(cha)功(gong)(gong)(gong)能(neng)(neng)(neng)的(de)(de)(de)(de)可(ke)(ke)用(yong)性(xing)(xing)(xing)；

高温试验：完成常温试验后，使环境仓在30-60分钟内稳定在45～55℃，并恒温4-8小时；开启全光谱阳光模拟，光照强度设定为(wei)810～910w/m2；对(dui)整(zheng)(zheng)车(che)(che)外(wai)部(bu)(bu)及(ji)(ji)(ji)内部(bu)(bu)间隙、段差进(jin)(jin)(jin)行(xing)(xing)测(ce)(ce)量(liang)；对(dui)整(zheng)(zheng)车(che)(che)静态(tai)功(gong)(gong)(gong)能(neng)进(jin)(jin)(jin)行(xing)(xing)测(ce)(ce)试，分(fen)别测(ce)(ce)量(liang)电(dian)动(dong)车(che)(che)窗(chuang)开(kai)启与关(guan)(guan)(guan)(guan)闭(bi)(bi)的(de)(de)(de)时(shi)间，检(jian)测(ce)(ce)车(che)(che)窗(chuang)的(de)(de)(de)防(fang)(fang)(fang)夹(jia)力(li)；由(you)(you)外(wai)部(bu)(bu)以(yi)(yi)一(yi)定(ding)速度(du)关(guan)(guan)(guan)(guan)闭(bi)(bi)各个车(che)(che)门，由(you)(you)内部(bu)(bu)以(yi)(yi)恒(heng)定(ding)的(de)(de)(de)加(jia)载(zai)力(li)关(guan)(guan)(guan)(guan)闭(bi)(bi)各个车(che)(che)门，结(jie)束时(shi)对(dui)车(che)(che)门护板(ban)及(ji)(ji)(ji)卡扣进(jin)(jin)(jin)行(xing)(xing)检(jian)测(ce)(ce)；对(dui)于空气撑杆的(de)(de)(de)发动(dong)机罩及(ji)(ji)(ji)后(hou)(hou)背(bei)门测(ce)(ce)量(liang)开(kai)启力(li)与关(guan)(guan)(guan)(guan)闭(bi)(bi)力(li)，对(dui)于电(dian)动(dong)撑杆的(de)(de)(de)发动(dong)机罩及(ji)(ji)(ji)后(hou)(hou)背(bei)门测(ce)(ce)量(liang)防(fang)(fang)(fang)夹(jia)力(li)；由(you)(you)外(wai)部(bu)(bu)以(yi)(yi)一(yi)定(ding)的(de)(de)(de)速度(du)关(guan)(guan)(guan)(guan)闭(bi)(bi)后(hou)(hou)背(bei)门，结(jie)束时(shi)对(dui)后(hou)(hou)背(bei)门护板(ban)及(ji)(ji)(ji)卡扣进(jin)(jin)(jin)行(xing)(xing)检(jian)测(ce)(ce)；由(you)(you)外(wai)部(bu)(bu)以(yi)(yi)一(yi)定(ding)的(de)(de)(de)力(li)施(shi)加(jia)在(zai)前保险杠的(de)(de)(de)竖直面上，结(jie)束时(shi)对(dui)前保险杠进(jin)(jin)(jin)行(xing)(xing)检(jian)测(ce)(ce)；在(zai)门槛盖板(ban)上施(shi)加(jia)一(yi)定(ding)的(de)(de)(de)垂向(xiang)力(li)，结(jie)束后(hou)(hou)对(dui)门槛盖板(ban)进(jin)(jin)(jin)行(xing)(xing)检(jian)测(ce)(ce)；开(kai)启音响并(bing)检(jian)查(cha)(cha)功(gong)(gong)(gong)能(neng)的(de)(de)(de)可用性(xing)；开(kai)启电(dian)子驻(zhu)车(che)(che)功(gong)(gong)(gong)能(neng)并(bing)检(jian)查(cha)(cha)功(gong)(gong)(gong)能(neng)的(de)(de)(de)可用性(xing)；开(kai)启和(he)关(guan)(guan)(guan)(guan)闭(bi)(bi)天窗(chuang)并(bing)检(jian)查(cha)(cha)功(gong)(gong)(gong)能(neng)的(de)(de)(de)可用性(xing)，检(jian)测(ce)(ce)天窗(chuang)的(de)(de)(de)防(fang)(fang)(fang)夹(jia)力(li)并(bing)记录；开(kai)启及(ji)(ji)(ji)关(guan)(guan)(guan)(guan)闭(bi)(bi)加(jia)油(you)口盖并(bing)检(jian)查(cha)(cha)功(gong)(gong)(gong)能(neng)的(de)(de)(de)可用性(xing)；开(kai)启及(ji)(ji)(ji)关(guan)(guan)(guan)(guan)闭(bi)(bi)后(hou)(hou)视镜折叠功(gong)(gong)(gong)能(neng)并(bing)检(jian)查(cha)(cha)功(gong)(gong)(gong)能(neng)的(de)(de)(de)可用性(xing)；第三步(bu)，常温复(fu)测(ce)(ce)：完(wan)成高温测(ce)(ce)试后(hou)(hou)，使(shi)环境仓在(zai)30-60分钟内稳(wen)定(ding)在15～25℃，并恒温(wen)4-8小时；对(dui)整车外部(bu)(bu)及内(nei)部(bu)(bu)间(jian)隙、段差进行测量。