本文中对同一辆带有车载加油蒸气回收(ORVR)系统的汽车分别进行3次EPA法规和国六法规的加油排放试验(预处理工况分别为FTP和WLTC),并采集脱附工况下的炭罐脱附流量和加油排放量.结果表明,FTP工况的炭罐脱附总量(981.89,993.25和987.54L)大于WLTC工况(867.88,881.31和876.8L),且EPA加油排放结果(0.0331,0.0367和0.0396g/L)远小于国六试验(0.111,0.103和0.107g/L).说明在FTP工况下车辆的脱附效果较好,加油试验前车辆富余的炭罐工作能力越大,越能有效控制加油排放.%In this paper, the same vehicle with onboard refueling vapor recovery ( ORVR) system is used to conduct three refueling emissions tests with both EPA and China VI regulation and precondition of FTP and WLTC respectively, and canister purge flow and refueling emissions are collected. The results show that the canister purge flows with FTP condition (981.89, 993.25 and 987.54L) are larger than that with WLTC condition (867.88, 881.31 and 876.8L), and the refueling emissions with EPA-OPVR (0.0331,0.0367 and 0.0396g/L) are less than that with China VI-ORVR(0.111,0.103 and 0.107 g/L), demonstrating that the purge with FTP cycle can get better results, and the vehicle with larger spare canister work capacity before refueling test can more effectively con-trol refueling emission.
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