RPA对PFI轻型汽油车RDE高原排放特性试验研究

doi:10.19562/j.chinasae.qcgc.2018.012.004

汽车工程 ›› 2018, Vol. 40 ›› Issue (12): 1398-1404.doi: 10.19562/j.chinasae.qcgc.2018.012.004

RPA对PFI轻型汽油车RDE高原排放特性试验研究

程亮, 徐志寅, 邬建化, 邱晓伟, 谢熙钧

上海汽车集团股份有限公司乘用车公司试验认证部,上海 201804

收稿日期:2017-09-04 出版日期:2018-12-25 发布日期:2018-12-25
通讯作者: 程亮,硕士,E-mail:chengliang@saicmotor.com

An Experimental Study on the Influence of RPA on High-Altitude Region Emission Characteristic of RDE Test for PFI Light Gasoline Vehicle

Cheng Liang, Xu Zhiyin, Wu Jianhua, Qiu Xiaowei, Xie Xijun

Testing and Validation Department, SAIC Motor Passenger Vehicle Company, Shanghai 201804

Received:2017-09-04 Online:2018-12-25 Published:2018-12-25

摘要/Abstract

摘要： 为探讨RPA对PFI汽油车在RDE试验中排放特性影响,采用了AVL-M.O.V.E.轻型车便携式排放测试系统PEMS对某电控进气道多点喷射汽油车分别在西宁高海拔地区进行了平缓、一般和激烈3种驾驶行为下的RDE排放试验研究,试验中未对发动机进行任何改动。结果表明:国标对RDE试验要求的RPA值范围较大,不同RPA值对应的驾驶行为直接影响RDE排放试验结果。RDE冷起动阶段对PN和CO排放的影响较大,且对PN排放的影响大于对气体污染物排放的影响。CO和PN排放随RPA值的变化无明显变化规律;NO_x和CO₂排放量与RPA值呈现正相关。CF(NO_x)＞CF(CO)＞CF(PN),且CF(NO_x)随着RPA值的增加,变化幅度明显增大,高原条件下进行RDE试验,需要注意NO_x排放。RPA值影响CO₂排放在特性曲线图上的分布,RPA值越大,CO₂排放在特性曲线图上的分布越靠近上公差。

关键词: 轻型汽油车, RPA, 实际行驶污染物(RDE), 高原排放特性

Abstract: To explore the influence of RPA (Relative Positive Acceleration) factor on emission characteristics of PFI (Port Fuel Injection ) gasoline vehicles in the RDE (Real Driving Emission) test, RDE emission tests are carried out on an electronically controlled inlet multi-point injection gasoline vehicle using the AVL-M.O.V.E. PEMS(Portable Emission Measurement System)under gentle, normal and intense driving behaviors in Xining high-altitude region respectively, and the gasoline engine is not modified during the tests. The results show that the driving behaviors of different RPA values which are within a large range according to the national standard directly affect the results of the RDE emission test. The cold starting stage of RDE test has great influence on PN and CO emission, with greater influence on PN than on gas pollutants. The variation of CO and PN emission with RPA value is not obvious; however, NO_x and CO₂ emissions are positively correlated with RPA values. CF (NO_x)>CF (CO)>CF(PN), and the change amplitude of CF (NO_x) is significantly increased with the increase of RPA value, thus NO_x emission should be paid attention to during RDE test under the plateau condition. The RPA affects the distribution of CO₂ emission on the characteristic curve. The larger the RPA value, the closer distribution of CO₂ emission on the characteristics curve to the upper tolerance

Key words: light gasoline vehicle, RPA, real driving emission (RDE), high-altitude region emission characteristics

程亮, 徐志寅, 邬建化, 邱晓伟, 谢熙钧. RPA对PFI轻型汽油车RDE高原排放特性试验研究[J]. 汽车工程, 2018, 40(12): 1398-1404.

Cheng Liang, Xu Zhiyin, Wu Jianhua, Qiu Xiaowei, Xie Xijun. An Experimental Study on the Influence of RPA on High-Altitude Region Emission Characteristic of RDE Test for PFI Light Gasoline Vehicle[J]. , 2018, 40(12): 1398-1404.

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RPA对PFI轻型汽油车RDE高原排放特性试验研究

An Experimental Study on the Influence of RPA on High-Altitude Region Emission Characteristic of RDE Test for PFI Light Gasoline Vehicle

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