车用发动机

作者：柳东威，徐小雯，朱庆功，张凯，张靳杰，焦文健

单位：<pstyle=\"margin:0pt\"class=\"MsoNormal\">(1.天津大学机械工程学院，天津300350；2.中汽研汽车检验中心武汉有限公司，湖北武汉430056)"],"article":{"keywordList_cn":["重型柴油车","低负荷","冷起动","便携式排放测试系统","排放测量","颗粒"],"juan":"0","zhaiyao_cn":"使用便携式排放测试系统portableemissionmeasurementsystem，PEMS对3辆重型柴油车进行道路排放测试，以发动机负荷率及CO2排放率作为发动机低负荷或高负荷工况划分依据，结合比排放、瞬态排放等对低负荷工况CO，CO2，NOx和PN23及冷起动过程排放特性进行分析，并探究低负荷工况下PN10比排放变化规律。研究结果表明：使用CO2排放率作为划分依据的低负荷工况更具代表性，低负荷工况下CO，CO2，NOx和PN23比排放值较高，CO，NOx，PN23?易超出标准限值，冷起动过程存在大量高CO和NOx比排放的低负荷工况点，且将PN计数粒径范围下限由23nm降低至10nm后低负荷工况下PN10比排放将会翻倍。\r\n<pstyle=\"margin:0pt\"class=\"MsoNormal\">&nbsp;</p>","endNoteUrl_en":"http://www.cyfdjjournal.com/EN/article/getTxtFile.do?fileType=EndNote&id=10693","reference":"","bibtexUrl_cn":"http://www.cyfdjjournal.com/CN/article/getTxtFile.do?fileType=BibTeX&id=10693","abstractUrl_en":"http://www.cyfdjjournal.com/EN/10.3969/j.issn.1001-2222.2024.06.007","qi":"6","id":10693,"nian":2024,"bianHao":"2024-6-07","zuoZheEn_L":"LIUDongwei，XUXiaowen，ZHUQinggong，ZHANGKai，ZHANGJinjie，JIAOWenjian","juanUrl_en":"http://www.cyfdjjournal.com/EN/Y2024","qiShiYe":"45","qiUrl_cn":"http://www.cyfdjjournal.com/CN/Y2024/V0/I6","lanMu_cn":"栏目","pdfSize":"0","zuoZhe_CN":"柳东威^1,2，徐小雯²，朱庆功²，张凯²，张靳杰²，焦文健²","risUrl_cn":"http://www.cyfdjjournal.com/CN/article/getTxtFile.do?fileType=Ris&id=10693","title_cn":"基于PEMS的重型柴油车低负荷和冷起动工况排放特性研究","doi":"10.3969/j.issn.1001-2222.2024.06.007","jieShuYe":"51","keywordList_en":["heavy-dutydieselvehicle；lowload；coldstart；PEMS；emissionmeasurement；particle<br/>\r\n<pstyle=\"margin:0pt\"class=\"MsoNormal\">&nbsp"],"endNoteUrl_cn":"http://www.cyfdjjournal.com/CN/article/getTxtFile.do?fileType=EndNote&id=10693","zhaiyao_en":"<pstyle=\"margin:0pt\"class=\"MsoNormal\">Byusingaportableemissionmeasurementsystem(PEMS),theroad-basedemissiontestswereconductedonthreeheavy-dutydieselvehicles.TheengineloadrateandCO2emissionratewereusedasthereferencefordividingtheengineintolowloadorhighloadconditions.Combinedwithspecificemissions,transientemissionsandetc,theemissioncharacteristicsofCO,CO2,NOx,PN23underlowloadconditionsandduringcoldstartprocesswereanalyzed,andthevariationlawofPN10&nbsp;specificemissionsunderlowloadconditionswasexplored.TheresearchresultsindicatethatthelowloadconditionbasedonCO2emissionrateismorerepresentative.Underlowloadconditions,thespecificemissionsofCO,CO2,NOx,andPN23&nbsp;arehigher,andCO,NOx,andPN23&nbsp;arepronetoexceedthestandardlimits.TherearealargenumberoflowloadworkingpointswithhighCOandNOx&nbsp;specificemissionsduringthecoldstartprocess.Furthermore,reducingthelowerlimitofPNcountingparticlesizefrom23nmto10nmwillresultinadoublingofPN10&nbsp;specificemissionsunderlowloadconditions.</p>","bibtexUrl_en":"http://www.cyfdjjournal.com/EN/article/getTxtFile.do?fileType=BibTeX&id=10693","abstractUrl_cn":"http://www.cyfdjjournal.com/CN/10.3969/j.issn.1001-2222.2024.06.007","zuoZheCn_L":"柳东威，徐小雯，朱庆功，张凯，张靳杰，焦文健","juanUrl_cn":"http://www.cyfdjjournal.com/CN/Y2024","lanMu_en":"","qiUrl_en":"http://www.cyfdjjournal.com/EN/Y2024/V0/I6","zuoZhe_EN":"<pstyle=\"margin:0pt\"class=\"MsoNormal\"><fontface=\"Calibri\">LIUDongwei</font><fontface=\"Calibri\">^1,2</font><fontface=\"宋体\">，</font><fontface=\"Calibri\">XUXiaowen</font><fontface=\"Calibri\">²</font><fontface=\"宋体\">，</font><fontface=\"Calibri\">ZHUQinggong</font><fontface=\"宋体\">²</font><fontface=\"宋体\">，</font><fontface=\"Calibri\">ZHANGKai</font><fontface=\"Calibri\">²</font><fontface=\"宋体\">，</font><fontface=\"Calibri\">ZHANGJinjie</font><fontface=\"Calibri\">²</font><fontface=\"宋体\">，</font><fontface=\"Calibri\">JIAOWenjian</font><fontface=\"Calibri\">²</font>

关键词：重型柴油车；低负荷；冷起动；便携式排放测试系统；排放测量；颗粒

使用便携式排放测试系统（portable emission measurement system，PEMS）对3辆重型柴油车进行道路排放测试，以发动机负荷率及CO2排放率作为发动机低负荷或高负荷工况划分依据，结合比排放、瞬态排放等对低负荷工况CO，CO2，NOx和PN23及冷起动过程排放特性进行分析，并探究低负荷工况下PN10比排放变化规律。研究结果表明：使用CO2排放率作为划分依据的低负荷工况更具代表性，低负荷工况下CO，CO2，NOx和PN23比排放值较高，CO，NOx，PN23?易超出标准限值，冷起动过程存在大量高CO和NOx比排放的低负荷工况点，且将PN计数粒径范围下限由23 nm降低至10 nm后低负荷工况下PN10比排放将会翻倍。 &nbsp;

来源：2024年第6期

《车用发动机》期刊编辑部

查看车用发动机杂志2024年第6期