{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T21:04:35Z","timestamp":1790802275029,"version":"4.1.0"},"reference-count":15,"publisher":"American Chemical Society (ACS)","issue":"16","license":[{"start":{"date-parts":[[2023,4,14]],"date-time":"2023-04-14T00:00:00Z","timestamp":1681430400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100008871","name":"Yunnan Provincial Science and Technology Department","doi-asserted-by":"publisher","award":["202102AB080007"],"award-info":[{"award-number":["202102AB080007"]}],"id":[{"id":"10.13039\/501100008871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["52066008"],"award-info":[{"award-number":["52066008"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Yunnan Province","award":["2018FA030"],"award-info":[{"award-number":["2018FA030"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,4,25]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Nitrogen oxides (NOx) are the main emissions of diesel engines. Selective catalytic reduction (SCR) is the main technology used to reduce NOx emissions from diesel engines. NOx conversion efficiency and ammonia (NH3) escape are the main indicators to evaluate SCR performance. In this work, the effects of diesel engine exhaust temperature and exhaust mass flow rate on the SCR performance under different atmospheric pressures were studied by the combination method of experiment and one-dimensional numerical simulation. At the same time, the response surface method (RSM) was used to analyze the interaction of atmospheric pressure, exhaust temperature, and exhaust mass flow rate on the SCR performance. The results show that the lower the atmospheric pressure, the lower the NOx conversion efficiency and ammonia escape. Under the same exhaust temperature, the lower the atmospheric pressure, the smaller the impact of exhaust mass flow rate on NOx conversion efficiency. According to the RSM results, the optimal NOx conversion efficiency is 78.6% under the combination working conditions of an atmospheric pressure of 100 kPa, exhaust temperature of 395 \u00b0C, and exhaust mass flow rate of 250 kg\/h, and the NH3 escape is also at a low level of 1.7 g\/cycle.<\/jats:p>","DOI":"10.1021\/acsomega.3c00233","type":"journal-article","created":{"date-parts":[[2023,4,14]],"date-time":"2023-04-14T14:49:05Z","timestamp":1681483745000},"page":"14549-14557","source":"Crossref","is-referenced-by-count":7,"title":["Study on Diesel\nEngine Selective Catalytic Reduction\nPerformance at Different Atmospheric Pressures Using the Response\nSurface Method"],"prefix":"10.1021","volume":"8","author":[{"given":"Yuhua","family":"Bi","sequence":"first","affiliation":[{"name":"Kunming University of Science and Technology , , No. 727 Jingming South Road, Chenggong District , , ,","place":["Kunming, Yunnan\nProvince, China, 650500"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3479-3750","authenticated-orcid":true,"given":"Jie","family":"Yan","sequence":"additional","affiliation":[{"name":"Kunming University of Science and Technology , , No. 727 Jingming South Road, Chenggong District , , ,","place":["Kunming, Yunnan\nProvince, China, 650500"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shaohua","family":"Liu","sequence":"additional","affiliation":[{"name":"Kunming University of Science and Technology , , No. 727 Jingming South Road, Chenggong District , , ,","place":["Kunming, Yunnan\nProvince, China, 650500"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ben","family":"Xiao","sequence":"additional","affiliation":[{"name":"Kunming University of Science and Technology , , No. 727 Jingming South Road, Chenggong District , , ,","place":["Kunming, Yunnan\nProvince, China, 650500"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lizhong","family":"Shen","sequence":"additional","affiliation":[{"name":"Kunming University of Science and Technology , , No. 727 Jingming South Road, Chenggong District , , ,","place":["Kunming, Yunnan\nProvince, China, 650500"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peng","family":"Wang","sequence":"additional","affiliation":[{"name":"Kunming University of Science and Technology , , No. 727 Jingming South Road, Chenggong District , , ,","place":["Kunming, Yunnan\nProvince, China, 650500"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuexuan","family":"Nie","sequence":"additional","affiliation":[{"name":"Kunming University of Science and Technology , , No. 727 Jingming South Road, Chenggong District , , ,","place":["Kunming, Yunnan\nProvince, China, 650500"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2023,4,14]]},"reference":[{"issue":"3","key":"2026081412084393800_cit1","doi-asserted-by":"publisher","first-page":"350","DOI":"10.19562\/j.chinasae.qcgc.2021.03.007","article-title":"Study on the\neffects of exhaust temperature, exhaust mass flow rate\nand altitude on NOx conversion rate and\nNH3 slip of SCR system","volume":"43","author":"Bi","year":"2021","journal-title":"Automot.\nEng."},{"issue":"4","key":"2026081412084393800_cit2","first-page":"326","article-title":"Experimental study\non the SOF coverage of SCR carrier of diesel engine","volume":"39","author":"Wang","year":"2021","journal-title":"Trans. CSICE"},{"issue":"3","key":"2026081412084393800_cit3","doi-asserted-by":"publisher","first-page":"36","DOI":"10.13949\/j.cnki.nrjgc.2018.03.006","article-title":"Effects of\natmospheric pressure\/VNT\/EGR on performance and emissions of a vehicle\ndiesel engine","volume":"39","author":"Yang","year":"2018","journal-title":"Chin. Intern. Combust. Engine\nEng."},{"issue":"14","key":"2026081412084393800_cit4","doi-asserted-by":"publisher","first-page":"121","DOI":"10.11975\/j.issn.1002-6819.2020.14.015","article-title":"Experimental study\non temperature characteristics of DPF substrate\nfor active regeneration in plateau environment","volume":"36","author":"Wan","year":"2020","journal-title":"Trans. Chin. Soc. Agric. Eng."},{"issue":"30","key":"2026081412084393800_cit5","doi-asserted-by":"publisher","first-page":"11334","DOI":"10.1021\/acs.iecr.1c01150","article-title":"Influence\nof Operating Conditions on Urea Deposit Formation in the Urea-SCR\nSystem on a Diesel Engine Exhaust-like Test Bench","volume":"60","author":"Liu","year":"2021","journal-title":"I&EC Res."},{"issue":"36","key":"2026081412084393800_cit6","doi-asserted-by":"publisher","first-page":"23083","DOI":"10.1021\/acsomega.1c02396","article-title":"Experimental\nResearch on Distribution Characteristics of NOx Conversion Efficiency of a Diesel Engine SCR Catalyst","volume":"6","author":"Wang","year":"2021","journal-title":"ACS omega"},{"key":"2026081412084393800_cit7","doi-asserted-by":"publisher","first-page":"124747","DOI":"10.1016\/j.fuel.2022.124747","article-title":"Impacts of different\nexhaust thermal management methods on diesel engine and SCR performance\nat different altitude levels","volume":"324","author":"Nie","year":"2022","journal-title":"Fuel."},{"issue":"7","key":"2026081412084393800_cit8","doi-asserted-by":"publisher","first-page":"662","DOI":"10.1089\/ees.2020.0197","article-title":"Simulation Study of\nAmmonia Storage Characteristics of Selective Catalytic Reduction for\nDiesel","volume":"38","author":"Tan","year":"2021","journal-title":"Engines. Environ. Eng. Sci.."},{"key":"2026081412084393800_cit9","doi-asserted-by":"publisher","first-page":"125657","DOI":"10.1016\/j.fuel.2022.125657","article-title":"The effect of ammonia gas and UWS\ninjection on the N2O formation in diesel engine after-treatment\nsystems under steady and transient conditions","volume":"330","author":"Raza","year":"2022","journal-title":"Fuel."},{"key":"2026081412084393800_cit10","doi-asserted-by":"publisher","first-page":"1118","DOI":"10.1007\/s11356-021-15592-w","article-title":"Experimental\ndemonstration of NOx reduction and ammonia\nslip for diesel engine SCR system","volume":"29","author":"Yue","year":"2022","journal-title":"Environ.\nSci. Pollut. Res."},{"issue":"26","key":"2026081412084393800_cit11","doi-asserted-by":"publisher","first-page":"22291","DOI":"10.1021\/acsomega.2c01123","article-title":"Effect of\nExhaust Gas Recirculation Combined with Selective Catalytic Reduction\non NOx Emission Characteristics and Their\nMatching Optimization of a Heavy-Duty Diesel Engine","volume":"7","author":"Lou","year":"2022","journal-title":"ACS omega"},{"issue":"4","key":"2026081412084393800_cit12","doi-asserted-by":"publisher","first-page":"2441","DOI":"10.1021\/acscatal.1c05661","article-title":"Copper single atom-triggered\nniobia\u2013ceria catalyst for efficient low-temperature reduction\nof nitrogen oxides","volume":"12","author":"Xie","year":"2022","journal-title":"ACS Catal."},{"key":"2026081412084393800_cit13","doi-asserted-by":"publisher","first-page":"125405","DOI":"10.1016\/j.fuel.2022.125405","article-title":"Effect of mixer structure\non liquid film formation and NOx conversion\nefficiency in Selective Catalytic Reduction system","volume":"330","author":"Fu","year":"2022","journal-title":"Fuel."},{"issue":"5","key":"2026081412084393800_cit14","doi-asserted-by":"publisher","first-page":"108530","DOI":"10.1016\/j.jece.2022.108530","article-title":"The research on dynamic performance of single channel selective catalytic\nreduction system with different shapes","volume":"10","author":"Luo","year":"2022","journal-title":"J. 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