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Opt."],"published-print":{"date-parts":[[2025,7,1]]},"abstract":"<jats:p>\n                    Laser absorption sensors have been developed for measuring carbon\n\t\t\t\t\tmonoxide (CO), carbon dioxide (CO\n                    <jats:sub>2<\/jats:sub>\n                    ), and unburnt hydrocarbons,\n\t\t\t\t\timmediately downstream of the exhaust valves in an internal combustion\n\t\t\t\t\tengine. A spectroscopic database containing absorption linestrengths\n\t\t\t\t\tand collisional broadening parameters for CO and CO\n                    <jats:sub>2<\/jats:sub>\n                    , as well as absorption cross-sections\n\t\t\t\t\tfor E85 fuel, was developed at engine-relevant temperatures. The\n\t\t\t\t\tsensors were designed with a 31\u00a0kHz bandwidth to measure\n\t\t\t\t\thigh-speed exhaust dynamics with crank-angle resolution. Their utility\n\t\t\t\t\twas demonstrated in the exhaust manifold of a high-performance,\n\t\t\t\t\tsingle-cylinder development engine. At engine-relevant conditions, the\n\t\t\t\t\tmeasurement uncertainties for both the CO and CO\n                    <jats:sub>2<\/jats:sub>\n                    sensors are 10%. These sensors, when\n\t\t\t\t\tcombined with simultaneous temperature, pressure, and water mole\n\t\t\t\t\tfraction measurements, form an exhaust sensor suite, which can provide\n\t\t\t\t\tinsights into rapid processes in the exhaust of an internal combustion\n\t\t\t\t\tengine.\n                  <\/jats:p>","DOI":"10.1364\/ao.564602","type":"journal-article","created":{"date-parts":[[2025,5,29]],"date-time":"2025-05-29T12:00:10Z","timestamp":1748520010000},"page":"5509","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Laser-absorption sensor suite for crank-angle-resolved,\n                    <i>in situ<\/i>\n                    measurements in\u00a0the exhaust of a high-performance internal\u00a0combustion engine\u2014II: CO, CO\n                    <sub>2<\/sub>\n                    , and\u00a0unburned\u00a0hydrocarbons"],"prefix":"10.1364","volume":"64","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4449-7923","authenticated-orcid":true,"given":"Joshua A.","family":"Vandervort","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00f54p054","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5343-7084","authenticated-orcid":true,"given":"Sean","family":"Clees","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00f54p054","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joana P.","family":"Santos","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00f54p054","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4112-6668","authenticated-orcid":true,"given":"Christopher L.","family":"Strand","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00f54p054","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ronald K.","family":"Hanson","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00f54p054","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amani","family":"Ghonim","sequence":"additional","affiliation":[{"name":"Honda Racing Corporation US"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benjamin","family":"French","sequence":"additional","affiliation":[{"name":"Honda Racing Corporation US"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alastair","family":"Gilmour","sequence":"additional","affiliation":[{"name":"Honda Racing Corporation US"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xavier","family":"Ferlet","sequence":"additional","affiliation":[{"name":"Honda Racing Corporation US"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2025,6,25]]},"reference":[{"key":"ao-64-19-5509-R1","doi-asserted-by":"publisher","first-page":"107","DOI":"10.1016\/S0360-1285(01)00009-0","volume":"28","author":"Docquier","year":"2002","journal-title":"Prog. 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All rights, including\n\t\t\t\t\tfor text and data mining (TDM), Artificial Intelligence (AI) training,\n\t\t\t\t\tand similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}