{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,5]],"date-time":"2025-11-05T05:43:15Z","timestamp":1762321395985,"version":"build-2065373602"},"publisher-location":"400 Commonwealth Drive, Warrendale, PA, United States","reference-count":5,"publisher":"SAE International","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>&lt;div class=\"htmlview paragraph\"&gt;When the exhaust valve of a conventional spark ignition engine opens at the end of the expansion stroke, a large quantity of high pressure exhaust gas is freed to the atmosphere, without using its availability. An engine that could use this lost energy should have a better efficiency.&lt;\/div&gt;\n&lt;div class=\"htmlview paragraph\"&gt;The equations for an over-expanded cycle (Miller cycle) are developed in this paper, together with equations for the Otto cycle, diesel cycle and dual cycle, all at part load, so they can be compared.&lt;\/div&gt;\n&lt;div class=\"htmlview paragraph\"&gt;Furthermore, indicated cycle thermodynamical comparisons of a S.I. engine at part load (Otto cycle at half load), a S.I. engine at WOT (with half displacement) and two over-expanded S.I. engines (with different compression strokes) are examined and compared, with the aim of extending the referred theoretical cycle comparisons.&lt;\/div&gt;<\/jats:p>","DOI":"10.4271\/2004-01-0617","type":"proceedings-article","created":{"date-parts":[[2010,8,11]],"date-time":"2010-08-11T18:45:23Z","timestamp":1281552323000},"source":"Crossref","is-referenced-by-count":43,"title":["Thermodynamic Analysis of an Over-Expanded Engine"],"prefix":"10.4271","volume":"1","author":[{"given":"Jorge J. G.","family":"Martins","sequence":"first","affiliation":[{"name":"Dept. Eng. Mecanica - Un. Minho"}]},{"given":"Krisztina","family":"Uzuneanu","sequence":"additional","affiliation":[{"name":"Universitatea \u201cDunarea de Jos\u201d of Galati"}]},{"given":"Bernardo Sousa","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Universidade do Minho"}]},{"given":"Ondrej","family":"Jasasky","sequence":"additional","affiliation":[{"name":"Thecnical University of Liberec"}]}],"member":"2796","published-online":{"date-parts":[[2004,3,8]]},"reference":[{"key":"ref0","unstructured":"Ferguson,   C.R. Kirkpatrick,   A.T. Internal Combustion Engines J.Wiley&Sons 2001"},{"key":"ref1","doi-asserted-by":"crossref","unstructured":"Flierl,   R. Kluting,   M. The Third Generation of Valvetrains-New Fully Variable Valvetrains for Throttle-Free Load Control SAE  2000-01-1227 2000","DOI":"10.4271\/2000-01-1227"},{"key":"ref2","doi-asserted-by":"crossref","unstructured":"Drangel,   H. Reinmann,   R. Olofsson,   E. The Variable Compression (Svc) and the Combustion Control (Scc) - Two Ways to Improve Fuel Economy and Still Comply With World-Wide Emission Requirements SAE  2002-01-0996 2002","DOI":"10.4271\/2002-01-0996"},{"key":"ref3","unstructured":"Heywood,   B.J. Internal Combustion Engines Fundamentals McGraw-Hill 1988"},{"key":"ref4","doi-asserted-by":"crossref","unstructured":"Hatamura,   K. Hayakawa,   M. A study of the improvement effect of Miller-cycle on mean effective pressure limit for high-pressure supercharged gasoline engines JSAE Review 18 1997","DOI":"10.1016\/S0389-4304(96)00069-0"}],"event":{"name":"SAE 2004 World Congress & Exhibition","start":{"date-parts":[[2004,3,8]]},"number":"107196","location":"Detroit, Michigan, United States","acronym":"ANNUAL"},"container-title":["SAE Technical Paper Series"],"original-title":[],"link":[{"URL":"https:\/\/saemobilus.sae.org\/downloads\/papers\/2004-01-0617\/Full%20Text%20PDF","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,6]],"date-time":"2025-10-06T08:33:31Z","timestamp":1759739611000},"score":1,"resource":{"primary":{"URL":"https:\/\/saemobilus.sae.org\/papers\/thermodynamic-analysis-expanded-engine-2004-01-0617"}},"subtitle":[],"proceedings-subject":"SAE Technical Paper Series","short-title":[],"issued":{"date-parts":[[2004,3,8]]},"references-count":5,"URL":"https:\/\/doi.org\/10.4271\/2004-01-0617","relation":{},"ISSN":["0148-7191","2688-3627"],"issn-type":[{"type":"print","value":"0148-7191"},{"type":"electronic","value":"2688-3627"}],"subject":[],"published":{"date-parts":[[2004,3,8]]},"article-number":"2004-01-0617"}}