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New complementary results are reported, generalizing those recently published in the literature. In addition, the new concept of entropy production action is proposed. This concept induces new optimums concerning energy and power in the presence of internal irreversibilities inversely proportional to the cycle or transformation durations. This promising approach is related to applications but also to fundamental aspects.<\/jats:p>","DOI":"10.3390\/e24010084","type":"journal-article","created":{"date-parts":[[2022,1,6]],"date-time":"2022-01-06T03:41:32Z","timestamp":1641440492000},"page":"84","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["A New Step in the Optimization of the Chambadal Model of the Carnot Engine"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3308-5528","authenticated-orcid":false,"given":"Michel","family":"Feidt","sequence":"first","affiliation":[{"name":"Laboratory of Energetics, Theoretical and Applied Mechanics (LEMTA), URA CNRS 7563, University of Lorraine, 54518 Vandoeuvre-l\u00e8s-Nancy, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0954-7286","authenticated-orcid":false,"given":"Monica","family":"Costea","sequence":"additional","affiliation":[{"name":"Department of Engineering Thermodynamics, University Politehnica of Bucharest, 060042 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,1,4]]},"reference":[{"key":"ref_1","unstructured":"Carnot, S. (1953). R\u00e9flexion sur la Puissance Motrice du feu et des Machines Propres \u00e0 D\u00e9velopper Cette Puissance, Albert Blanchard. (In French)."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1119\/1.10023","article-title":"Efficiency of a Carnot engine at maximum power output","volume":"43","author":"Curzon","year":"1975","journal-title":"Am. J. Phys."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Feidt, M. (2020). Carnot Cycle and Heat Engine Fundamentals and Applications. Entropy, 22.","DOI":"10.3390\/e22030348"},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Feidt, M. (2017). The History and Perspectives of Efficiency at Maximum Power of the Carnot Engine. 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Phys."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"150603","DOI":"10.1103\/PhysRevLett.105.150603","article-title":"Efficiency at Maximum Power of Low-Dissipation Carnot Engines","volume":"105","author":"Esposito","year":"2010","journal-title":"Phys. Rev. Lett."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"151","DOI":"10.1515\/jnet-2017-0047","article-title":"From Finite Time to Finite Physical Dimensions Thermodynamics: The Carnot Engine and Onsager\u2019s Relations Revisited","volume":"43","author":"Feidt","year":"2018","journal-title":"J. Non-Equilib. Thermodyn."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"042120","DOI":"10.1103\/PhysRevE.97.042120","article-title":"Efficiency at maximum power of a laser quantum heat engine enhanced by noise-induced coherence","volume":"97","author":"Dorfman","year":"2018","journal-title":"Phys. Rev. E"},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Feidt, M., and Costea, M. (2019). Progress in Carnot and Chambadal Modeling of Thermomechanical Engine by Considering Entropy Production and Heat Transfer Entropy. Entropy, 21.","DOI":"10.3390\/e21121232"},{"key":"ref_13","first-page":"211","article-title":"Finite-time thermoeconomic optimization of a non endoreversible heat engine model","volume":"55","year":"2009","journal-title":"Rev. Mex. F\u00eds."},{"key":"ref_14","unstructured":"Chambadal, P. (1957). Les Centrales Nucl\u00e9aires, Armand Colin. (In French)."},{"key":"ref_15","unstructured":"Tondeur, D. (2021, October 25). Optimisation Thermodynamique: \u00c9quipartition de Production d\u2019entropie. (In French)."},{"key":"ref_16","unstructured":"Tondeur, D. (2021, October 25). Optimisation Thermodynamique. Equipartition: Exemples et Applications. (In French)."}],"container-title":["Entropy"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1099-4300\/24\/1\/84\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,13]],"date-time":"2025-10-13T14:12:37Z","timestamp":1760364757000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1099-4300\/24\/1\/84"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,1,4]]},"references-count":16,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2022,1]]}},"alternative-id":["e24010084"],"URL":"https:\/\/doi.org\/10.3390\/e24010084","relation":{},"ISSN":["1099-4300"],"issn-type":[{"value":"1099-4300","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,1,4]]}}}