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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">omna</journal-id><journal-title-group><journal-title xml:lang="ru">Омский научный вестник</journal-title><trans-title-group xml:lang="en"><trans-title>Omsk Scientific Bulletin</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1813-8225</issn><issn pub-type="epub">2541-7541</issn><publisher><publisher-name>Омский государственный технический университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25206/1813-8225-2024-191-39-47</article-id><article-id custom-type="edn" pub-id-type="custom">EPGKGM</article-id><article-id custom-type="elpub" pub-id-type="custom">omna-158</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАШИНОСТРОЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MECHANICAL ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Гармонический анализ крутящего момента двигателя ЯМЗ-5340</article-title><trans-title-group xml:lang="en"><trans-title>Harmonic analysis of the torque of the YAMZ-5340 engine</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Макушев</surname><given-names>Ю. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Makushev</surname><given-names>Yu. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Макушев Юрий Петрович - кандидат технических наук, доцент (Россия), доцент кафедры «Автоматизация и энергетическое машиностроение» СибАДИ. SPIN-код: 4777-2831. AuthorID (РИНЦ): 650763. AuthorID (SCOPUS): 57210975800.</p><p>Омск</p></bio><bio xml:lang="en"><p>Makushev Yuri Petrovich - Candidate of Technical Sciences, Associate Professor, Associate Professor of Automation and Power Engineering Department, SibADI. SPIN-code: 4777-2831. AuthorID (RSCI): 650763. AuthorID (SCOPUS): 57210975800.</p><p>Omsk</p></bio><email xlink:type="simple">makushev321@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9673-1750</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Полякова</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Polyakova</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Полякова Татьяна Анатольевна - кандидат педагогических наук, доцент (Россия), доцент кафедры «Физика и математика» СибАДИ; доцент кафедры «Прикладная математика и фундаментальная информатика». SPIN-код: 4090-8339. AuthorID (РИНЦ): 652910. AuthorID (SCOPUS): 57287283100.</p><p>Омск</p></bio><bio xml:lang="en"><p> </p><p>Polyakova Tatiana Anatolyevna - Candidate of Pedagogical Sciences, Associate Professor, Associate Professor of Physics and Mathematics Department, SibADI, Omsk; Associate Professor of Applied Mathematics and Fundamental Informatics Department, Omsk State Technical University, PIN-code: 4090-8339. AuthorID (RSCI): 652910. AuthorID (SCOPUS): 57287283100.</p><p>Omsk</p></bio><email xlink:type="simple">ta_polyakova@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Сибирский государственный автомобильно-дорожный университет<country>Россия</country></aff><aff xml:lang="en">Siberian State Automobile and Highway University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>30</day><month>09</month><year>2024</year></pub-date><volume>0</volume><issue>3</issue><fpage>39</fpage><lpage>47</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Макушев Ю.П., Полякова Т.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Макушев Ю.П., Полякова Т.А.</copyright-holder><copyright-holder xml:lang="en">Makushev Y.P., Polyakova T.A.</copyright-holder><license license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://onv.omgtu.ru/jour/article/view/158">https://onv.omgtu.ru/jour/article/view/158</self-uri><abstract><p>Цель исследования заключается в поиске методики и проведении на её основе гармонического анализа крутящего момента двигателя внутреннего сгорания для последующего определения резонансных колебаний коленчатого вала. Приведена методика расчета гармоник крутящего момента двигателя на примере дизельного двигателя ЯМЗ-5340 мощностью 100 кВт при частоте вращения коленчатого вала 2300 мин–1. На основе результатов теплового и динамического расчета двигателя ЯМЗ-5340 построен график изменения его крутящего момента и произведен расчет гармоник первого и второго порядков. Определены частоты собственных и вынужденных колебаний коленчатого вала и его резонирующая критическая частота вращения. Определён номер гармоники крутящего момента, которая по частоте вынужденных колебаний совпадет с частотой собственных колебаний и вызывает резонанс. Результаты исследования могут быть применены при проектировании и доводке двигателей с целью расчёта и снижения крутильных колебаний.</p></abstract><trans-abstract xml:lang="en"><p>The purpose of the study is to find a technique and conduct on its basis a harmonic analysis of the torque of an internal combustion engine for the subsequent determination of resonant vibrations of the crankshaft. The method of calculating the harmonics of the engine torque is given on the example of a YaMZ-5340 diesel engine with a power of 100 kW at a crankshaft rotation speed of 2300 min-1. Based on the results of thermal and dynamic calculation of the YaMZ-5340 engine, a graph of changes in its torque is constructed and harmonics of the first and second orders are calculated. The frequencies of natural and forced vibrations of the crankshaft and its resonant critical rotation frequency are determined. The number of the torque harmonic has been determined, which, according to the frequency of forced vibrations, coincides with the frequency of natural vibrations and causes resonance. The results of the study can be applied in the design and fine-tuning of engines in order to calculate and reduce torsional vibrations.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>двигатель внутреннего сгорания</kwd><kwd>крутящий момент</kwd><kwd>крутильные колебания</kwd><kwd>гармоника</kwd><kwd>частота и амплитуда</kwd><kwd>резонанс</kwd></kwd-group><kwd-group xml:lang="en"><kwd>internal combustion engine</kwd><kwd>torque</kwd><kwd>torsional vibrations</kwd><kwd>harmonic</kwd><kwd>frequency and amplitude</kwd><kwd>resonance</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Попык К. Г. Динамика автомобильных и тракторных двигателей. 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