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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">nami</journal-id><journal-title-group><journal-title xml:lang="ru">Труды НАМИ</journal-title><trans-title-group xml:lang="en"><trans-title>Trudy NAMI</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0135-3152</issn><publisher><publisher-name>ФГУП «НАМИ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.51187/0135-3152-2020-4-94-100</article-id><article-id custom-type="elpub" pub-id-type="custom">nami-168</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>ДВИГАТЕЛЕСТРОЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ENGINE DEVELOPMENT</subject></subj-group></article-categories><title-group><article-title>Повышение энергетической эффективности газового двигателя 6ЧН13/15 применением термодинамического цикла Миллера</article-title><trans-title-group xml:lang="en"><trans-title>Increasing the energy efficiency of the 6ChN13/15 duel-fuel engine using the Miller thermodynamic cycle</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>Козлов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozlov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Козлов Андрей Викторович - доктор технических наук, начальник управления.</p></bio><bio xml:lang="en"><p>D.Sc. (Eng), head of department.</p><p>Moscow 125438</p></bio><email xlink:type="simple">a.kozlov@nami.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Милов</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Milov</surname><given-names>K. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Милов Константин Владимирович - аспирант, инженер.</p></bio><bio xml:lang="en"><p>Milov K.V., postgraduate, Engineer.</p></bio><email xlink:type="simple">konstantin.milov@nami.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Управление Энергосберегающие технологии и альтернативные топлива, Центр Энергоустановки, ГНЦ РФ ФГУП НАМИ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Department Energy-saving technologies and alternative fuel, Center Power units, Federal State Unitary Enterprise Central Scientific Research Automobile and Automotive Engines Institute (FSUE “NAMI”)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>24</day><month>12</month><year>2020</year></pub-date><volume>0</volume><issue>4</issue><fpage>94</fpage><lpage>100</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Козлов А.В., Милов К.В., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Козлов А.В., Милов К.В.</copyright-holder><copyright-holder xml:lang="en">Kozlov A.V., Milov K.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" 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://nami.elpub.ru/jour/article/view/168">https://nami.elpub.ru/jour/article/view/168</self-uri><abstract><sec><title>Введение</title><p>Введение. В настоящее время особенно актуален вопрос топливной экономичности, нормирования выбросов вредных веществ и поиска альтернативных топлив. Выбор природного газа как альтернативы традиционным топливам при конвертировании двигателя накладывает свои ограничения, избежать которые возможно, применив цикл Миллера.</p><p>Цель исследования - определить потенциал повышения энергоэффективности газового двигателя, конвертированного из дизеля 6ЧН13/15 и работающего по циклу Миллера с ранним закрытием впускного клапана в сравнении с двигателем, работающим по циклу Отто.</p></sec><sec><title>Методология и методы</title><p>Методология и методы. Исследования проводились методом натурного эксперимента.</p><p>Результаты и научная новизна. Проведён сравнительный анализ результатов экспериментальных исследований различных термодинамических циклов двигателей, работающих на природном газе. Полученные результаты будут использоваться при создании газового двигателя и дальнейшей его оптимизации путём управления рабочим процессом и системой подачи воздуха.</p></sec><sec><title>Практическая значимость</title><p>Практическая значимость. Предложены результаты сравнения показателей двигателей, работающих по термодинамическим циклам Миллера с ранним закрытием впускного клапана и Отто. Полученные результаты могут быть интересны автопроизводителям грузовых автомобилей и специалистам в области двигателестроения.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Annotation</title><p>Annotation. Introduction. Currently, the issue of fuel efficiency, emissions regulation of harmful substances and the search for alternative fuels is especially relevant. The choice of natural gas for an engine as an alternative to traditional fuels imposes its limitations, which can be avoided by applying the Miller cycle.</p><p>The purpose of the study was to determine and compare the potential for improving 6ChN13/15 diesel engine converted for an energy efficient duel-fuel engine operating according to the Miller cycle with early closing of the intake valve and the engine potential of Otto thermodynamic cycle.</p><p>Methodology and research methods. The research was carried out by a natural experiment method.</p><p>Scientific novelty and results. A comparative analysis of various experimental results studies of engines thermodynamic cycles running on natural gas has been carried out. The results obtained will be used to create and further optimize a duel-fuel engine by controlling its workflow and the air supply system.</p></sec><sec><title>Practical significance</title><p>Practical significance. The indicators results of Otto engines and engines operating according to Miller's thermodynamic cycles with early closing of the intake valve have been compared. The results obtained may be of interest to truck manufacturers and engine specialists.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>двигатель внутреннего сгорания</kwd><kwd>природный газ</kwd><kwd>термодинамический цикл Отто</kwd><kwd>термодинамический цикл Миллера</kwd><kwd>стендовые испытания</kwd></kwd-group><kwd-group xml:lang="en"><kwd>internal combustion engine</kwd><kwd>natural gas</kwd><kwd>Otto's thermodynamic cycle</kwd><kwd>Miller's thermodynamic cycle</kwd><kwd>bench tests</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">Александров А.А., Марков В.А. 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