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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 custom-type="edn" pub-id-type="custom">QTYOYK</article-id><article-id custom-type="elpub" pub-id-type="custom">nami-384</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>АВТОМОБИЛЕСТРОЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>AUTOMOBILE DEVELOPMENT</subject></subj-group></article-categories><title-group><article-title>Применение двухпоточных передач, включающих вариатор, в трансмиссиях автомобилей, в том числе с комбинированной энергоустановкой и электромобилях</article-title><trans-title-group xml:lang="en"><trans-title>Application of two-loop transmissions with variator in vehicle transmissions including ones with hybrid powertrain and electric vehicles</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>Щербаев</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shherbaev</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Щербаев Павел Андреевич – аспирант; инженер-конструктор 2-й категории</p><p>г. Москва 107023</p><p>г. Москва 125438</p></bio><bio xml:lang="en"><p>Shherbaev P.A. – postgraduate; design engineer</p><p>Moscow 107023</p><p>Moscow 125438</p></bio><email xlink:type="simple">lllep6atblu@gmail.com</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>Дадашев</surname><given-names>М. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Dadashev</surname><given-names>M. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дадашев Мурад Дмитриевич – аспирант; инженер-конструктор 2-й категории</p><p>г. Москва 107023</p><p>г. Москва 125438</p></bio><bio xml:lang="en"><p>Dadashev M.D. – postgraduate</p><p>Moscow 107023</p><p>Moscow 125438</p></bio><email xlink:type="simple">myrad1998@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГАОУ ВО «Московский политехнический университет»; ГНЦ РФ ФГУП «НАМИ»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow Polytechnic University; 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>2025</year></pub-date><pub-date pub-type="epub"><day>09</day><month>07</month><year>2025</year></pub-date><volume>0</volume><issue>2</issue><fpage>67</fpage><lpage>81</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Щербаев П.А., Дадашев М.Д., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Щербаев П.А., Дадашев М.Д.</copyright-holder><copyright-holder xml:lang="en">Shherbaev P.A., Dadashev M.D.</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/384">https://nami.elpub.ru/jour/article/view/384</self-uri><abstract><p>Введение (постановка задачи и актуальность). Актуальной задачей в современном автомобилестроении остаётся повышение эффективности трансмиссии и транспортного средства в целом. Одним из способов решения этих задач может выступить применение в трансмиссиях автомобилей и электромобилей двухпоточных передач (ДП) с вариатором. ДП с вариатором обладают рядом характерных кинематических свойств, потенциально применимых и частично реализованных на серийных агрегатах. Применение таких передач, наряду с использованием в приводе транспортных средств с двигателем внутреннего сгорания, может быть полезно в трансмиссиях автомобилей с комбинированной энергетической установкой, к конструкции которых применяются требования по реализации согласования потоков мощности от источников энергии.Цель исследования – анализ кинематических схем двухпоточных трансмиссий, применяемых или потенциально применимых в конструкциях современных автомобилей. Полученные данные о кинематических и силовых характеристиках позволят проводить сравнительную оценку описываемых конструкций, получать основные взаимосвязи целевых параметров с конструктивными особенностями проектируемых передач.Методология и методы исследования. Разработан программный продукт, позволяющий получать широкий спектр характеристик передач на основе вводимых конструктивных параметров, габаритных размеров, нагрузок, а также определять характеристики вариатора, применяемого в ДП. Графики зависимостей, приведённые в статье, построены на основании данных, опубликованных разработчиками агрегатов, для чего в математической модели проведён расчёт основных характеристик, представленных в виде безразмерных графиков и предназначенных для визуального сравнения и выявления основных взаимосвязей моделируемых величин.Результаты и научная новизна. На основе полученных зависимостей для ДП сформулированы основные взаимосвязи, позволяющие в первом приближении провести сравнительный анализ, проследить факторы, вызывающие различные полезные и негативные эффекты. Полученные результаты могут быть использованы для первичной оценки применимости агрегатов с аналогичными кинематическими схемами, а также иллюстрации принципов их работы. Приведён сравнительный анализ описываемых конструкций по ряду конструктивных, кинематических и силовых параметров.Практическая значимость. Исследования в области проектирования ДП с вариатором могут послужить основой для разработки алгоритмов и программных средств автоматизированного проектирования и расчёта таких передач, что значительно сократит затраты на разработку и позволит выявить многофакторные зависимости в части обеспечения эффективности современных автомобилей. Полученные данные о характеристиках ряда принципиальных схем ДП с вариатором позволяют оценить эффект их применения по сравнению с полнопоточными передачами в области обеспечения требуемого диапазона, КПД, кинематических возможностей и обеспечения характерных режимов работы трансмиссии по сравнению с полнопоточными передачами.</p></abstract><trans-abstract xml:lang="en"><p>Introduction (problem statement and relevance). Increasing the efficiency of transmission and vehicle on the whole remains the relevant objective in the modern automotive industry. One of the ways to solve these tasks can be application of two-loop transmissions with variator in vehicle and electric vehicle transmissions. The two-loop transmissions with variator have a number of characteristic kinematic properties, which are potentially applicable and partially implemented on series units. Application of such transmissions, along with using them within internal combustion engine vehicle propulsion, can be useful in hybrid powertrain vehicle transmissions, which design is subject to the requirements on implementation of matching power paths or flows from the energy sources.The purpose of the study is analyzing the kinematic or gearing diagrams of the two-loop transmissions, which are used or potentially applicable in the modern vehicle designs. The obtained data on kinematic and load-bearing characteristics will allow comparative assessment of the described designs and obtaining main interrelations of the target parameters with the design features of the transmissions being designed.Methodology and research methods. A software product is developed that allows obtaining a wide range of transmission characteristics based on the input design parameters, overall dimensions, loads, as well as determining characteristics of the variator used in the two-loop transmissions. The diagrams of dependences given in the paper are graphed on the basis of the data published by the developers of the units, for which the math model contains performed calculation of the main characteristics presented in the form of dimensionless diagrams and intended for visual comparing and determining the main interrelations of the values being simulated.Scientific novelty and results. Based on the dependencies obtained for two-loop transmissions, the basic interrelations have been formulated allowing to a first approximation to conduct the comparative analysis and monitor the factors causing different useful and negative effects. The results obtained can be used for initial assessment of applicability of the units with similar kinematic diagrams, as well as for illustration of their operation principles. A comparative analysis of the described designs has been conducted in terms of a number of design, kinematic, and load-bearing parameters.Practical significance. Studies in the field of design of two-loop transmissions with variator can serve as a basis for development of algorithms and software for automated design and calculation of such transmissions, which will significantly reduce the development costs and allow determination of multifactor dependences to ensure efficiency of modern vehicles. The obtained data on characteristics of a number of principal diagrams of two-loop transmissions with variator allow evaluation of effect of their application compared to single-loop transmissions in terms of ensuring the required range, efficiency, kinematic capabilities, and ensuring typical operating modes of transmissions compared to the singleloop transmissions.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>двухпоточная передача</kwd><kwd>вариатор</kwd><kwd>комбинированная энергоустановка (КЭУ)</kwd><kwd>трансмиссии электромобилей</kwd><kwd>Bosch DH-CVT</kwd><kwd>Daihatsu D-CVT</kwd><kwd>кинематические схемы</kwd><kwd>план скоростей</kwd></kwd-group><kwd-group xml:lang="en"><kwd>two-loop transmission</kwd><kwd>variator</kwd><kwd>hybrid powertrain</kwd><kwd>electric vehicle transmissions</kwd><kwd>Bosch DH-CVT</kwd><kwd>Daihatsu D-CVT</kwd><kwd>gearing diagrams</kwd><kwd>velocity diagram</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">Van Spijk G.J. 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