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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">10.51187/0135-3152-2022-2-14-20</article-id><article-id custom-type="elpub" pub-id-type="custom">nami-229</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>Термогравиметрическое исследование состава картерных газов</article-title><trans-title-group xml:lang="en"><trans-title>Thermo-gravimetric study of the crankcase gases composition</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>Зленко</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zlenko</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зленко Михаил Александрович - доктор технических наук, главный научный сотрудник.</p><p>Москва 125438.</p></bio><bio xml:lang="en"><p>D.Sc. (Eng), chief researcher, engine department.</p><p>Moscow 125438.</p></bio><email xlink:type="simple">mikhail.zlenko@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>Теренченко</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Terenchenko</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Теренченко Алексей Станиславович - кандидат технических наук, доцент, директор Центра «Энергоустановки».</p><p>Москва 125438.</p></bio><bio xml:lang="en"><p>PhD (Eng), associated professor, head of “Power Units” Centre.</p><p>Moscow 125438.</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тимофеев</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Timofeev</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тимофеев Дмитрий Сергеевич - инженер-конструктор Центра «Энергоустановки».</p><p>Москва 125438.</p></bio><bio xml:lang="en"><p>Engineer, engine department, “Power Units” Centre.</p><p>Moscow 125438.</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ГНЦ РФ ФГУП «НАМИ»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Central Scientific Research Automobile and Automotive Engines Institute</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>04</day><month>07</month><year>2022</year></pub-date><volume>0</volume><issue>2</issue><fpage>14</fpage><lpage>20</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Зленко М.А., Теренченко А.С., Тимофеев Д.С., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Зленко М.А., Теренченко А.С., Тимофеев Д.С.</copyright-holder><copyright-holder xml:lang="en">Zlenko M.A., Terenchenko A.S., Timofeev D.S.</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/229">https://nami.elpub.ru/jour/article/view/229</self-uri><abstract><p>Введение (постановка задачи и актуальность). В статье приведены результаты экспериментов по изучению конденсата картерных газов (КГ). Конденсат был получен при испытаниях двигателя по специальному ездовому циклу. После выдержки в покое в течение 24 ч конденсат расслоился на три части: нижняя «A» примерно 12%vol - вода; средняя «B» около 6%vol - водомасляная эмульсия; верхняя «C» около 82%vol - смесь сконденсированных паров углеводородов и твёрдых частиц.</p><p>Цель исследований - в определении весового соотношения топливных и масляных компонентов в КГ.</p><sec><title>Методология и методы</title><p>Методология и методы. В работе использован термогравиметрический метод исследования (TGA -Thermogravimetric analysis), суть которого заключается в определении изменения массы исследуемой пробы в зависимости от температуры и времени. Выпаривание конденсата проводилось при T = 200°С, при этой температуре все топливные фракции, включая хвостовые, полностью испаряются, но масло, если оно присутствует в конденсате, испаряется в крайне незначительном количестве.</p><p>Результаты и научная новизна. Результаты разгонки (выпаривания) верхней части «С» показали, что при удачно спроектированной и исправно работающей системе вентиляции картера (СВК) в составе КГ содержатся преимущественно тяжёлые фракции топлива. В исследованной части «С» на топливные фракции приходится 96,3%wt, остальное 3,7%wt составляет густой пастообразный осадок чёрного цвета со специфическим запахом ароматических углеводородов. TGA для исследования состава КГ применён впервые, в работе представлены данные о его высокой точности.</p></sec><sec><title>Практическая значимость</title><p>Практическая значимость. На базе TGA разработана методика валидационных испытаний СВК. Отсутствие или малое содержание масла в составе остатка является критерием положительной оценки функциональности СВК. TGA позволяет также провести количественную оценку влияния СВК на расход масла. Выделенный в ходе исследований остаток - строительный материал для образования так называемой «сажевой шубы» на тарелке и стержне впускных клапанов со стороны впускного канала.</p></sec></abstract><trans-abstract xml:lang="en"><p>Introduction (problem statement and relevance). The paper presents the experimental results of crankcase gas (CG) condensate. The condensate was obtained during engine testing due to a special driving cycle. After holding at rest for 24 hours, the condensate separated into three parts: lower “A”, approximately 12%vol - water; medium “B”, about 6%vol - water-oil emulsion; upper “C”, about 82%vol - the mixture of condensed hydrocarbon vapors and solid particles.</p><p>The purpose of the research was to determine the weight ratio of fuel and oil components in the CG.</p><p>Methodology and research methods. In this work, the thermo-gravimetric research method (TGA -Thermo-gravimetric analysis) was used, the purpose of which was to determine the change in the test sample mass depending on temperature and time. The condensate was evaporated at T = 200°C. At this temperature all fuel fractions, including the tail fractions, evaporated completely, but the oil, if it was present in the condensate, evaporated in an extremely small amount.</p><p>Scientific novelty and results. The results of the “C” upper part dispersal (evaporation) showed that with a well-designed and properly functioning crankcase ventilation system (CVS), the composition of the CG contained mainly heavy fuel fractions. In the studied part “C”, fuel fractions accounted for 96.3%wt, while the rest composed 3.7%wt, being a thick, pasty black precipitate with a specific smell of aromatic hydrocarbons. It was the first time when TGA was used to study the composition of CG, and highly accurate data was presented as a result.</p><p>Practical significance. On the basis of TGA, a methodology for validation tests of ICS has been developed. The absence or low content of oil in the composition of the remnants is a criterion for a positive functional assessment of the CVS. The TGA also allows to evaluate the CVS quantity effect on oil consumption. The residue isolated during the research is a building material for the formation of the so-called “soot coat” on the plate and the intake valve stem from the intake channel.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>картерные газы</kwd><kwd>система вентиляции картера</kwd><kwd>термогравиметрия</kwd><kwd>тяжёлые фракции топлива</kwd><kwd>скорость испарения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>crankcase gases</kwd><kwd>crankcase ventilation system</kwd><kwd>thermo-gravimetry</kwd><kwd>heavy fuel fractions</kwd><kwd>evaporation rate</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">Berthome V., Chalet D., Hetet J.-F. 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