namiТруды НАМИTrudy NAMI0135-3152ФГУП «НАМИ»10.51187/0135-3152-2024-1-31-44nami-310Research ArticleДВИГАТЕЛЕСТРОЕНИЕENGINE DEVELOPMENTТеоретическое обоснование рабочего цикла сажевого фильтра с активной регенерациейActive regeneration particulate filter operating cycle theoretical justificationМаксимовИ. М.MaksimovI. M.

Максимов Иван Михайлович – инженер, Передовая инженерная школа «Кибер Авто Тех»

г. Набережные Челны 423810

Maksimov I.M. – engineer, Advanced engineering school “Cyber Auto Tech”

Naberezhnye Chelny 423810

chorri.pro@gmail.comМавринГ. В.MavrinG. V.

Маврин Геннадий Витальевич – канд. хим. наук, доцент, директор Инжинирингового центра

г. Набережные Челны 423810

Mavrin G.V. – PhD (Chem), associate professor, director of Engineering Center

Naberezhnye Chelny 423810

ГордеевА. В.GordeevA. V.

Гордеев Александр Владимирович – главный специалист по рабочим процессам двигателя

г. Набережные Челны 423827

Gordeev A.V. – chief engine operations specialist

Naberezhnye Chelny 423827

ПогодинА. Ю.PogodinA. Yu.

Погодин Александр Юрьевич – главный специалист по системам выпуска и нейтрализации отработавших газов

г. Набережные Челны 423827

Pogodin A.Yu. – chief specialist in exhaust gas aftertreatment systems

Naberezhnye Chelny 423827

Набережночелнинский институт КФУРоссияNaberezhnye Chelny Institute of KFURussian FederationНаучно-технический центр ПАО «КАМАЗ»РоссияResearch and Developmet Center of KAMAZ PJSCRussian Federation202428032024013144Copyright © Максимов И.М., Маврин Г.В., Гордеев А.В., Погодин А.Ю., 20242024Максимов И.М., Маврин Г.В., Гордеев А.В., Погодин А.Ю.Maksimov I.M., Mavrin G.V., Gordeev A.V., Pogodin A.Y.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nami.elpub.ru/jour/article/view/310

Введение (постановка задачи и актуальность). Сажевые фильтры, применяемые в дизельных автомобилях для улавливания взвешенных частиц, требуют постоянной и/или периодической регенерации для сохранения работоспособности. Порядок загрузки дизельного сажевого фильтра и его регенерации можно представить в виде алгоритма. Особенности функционирования сажевого фильтра как в обычных условиях, так и при активной регенерации исследовались в ряде научных работ, и полученные в них результаты можно принимать во внимание при разработке алгоритма.Цель работы – разработка алгоритма рабочего цикла сажевого фильтра дизельного автомобиля, включающего в себя режимы загрузки фильтра, активную регенерацию и поиск неисправностей.Методология и методы. В данной работе проводился сбор информации из научной литературы по особенностям работы системы очистки отработавших газов дизельных автомобилей, в частности по сажевым фильтрам. В исследовании предполагался некаталитический дизельный сажевый фильтр, находившийся в системе вместе с дизельным окислительным катализатором, восстановительным катализатором оксидов азота и катализатором окисления аммиака. В качестве средств измерения показателей системы использовались сенсоры твёрдых частиц, датчики температуры, давления, расхода отработавших газов и топлива для сжигания накопленной в фильтре сажи.Результаты. Созданный алгоритм рабочего цикла сажевого фильтра включал в себя режим загрузки с определением параметров для переключения на активную регенерацию, установлением момента перехода между стадиями глубокой фильтрации и фильтрации в сажевом слое. Активная регенерация состояла из последовательности двух управляемых впрысков топлива для сгорания сажи в фильтре и возникновения температурного импульса между впрысками с выбором наиболее подходящего уровня расхода отработавшего газа, а также контролем над температурой фильтра и содержанием кислорода. Проблемы с неисправностями системы очистки решались при помощи контроля над подачей топлива при регенерации.Научная новизна. В разработке алгоритма учитывались особенности протекания процессов в сажевом фильтре при активной регенерации, в том числе обеспечение высокой эффективности удаления сажи из фильтра.Практическая значимость. Алгоритм может быть использован для разработки методики проведения стендовых и ездовых испытаний дизельных автомобилей, а также применён на дизельном двигателе при эксплуатации транспортных средств

Introduction (problem statement and relevance). Particulate filters or traps used in diesel vehicles to catch suspended particles require continuous and/or periodic regeneration in order to maintain operability. The order of diesel particulate filter loading and its regeneration can be presented in the form of an algorithm. Specific features of particulate filter functioning both in regular conditions and during active regeneration have been studied in a number of scientific papers, and the results obtained in them can be considered when developing the algorithm.The purpose of the work is development of the algorithm of the operating cycle of the diesel vehicle particulate filter including modes of filter loading, active regeneration and troubleshooting.Methodology and methods. Information from scientific literature regarding specific features of diesel vehicle exhaust gas aftertreatment systems operation, namely regarding particulate filters, has been collected under this study. The study assumes a noncatalytic diesel particulate filter that is contained in the system together with a diesel oxidation catalyst, nitrogen oxide reduction catalyst and ammonia oxidation catalyst. Particulate matter sensors, temperature sensors, pressure sensors, exhaust-gas flow sensors and flow sensors for fuel to burn the soot accumulated in the filter have been used as measuring instrumentation of system indicators.Results. The created algorithm of the particulate filter operating cycle included the loading mode with definition of parameters for switching to active regeneration, definition of the transition moment between the stages of deep filtration and filtration in the soot layer. Active regeneration consisted of a sequence of two controlled fuel injections for combustion of soot in the filter and occurrence of the temperature impulse between the injections with selection of the most suitable level of exhaust gas flow rate as well as the control over the filter temperature and content of oxygen. The problems of malfunctions of the treatment system were solved by controlling the fuel supply during regeneration.Scientific novelty. The peculiarities of processes in the particulate filter during active regeneration were considered in the algorithm development, including ensuring high efficiency of soot removal from the filter.Practical significance. The algorithm can be used to develop a procedure to perform bench and driving tests of diesel vehicles as well as it can be applied in a diesel engine during vehicles operation

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The authors declare that there are no conflicts of interest present.