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Thermal regulation of the diesel combustion chamber with multilayer semitransparent thermal barrier material

Наименование публикации:Thermal regulation of the diesel combustion chamber with multilayer semitransparent thermal barrier materialАвторы:Веселов В. И. 
Vladimir Merzlikin, Stanislav Cheranev, Victor Prediger, Lionel Gury
Тематическая область:Металлургия
Вид публикации:Статья в сборнике
Электронная публикация:ДаЯзык издания:АнглийскийГод издания:2013Страна издания: Сербия Наименование журнала или сборника:Proceedings of 24th JUMV International Automotive Conference, Belgrade, 23-24 April 2013Номер журнала (с указанием года):CD-disk. Paper 5Е03. – P. 73 – 83. Количество страниц:11Количество печатных листов:0,8Библиографическая ссылка:. Vladimir Merzlikin, Vladimir Veselov, Stanislav Cheranev, Victor Prediger, Lionel Gury. Thermal regulation of the diesel combustion chamber with multilayer semitransparent thermal barrier material: NMV2013. Proceedings of 24th JUMV International Automotive Conference, Belgrade, 23-24 April 2013, 2913, CD-disk. Paper 5Е03. – P. 73 – 83. Аннотация (реферат):

​​​​​​​Influence of optical and thermal radiative characteristics of the thermal barrier material with the surface semitransparent heat-insulating coating (SHIC) on the thermal regulation of walls of the diesel combustion chamber is analyzed. The methodology of physical-mathematical simulation of parameters of the conductive-radiative heat transmission and formation of transitional (stationary) temperature fields inside SHIC covering oxidized substrate   is used which was developed by the authors. The radiative fields in the model semitransparent multilayer thermal barrier material are discussed. The core of this paper is diesel efficiency increase and exhaust emission reduction due to application of microstructure ceramic SHIC based on partially yttria stabilized zirconia. The paper presents a physical and mathematical simulation of improved optical (transmittance, reflectance, absorption coefficients or absorption, scattering indices in near IR) and thermo radiative (emittance coefficients in middle IR) characteristics determined by optimal temporal temperature profiles inside SHIC. It is considered the effect of the subsurface volumetric heating up for SHIC on reflecting bond coating as oxidized layer of metal wall. Temperature maximum position promoting necessary changing of a surface overheating is analyzed. It has been shown decreasing the surface temperature of SHIC (causing  NOx emission reduction) in comparison with high temperature of traditional opaque heat-insulating coatings. It is discussed the experimental test of heat-insulated piston by SHIC in comparison with unprotected one for typical high speed diesel tractor engine. . It has been received improved power characteristics and the burning capacity about  ~ 5 - 10 %.​


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