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Proposal of Engine Intake System with Exhaust Gases Recirculation
Vojkůvka, František ; Štěpánek, Karel (referee) ; Dundálek, Radim (advisor)
The object of the diploma thesis is to optimize vacuum function of the ejector using computional fluid dynamics, or CFD. The ejector is inserted to the intake system of the six - cylinder diesel engine to increase the pressure gradient of the exhaust gas recirculation system. The analysis of the current design solution is performed and then the ejector with the new shape affording higher vacuum effect is proposed. The introductory part is devoted to the questions of diesel engines emissions and technology to reduce emissions in the exhaust system focused on the EGR.
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Study of the Gas Blow-by through the Turbocharger Sealing System
Požár, Vladimír ; Novotný, Pavel (referee) ; Vacula, Jiří (advisor)
The work focuses on the investigation of gas flow within the sealing system of a turbocharger, specifically in the compressor section. The sealing „piston” ring located here is the main subject of the study, primarily examining the influence of the ring's geometry and its positioning in the shaft groove on gas leakage into the bearing housing. Furthermore, the behavior of this flow under various boundary conditions is assessed by testing different flow types.
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Proposal of Engine Intake System with Exhaust Gases Recirculation
Vojkůvka, František ; Štěpánek, Karel (referee) ; Dundálek, Radim (advisor)
The object of the diploma thesis is to optimize vacuum function of the ejector using computional fluid dynamics, or CFD. The ejector is inserted to the intake system of the six - cylinder diesel engine to increase the pressure gradient of the exhaust gas recirculation system. The analysis of the current design solution is performed and then the ejector with the new shape affording higher vacuum effect is proposed. The introductory part is devoted to the questions of diesel engines emissions and technology to reduce emissions in the exhaust system focused on the EGR.
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