Deposition effect of carbon deposits on charge flow in EGR valve equipped CI engine

• Autorzy: Woźniak Marek , Siczek Krzysztof , Zakrzewski Sergiusz , Just Paweł , Ozuna Gustavo , Onescu Constantin

Identyfikatory

DOI

10.19206/CE-150503

• Języki publikacji: EN

Abstrakty

EN

The exhaust gas recirculation (EGR) valve regulates the exhaust gas flow between the engine exhaust manifold and the inlet one. This allows the inlet air to warm up, improving fuel evaporation and reducing the combustion temperature of the charge. Such a valve reduces the number of harmful substances in the exhaust gases. The valve tends to stick when too much sediment builds on the walls of the exhaust system, especially during driving in urban conditions or when leaks in the vacuum or exhaust pipes occur. A faulty valve causes the engine to run unevenly at idle speed and under light loads. The defective EGR valve weakens the inlet manifold capacity, increases combustion, causes clogging of the particulate filter and damage to the lambda probe. Blocked EGR valve may lead to engine immobilization as a result of its computerized control system operations. A model of an EGR valve for a selected diesel engine was developed to determine velocity distribution of the load flowing in it for different values of the degree of valve opening and the volume of deposits on the valve walls. The volume of accumulated carbon deposits on the walls of the EGR valve was measured using a real engine. Based on the recorded mileage of the vehicle, the assumed average speed of the car and the driving style of the driver and the intensity of deposition of carbon particles on the walls was estimated.

Słowa kluczowe

EN

CI engine; EGR valve; carbon deposits; CFD analysis

PL

silnik ZS; zawór EGR; depozyty węglowe; analiza CFD

• Wydawca: Polskie Towarzystwo Naukowe Silników Spalinowych
• Czasopismo: Combustion Engines
• Rocznik: 2023
• Tom: R. 62, nr 1
• Strony: 26--35
• Opis fizyczny: Bibliogr. 68 poz., il. kolor., rys., wykr.

Twórcy

autor

Woźniak Marek

• Department of Vehicles and Fundamentals of Machine Design, Lodz University of Technology, Poland

• https://orcid.org/0000-0001-9204-4024

autor

Siczek Krzysztof

• Department of Vehicles and Fundamentals of Machine Design, Lodz University of Technology, Poland

• https://orcid.org/0000-0003-2216-3452

autor

Zakrzewski Sergiusz

• Department of Vehicles and Fundamentals of Machine Design, Lodz University of Technology, Poland

autor

Just Paweł

• Department of Materials Engineering and Production Systems, Lodz University of Technology, Poland

• https://orcid.org/0000-0002-5305-8607

autor

Ozuna Gustavo

• Department of Industrial Engineering and Systems, University of Sonora, Mexico

• https://orcid.org/0000-0002-4430-2794

autor

Onescu Constantin

• Maintenance Department, University of Pitesti, Romania

• https://orcid.org/0000-0003-3255-9485

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).