Improving the effective efficiency of a spark ignition engine through the use of a fully independent valve control system

• Autorzy: Żmudka Zbigniew , Postrzednik Stefan

Identyfikatory

DOI

10.19206/CE-141541

• Języki publikacji: EN

Abstrakty

EN

The article presents theoretical research of the proposed system of fully independent valve control (FIVC) of the SI engine. The analysis included controlling the movement of the intake valves, which results in adjusting the mass of the fresh charge to the current engine load, as well as the movement of the exhaust valves, where the main aim is to keep the rest of the exhaust gas in the cylinder, i.e. implementation of internal EGR. The open theoretical Seiliger-Sabathe cycle with the classic throttle regulation of load is the reference cycle for assessment of benefits and study of the effectiveness of obtaining work as a result of application of the FIVC system. A comparative analysis of the effectiveness of application of the proposed system was carried out based on the selected quantities: fuel dose, cycle work, relative work of charge exchange and cycle efficiency. The use of the FIVC to regulate the SI engine load makes it possible to eliminate the throttle and thus reduce the charge exchange work, especially in the partial load range. And this then leads to an increase in internal and effective work, which in turn results in an increase in the effective energy efficiency of an engine operation.

Słowa kluczowe

EN

SI engine; theoretical cycle; charge exchange; engine efficiency; independent valve control

PL

silnik ZI; cykl teoretyczny; wymiana ładunku; sprawność silnika; niezależne sterowanie zaworami

• Wydawca: Polskie Towarzystwo Naukowe Silników Spalinowych
• Czasopismo: Combustion Engines
• Rocznik: 2021
• Tom: R. 60, nr 4
• Strony: 30--35
• Opis fizyczny: Bibliogr. 21 poz., wykr.

Twórcy

autor

Żmudka Zbigniew

• Faculty of Energy and Environmental Engineering, Silesian University of Technology

• https://orcid.org/0000-0001-7253-5942

autor

Postrzednik Stefan

• Faculty of Energy and Environmental Engineering, Silesian University of Technology

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).