Diesel combustion in high load situations: a visual analysis of mixture formation and air utilization

• Autorzy: Grüneberger P. , Jocham B. , Winklhofer E.

Identyfikatory

DOI

10.19206/CE-2017-201

• Języki publikacji: EN

Abstrakty

EN

As fuel injection pressures keep rising, questions focus on additional benefits to be gained from the considerable efforts to achieve and handle the fuel pressure increments. The aim of fuel injection processes is to support the mixing of fuel molecules with oxygen. The steps towards this goal include fuel atomization, evaporation, heat transfer from air into the liquid or vaporized fuel together with transport of fuel for best air utilization. Engineering degrees of freedom include the parameters of the fuel injection system and handling of in-cylinder gas conditions. The paper describes basic high pressure flow processes, spray propagation, evaporation and combustion and the mixing of flame clouds with in-cylinder air for oxidation of high temperature soot particles. Experimental evidence of such processes is derived from laboratory flow tests as well as from optically accessed engines operated under conditions relevant for todays passenger car and heavy duty engines.

Słowa kluczowe

EN

diesel engine; combustion; visual analysis

PL

silnik spalinowy; spalanie; analiza wizualna

• Wydawca: Polskie Towarzystwo Naukowe Silników Spalinowych
• Czasopismo: Combustion Engines
• Rocznik: 2017
• Tom: R. 56, nr 2
• Strony: 3--6
• Opis fizyczny: Bibliogr. 3 poz., il.

Twórcy

autor

Grüneberger P.

• AVL List GmbH, Graz, Austria

autor

Jocham B.

• AVL List GmbH, Graz, Austria

autor

Winklhofer E.

• AVL List GmbH, Graz, Austria

Bibliografia

• [1] DEMBINSKI, H., ANGSTROM, H.-E., WINKLHOFER, E. Injection pressure as a means to guide air utilization in Diesel engine combustion. Fuel systems for IC engines. Institution of Mechanical Engineers. 2014.
• [2] WINKLHOFER, E., KELZ, E., MOROZOV, A. Basic flow processes in high pressure fuel injection equipment. ICLASS. 2003, Italy.
• [3] DEMBINSKI, H. In-cylinder flow characterization of heavy duty diesel engines using combustion image velocimetry. Doctoral thesis, Royal Institute of Technology. Stockholm, 2013.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).