Preliminary communication

Numerical analysis of the engine with spark ignition and compression ignition

Grzegorz Budzik ; Rzeszow University of Technology, Powstancow Warszawy Avenue 12, 35-959 Rzeszow, Poland
Mariusz Cygnar ; State Higher Vocational School in Nowy Sacz, Technical Institute, ul. Zamenhofa 1a, 33-300 Nowy Sacz, Poland
Mirosław Grzelka ; Poznan University of Technology, Piotrowo 3, 60 - 965 Poznan, Poland
Lidia Marciniak-Podsadna ; Poznan University of Technology, Piotrowo 3, 60 - 965 Poznan, Poland
Bronisław Sendyka ; Cracow University of Technology, Jana Pawła II 37 Avenue, 31-864 Cracow, Poland
Antun Stoic ; J. J. Strossmayer University of Osijek, Mechanical Engineering Faculty in Slavonski Brod, Trg Ivane Brlić Mažuranić 2, 35000 Slavonski Brod, Croatia

Abstract

The article presents simulation researches on the combustion process in the four-cylinder testing engine, based on the spark ignition engine Toyota Yaris 1,3 dm3 which was equipped with two systems of power supply i.e.: fundamental and ignition. Two methods of initiating the combustion process were applied: by spark ignition and, after it was turned off, by means of the ignition dose injection. The researches aimed at revealing the differences in the combustion process and engine performance, above all the changes in pressure that occurred in the cylinder for that kind of two-fuel power supply of the engine. The ignition dose injected into the cylinder was equal to about 5 ÷ 8 % of the general mass of the fuel supplied to the engine. The mass of the fuel injected into the approach collector determined the remaining part, and the direct injection of the fuel took place over several dozen of rotation degrees of the crankshaft before TDC (Top Dead Centre). A spatial grid of the engine’s model (pre-processor) was prepared, and also a modification to the source KIVA 3V program was made consisting in taking into account of two systems of injection. It is necessary to mention that the standard KIVA 3V program contains, as a default, only one source of fuel injection.

Keywords

two fuel injection systems; spark-ignition and compression-ignition engine

Hrčak ID:

120396

URI

https://hrcak.srce.hr/120396

Publication date:

26.4.2014.

Article data in other languages: croatian

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