Evaluation of Cycle Variation of SWACER-like Knocking Using 3D SI Combustion Simulation 2019-01-2208
Cyclic variation on heavy knocking was reproduced using 3D SI combustion simulation with RANS / LES turbulence models and detailed kinetic mechanisms. A 0.66 liter, inline 3 cylinder gasoline engine operated at 1200 rpm, WOT was mainly investigated. It was revealed that the combination of RANS, Liu mech. and calculation over multiple cycles worked well. Detailed process of heavy-knock was also suggested and it was thought that SWACER-like mechanism had concerned. RANS could describe typical behavior of heavy-knock within the first 3 cycle calculation and it showed good agreement with both the actual engine measurement and LES calculation result.
Citation: Kuroki, T., Shima, Y., Ono, Y., and Serizawa, T., "Evaluation of Cycle Variation of SWACER-like Knocking Using 3D SI Combustion Simulation," SAE Technical Paper 2019-01-2208, 2019. Download Citation
Tomonori Kuroki, Yuta Shima, Yasuhisa Ono, Takeshi Serizawa
Daihatsu Motor Co., Ltd.
2019 JSAE/SAE Powertrains, Fuels and Lubricants