TY - JOUR N2 - Results of a research study into the velocity field in combustion chamber of internal combustion engine are presented in the paper. Measurements of fresh charge flow velocity in the cylinder axis and near the cylinder squeezing surface were performed. The hot-wire anemometer was used. The measurement results were used for analysis of turbulence field in the examined combustion chamber. It turned out that in the axis of cylinder the maximum of velocity occurs 30 deg before TDC and achieves 6 m/s. In the studied combustion chamber, the maximum value of turbulence intensity was close to 0.2 and it was achieved 35 deg BTDC. Additionally, the maximal velocity dispersion in the following cycles of the researched engine was at the level of 2 m/s, which is 35% of the maximum value of flow velocity. At a point located near the squeezing surface of the piston, a similar level of turbulence, but a the smaller value of the average velocity was achieved. The turbulence field turned out to be inhomogeneous in the combustion chamber. L1 - http://journals.pan.pl/Content/84609/PDF/04-paper-Tutak.pdf L2 - http://journals.pan.pl/Content/84609 PY - 2011 IS - No 3 September EP - 214 DO - 10.2478/v10176-011-0016-4 KW - engine KW - measurement KW - flow field KW - turbulence A1 - Tutak, Wojciech A1 - Jamrozik, Arkadiusz PB - Polish Academy of Sciences Committee of Chemical and Process Engineering DA - 2011 T1 - Characteristics of the flow field in the combustion chamber of the internal combustion test engine SP - 203 UR - http://journals.pan.pl/dlibra/publication/edition/84609 T2 - Chemical and Process Engineering ER -