Abstract
The effect of piston tooling marks on pressure generation and oil transport at the piston skirt-cylinder bore interface, in internal combustion engines, is investigated using direct numerical simulation. At small clearances (h/Ω ˜ 1), the resulting pressure variations are large, and significant small-scale cavitation occurs. Comparison with results obtained using Patir & Cheng’s flow factor model highlight differences around the peak pressure and small-scale cavitation regions.
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