The oil influence between the piston and the bore is analyzed, by writing difference equations of the Reynolds Equation within the lubricant film, and a difference approach for solving this equation is provided for the symmetric boundary condition.

• 本文还分析了活塞与缸套之间润滑油膜的雷诺方程,给出了在对称边界条件下求解此方程的差分格式。