Patent ID: 9206764
Filing Date: 2015-12-08
Classification: F02F

Abstract:
1. An internal combustion engine, comprising: an engine body; a cylinder bore formed within the engine body and having at least one coolant passage located radially outward from the cylinder bore; a cylinder liner positioned within the cylinder bore and having an internal diameter (D), the cylinder liner including a top flange portion having, from an upper surface of the cylinder bore to an upper end of the at least one coolant passage, an axial thickness (A), the top flange sized to engage the cylinder bore in a press fit, the cylinder liner further including a wall portion extending axially from the top flange portion, the wall portion having a radial thickness (C); and a piston positioned within the cylinder liner to reciprocate along an axis, the piston including a top surface, an outside wall having an outer peripheral surface, and a groove positioned an axial distance (B) from the top surface; wherein a ratio of distance (B) to internal diameter (D) is less than 0.090, a ratio of thickness (A) to distance (B) is less than 0.80, and a ratio of distance (B) to thickness (C) is less than 1.30.