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US 2012/0234268 A1Published application
Engine arrangement for enhanced cooling
AssigneeCummins Intellectual Property, Inc.
InventorsDavid Paul GENTER, Keith A. Gunter, Ian W. McGiffen, Joseph A. Worthington
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Abstract
A cylinder liner and piston configuration for an internal combustion engine includes features for improving the cooling of the piston. Specific ratios and dimensions are included to optimize the features of the cylinder liner and piston. Also included are unique piston features that assist in achieving some of the specified dimensions and ratios.
Claims20
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;
- 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.
3 more elements
Dependencies are inferred from the claim text.