Improved thermal management of combustion engines

A method of improving the reflectivity of a surface of an internal combustion engine, the internal combustion engine having a cylindrical or non-cylindrical internal wall of an internal combustion chamber in which one or more pistons move and in which combustion occurs, the method comprising:

• polishing a surface of the internal combustion chamber, said surface exposed to combustion during use of the internal combustion engine, wherein the surface is at least one of (i) the cylindrical internal wall of the internal combustion chamber, (ii) the one or more pistons, (iii) a valve and (iv) an engine head,
• said polishing effective to increase a reflectivity of the surface,
• further comprising
• polishing a first zone of the surface using a first amount of pressure for a first length of time, the first zone not traversed by the one or more pistons, and
• polishing a second zone of the surface traversed by the one or more pistons using an amount of pressure greater or lesser than the first amount of pressure or using the first amount of pressure for a length of time longer or shorter than the first length of time, wherein length of time refers to length of time that the surface is polished by a tool.