Patent ID: 6197370
Filing Date: 2001-03-06
Classification: B05B,B05D,F02B

Abstract:
A method of coating honed cylinder bore surfaces with an ultra thin lubricant phase, the cylinder bore being generated by a tool revolved about an axis of revlution, comprising:(a) preparing the cylinder bore surface to expose fresh metal free of contamination,(b) generating a hollow conical spray consisting of fine mist droplets from an emulsion containing a solid lubricant, the conical spray being generated using a high pressure supply of said emulsion in the pressure range of 1200-2200 psi and, using a nozzle having diverging and converging sections effective to cause the momentum of the emulsion to hug the periphery of the nozzle interior thereby effecting a hollow interior to the conical spray, the conical spray having a base with a diameter greater than the diameter of said cylinder bore, and(c) moving the apex of the conical spray along the axis of the cylinder bore at a uniform speed to deposit a coating of said emulsion on the interior of said cylinder bore in a thickness range of 5-15 microns.