초록 ▼

A method includes spraying a coating on to an engine bore surface, honing the coated surface to create a honed surface region, and cleaning the honed surface region to remove material from the surface pores. The honed surface region includes a plurality of surface pores and upper, middle, and lower

A method includes spraying a coating on to an engine bore surface, honing the coated surface to create a honed surface region, and cleaning the honed surface region to remove material from the surface pores. The honed surface region includes a plurality of surface pores and upper, middle, and lower regions. Cleaning the honed surface region produces upper, middle, and lower region surface porosities, with the middle region porosity being greater than at least one of the upper and lower porosities.

대표청구항 ▼

1. A method comprising: spraying a coating on to an engine bore surface;honing the coated surface to create a honed surface region having a plurality of surface pores and upper, middle, and lower regions; andcleaning the honed surface region to remove material from the surface pores and produce uppe

1. A method comprising: spraying a coating on to an engine bore surface;honing the coated surface to create a honed surface region having a plurality of surface pores and upper, middle, and lower regions; andcleaning the honed surface region to remove material from the surface pores and produce upper, middle, and lower region surface porosities, the middle region porosity being greater than at least one of the upper and lower porosities. 2. The method of claim 1, wherein the middle region average porosity is greater than the upper region porosity and the lower region porosity. 3. The method of claim 1, wherein the cleaning step includes spraying a pressurized fluid on to the honed surface region. 4. The method of claim 3, wherein spraying includes spraying the pressurized fluid through a nozzle with multiple controlled apertures of different diameters. 5. The method of claim 3, wherein spraying includes moving a nozzle with a single aperture relative to the engine bore surface and varying spray pressure of the pressurized fluid based on the region. 6. The method of claim 1, wherein the cleaning step includes masking at least one region of the honed surface and removing the material from surface pores in an unmasked region via gaseous combustion. 7. The method of claim 1, wherein the cleaning step includes spraying an abrasive high pressure fluid on to the honed surface region and varying spray pressure based on the region. 8. The method of claim 7, wherein the abrasive high pressure fluid is compressed air or a dry ice blast. 9. A method comprising: spraying a coating on to an engine bore surface;honing the coated surface to create a honed surface region having a plurality of surface pores and a first and second region; andcleaning the honed surface region to selectively remove material from the surface pores and produce a first region average surface porosity greater than a second region average surface porosity. 10. The method of claim 9, wherein the first region is a middle region of the honed surface region, and the second region is an upper and lower ring of the honed surface region. 11. The method of claim 9, wherein the cleaning step includes spraying a pressurized fluid on to the honed surface region. 12. The method of claim 11, wherein spraying includes spraying the pressurized fluid through a nozzle with multiple controlled apertures of different diameters. 13. The method of claim 11, wherein spraying includes moving a nozzle with a single aperture relative to the engine bore surface and varying spray pressure of the pressurized fluid based on the region. 14. The method of claim 9, wherein the cleaning step includes masking one region of the honed surface region and removing the material from surface pores in an unmasked region via gaseous combustion. 15. The method of claim 9, wherein the cleaning step includes spraying an abrasive high pressure fluid on to the honed surface region and varying spray pressure based on the region. 16. The method of claim 15, wherein the abrasive high pressure fluid is compressed air or a dry ice blast. 17. A method comprising: spraying a coating on to an engine bore surface;honing the coated surface to create a honed surface region having a plurality of surface pores and upper, middle, and lower regions; andcleaning the honed surface region to remove material from the surface pores from the middle region. 18. The method of claim 17, wherein the middle region is a majority of the honed surface region, and the upper and lower regions are upper and lower rings of the honed surface region. 19. The method of claim 17, wherein the cleaning step includes selectively spraying a pressurized fluid or an abrasive pressurized fluid on to the middle region. 20. The method of claim 17, wherein the cleaning step includes masking the upper and lower regions of the honed surface region and removing the material from surface pores in the middle region via gaseous combustion.