Research Article
Comparative Experimental Study of Tribo-Mechanical Performance of Low-Temperature PVD Based TiN Coated PRCL Systems for Diesel Engine
Table 9
Summary of mean COF and wear rate results.
| PRCL system | Sample ID | Surface Roughness | Coating Thickness | Mean COF | Cylinder Liner Wear Rate (μg/min) | Piston Ring Wear Rate (μg/min) |
| PRCL 1 (As is scenario) | Uncoated Cylinder Liner against Cr Coated Piston Ring | | 1 | 0.55μm | N/A | 0.114 | 11.30 | -2.0 |
| PRCL 2 | TiN Coated Cylinder Liner against TiN Coated Piston Rings | | 1 | Fine sample | 1.920μm | 0.222 | 11.67 | 0.67 | | 2 | Rough sample | 1.920μm | 0.254 | 7.67 | 3 | | 3 | Fine sample | 3.523μm | 0.165 | 8.67 | 2 | | 4 | Rough sample | 3.523μm | 0.224 | 6.33 | 5.33 | | 5 | Fine sample | 5.120μm | 0.06 | 5.33 | 5.33 | | 6 | Rough sample | 5.120μm | 0.086 | 4.33 | 6.33 |
| PRCL 3 | TiN Coated Cylinder Liner against Cr Coated Piston Rings | | 1 | Fine sample | 1.920μm | 0.101 | 0.33 | 1.67 | | 2 | Rough sample | 1.920μm | 0.088 | -0.33 | 3.67 | | 3 | Fine sample | 3.523μm | 0.12 | -0.16 | 3.33 | | 4 | Rough sample | 3.523μm | 0.104 | -2.67 | 5.83 | | 5 | Fine sample | 5.120μm | 0.128 | -3 | 8.33 | | 6 | Rough sample | 5.120μm | 0.111 | -4.33 | 9.21 |
| PRCL 4 | Uncoated Cylinder Liner against TiN Coated Piston Ring | | 1 | 0.55μm | N/A | 0.157 | 13 | 0.54 |
|
|