Micro Carbon Residue (MCR) classification for residual fuels per ISO 8217 RMG/RMK - predicts carbonaceous deposit tendency in cylinders and piston crowns.
Formula
$$ MCR \leq 18\%, \quad \text{Asph}/MCR \leq 0.5 $$Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $MCR$ | Micro Carbon Residue | % m/m | ISO 10370 |
| $Asphaltenes$ | n-heptane-insoluble fraction | % m/m | ASTM D3279 / IP 143 |
Sources
- ISO 8217:2017 RMG380.