Understanding AFR: Filling in the Gaps
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Filling in the Gaps
00.58
| 00:00 | By now we have developed a pretty complete map of the target AFR we want to use in the specific zones we split the AFR target map into. |
| 00:09 | This will leave some areas that we haven’t entered numbers for between the different zones. |
| 00:14 | The way to address these is to apply a smooth interpolation to the target AFR. |
| 00:20 | For example if we have a target AFR at 100 kPa of 0.95 and a target at 200 kPa of 0.82, we would smoothly taper the AFR from 0.95 down to 0.82 as the boost pressure increases. |
| 00:36 | Likewise we can apply the same technique through the different areas of the map so we have a complete and smooth target AFR MAP. |
| 00:45 | For our engine to operate smoothly and consistently, it will want to have a smooth and consistent AFR as well and our AFR target MAP is the first place we need to address this. |
