(http://www.roundabouttoys.com/car/lambda.jpg)
Now my brain is starting to overheat trying to figure out lambda and afr - I understand the theory but after that I seem to have read so much information that its starting to get confusing.
Looking at the pretty picture above - between 3.5k and around 4.5k under load I\'m running very rich I think. Am I reading it right? I\'m presuming the reading on the left is lambda and not a voltage reading (in which case its lean across the board?):confused:
Hi
It looks like a Lambda reading to me.
I\'m not an expert, but I did a lot of reading on this while I was playing with megasquirt last year. Hope this helps..
| Lambda | AFR |
| 0.686 | 10.08 |
| 0.696 | 10.23 |
| 0.706 | 10.38 |
| 0.716 | 10.53 |
| 0.727 | 10.69 |
| 0.739 | 10.86 |
| 0.75 | 11.03 |
| 0.762 | 11.2 |
| 0.774 | 11.38 |
| 0.787 | 11.57 |
| 0.8 | 11.76 |
| 0.814 | 11.96 |
| 0.828 | 12.17 |
| 0.842 | 12.38 |
| 0.857 | 12.6 |
| 0.873 | 12.83 |
| 0.889 | 13.07 |
| 0.905 | 13.31 |
| 0.923 | 13.57 |
| 0.941 | 13.84 |
| 0.96 | 14.11 |
| 0.98 | 14.4 |
| 1 | 14.7 |
| 1.037 | 15.25 |
| 1.078 | 15.84 |
| 1.121 | 16.48 |
| 1.169 | 17.18 |
| 1.22 | 17.93 |
| 1.276 | 18.76 |
| 1.337 | 19.66 |
| 1.405 | 20.66 |
Sorry for the dodgy HTML, it\'s the only way I could get it to display nicely in a table format.
Regards
Ian
No idea why it\'s lumped all that space in at the top :3Confused Sorry guys. Hope the info is helpful, though
170 KPa is this your boost pressure, is KPa Kilopascal? if so thats 24psi!!
No - that includes atmosphere of 100Kpa, so that is at 70Kpa boost (around 9/10 psi)
In your output the motec interpreter gives a plot of lambda against rpm :)
10.69/10.53 = 0.72 which is a little rich but it\'s better to start off rich and then work down rather than lean it out...