fuelsettingshelp
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision | Next revision Both sides next revision | ||
|
fuelsettingshelp [2009/03/09 06:52] twdorris |
fuelsettingshelp [2009/03/09 07:05] twdorris |
||
|---|---|---|---|
| Line 24: | Line 24: | ||
| The needed Global fuel adjustment value may be calculated as follows: | The needed Global fuel adjustment value may be calculated as follows: | ||
| - | FlowRateAdj1G = squareroot(37.0 / BaseFuelPressure) | + | FlowRateAdj1G = squareroot(BaseFuelPressure / 37) |
| - | FlowRateAdj2G = squareroot(43.5 / BaseFuelPressure) | + | FlowRateAdj2G = squareroot(BaseFuelPressure / 43.5) |
| - | Adj = 100 * ( (450 / InjectorCCPerMin) * FlowRateAdj - 1) | + | NewInjFlow = InjectorCCPerMin * FlowRateAdj |
| + | Adj = (100 * ( 450 / NewInjFlow ) ) - 100 | ||
| - | Where BaseFuelPressure is specified in PSI and InjectorCCPerMin is the flowrate of the injectors at 43.5psi (the standard flowrate reference pressure). Some slight emperical tweaking of this theoretically-derived value may be needed to get actual air/fuel ratios to match what the ECU intends. Since the Global fuel adjustment value is a multiplier applied to the injector pulsewidth, altering it tends to change the actual air/fuel ratio proportionally under all conditions. | + | Where BaseFuelPressure is specified in PSI and InjectorCCPerMin is the flowrate of the injectors at 43.5psi (the standard flowrate reference pressure). Some slight empirical tweaking of this theoretically-derived value may be needed to get actual air/fuel ratios to match what the ECU intends. Since the Global fuel adjustment value is a multiplier applied to the injector pulsewidth, altering it tends to change the actual air/fuel ratio proportionally under all conditions. |
| ==== Deadtime ==== | ==== Deadtime ==== | ||
fuelsettingshelp.txt · Last modified: 2024/03/15 11:16 (external edit)
Page Tools
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 4.0 International
