Link G4 Plus Software Tutorial: Fuel Equation
Fuel Equation
01.13
00:00 | - Next we have the fuel equation which defines the load input for the fuel equation. |
00:05 | The fuel equation is a calculation that goes on in the background of the Link ECU and changes the fuel injector pulse width based on engine load. |
00:13 | The most common mode is load equals map where the injector pulse width is manipulated based on manifold pressure. |
00:20 | Basically if we double manifold pressure, then injector pulse width is also doubled. |
00:25 | This mode is suitable for most engines and results in a pretty flat fuel map. |
00:30 | For heavily modified engines that don't provide consistent manifold vacuum, we can choose load equals BAP. |
00:37 | In this mode, the ECU ignores manifold pressure and instead uses the onboard barometric sensor to give automatic compensation for changes in barometric air pressure. |
00:48 | If you're using load equals BAP, then you would usually select TPS as the load axis for the fuel table. |
00:56 | Lastly we have load equals MAP over BAP crossover. |
00:59 | This is a combination of the other modes that uses barometric pressure correction until the engine sees positive boost pressure. |
01:06 | The ECU then uses MAP correction. |