...
If the EGT estimate E or EGT type 6 output is above the value in the map it will calculate the Lambda target using the following method.
| Inc drawio | ||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
the Mode 32 threshold and target maps for the correction factor are Lambda Target EGT correction Temp Target (mode 0x20) & Lambda Target EGT correction Temp Thres (mode 0x20)
...
Lambda Target Mode 33 (0x21)
...
This mode is Primarily for EGT component protection To get the lambda target to move away from 1 earlier you can reduce the EGT threshold 1D maps and it will go into component protection earlier. We are working on improving our understanding of this logic and will hopefully have some documentation soon.
...
| Inc drawio | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
The Lambda Target Component protection map can be set to give a low enough target to decrease EGTs
...
More information on fuel target modes will be added on request.
Injection (Port and Direct)
Toyota have used a Direct injection 4-stroke pertol petrol engine with Sequential multiport Fuel Injection (D-4S SFI). This system has both direct injectors and port injectors used for the fuel injection system. In order to fully maximize the effectiveness of the direct injection (cooling effect, jet stream use, air-fuel mixture form variance), a fuel injection is divided over multiple slots depending on a variety of running conditionseffect, jet stream use, air-fuel mixture form variance), a fuel injection is divided over multiple slots depending on a variety of running conditions.
Port to Direct injection split is split into two variables,
An overall Injection mode (logs as Injection Mode, 0 = Port, 1= DI, 2 = PI and DI)
A Combustion mode in which a set number of pulses can occur.
The choice of Injection mode and Combustion mode is set by a series of Choice maps that select which series of Split, Lambda adjustment and limitations are used.
Cam timing
Cam timing is variable on both intake and exhaust camshafts (dual VVT) there are many corrections for OCV control to help keep the actual cam angle on the target angle but so far during testing we have not seen much cam error.
...
To adjust the cam angle targets for intake use the Intake Cam Angle Target map
...
to adjust the Exhaust Overlap Cam angle Target Angle the respective map.
...